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Safety Risk Model
Risk Profile Bulletin
Appendix B
Version 7
August 2011
A profile of safety risk on the GB mainline railway
Appendix B. Precursor Risk Contributions (Table B1)
B.1.
Introduction
Precursors represent the causes that can lead to the hazardous events modelled in the
SRM. The risk contribution from each precursor and its associated hazardous event is
presented in Table B1 in FWI per year. The Excel version of Table B1 (which can be
downloaded from the RSSB Rail Risk Portal at www.safetyriskmodel.co.uk) contains the
annual rate of risk contribution for precursors in FWI, fatalities, major injuries, minor
RIDDOR-reportable injuries, minor non-RIDDOR-reportable injuries and shock/trauma class
1 or class 2 injuries per year. The risk contributions in Table B1 represent the amount by
which the total risk for the hazardous event would reduce if the failure frequency for the
precursor was reduced to zero.
For precursors where no data is available, the following techniques have been used (where
possible) to assign frequencies:

Empirical Bayes estimates1.

Expert judgement from technical specialists within RSSB.

A statistical method using the chi-squared (2) distribution for zero failures2.
Where it has not been possible to carry out the techniques listed above, a value of zero has
been assigned to the precursor. These precursors have not been published in the SRMRPB.
Some of the hazardous events have been broken down into sub-hazardous event
categories, eg HEM-05 is split into HEM-05A and HEM-05B, because the consequences for
each sub-hazardous event are significantly different from each other.
1
Bedford,T, Quigley, J. and Walls, L. (2003) Statistical review of SRM:WP2 Report, Strathclyde University,
Glasgow.
2
Green, AE and Bourne, AJ Reliability Technology, March 1977
Version 7.1 — August 2011
1
Table B1
The following abbreviations have been used in the Table B1 precursor descriptions:
2
Abbreviation
Meaning
ABCL
AHB
AOCL
Cat A SPAD
DEMU
DLOCO
DMU
ECS
ELOCO
EMU
FP
FT
H&V
HEM
HEN
HET
HST
IC
junc
LC
MCB
MCG
MOP
miscomm
MWL
NPT
OC
OHL
OHLE
OTM
OTP
PCLS
pln
POS
PT
RTA
RV
S&C
SAS O
SAS P
SPAD
UWC (+T)
WSF
automatic barrier level crossing, locally-monitored
automatic half barrier level crossing
automatic open level crossing, locally-monitored
category A SPAD
diesel-electric multiple unit
diesel locomotive
diesel multiple unit
empty coaching stock
electric locomotive
electric multiple unit
footpath level crossing
freight train
heating and ventilation
movement accident
non-movement accident
train accident
high speed train
infrastructure controller
junction
level crossing
manually-controlled barrier level crossing
manually-controlled gate level crossing
member of the public
miscommunication
miniature warning lights
non-passenger train
open level crossing
overhead line
overhead line equipment
on-track machine
on-track plant
parcels train
plain line
possession
passenger train
road traffic accident
road vehicle
switches and crossings
start against running line signal
start against platform starter signal
signal passed at danger
user worked level crossing (+ telephone)
wrong-side signal failure
Version 7.1 — August 2011
Table B1
The Groups in Table B1 refer to SPAD error groupings determined as a result of Lord
Cullen’s recommendations3.
Error category
Group 1
SPAD sub-category
Ambiguous/incomplete information given
Correct information given but misunderstood
Information not given
Wrong information given
Group 2
Driver anticipation of signal clearance
Driver failure to check signal aspect
Driver failure to locate signal aspect
Driver failure to react to caution aspect
Driver ignorance of rules/instructions
Driver violation of rules/instructions
Group 3
Driver misreading of previous signal
Driver viewing of correct signal but misreading aspect
Driver misreading by viewing wrong signal
Group 4
Driver misjudgement of environmental conditions
Driver misjudgement of train behaviour
Unknown driver misjudgement
Group 5
Signaller communication human error
Signaller operating error
Uncategorised driver error
Group 6
Other environmental cause
Rolling stock failure
Train misrouting by signaller
Wrongside signal failure
Group 7
3
Train collision due to train runaway
p.231, Part 1 Report, The Ladbroke Grove Rail Inquiry, the Rt Hon the Lord Cullen, PC.
Version 7.1 — August 2011
3
Table B1
Table B1 describes the normaliser used to calculate the frequency for each hazardous event
precursor. The following table shows the normalisers:
Normaliser
abbreviation
Normaliser description
Value
Pass jour
Passenger journeys per year
1.237×109
Pass km
Passenger kilometres per year
5.044×1010
Tot trn km
Total train kilometres per year
557,159,839
Pass trn km
Passenger train kilometres per year
488,217,472
Non pass trn km
Non-passenger train kilometres per year
68,942,367
Frt tr km on ps lines
Freight train kilometres on passenger lines per year
42,870,087
Frt tr km on frt lines
Freight train kilometres on freight-only lines per year
2,968,976
Frt & PCLS trn km
Freight and parcels train kilometres per year
46,563,359
ECS trn km
Empty coaching stock kilometres per year
22,379,008
ECS & PCLS trn km
Empty coaching stock and parcels train kilometres per year
23,103,304
Pass dsl loco trn km
Diesel locomotive passenger stock kilometres per year
2,777,905
Pass el loco trn km
Electric locomotive passenger stock kilometres per year
18,479,946
Pass DMU trn km
Diesel multiple unit passenger stock kilometres per year
177,303,723
Pass EMU trn km
Electric multiple unit passenger stock kilometres per year
223,086,636
Pass HST trn km
High-speed train passenger stock kilometres per year
66,569,261
LXs: ABCL
Number of automatic barrier, locally monitored level crossings,
52
LXs: AHB
Number of automatic half barrier level crossings
452
LXs: AOCL
Number of automatic open, locally monitored level crossings
117
LXs: FP
Number of footpath level crossings
LXs: FP + MWL
Number of footpath level crossings with miniature warning
lights
40
LXs: MCB
Number of manually-controlled barrier level crossings
234
LXs: MCB + CCTV
Number of manually-controlled barrier level crossings with
closed circuit television
391
LXs: MCG
Number of manually-controlled gate level crossings
183
LXs: OC
Number of open level crossings
55
LXs: UWC
Number of user-worked level crossings
883
LXs: UWC + MWL
Number of user-worked level crossings with miniature warning
lights
96
LXs: UWC + T
Number of user-worked level crossings with telephone
OTP hrs
Hours per year of on-track plant operation
2,129,400
Infra worker hrs
Full time equivalent infrastructure worker hours per year
54,900,000
Infra workers (FTE)
Full time equivalent infrastructure workers per year
30,500
Stations
Total number of stations on railway infrastructure
2,531
Trk m
Total track metres on railway infrastructure
4
2,236
1,667
31,073,000
Version 7.1 — August 2011
Table B1
Table B1 indicates how each hazardous event precursor was derived by showing one of the
following designations:
D – The precursor frequency is predominately based on observed data (however it may
include some modifications due to one of the techniques highlighted in Section B.1).
E – Very little or no data has been observed for the precursor. The frequency has been
predominately estimated using one of the techniques highlighted in Section B.1.
B.2.
Table B1 in Excel
The Excel version of Table B1 contains more detail than the printed version. Additional
information can be accessed using the expansion and filter buttons on the sheet. The
following information is available:
Summary row
Train collisions
(HET-01, HET-02 and HET-03)
Passenger, Workforce,
Member of Public risk
breakdown
Column totals, summing only the unhidden rows (eg when filtered)
and not including subtotals in the rows below


National frequency of SPADs (events per normaliser)
National frequency of SPADs (events per year)
Breakdown of risk shown in terms of:
 Fatalities per year
 Major injuries/year
 RIDDOR-reportable minor injuries per year
 Non-RIDDOR-reportable minor injuries per year
 Shock/trauma injuries per year
Further expansion to show:
 Fatalities per event
 Major injuries per event
 RIDDOR-reportable minor injuries per event
 Non-RIDDOR-reportable minor injuries per event
 Shock/trauma injuries per event
Customised grouping of risk
The Excel filter buttons at the top of each column can be useful to
filter rows to show only hazardous events or precursors of particular
interest, eg miscommunication, open level crossings, or bridges.
Once filtered, the summary row will sum only the precursors that are
visible.
The Excel version of Table B1 released on the RSSB website will be compatible with both
the 2003 and the 2007 versions of Microsoft Excel.
Version 7.1 — August 2011
5
Table B1
The following diagrams indicate how to access the additional information described above by
using the Excel grouping buttons to expand the table to reveal hidden data:
Chart 1.
Table B1 in Excel – extra data
Click here to reveal the
HET-01/02/03 SPAD data columns.
Click here to expand columns
into passenger, workforce, and
member of public breakdowns.
Click here to reveal
the summary row.
Chart 2.
Table B1 in Excel – expanded view
Expanded to reveal consequences
per event, as well as per year.
Expanded to reveal passenger, workforce
and member of the public breakdowns.
Expanded to reveal
the summary row.
6
Version 7.1 — August 2011
Table B1
Filter buttons can be used to customise the viewed precursor rows to show (and include in
the Totals) only the precursors of particular interest. As an example below, the precursors
relating to coupling can be identified by using filter buttons.
Chart 3.
Table B1 in Excel – Filtering
Click on the filter button to
open the dialogue box,
then select Custom Filter.
In this example, only the precursor
descriptions that contain the word
coupling will be selected.
The summary row will only sum the
visible rows (ie those with coupling in the
description).
Version 7.1 — August 2011
7
This page has been intentionally left blank
8
Version 7.1 — August 2011
Table B1
National frequency
Hazardous event code
Precursor code
HET‐01
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
Collision between two passenger trains resulting from a: passenger train Cat A SPAD; runaway train; misrouted train; or WSF
Collision between two passenger trains resulting from a: passenger train Cat A SPAD; misrouted train; or WSF
Ambiguous or incomplete information given by driver/signaller (Group 1):
PFC1‐‐J
PT SPAD due to miscomm of ambiguous/incomplete info at junc
Pass trn km
PFC1‐‐JO
PT SPAD due to miscomm of ambiguous/incomplete info at junc SAS O
Pass trn km
PFC1‐‐P
PT SPAD due to miscomm of ambiguous/incomplete info on pln line
Pass trn km
PFC1‐‐PO
PT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS O
Pass trn km
PFC1‐‐JP
PT SPAD due to miscomm of ambiguous/incomplete info at junc SAS P
Pass trn km
PFC1‐‐PP
PT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS P
Pass trn km
Correct information given but misunderstood by driver/signaller (Group 1):
PFC2‐‐JP
PT SPAD due to miscomm of correct info given but misunderstood at junc SAS P
Pass trn km
PFC2‐‐J
PT SPAD due to miscomm of correct info given but misunderstood at junc
Pass trn km
PFC2‐‐JO
PT SPAD due to miscomm of correct info given but misunderstood at junc SAS O
Pass trn km
PFC2‐‐PP
PT SPAD due to miscomm of correct info given but misunderstood on pln line SAS P
Pass trn km
PFC2‐‐PO
PT SPAD due to miscomm of correct info given but misunderstood on pln line SAS O
Pass trn km
Pass trn km
PFC2‐‐P
PT SPAD due to miscomm of correct info given but misunderstood on pln line
Information not given by driver/signaller (Group 1):
PFC4‐‐J
PT SPAD due to miscomm of info not given at junc
Pass trn km
PFC4‐‐JP
PT SPAD due to miscomm of info not given at junc SAS P
Pass trn km
PFC4‐‐JO
PT SPAD due to miscomm of info not given at junc SAS O
Pass trn km
PFC4‐‐PP
PT SPAD due to miscomm of info not given on pln line SAS P
Pass trn km
PFC4‐‐PO
PT SPAD due to miscomm of info not given on pln line SAS O
Pass trn km
PFC4‐‐P
PT SPAD due to miscomm of info not given on pln line
Pass trn km
Wrong information given by driver/signaller (Group 1):
PFC3‐‐J
PT SPAD due to miscomm of wrong info given at junc
Pass trn km
PFC3‐‐JP
PT SPAD due to miscomm of wrong info given at junc SAS P
Pass trn km
PFC3‐‐JO
PT SPAD due to miscomm of wrong info given at junc SAS O
Pass trn km
PFC3‐‐P
PT SPAD due to miscomm of wrong info given on pln line
Pass trn km
PFC3‐‐PP
PT SPAD due to miscomm of wrong info given on pln line SAS P
Pass trn km
PFC3‐‐PO
PT SPAD due to miscomm of wrong info given on pln line SAS O
Pass trn km
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
1.76E‐12
8.79E‐13
9.70E‐13
9.44E‐13
6.09E‐13
3.15E‐13
3.51E‐12
2.64E‐12
6.09E‐13
6.29E‐13
2.18E‐13
1.68E‐13
6.09E‐13
6.09E‐13
6.09E‐13
3.15E‐13
2.18E‐13
1.68E‐13
8.79E‐13
6.09E‐13
6.09E‐13
4.85E‐13
2.18E‐13
2.18E‐13
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.2369
0.1961
0.0027
8.58E‐04
4.29E‐04
4.74E‐04
4.61E‐04
2.97E‐04
1.54E‐04
0.0038
0.0017
0.0013
2.97E‐04
3.07E‐04
1.07E‐04
8.21E‐05
0.0012
2.97E‐04
2.97E‐04
2.97E‐04
1.54E‐04
1.07E‐04
8.21E‐05
0.0015
4.29E‐04
2.97E‐04
2.97E‐04
2.37E‐04
1.07E‐04
1.07E‐04
0.3936
0.3789
0.0058
0.0020
9.95E‐04
9.20E‐04
8.96E‐04
6.90E‐04
2.99E‐04
0.0086
0.0040
0.0030
6.90E‐04
5.97E‐04
2.07E‐04
1.59E‐04
0.0027
6.90E‐04
6.90E‐04
6.90E‐04
2.99E‐04
2.07E‐04
1.59E‐04
0.0032
9.95E‐04
6.90E‐04
6.90E‐04
4.60E‐04
2.07E‐04
2.07E‐04
100.00%
96.28%
1.47%
0.51%
0.25%
0.23%
0.23%
0.18%
0.08%
2.19%
1.01%
0.76%
0.18%
0.15%
0.05%
0.04%
0.69%
0.18%
0.18%
0.18%
0.08%
0.05%
0.04%
0.83%
0.25%
0.18%
0.18%
0.12%
0.05%
0.05%
D
D
D
D
E
D
D
D
E
D
E
E
E
E
E
D
E
E
D
E
E
D
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
9
Table B1
National frequency
Hazardous event code
Precursor code
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
Driver anticipates signal clearance (Group 2):
PFD1‐‐P
PT SPAD due to driver anticipation of signal clearance on pln line
PFD1‐‐J
PT SPAD due to driver anticipation of signal clearance at junc
PFD1‐‐JP
PT SPAD due to driver anticipation of signal clearance at junc SAS P
PFD1‐‐JO
PT SPAD due to driver anticipation of signal clearance at junc SAS O
PFD1‐‐PP
PT SPAD due to driver anticipation of signal clearance on pln line SAS P
PFD1‐‐PO
PT SPAD due to driver anticipation of signal clearance on pln line SAS O
Driver fails to check signal aspect (Group 2):
PFD2‐‐P
PT SPAD due to driver failure to check signal aspect on pln line
PFD2‐‐JP
PT SPAD due to driver failure to check signal aspect at junc SAS P
PFD2‐‐J
PT SPAD due to driver failure to check signal aspect at junc
PFD2‐‐PP
PT SPAD due to driver failure to check signal aspect on pln line SAS P
PFD2‐‐PO
PT SPAD due to driver failure to check signal aspect on pln line SAS O
PFD2‐‐JO
PT SPAD due to driver failure to check signal aspect at junc SAS O
Driver fails to locate signal (Group 2):
PFD3‐‐P
PT SPAD due to driver failure to locate signal aspect on pln line
PFD3‐‐J
PT SPAD due to driver failure to locate signal aspect at junc
PFD3‐‐PP
PT SPAD due to driver failure to locate signal aspect on pln line SAS P
PFD3‐‐PO
PT SPAD due to driver failure to locate signal aspect on pln line SAS O
PFD3‐‐JP
PT SPAD due to driver failure to locate signal aspect at junc SAS P
PFD3‐‐JO
PT SPAD due to driver failure to locate signal aspect at junc SAS O
Driver fails to react to cautionary aspect (Group 2):
PFD4‐‐P
PT SPAD due to driver failure to react to cautionary aspect on pln line
PFD4‐‐J
PT SPAD due to driver failure to react to cautionary aspect at junc
Driver ignorance of rules/instructions (Group 2):
PFD5‐‐J
PT SPAD due to driver ignorance of rules/instructions at junc
PFD5‐‐P
PT SPAD due to driver ignorance of rules/instructions on pln line
PFD5‐‐PO
PT SPAD due to driver ignorance of rules/instructions on pln line SAS O
PFD5‐‐JP
PT SPAD due to driver ignorance of rules/instructions at junc SAS P
PFD5‐‐JO
PT SPAD due to driver ignorance of rules/instructions at junc SAS O
PFD5‐‐PP
PT SPAD due to driver ignorance of rules/instructions on pln line SAS P
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
7.68E‐12
3.43E‐12
5.98E‐13
5.98E‐13
4.34E‐13
3.01E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.86E‐11
2.13E‐11
1.69E‐11
7.27E‐12
3.44E‐12
3.37E‐12
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.50E‐11
1.04E‐11
4.34E‐13
4.34E‐13
4.14E‐13
4.14E‐13
Pass trn km
Pass trn km
3.37E‐11
1.92E‐11
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.14E‐12
6.68E‐13
4.34E‐13
4.14E‐13
4.14E‐13
3.01E‐13
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0064
0.0038
0.0017
2.92E‐04
2.92E‐04
2.12E‐04
1.47E‐04
0.0346
0.0091
0.0104
0.0082
0.0035
0.0017
0.0016
0.0133
0.0073
0.0051
2.12E‐04
2.12E‐04
2.02E‐04
2.02E‐04
0.0258
0.0164
0.0094
0.0016
5.58E‐04
3.26E‐04
2.12E‐04
2.02E‐04
2.02E‐04
1.47E‐04
0.0114
0.0073
0.0025
4.42E‐04
4.42E‐04
4.11E‐04
2.85E‐04
0.0585
0.0176
0.0158
0.0125
0.0069
0.0033
0.0025
0.0234
0.0143
0.0077
4.11E‐04
4.11E‐04
3.07E‐04
3.07E‐04
0.0461
0.0319
0.0142
0.0028
8.46E‐04
6.34E‐04
4.11E‐04
3.07E‐04
3.07E‐04
2.85E‐04
2.90%
1.85%
0.65%
0.11%
0.11%
0.10%
0.07%
14.87%
4.48%
4.01%
3.17%
1.75%
0.83%
0.63%
5.95%
3.62%
1.96%
0.10%
0.10%
0.08%
0.08%
11.72%
8.11%
3.61%
0.71%
0.22%
0.16%
0.10%
0.08%
0.08%
0.07%
D
D
D
D
D
E
D
D
D
D
D
D
D
D
D
D
E
E
D
D
D
D
D
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
10
Table B1
National frequency
Hazardous event code
Precursor code
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
Driver violation of rules/instructions (Group 2):
PFD6‐‐P
PT SPAD due to driver violation of rules/instructions on pln line
PFD6‐‐PO
PT SPAD due to driver violation of rules/instructions on pln line SAS O
PFD6‐‐J
PT SPAD due to driver violation of rules/instructions at junc
PFD6‐‐PP
PT SPAD due to driver violation of rules/instructions on pln line SAS P
PFD6‐‐JP
PT SPAD due to driver violation of rules/instructions at junc SAS P
PFD6‐‐JO
PT SPAD due to driver violation of rules/instructions at junc SAS O
Driver misreads by viewing wrong signal (Group 3):
PFR3‐‐J
PT SPAD due to driver viewing the wrong signal at junc
PFR3‐‐P
PT SPAD due to driver viewing the wrong signal on pln line
PFR3‐‐JP
PT SPAD due to driver viewing the wrong signal at junc SAS P
PFR3‐‐PP
PT SPAD due to driver viewing the wrong signal on pln line SAS P
PFR3‐‐PO
PT SPAD due to driver viewing the wrong signal on pln line SAS O
PFR3‐‐JO
PT SPAD due to driver viewing the wrong signal at junc SAS O
Driver misreads previous signal (Group 3):
PFR1‐‐P
PT SPAD due to driver misreading the previous signal aspect on pln line
PFR1‐‐J
PT SPAD due to driver misreading the previous signal aspect at junc
PFR1‐‐JP
PT SPAD due to driver misreading the previous signal aspect at junc SAS P
PFR1‐‐JO
PT SPAD due to driver misreading the previous signal aspect at junc SAS O
PFR1‐‐PO
PT SPAD due to driver misreading the previous signal aspect on pln line SAS O
PFR1‐‐PP
PT SPAD due to driver misreading the previous signal aspect on pln line SAS P
Driver views correct signal but misreads aspect (Group 3):
PFR2‐‐J
PT SPAD due to driver misreading aspect on correct signal at junc
PFR2‐‐P
PT SPAD due to driver misreading aspect on correct signal on pln line
PFR2‐‐PP
PT SPAD due to driver misreading aspect on correct signal on pln line SAS P
PFR2‐‐JP
PT SPAD due to driver misreading aspect on correct signal at junc SAS P
PFR2‐‐PO
PT SPAD due to driver misreading aspect on correct signal on pln line SAS O
PFR2‐‐JO
PT SPAD due to driver misreading aspect on correct signal at junc SAS O
Driver misjudges environmental conditions (Group 4):
PFJ1‐‐J
PT SPAD due to driver misjudge of environmental conditions at junc
PFJ1‐‐P
PT SPAD due to driver misjudge of environmental conditions on pln line
Driver misjudges train behaviour (Group 4):
PFJ2‐‐J
PT SPAD due to driver misjudge of train behaviour at junc
PFJ2‐‐P
PT SPAD due to driver misjudge of train behaviour on pln line
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
3.38E‐12
1.46E‐12
1.43E‐12
5.86E‐13
4.29E‐13
2.98E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.19E‐11
6.16E‐12
6.90E‐13
4.71E‐13
4.71E‐13
4.78E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
6.60E‐12
7.87E‐13
6.70E‐13
6.70E‐13
4.57E‐13
4.57E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
5.20E‐12
3.84E‐12
2.49E‐12
1.82E‐12
6.22E‐13
6.32E‐13
Pass trn km
Pass trn km
1.01E‐11
1.68E‐12
Pass trn km
Pass trn km
1.52E‐11
3.92E‐12
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0037
0.0017
7.15E‐04
6.97E‐04
2.86E‐04
2.10E‐04
1.45E‐04
0.0099
0.0058
0.0030
3.37E‐04
2.30E‐04
2.30E‐04
2.34E‐04
0.0047
0.0032
3.84E‐04
3.27E‐04
3.27E‐04
2.23E‐04
2.23E‐04
0.0071
0.0025
0.0019
0.0012
8.91E‐04
3.04E‐04
3.09E‐04
0.0058
0.0049
8.20E‐04
0.0093
0.0074
0.0019
0.0067
0.0032
0.0014
0.0011
5.55E‐04
3.18E‐04
2.20E‐04
0.0164
0.0088
0.0058
5.11E‐04
4.46E‐04
4.46E‐04
3.54E‐04
0.0087
0.0063
5.83E‐04
4.96E‐04
4.96E‐04
4.33E‐04
4.33E‐04
0.0123
0.0039
0.0036
0.0024
0.0014
5.90E‐04
4.68E‐04
0.0131
0.0115
0.0016
0.0209
0.0172
0.0037
1.71%
0.82%
0.35%
0.27%
0.14%
0.08%
0.06%
4.17%
2.24%
1.49%
0.13%
0.11%
0.11%
0.09%
2.21%
1.59%
0.15%
0.13%
0.13%
0.11%
0.11%
3.11%
0.98%
0.92%
0.60%
0.34%
0.15%
0.12%
3.32%
2.92%
0.40%
5.32%
4.37%
0.94%
D
D
D
D
D
E
D
D
D
D
D
E
D
D
E
E
E
E
D
D
D
D
D
E
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
11
Table B1
National frequency
Hazardous event code
Precursor code
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
Unknown driver misjudgement (Group 4):
PFJ3‐‐J
PT SPAD due to unknown driver misjudge at junc
PFJ3‐‐P
PT SPAD due to unknown driver misjudge on pln line
Signaller communication errors (Group 5):
PFOHE3‐‐J
PT SPAD due to handsignaller communication human error at junc
PFOHE3‐‐JO
PT SPAD due to handsignaller communication human error at junc SAS O
PFOHE3‐‐JP
PT SPAD due to handsignaller communication human error at junc SAS P
PFOHE3‐‐PO
PT SPAD due to handsignaller communication human error on pln line SAS O
PFOHE4‐‐JP
PT SPAD due to other staff communication human error at junc SAS P
PFOHE4‐‐JO
PT SPAD due to other staff communication human error at junc SAS O
PFOHE4‐‐PO
PT SPAD due to other staff communication human error on pln line SAS O
PFOHE3‐‐PP
PT SPAD due to handsignaller communication human error on pln line SAS P
PFOHE4‐‐PP
PT SPAD due to other staff communication human error on pln line SAS P
PFOHE4‐‐P
PT SPAD due to other staff communication human error on pln line
PFOHE3‐‐P
PT SPAD due to handsignaller communication human error on pln line
PFOHE4‐‐J
PT SPAD due to other staff communication human error at junc
Signaller operating errors (Group 5):
PFOHE2‐‐JP
PT SPAD due to signal equipment operating error at junc SAS P
PFOHE2‐‐JO
PT SPAD due to signal equipment operating error at junc SAS O
PFOHE2‐‐PO
PT SPAD due to signal equipment operating error on pln line SAS O
PFOHE2‐‐PP
PT SPAD due to signal equipment operating error on pln line SAS P
PFOHE2‐‐P
PT SPAD due to signal equipment operating error on pln line
PFOHE2‐‐J
PT SPAD due to signal equipment operating error at junc
Uncategorised driver error (Group 5):
PFUC1‐‐J
PT SPAD due to uncategorised driver error at junc
PFUC1‐‐P
PT SPAD due to uncategorised driver error on pln line
PFUC1‐‐JO
PT SPAD due to uncategorised driver error at junc SAS O
PFUC1‐‐PP
PT SPAD due to uncategorised driver error on pln line SAS P
PFUC1‐‐JP
PT SPAD due to uncategorised driver error at junc SAS P
PFUC1‐‐PO
PT SPAD due to uncategorised driver error on pln line SAS O
Other environmental:
PFE2‐‐J
PT SPAD due to vegetation on the track at junc
PFE1‐‐J
PT SPAD due to other environmental conditions at junc
PFE1‐‐P
PT SPAD due to other environmental conditions on pln line
PFE2‐‐P
PT SPAD due to vegetation on the track on pln line
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
7.03E‐13
1.94E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
3.27E‐12
3.27E‐12
3.27E‐12
2.35E‐12
1.19E‐12
1.19E‐12
8.13E‐13
8.13E‐13
8.13E‐13
6.26E‐13
6.26E‐13
5.70E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.19E‐12
1.19E‐12
8.13E‐13
8.13E‐13
6.26E‐13
5.70E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.72E‐12
1.34E‐12
1.20E‐12
4.34E‐13
4.14E‐13
3.01E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.01E‐11
8.08E‐12
2.79E‐12
1.39E‐12
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
4.38E‐04
3.43E‐04
9.47E‐05
0.0092
0.0016
0.0016
0.0016
0.0011
5.82E‐04
5.82E‐04
3.97E‐04
3.97E‐04
3.97E‐04
3.06E‐04
3.06E‐04
2.78E‐04
0.0025
5.82E‐04
5.82E‐04
3.97E‐04
3.97E‐04
3.06E‐04
2.78E‐04
0.0026
8.38E‐04
6.53E‐04
5.84E‐04
2.12E‐04
2.02E‐04
1.47E‐04
0.0109
0.0049
0.0039
0.0014
6.81E‐04
9.80E‐04
7.96E‐04
1.84E‐04
0.0190
0.0037
0.0037
0.0037
0.0022
8.82E‐04
8.82E‐04
7.71E‐04
7.71E‐04
7.71E‐04
5.94E‐04
5.94E‐04
4.22E‐04
0.0043
8.82E‐04
8.82E‐04
7.71E‐04
7.71E‐04
5.94E‐04
4.22E‐04
0.0044
0.0013
0.0013
8.85E‐04
4.11E‐04
3.07E‐04
2.85E‐04
0.0246
0.0114
0.0092
0.0026
0.0013
0.25%
0.20%
0.05%
4.84%
0.94%
0.94%
0.94%
0.57%
0.22%
0.22%
0.20%
0.20%
0.20%
0.15%
0.15%
0.11%
1.10%
0.22%
0.22%
0.20%
0.20%
0.15%
0.11%
1.12%
0.32%
0.32%
0.22%
0.10%
0.08%
0.07%
6.24%
2.91%
2.33%
0.67%
0.34%
E
E
D
D
D
D
E
E
E
E
E
E
E
E
E
E
E
E
E
E
D
D
D
D
E
E
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
12
Table B1
National frequency
Hazardous event code
Precursor code
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01A
HET‐01B
HET‐01B
HET‐01B
HET‐01B
HET‐01B
Rolling stock:
PFTRS2‐‐J
PT SPAD due to traction control failure at junc
PFTRS1‐‐J
PT SPAD due to brake failure at junc
PFTRS2‐‐P
PT SPAD due to traction control failure on pln line
PFTRS1‐‐P
PT SPAD due to brake failure on pln line
Train misroute:
PTSEDEC
PT misroute due to signaller decision making failures
PTSEMEM
PT misroute due to signaller memory lapses
PTSEUNC
PT misroute due to unknown signaller issues
PTSEPER
PT misroute due to signaller perception issues
PTSEACT
PT misroute due to signaller action failures
Wrongside signal failures:
PPC/L‐‐J
PT WSF due to coloured light at junc signal
PPUNCAT‐‐J
PT WSF due to uncategorised at junc signal
PPC/L‐‐P
PT WSF due to coloured light at pln signal
PPUNCAT‐‐P
PT WSF due to uncategorised at pln signal
PPT/C‐‐J
PT WSF due to track circuit at junc signal
PPT/C‐‐P
PT WSF due to track circuit at pln signal
PPSEM‐‐J
PT WSF due to semaphore signal at junc signal
PPSEM‐‐P
PT WSF due to semaphore signal at pln signal
Collision between two passenger trains resulting from a passenger train runaway
PDRVERR‐PE
PT runaway due to driver error
PMISCERRPE
PT runaway due to unknown failure
PBRKDEF‐PE
PT runaway due to vehicle defect/brake failure
PDEFCOUPPE
PT runaway due to coupling failure
HET‐02P
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
Collision between a passenger train and non‐passenger train resulting from a: passenger train Cat A SPAD; runaway train; misrouted train; or WSF
Collision between a passenger train and non‐passenger train resulting from a: passenger train Cat A SPAD; misrouted train; or WSF
Ambiguous or incomplete information given by driver/signaller (Group 1):
2.19E‐13
PFC1‐‐J
PT SPAD due to miscomm of ambiguous/incomplete info at junc
Pass trn km
1.10E‐13
PFC1‐‐JO
PT SPAD due to miscomm of ambiguous/incomplete info at junc SAS O
Pass trn km
1.21E‐13
PFC1‐‐P
PT SPAD due to miscomm of ambiguous/incomplete info on pln line
Pass trn km
1.18E‐13
PFC1‐‐PO
PT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS O
Pass trn km
7.59E‐14
PFC1‐‐JP
PT SPAD due to miscomm of ambiguous/incomplete info at junc SAS P
Pass trn km
3.92E‐14
PFC1‐‐PP
PT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS P
Pass trn km
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.17E‐12
1.17E‐12
3.24E‐13
3.24E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
8.98E‐12
3.95E‐12
1.17E‐12
2.94E‐13
8.88E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.58E‐11
1.37E‐11
1.49E‐11
1.29E‐11
2.37E‐12
2.23E‐12
2.30E‐13
2.17E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
4.61E‐11
3.07E‐11
3.39E‐12
3.39E‐12
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0015
5.74E‐04
5.74E‐04
1.58E‐04
1.58E‐04
0.0071
0.0044
0.0019
5.71E‐04
1.44E‐04
4.34E‐05
0.0305
0.0077
0.0067
0.0073
0.0063
0.0012
0.0011
1.12E‐04
1.06E‐04
0.0408
0.0225
0.0150
0.0017
0.0017
0.0033
0.0013
0.0013
3.08E‐04
3.08E‐04
0.0164
0.0102
0.0045
0.0013
3.33E‐04
1.01E‐04
0.0651
0.0179
0.0155
0.0142
0.0123
0.0027
0.0021
2.61E‐04
2.06E‐04
0.0147
0.0081
0.0054
5.94E‐04
5.94E‐04
0.83%
0.34%
0.34%
0.08%
0.08%
4.16%
2.58%
1.14%
0.34%
0.08%
0.03%
16.54%
4.55%
3.94%
3.60%
3.12%
0.68%
0.54%
0.07%
0.05%
3.72%
2.05%
1.37%
0.15%
0.15%
0.0295
0.0244
3.33E‐04
1.07E‐04
5.35E‐05
5.90E‐05
5.75E‐05
3.71E‐05
1.92E‐05
0.0747
0.0712
0.0011
3.61E‐04
1.81E‐04
1.76E‐04
1.72E‐04
1.25E‐04
5.72E‐05
100.00%
95.39%
1.44%
0.48%
0.24%
0.24%
0.23%
0.17%
0.08%
D
D
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
D
D
D
E
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
E
E
E
E
D
D
D
D
D
D
D
D
D
D
D
D
D
13
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
Correct information given but misunderstood by driver/signaller (Group 1):
PFC2‐‐JP
PT SPAD due to miscomm of correct info given but misunderstood at junc SAS P
PFC2‐‐J
PT SPAD due to miscomm of correct info given but misunderstood at junc
PFC2‐‐JO
PT SPAD due to miscomm of correct info given but misunderstood at junc SAS O
PFC2‐‐PP
PT SPAD due to miscomm of correct info given but misunderstood on pln line SAS P
PFC2‐‐PO
PT SPAD due to miscomm of correct info given but misunderstood on pln line SAS O
PFC2‐‐P
PT SPAD due to miscomm of correct info given but misunderstood on pln line
Information not given by driver/signaller (Group 1):
PFC4‐‐JP
PT SPAD due to miscomm of info not given at junc SAS P
PFC4‐‐JO
PT SPAD due to miscomm of info not given at junc SAS O
PFC4‐‐J
PT SPAD due to miscomm of info not given at junc
PFC4‐‐PP
PT SPAD due to miscomm of info not given on pln line SAS P
PFC4‐‐PO
PT SPAD due to miscomm of info not given on pln line SAS O
PFC4‐‐P
PT SPAD due to miscomm of info not given on pln line
Wrong information given by driver/signaller (Group 1):
PFC3‐‐J
PT SPAD due to miscomm of wrong info given at junc
PFC3‐‐JO
PT SPAD due to miscomm of wrong info given at junc SAS O
PFC3‐‐JP
PT SPAD due to miscomm of wrong info given at junc SAS P
PFC3‐‐P
PT SPAD due to miscomm of wrong info given on pln line
PFC3‐‐PP
PT SPAD due to miscomm of wrong info given on pln line SAS P
PFC3‐‐PO
PT SPAD due to miscomm of wrong info given on pln line SAS O
Driver anticipates signal clearance (Group 2):
PFD1‐‐P
PT SPAD due to driver anticipation of signal clearance on pln line
PFD1‐‐J
PT SPAD due to driver anticipation of signal clearance at junc
PFD1‐‐JP
PT SPAD due to driver anticipation of signal clearance at junc SAS P
PFD1‐‐JO
PT SPAD due to driver anticipation of signal clearance at junc SAS O
PFD1‐‐PP
PT SPAD due to driver anticipation of signal clearance on pln line SAS P
PFD1‐‐PO
PT SPAD due to driver anticipation of signal clearance on pln line SAS O
Driver fails to check signal aspect (Group 2):
PFD2‐‐P
PT SPAD due to driver failure to check signal aspect on pln line
PFD2‐‐JP
PT SPAD due to driver failure to check signal aspect at junc SAS P
PFD2‐‐J
PT SPAD due to driver failure to check signal aspect at junc
PFD2‐‐PP
PT SPAD due to driver failure to check signal aspect on pln line SAS P
PFD2‐‐PO
PT SPAD due to driver failure to check signal aspect on pln line SAS O
PFD2‐‐JO
PT SPAD due to driver failure to check signal aspect at junc SAS O
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
4.38E‐13
3.29E‐13
7.59E‐14
7.85E‐14
2.72E‐14
2.10E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
7.59E‐14
7.59E‐14
7.59E‐14
3.92E‐14
2.72E‐14
2.10E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.10E‐13
7.59E‐14
7.59E‐14
6.05E‐14
2.72E‐14
2.72E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
9.58E‐13
4.28E‐13
7.45E‐14
7.45E‐14
5.41E‐14
3.75E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
2.32E‐12
2.66E‐12
2.10E‐12
9.06E‐13
4.29E‐13
4.20E‐13
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
4.73E‐04
2.14E‐04
1.60E‐04
3.71E‐05
3.83E‐05
1.33E‐05
1.02E‐05
1.54E‐04
3.71E‐05
3.71E‐05
3.71E‐05
1.92E‐05
1.33E‐05
1.02E‐05
1.84E‐04
5.35E‐05
3.71E‐05
3.71E‐05
2.95E‐05
1.33E‐05
1.33E‐05
7.94E‐04
4.68E‐04
2.09E‐04
3.64E‐05
3.64E‐05
2.64E‐05
1.83E‐05
0.0043
0.0011
0.0013
0.0010
4.43E‐04
2.10E‐04
2.05E‐04
0.0016
7.22E‐04
5.42E‐04
1.25E‐04
1.14E‐04
3.97E‐05
3.06E‐05
5.03E‐04
1.25E‐04
1.25E‐04
1.25E‐04
5.72E‐05
3.97E‐05
3.06E‐05
5.98E‐04
1.81E‐04
1.25E‐04
1.25E‐04
8.82E‐05
3.97E‐05
3.97E‐05
0.0022
0.0014
4.85E‐04
8.45E‐05
8.45E‐05
7.89E‐05
5.47E‐05
0.0112
0.0034
0.0030
0.0024
0.0013
6.26E‐04
4.76E‐04
2.11%
0.97%
0.73%
0.17%
0.15%
0.05%
0.04%
0.67%
0.17%
0.17%
0.17%
0.08%
0.05%
0.04%
0.80%
0.24%
0.17%
0.17%
0.12%
0.05%
0.05%
2.93%
1.87%
0.65%
0.11%
0.11%
0.11%
0.07%
15.00%
4.52%
4.04%
3.19%
1.77%
0.84%
0.64%
D
D
E
D
E
E
E
E
E
D
E
E
D
E
E
D
E
E
D
D
D
D
D
E
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
14
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
Driver fails to locate signal (Group 2):
PFD3‐‐P
PT SPAD due to driver failure to locate signal aspect on pln line
PFD3‐‐J
PT SPAD due to driver failure to locate signal aspect at junc
PFD3‐‐PO
PT SPAD due to driver failure to locate signal aspect on pln line SAS O
PFD3‐‐PP
PT SPAD due to driver failure to locate signal aspect on pln line SAS P
PFD3‐‐JP
PT SPAD due to driver failure to locate signal aspect at junc SAS P
PFD3‐‐JO
PT SPAD due to driver failure to locate signal aspect at junc SAS O
Driver fails to react to cautionary aspect (Group 2):
PFD4‐‐P
PT SPAD due to driver failure to react to cautionary aspect on pln line
PFD4‐‐J
PT SPAD due to driver failure to react to cautionary aspect at junc
Driver ignorance of rules/instructions (Group 2):
PFD5‐‐J
PT SPAD due to driver ignorance of rules/instructions at junc
PFD5‐‐P
PT SPAD due to driver ignorance of rules/instructions on pln line
PFD5‐‐PO
PT SPAD due to driver ignorance of rules/instructions on pln line SAS O
PFD5‐‐JP
PT SPAD due to driver ignorance of rules/instructions at junc SAS P
PFD5‐‐JO
PT SPAD due to driver ignorance of rules/instructions at junc SAS O
PFD5‐‐PP
PT SPAD due to driver ignorance of rules/instructions on pln line SAS P
Driver violation of rules/instructions (Group 2):
PFD6‐‐P
PT SPAD due to driver violation of rules/instructions on pln line
PFD6‐‐PO
PT SPAD due to driver violation of rules/instructions on pln line SAS O
PFD6‐‐J
PT SPAD due to driver violation of rules/instructions at junc
PFD6‐‐PP
PT SPAD due to driver violation of rules/instructions on pln line SAS P
PFD6‐‐JP
PT SPAD due to driver violation of rules/instructions at junc SAS P
PFD6‐‐JO
PT SPAD due to driver violation of rules/instructions at junc SAS O
Driver misreads by viewing wrong signal (Group 3):
PFR3‐‐J
PT SPAD due to driver viewing the wrong signal at junc
PFR3‐‐P
PT SPAD due to driver viewing the wrong signal on pln line
PFR3‐‐JP
PT SPAD due to driver viewing the wrong signal at junc SAS P
PFR3‐‐PP
PT SPAD due to driver viewing the wrong signal on pln line SAS P
PFR3‐‐PO
PT SPAD due to driver viewing the wrong signal on pln line SAS O
PFR3‐‐JO
PT SPAD due to driver viewing the wrong signal at junc SAS O
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.87E‐12
1.30E‐12
5.41E‐14
5.41E‐14
5.17E‐14
5.17E‐14
Pass trn km
Pass trn km
4.20E‐12
2.39E‐12
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.43E‐13
8.33E‐14
5.41E‐14
5.17E‐14
5.17E‐14
3.75E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
4.22E‐13
1.83E‐13
1.78E‐13
7.30E‐14
5.35E‐14
3.71E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.49E‐12
7.69E‐13
8.60E‐14
5.87E‐14
5.87E‐14
5.96E‐14
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0017
9.15E‐04
6.36E‐04
2.64E‐05
2.64E‐05
2.52E‐05
2.52E‐05
0.0032
0.0020
0.0012
2.05E‐04
6.96E‐05
4.07E‐05
2.64E‐05
2.52E‐05
2.52E‐05
1.83E‐05
4.62E‐04
2.06E‐04
8.91E‐05
8.69E‐05
3.56E‐05
2.61E‐05
1.81E‐05
0.0012
7.26E‐04
3.75E‐04
4.20E‐05
2.86E‐05
2.86E‐05
2.91E‐05
0.0045
0.0027
0.0015
7.89E‐05
7.89E‐05
5.86E‐05
5.86E‐05
0.0088
0.0061
0.0027
5.34E‐04
1.62E‐04
1.22E‐04
7.89E‐05
5.86E‐05
5.86E‐05
5.47E‐05
0.0013
6.15E‐04
2.66E‐04
2.02E‐04
1.06E‐04
6.07E‐05
4.21E‐05
0.0031
0.0017
0.0011
9.75E‐05
8.56E‐05
8.56E‐05
6.76E‐05
6.01%
3.66%
1.98%
0.11%
0.11%
0.08%
0.08%
11.83%
8.20%
3.63%
0.71%
0.22%
0.16%
0.11%
0.08%
0.08%
0.07%
1.73%
0.82%
0.36%
0.27%
0.14%
0.08%
0.06%
4.21%
2.26%
1.50%
0.13%
0.11%
0.11%
0.09%
D
D
D
D
E
E
D
D
D
D
D
E
E
E
D
D
D
D
D
E
D
D
D
D
D
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
15
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
Driver misreads previous signal (Group 3):
PFR1‐‐P
PT SPAD due to driver misreading the previous signal aspect on pln line
PFR1‐‐J
PT SPAD due to driver misreading the previous signal aspect at junc
PFR1‐‐JP
PT SPAD due to driver misreading the previous signal aspect at junc SAS P
PFR1‐‐JO
PT SPAD due to driver misreading the previous signal aspect at junc SAS O
PFR1‐‐PP
PT SPAD due to driver misreading the previous signal aspect on pln line SAS P
PFR1‐‐PO
PT SPAD due to driver misreading the previous signal aspect on pln line SAS O
Driver views correct signal but misreads aspect (Group 3):
PFR2‐‐J
PT SPAD due to driver misreading aspect on correct signal at junc
PFR2‐‐P
PT SPAD due to driver misreading aspect on correct signal on pln line
PFR2‐‐PP
PT SPAD due to driver misreading aspect on correct signal on pln line SAS P
PFR2‐‐JP
PT SPAD due to driver misreading aspect on correct signal at junc SAS P
PFR2‐‐PO
PT SPAD due to driver misreading aspect on correct signal on pln line SAS O
PFR2‐‐JO
PT SPAD due to driver misreading aspect on correct signal at junc SAS O
Driver misjudges environmental conditions (Group 4):
PFJ1‐‐J
PT SPAD due to driver misjudge of environmental conditions at junc
PFJ1‐‐P
PT SPAD due to driver misjudge of environmental conditions on pln line
Driver misjudges train behaviour (Group 4):
PFJ2‐‐J
PT SPAD due to driver misjudge of train behaviour at junc
PFJ2‐‐P
PT SPAD due to driver misjudge of train behaviour on pln line
Unknown driver misjudgement (Group 4):
PFJ3‐‐J
PT SPAD due to unknown driver misjudge at junc
PFJ3‐‐P
PT SPAD due to unknown driver misjudge on pln line
Signaller communication errors (Group 5):
PFOHE3‐‐JO
PT SPAD due to handsignaller communication human error at junc SAS O
PFOHE3‐‐J
PT SPAD due to handsignaller communication human error at junc
PFOHE3‐‐JP
PT SPAD due to handsignaller communication human error at junc SAS P
PFOHE3‐‐PO
PT SPAD due to handsignaller communication human error on pln line SAS O
PFOHE4‐‐JP
PT SPAD due to other staff communication human error at junc SAS P
PFOHE4‐‐JO
PT SPAD due to other staff communication human error at junc SAS O
PFOHE3‐‐PP
PT SPAD due to handsignaller communication human error on pln line SAS P
PFOHE4‐‐PO
PT SPAD due to other staff communication human error on pln line SAS O
PFOHE4‐‐PP
PT SPAD due to other staff communication human error on pln line SAS P
PFOHE4‐‐P
PT SPAD due to other staff communication human error on pln line
PFOHE3‐‐P
PT SPAD due to handsignaller communication human error on pln line
PFOHE4‐‐J
PT SPAD due to other staff communication human error at junc
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
8.23E‐13
9.82E‐14
8.35E‐14
8.35E‐14
5.69E‐14
5.69E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
6.49E‐13
4.78E‐13
3.10E‐13
2.28E‐13
7.76E‐14
7.89E‐14
Pass trn km
Pass trn km
1.26E‐12
2.09E‐13
Pass trn km
Pass trn km
1.90E‐12
4.88E‐13
Pass trn km
Pass trn km
8.76E‐14
2.42E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
4.08E‐13
4.08E‐13
4.08E‐13
2.92E‐13
1.49E‐13
1.49E‐13
1.01E‐13
1.01E‐13
1.01E‐13
7.81E‐14
7.81E‐14
7.11E‐14
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
5.87E‐04
4.02E‐04
4.79E‐05
4.08E‐05
4.08E‐05
2.78E‐05
2.78E‐05
8.89E‐04
3.17E‐04
2.33E‐04
1.51E‐04
1.11E‐04
3.79E‐05
3.85E‐05
7.19E‐04
6.17E‐04
1.02E‐04
0.0012
9.26E‐04
2.38E‐04
5.46E‐05
4.28E‐05
1.18E‐05
0.0011
1.99E‐04
1.99E‐04
1.99E‐04
1.43E‐04
7.26E‐05
7.26E‐05
4.95E‐05
4.95E‐05
4.95E‐05
3.81E‐05
3.81E‐05
3.47E‐05
0.0017
0.0012
1.11E‐04
9.47E‐05
9.47E‐05
8.31E‐05
8.31E‐05
0.0023
7.36E‐04
6.98E‐04
4.53E‐04
2.58E‐04
1.13E‐04
8.94E‐05
0.0024
0.0021
3.05E‐04
0.0038
0.0031
7.12E‐04
1.80E‐04
1.44E‐04
3.53E‐05
0.0035
6.73E‐04
6.73E‐04
6.73E‐04
4.27E‐04
1.68E‐04
1.68E‐04
1.48E‐04
1.48E‐04
1.48E‐04
1.14E‐04
1.14E‐04
8.06E‐05
2.23%
1.61%
0.15%
0.13%
0.13%
0.11%
0.11%
3.14%
0.99%
0.93%
0.61%
0.35%
0.15%
0.12%
3.20%
2.79%
0.41%
5.14%
4.18%
0.95%
0.24%
0.19%
0.05%
4.73%
0.90%
0.90%
0.90%
0.57%
0.23%
0.23%
0.20%
0.20%
0.20%
0.15%
0.15%
0.11%
D
D
E
E
E
E
D
D
D
D
D
E
D
D
D
D
E
E
D
D
D
D
E
E
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
16
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
Signaller operating errors (Group 5):
PFOHE2‐‐JP
PT SPAD due to signal equipment operating error at junc SAS P
PFOHE2‐‐JO
PT SPAD due to signal equipment operating error at junc SAS O
PFOHE2‐‐PP
PT SPAD due to signal equipment operating error on pln line SAS P
PFOHE2‐‐PO
PT SPAD due to signal equipment operating error on pln line SAS O
PFOHE2‐‐P
PT SPAD due to signal equipment operating error on pln line
PFOHE2‐‐J
PT SPAD due to signal equipment operating error at junc
Uncategorised driver error (Group 5):
PFUC1‐‐P
PT SPAD due to uncategorised driver error on pln line
PFUC1‐‐J
PT SPAD due to uncategorised driver error at junc
PFUC1‐‐JO
PT SPAD due to uncategorised driver error at junc SAS O
PFUC1‐‐PP
PT SPAD due to uncategorised driver error on pln line SAS P
PFUC1‐‐JP
PT SPAD due to uncategorised driver error at junc SAS P
PFUC1‐‐PO
PT SPAD due to uncategorised driver error on pln line SAS O
Other environmental:
PFE2‐‐J
PT SPAD due to vegetation on the track at junc
PFE1‐‐J
PT SPAD due to other environmental conditions at junc
PFE1‐‐P
PT SPAD due to other environmental conditions on pln line
PFE2‐‐P
PT SPAD due to vegetation on the track on pln line
Rolling stock:
PFTRS2‐‐J
PT SPAD due to traction control failure at junc
PFTRS1‐‐J
PT SPAD due to brake failure at junc
PFTRS2‐‐P
PT SPAD due to traction control failure on pln line
PFTRS1‐‐P
PT SPAD due to brake failure on pln line
Train misroute:
PTSEDEC
PT misroute due to signaller decision making failures
PTSEMEM
PT misroute due to signaller memory lapses
PTSEUNC
PT misroute due to unknown signaller issues
PTSEPER
PT misroute due to signaller perception issues
PTSEACT
PT misroute due to signaller action failures
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.49E‐13
1.49E‐13
1.01E‐13
1.01E‐13
7.81E‐14
7.11E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.67E‐13
2.14E‐13
1.49E‐13
5.41E‐14
5.17E‐14
3.75E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.26E‐12
1.01E‐12
3.48E‐13
1.74E‐13
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.46E‐13
1.46E‐13
4.04E‐14
4.04E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.12E‐12
4.92E‐13
1.46E‐13
3.67E‐14
1.11E‐14
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
3.17E‐04
7.26E‐05
7.26E‐05
4.95E‐05
4.95E‐05
3.81E‐05
3.47E‐05
3.28E‐04
8.13E‐05
1.04E‐04
7.28E‐05
2.64E‐05
2.52E‐05
1.83E‐05
0.0014
6.15E‐04
4.92E‐04
1.70E‐04
8.49E‐05
1.82E‐04
7.15E‐05
7.15E‐05
1.97E‐05
1.97E‐05
8.81E‐04
5.46E‐04
2.40E‐04
7.12E‐05
1.79E‐05
5.41E‐06
8.27E‐04
1.68E‐04
1.68E‐04
1.48E‐04
1.48E‐04
1.14E‐04
8.06E‐05
8.47E‐04
2.43E‐04
2.42E‐04
1.69E‐04
7.89E‐05
5.86E‐05
5.47E‐05
0.0045
0.0021
0.0017
5.07E‐04
2.54E‐04
6.01E‐04
2.41E‐04
2.41E‐04
5.90E‐05
5.90E‐05
0.0030
0.0018
8.11E‐04
2.40E‐04
6.05E‐05
1.83E‐05
1.11%
0.23%
0.23%
0.20%
0.20%
0.15%
0.11%
1.13%
0.33%
0.32%
0.23%
0.11%
0.08%
0.07%
6.02%
2.78%
2.22%
0.68%
0.34%
0.80%
0.32%
0.32%
0.08%
0.08%
3.98%
2.47%
1.09%
0.32%
0.08%
0.02%
E
E
E
E
E
E
D
D
D
D
E
E
D
D
D
D
E
E
E
E
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
17
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PA
HET‐02PB
HET‐02PB
HET‐02PB
HET‐02PB
HET‐02PB
Wrongside signal failures:
PPC/L‐‐J
PT WSF due to coloured light at junc signal
PPUNCAT‐‐J
PT WSF due to uncategorised at junc signal
PPC/L‐‐P
PT WSF due to coloured light at pln signal
PPUNCAT‐‐P
PT WSF due to uncategorised at pln signal
PPT/C‐‐J
PT WSF due to track circuit at junc signal
PPT/C‐‐P
PT WSF due to track circuit at pln signal
PPSEM‐‐J
PT WSF due to semaphore signal at junc signal
PPSEM‐‐P
PT WSF due to semaphore signal at pln signal
Collision between a passenger train and non‐passenger train resulting from a passenger train runaway
PDRVERR‐PE
PT runaway due to driver error
PMISCERRPE
PT runaway due to unknown failure
PDEFCOUPPE
PT runaway due to coupling failure
PBRKDEF‐PE
PT runaway due to vehicle defect/brake failure
HET‐02NP
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
Cause precursor description
Normaliser
(events/ normaliser)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.97E‐12
1.71E‐12
1.86E‐12
1.61E‐12
2.95E‐13
2.78E‐13
2.87E‐14
2.71E‐14
Pass trn km
Pass trn km
Pass trn km
Pass trn km
5.74E‐12
3.83E‐12
4.22E‐13
4.22E‐13
Collision between a non‐passenger train and passenger train resulting from a: non‐passenger train Cat A SPAD; runaway train; misrouted train; or WSF
Collision between a non‐passenger train and passenger train resulting from a: non‐passenger train Cat A SPAD; misrouted train; or WSF
Ambiguous or incomplete information given by driver/signaller (Group 1):
3.97E‐11
Non‐pass trn km
NFC1‐‐J
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc
1.32E‐11
NFC1‐‐JO
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc SAS O
Non‐pass trn km
6.62E‐12
NFC1‐‐JP
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc SAS P
Non‐pass trn km
3.79E‐12
NFC1‐‐PO
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS O
Non‐pass trn km
2.55E‐12
NFC1‐‐JOS
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt SAS O
Non‐pass trn km
2.25E‐12
NFC1‐‐JS
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt
Non‐pass trn km
1.31E‐12
NFC1‐‐PP
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS P
Non‐pass trn km
1.08E‐12
NFC1‐‐P
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line
Non‐pass trn km
8.84E‐13
NFC1‐‐JPS
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt SAS P
Non‐pass trn km
Correct information given but misunderstood by driver/signaller (Group 1):
NPT SPAD caused by miscomm arising from correct information being given but NFC2‐‐J
Non‐pass trn km
1.99E‐11
misunderstood at junc
NPT SPAD caused by miscomm arising from correct information being given but NFC2‐‐JO
Non‐pass trn km
1.32E‐11
misunderstood at junc SAS O
NPT SPAD caused by miscomm arising from correct information being given but 1.32E‐11
Non‐pass trn km
NFC2‐‐JP
misunderstood at junc SAS P
3.79E‐12
NFC2‐‐PO
NPT SPAD due to miscomm of correct info given but misunderstood on pln line SAS O
Non‐pass trn km
Version 7.1 — August 2011
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0038
9.62E‐04
8.34E‐04
9.08E‐04
7.87E‐04
1.44E‐04
1.36E‐04
1.40E‐05
1.32E‐05
0.0051
0.0028
0.0019
2.06E‐04
2.06E‐04
0.0121
0.0032
0.0028
0.0027
0.0024
4.86E‐04
4.06E‐04
4.73E‐05
3.95E‐05
0.0034
0.0019
0.0013
1.39E‐04
1.39E‐04
16.22%
4.35%
3.77%
3.63%
3.15%
0.65%
0.54%
0.06%
0.05%
4.61%
2.54%
1.69%
0.19%
0.19%
0.6287
0.6247
100.00%
‐
0.1669
0.0049
0.0027
9.13E‐04
4.57E‐04
2.61E‐04
1.76E‐04
1.55E‐04
9.06E‐05
7.47E‐05
6.09E‐05
0.0040
0.3003
0.0110
0.0064
0.0021
0.0011
5.29E‐04
2.55E‐04
2.25E‐04
1.83E‐04
1.51E‐04
8.83E‐05
0.0089
48.07%
1.76%
1.02%
0.34%
0.17%
0.08%
0.04%
0.04%
0.03%
0.02%
0.01%
1.42%
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
0.0014
0.0032
0.51%
D
‐
9.13E‐04
0.0021
0.34%
D
‐
9.13E‐04
0.0021
0.34%
D
‐
2.61E‐04
5.29E‐04
0.08%
D
‐
D
D
D
D
D
D
D
D
D
D
E
E
D
D
D
D
D
D
E
D
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
18
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
NFC2‐‐JOS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt SAS O
NFC2‐‐PP
NPT SPAD due to miscomm of correct info given but misunderstood on pln line SAS P
NFC2‐‐P
NPT SPAD due to miscomm of correct info given but misunderstood on pln line
NFC2‐‐JPS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt SAS P
NFC2‐‐JS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt
Information not given by driver/signaller (Group 1):
NFC4‐‐J
NPT SPAD caused by miscomm arising from no information being given at junc
NFC4‐‐JO
NPT SPAD caused by miscomm arising from no information being given at junc SAS O
NFC4‐‐JP
NPT SPAD caused by miscomm arising from no information being given at junc SAS P
NFC4‐‐PP
NPT SPAD due to miscomm of info not given on pln line SAS P
NFC4‐‐PO
NPT SPAD due to miscomm of info not given on pln line SAS O
NFC4‐‐JOS
NPT SPAD due to miscomm of info not given at shunt SAS O
NFC4‐‐JPS
NPT SPAD due to miscomm of info not given at shunt SAS P
NFC4‐‐JS
NPT SPAD due to miscomm of info not given at shunt
NFC4‐‐P
NPT SPAD due to miscomm of info not given on pln line
Wrong information given by driver/signaller (Group 1):
NFC3‐‐J
NPT SPAD caused by miscomm arising from wrong information being given at junc
NFC3‐‐JO
NPT SPAD caused by miscomm arising from wrong information being given at junc SAS O
NFC3‐‐JP
NPT SPAD caused by miscomm arising from wrong information being given at junc SAS P
NFC3‐‐JS
NPT SPAD due to miscomm of wrong info given at shunt
NFC3‐‐PP
NPT SPAD due to miscomm of wrong info given on pln line SAS P
NFC3‐‐PO
NPT SPAD due to miscomm of wrong info given on pln line SAS O
NFC3‐‐P
NPT SPAD due to miscomm of wrong info given on pln line
NFC3‐‐JOS
NPT SPAD due to miscomm of wrong info given at shunt SAS O
NFC3‐‐JPS
NPT SPAD due to miscomm of wrong info given at shunt SAS P
Driver anticipates signal clearance (Group 2):
NFD1‐‐P
NPT SPAD due to driver anticipation of signal clearance on pln line
NFD1‐‐JS
NPT SPAD due to driver anticipation of signal clearance at shunt
NFD1‐‐JO
NPT SPAD caused by anticipation of signal clearance at junc SAS O
NFD1‐‐JP
NPT SPAD caused by anticipation of signal clearance at junc SAS P
NFD1‐‐J
NPT SPAD caused by anticipation of signal clearance at junc
NFD1‐‐PO
NPT SPAD due to driver anticipation of signal clearance on pln line SAS O
NFD1‐‐PP
NPT SPAD due to driver anticipation of signal clearance on pln line SAS P
NFD1‐‐JOS
NPT SPAD due to driver anticipation of signal clearance at shunt SAS O
NFD1‐‐JPS
NPT SPAD due to driver anticipation of signal clearance at shunt SAS P
Cause precursor description
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
3.83E‐12
1.31E‐12
1.08E‐12
1.28E‐12
7.49E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.32E‐11
6.62E‐12
4.59E‐12
1.31E‐12
1.31E‐12
1.28E‐12
8.84E‐13
7.49E‐13
3.75E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
3.31E‐11
1.32E‐11
4.59E‐12
6.74E‐12
1.90E‐12
1.90E‐12
1.62E‐12
8.84E‐13
8.84E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
7.46E‐12
8.95E‐12
6.69E‐12
6.26E‐12
3.86E‐12
2.61E‐12
2.61E‐12
1.76E‐12
1.76E‐12
2.64E‐04
9.06E‐05
7.47E‐05
8.79E‐05
5.16E‐05
0.0021
9.13E‐04
4.57E‐04
3.17E‐04
9.06E‐05
9.06E‐05
8.79E‐05
6.09E‐05
5.16E‐05
2.59E‐05
0.0045
0.0023
9.13E‐04
3.17E‐04
4.65E‐04
1.31E‐04
1.31E‐04
1.12E‐04
6.09E‐05
6.09E‐05
0.0029
5.14E‐04
6.17E‐04
4.61E‐04
4.32E‐04
2.66E‐04
1.80E‐04
1.80E‐04
1.21E‐04
1.21E‐04
3.82E‐04
1.83E‐04
1.51E‐04
1.27E‐04
7.48E‐05
0.0046
0.0021
0.0011
7.38E‐04
1.83E‐04
1.83E‐04
1.27E‐04
8.83E‐05
7.48E‐05
5.24E‐05
0.0098
0.0053
0.0021
7.38E‐04
6.74E‐04
2.64E‐04
2.64E‐04
2.27E‐04
8.83E‐05
8.83E‐05
0.0050
0.0010
8.94E‐04
7.78E‐04
7.28E‐04
4.49E‐04
3.64E‐04
3.64E‐04
1.76E‐04
1.76E‐04
0.06%
0.03%
0.02%
0.02%
0.01%
0.74%
0.34%
0.17%
0.12%
0.03%
0.03%
0.02%
0.01%
0.01%
0.01%
1.57%
0.85%
0.34%
0.12%
0.11%
0.04%
0.04%
0.04%
0.01%
0.01%
0.80%
0.17%
0.14%
0.12%
0.12%
0.07%
0.06%
0.06%
0.03%
0.03%
D
E
D
D
D
D
D
E
E
E
D
E
D
E
D
D
E
D
D
D
D
E
E
D
D
E
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
19
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
Driver fails to check signal aspect (Group 2):
NFD2‐‐J
NPT SPAD caused by failure to check signal aspect at junc
NFD2‐‐JO
NPT SPAD caused by failure to check signal aspect at junc SAS O
NFD2‐‐JOS
NPT SPAD due to driver failure to check signal aspect at shunt SAS O
NFD2‐‐JS
NPT SPAD due to driver failure to check signal aspect at shunt
NFD2‐‐JP
NPT SPAD caused by failure to check signal aspect at junc SAS P
NFD2‐‐P
NPT SPAD due to driver failure to check signal aspect on pln line
NFD2‐‐PP
NPT SPAD due to driver failure to check signal aspect on pln line SAS P
NFD2‐‐PO
NPT SPAD due to driver failure to check signal aspect on pln line SAS O
NFD2‐‐JPS
NPT SPAD due to driver failure to check signal aspect at shunt SAS P
Driver fails to locate signal (Group 2):
NFD3‐‐J
NPT SPAD caused by failure to locate signal aspect at junc
NFD3‐‐JS
NPT SPAD due to driver failure to locate signal aspect at shunt
NFD3‐‐JO
NPT SPAD caused by failure to locate signal aspect at junc SAS O
NFD3‐‐JOS
NPT SPAD due to driver failure to locate signal aspect at shunt SAS O
NFD3‐‐P
NPT SPAD due to driver failure to locate signal aspect on pln line
NFD3‐‐JP
NPT SPAD caused by failure to locate signal aspect at junc SAS P
NFD3‐‐JPS
NPT SPAD due to driver failure to locate signal aspect at shunt SAS P
NFD3‐‐PO
NPT SPAD due to driver failure to locate signal aspect on pln line SAS O
NFD3‐‐PP
NPT SPAD due to driver failure to locate signal aspect on pln line SAS P
Driver fails to react to cautionary aspect (Group 2):
NFD4‐‐J
NPT SPAD caused by failure to react to cautionary aspect at junc
NFD4‐‐P
NPT SPAD due to driver failure to react to cautionary aspect on pln line
NFD4‐‐JS
NPT SPAD due to driver failure to react to cautionary aspect at shunt
Driver ignorance of rules/instructions (Group 2):
NFD5‐‐JO
NPT SPAD caused by ignorance of rules/instructions at junc SAS O
NFD5‐‐J
NPT SPAD caused by ignorance of rules/instructions at junc
NFD5‐‐PO
NPT SPAD due to driver ignorance of rules/instructions on pln line SAS O
NFD5‐‐P
NPT SPAD due to driver ignorance of rules/instructions on pln line
NFD5‐‐JP
NPT SPAD caused by ignorance of rules/instructions at junc SAS P
NFD5‐‐JOS
NPT SPAD due to driver ignorance of rules/instructions at shunt SAS O
NFD5‐‐JS
NPT SPAD due to driver ignorance of rules/instructions at shunt
NFD5‐‐PP
NPT SPAD due to driver ignorance of rules/instructions on pln line SAS P
NFD5‐‐JPS
NPT SPAD due to driver ignorance of rules/instructions at shunt SAS P
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.48E‐10
8.15E‐11
7.91E‐11
7.10E‐11
2.94E‐11
2.30E‐11
1.84E‐11
9.22E‐12
3.10E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.04E‐10
8.95E‐11
3.86E‐11
3.87E‐11
1.79E‐11
6.26E‐12
5.27E‐12
2.61E‐12
2.61E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.02E‐10
2.69E‐11
4.17E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
9.65E‐12
9.45E‐12
5.22E‐12
5.22E‐12
6.26E‐12
5.27E‐12
4.47E‐12
1.81E‐12
1.22E‐12
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0319
0.0102
0.0056
0.0055
0.0049
0.0020
0.0016
0.0013
6.36E‐04
2.14E‐04
0.0211
0.0072
0.0062
0.0027
0.0027
0.0012
4.32E‐04
3.63E‐04
1.80E‐04
1.80E‐04
0.0092
0.0070
0.0019
2.88E‐04
0.0033
6.66E‐04
6.52E‐04
3.60E‐04
3.60E‐04
4.32E‐04
3.63E‐04
3.08E‐04
1.25E‐04
8.40E‐05
0.0525
0.0172
0.0095
0.0079
0.0071
0.0034
0.0032
0.0026
0.0013
3.10E‐04
0.0338
0.0121
0.0089
0.0045
0.0039
0.0025
7.28E‐04
5.27E‐04
3.64E‐04
3.64E‐04
0.0160
0.0119
0.0038
4.17E‐04
0.0058
0.0011
0.0011
7.29E‐04
7.29E‐04
7.28E‐04
5.27E‐04
4.47E‐04
2.52E‐04
1.22E‐04
8.40%
2.75%
1.52%
1.26%
1.14%
0.55%
0.51%
0.41%
0.21%
0.05%
5.42%
1.93%
1.43%
0.72%
0.62%
0.40%
0.12%
0.08%
0.06%
0.06%
2.57%
1.90%
0.60%
0.07%
0.92%
0.18%
0.18%
0.12%
0.12%
0.12%
0.08%
0.07%
0.04%
0.02%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
20
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
Driver violation of rules/instructions (Group 2):
NFD6‐‐J
NPT SPAD caused by violation of rules/instructions at junc
NFD6‐‐JO
NPT SPAD caused by violation of rules/instructions at junc SAS O
NFD6‐‐JS
NPT SPAD due to driver violation of rules/instructions at shunt
NFD6‐‐JOS
NPT SPAD due to driver violation of rules/instructions at shunt SAS O
NFD6‐‐P
NPT SPAD due to driver violation of rules/instructions on pln line
NFD6‐‐JP
NPT SPAD caused by violation of rules/instructions at junc SAS P
NFD6‐‐PO
NPT SPAD due to driver violation of rules/instructions on pln line SAS O
NFD6‐‐PP
NPT SPAD due to driver violation of rules/instructions on pln line SAS P
NFD6‐‐JPS
NPT SPAD due to driver violation of rules/instructions at shunt SAS P
Driver misreads by viewing wrong signal (Group 3):
NFR3‐‐J
NPT SPAD caused by viewing the wrong signal at junc
NFR3‐‐JO
NPT SPAD caused by viewing the wrong signal at junc SAS O
NFR3‐‐JS
NPT SPAD due to driver viewing the wrong signal at shunt
NFR3‐‐JP
NPT SPAD caused by viewing the wrong signal at junc SAS P
NFR3‐‐JOS
NPT SPAD due to driver viewing the wrong signal at shunt SAS O
NFR3‐‐PO
NPT SPAD due to driver viewing the wrong signal on pln line SAS O
NFR3‐‐P
NPT SPAD due to driver viewing the wrong signal on pln line
NFR3‐‐JPS
NPT SPAD due to driver viewing the wrong signal at shunt SAS P
NFR3‐‐PP
NPT SPAD due to driver viewing the wrong signal on pln line SAS P
Driver misreads previous signal (Group 3):
NFR1‐‐J
NPT SPAD caused by misreading the previous signal aspect at junc
NFR1‐‐JO
NPT SPAD caused by misreading the previous signal aspect at junc SAS O
NFR1‐‐P
NPT SPAD due to driver misreading previous signal aspect on pln line
NFR1‐‐JP
NPT SPAD caused by misreading the previous signal aspect at junc SAS P
NFR1‐‐PO
NPT SPAD due to driver misreading previous signal aspect on pln line SAS O
NFR1‐‐PP
NPT SPAD due to driver misreading previous signal aspect on pln line SAS P
NFR1‐‐JS
NPT SPAD due to driver misreading previous signal aspect at shunt
NFR1‐‐JOS
NPT SPAD due to driver misreading previous signal aspect at shunt SAS O
NFR1‐‐JPS
NPT SPAD due to driver misreading previous signal aspect at shunt SAS P
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.53E‐11
4.16E‐11
2.72E‐11
1.90E‐11
7.56E‐12
6.75E‐12
3.53E‐12
1.76E‐12
8.22E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.49E‐10
7.80E‐11
2.86E‐11
1.81E‐11
2.10E‐11
1.13E‐11
1.05E‐11
3.81E‐12
1.96E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.53E‐11
1.08E‐11
4.54E‐12
5.06E‐12
2.75E‐12
2.75E‐12
2.78E‐12
1.85E‐12
1.85E‐12
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0106
0.0031
0.0029
0.0019
0.0013
5.21E‐04
4.65E‐04
2.43E‐04
1.22E‐04
5.67E‐05
0.0222
0.0103
0.0054
0.0020
0.0012
0.0014
7.82E‐04
7.26E‐04
2.63E‐04
1.35E‐04
0.0033
0.0011
7.46E‐04
3.13E‐04
3.49E‐04
1.90E‐04
1.90E‐04
1.91E‐04
1.28E‐04
1.28E‐04
0.0174
0.0053
0.0048
0.0027
0.0019
0.0011
7.84E‐04
4.92E‐04
2.46E‐04
8.21E‐05
0.0372
0.0173
0.0091
0.0029
0.0021
0.0021
0.0016
0.0015
3.81E‐04
2.74E‐04
0.0057
0.0018
0.0013
6.33E‐04
5.88E‐04
3.84E‐04
3.84E‐04
2.77E‐04
1.85E‐04
1.85E‐04
2.78%
0.84%
0.77%
0.43%
0.30%
0.17%
0.13%
0.08%
0.04%
0.01%
5.95%
2.77%
1.45%
0.46%
0.34%
0.34%
0.25%
0.24%
0.06%
0.04%
0.91%
0.28%
0.20%
0.10%
0.09%
0.06%
0.06%
0.04%
0.03%
0.03%
D
D
D
D
D
D
D
D
E
D
D
D
D
D
D
D
D
E
D
E
D
D
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
21
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
Driver views correct signal but misreads aspect (Group 3):
NFR2‐‐J
NPT SPAD caused by misreading aspect on correct signal at junc
NFR2‐‐JO
NPT SPAD caused by misreading aspect on correct signal at junc SAS O
NFR2‐‐JOS
NPT SPAD due to driver misreading aspect on correct signal at shunt SAS O
NFR2‐‐JP
NPT SPAD caused by misreading aspect on correct signal at junc SAS P
NFR2‐‐PO
NPT SPAD due to driver misreading aspect on correct signal on pln line SAS O
NFR2‐‐JS
NPT SPAD due to driver misreading aspect on correct signal at shunt
NFR2‐‐P
NPT SPAD due to driver misreading aspect on correct signal on pln line
NFR2‐‐PP
NPT SPAD due to driver misreading aspect on correct signal on pln line SAS P
NFR2‐‐JPS
NPT SPAD due to driver misreading aspect on correct signal at shunt SAS P
Driver misjudges environmental conditions (Group 4):
NFJ1‐‐J
NPT SPAD caused by misjudge of environmental conditions at junc
NFJ1‐‐P
NPT SPAD due to driver misjudge of environmental conditions on pln line
NFJ1‐‐JS
NPT SPAD due to driver misjudge of environmental conditions at shunt
Driver misjudges train behaviour (Group 4):
NFJ2‐‐J
NPT SPAD caused by misjudge of train behaviour at junc
NFJ2‐‐P
NPT SPAD due to driver misjudge of train behaviour on pln line
NFJ2‐‐JS
NPT SPAD due to driver misjudge of train behaviour at shunt
Unknown driver misjudgement (Group 4):
NFJ3‐‐J
NPT SPAD caused by unknown misjudge at junc
NFJ3‐‐JS
NPT SPAD due to unknown driver misjudge at shunt
NFJ3‐‐P
NPT SPAD due to unknown driver misjudge on pln line
Signaller communication errors (Group 5):
NFOHE3‐‐J
NPT SPAD caused by handsignaller communication error at junc
NFOHE3‐‐JO
NPT SPAD caused by handsignaller communication error at junc SAS O
NFOHE3‐‐JP
NPT SPAD caused by handsignaller communication error at junc SAS P
NFOHE4‐‐JO
NPT SPAD caused by other staff communication error at junc SAS O
NFOHE4‐‐J
NPT SPAD caused by other staff communication error at junc
NFOHE4‐‐JP
NPT SPAD caused by other staff communication error at junc SAS P
NFOHE3‐‐PO
NPT SPAD due to handsignaller communication error on pln line SAS O
NFOHE3‐‐PP
NPT SPAD due to handsignaller communication error on pln line SAS P
NFOHE4‐‐PP
NPT SPAD due to other staff communication error on pln line SAS P
NFOHE4‐‐PO
NPT SPAD due to other staff communication error on pln line SAS O
NFOHE4‐‐JS
NPT SPAD due to other staff communication error at shunt
NFOHE3‐‐JS
NPT SPAD due to handsignaller communication error at shunt
NFOHE4‐‐JPS
NPT SPAD due to other staff communication error at shunt SAS P
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.81E‐11
4.42E‐11
1.51E‐11
9.56E‐12
7.50E‐12
7.56E‐12
4.28E‐12
3.75E‐12
1.75E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
2.29E‐11
2.50E‐12
1.53E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
9.94E‐11
8.12E‐12
8.83E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
5.30E‐12
1.53E‐12
4.33E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.71E‐11
1.71E‐11
1.71E‐11
1.92E‐11
6.28E‐12
6.24E‐12
4.90E‐12
4.90E‐12
4.90E‐12
4.90E‐12
4.94E‐12
4.94E‐12
3.29E‐12
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0098
0.0033
0.0030
0.0010
6.59E‐04
5.17E‐04
5.21E‐04
2.95E‐04
2.58E‐04
1.20E‐04
0.0019
0.0016
1.72E‐04
1.05E‐04
0.0080
0.0068
5.60E‐04
6.09E‐04
5.01E‐04
3.65E‐04
1.05E‐04
2.99E‐05
0.0089
0.0012
0.0012
0.0012
0.0013
4.33E‐04
4.30E‐04
3.38E‐04
3.38E‐04
3.38E‐04
3.38E‐04
3.41E‐04
3.41E‐04
2.27E‐04
0.0164
0.0056
0.0051
0.0015
0.0011
0.0010
7.56E‐04
5.97E‐04
5.23E‐04
1.75E‐04
0.0042
0.0037
3.49E‐04
1.53E‐04
0.0180
0.0160
0.0011
8.82E‐04
0.0011
8.52E‐04
1.53E‐04
6.04E‐05
0.0174
0.0028
0.0028
0.0028
0.0022
7.30E‐04
7.25E‐04
6.83E‐04
6.83E‐04
6.83E‐04
6.83E‐04
4.94E‐04
4.94E‐04
3.29E‐04
2.63%
0.89%
0.82%
0.24%
0.18%
0.17%
0.12%
0.10%
0.08%
0.03%
0.67%
0.59%
0.06%
0.02%
2.88%
2.56%
0.18%
0.14%
0.17%
0.14%
0.02%
0.01%
2.78%
0.44%
0.44%
0.44%
0.36%
0.12%
0.12%
0.11%
0.11%
0.11%
0.11%
0.08%
0.08%
0.05%
D
D
D
D
D
D
D
D
E
D
D
E
D
D
D
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
22
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
NFOHE4‐‐JOS
NPT SPAD due to other staff communication error at shunt SAS O
NFOHE3‐‐JOS
NPT SPAD due to handsignaller communication error at shunt SAS O
NFOHE3‐‐JPS
NPT SPAD due to handsignaller communication error at shunt SAS P
NFOHE3‐‐P
NPT SPAD due to handsignaller communication error on pln line
NFOHE4‐‐P
NPT SPAD due to other staff communication error on pln line
Signaller operating errors (Group 5):
NFOHE2‐‐JO
NPT SPAD caused by signal equipment operating error at junc SAS O
NFOHE2‐‐J
NPT SPAD caused by signal equipment operating error at junc
NFOHE2‐‐JP
NPT SPAD caused by signal equipment operating error at junc SAS P
NFOHE2‐‐PP
NPT SPAD due to signal equipment operating error on pln line SAS P
NFOHE2‐‐PO
NPT SPAD due to signal equipment operating error on pln line SAS O
NFOHE2‐‐JS
NPT SPAD due to signal equipment operating error at shunt
NFOHE2‐‐JPS
NPT SPAD due to signal equipment operating error at shunt SAS P
NFOHE2‐‐JOS
NPT SPAD due to signal equipment operating error at shunt SAS O
NFOHE2‐‐P
NPT SPAD due to signal equipment operating error on pln line
Uncategorised driver error (Group 5):
NFUC1‐‐J
NPT SPAD caused by uncategorised driver error at junc
NFUC1‐‐JO
NPT SPAD caused by uncategorised driver error at junc SAS O
NFUC1‐‐JS
NPT SPAD due to uncategorised driver error at shunt
NFUC1‐‐PO
NPT SPAD due to uncategorised driver error on pln line SAS O
NFUC1‐‐JOS
NPT SPAD due to uncategorised driver error at shunt SAS O
NFUC1‐‐P
NPT SPAD due to uncategorised driver error on pln line
NFUC1‐‐PP
NPT SPAD due to uncategorised driver error on pln line SAS P
NFUC1‐‐JP
NPT SPAD caused by uncategorised driver error at junc SAS P
NFUC1‐‐JPS
NPT SPAD due to uncategorised driver error at shunt SAS P
Other environmental:
NFE1‐‐J
NPT SPAD caused by other environmental conditions at junc
NFE2‐‐J
NPT SPAD caused by vegetation on the track at junc
NFE1‐‐P
NPT SPAD due to other environmental conditions on pln line
NFE2‐‐JS
NPT SPAD due to vegetation on the track at shunt
NFE1‐‐JS
NPT SPAD due to other environmental conditions at shunt
NFE2‐‐P
NPT SPAD due to vegetation on the track on pln line
Cause precursor description
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
3.29E‐12
3.29E‐12
3.29E‐12
1.40E‐12
1.40E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.92E‐11
6.28E‐12
6.24E‐12
4.90E‐12
4.90E‐12
4.94E‐12
3.29E‐12
3.29E‐12
1.40E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
9.45E‐12
6.69E‐12
5.27E‐12
2.61E‐12
3.51E‐12
2.24E‐12
1.81E‐12
2.17E‐12
1.22E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.52E‐11
5.28E‐12
3.11E‐12
1.52E‐12
1.52E‐12
6.23E‐13
2.27E‐04
2.27E‐04
2.27E‐04
9.64E‐05
9.64E‐05
0.0038
0.0013
4.33E‐04
4.30E‐04
3.38E‐04
3.38E‐04
3.41E‐04
2.27E‐04
2.27E‐04
9.64E‐05
0.0024
6.52E‐04
4.61E‐04
3.63E‐04
1.80E‐04
2.42E‐04
1.54E‐04
1.25E‐04
1.50E‐04
8.40E‐05
0.0019
0.0011
3.64E‐04
2.15E‐04
1.05E‐04
1.05E‐04
4.29E‐05
3.29E‐04
3.29E‐04
3.29E‐04
1.95E‐04
1.95E‐04
0.0064
0.0022
7.30E‐04
7.25E‐04
6.83E‐04
6.83E‐04
4.94E‐04
3.29E‐04
3.29E‐04
1.95E‐04
0.0041
0.0011
7.78E‐04
5.27E‐04
3.64E‐04
3.51E‐04
3.12E‐04
2.52E‐04
2.52E‐04
1.22E‐04
0.0041
0.0024
8.49E‐04
4.34E‐04
1.52E‐04
1.52E‐04
8.69E‐05
0.05%
0.05%
0.05%
0.03%
0.03%
1.03%
0.36%
0.12%
0.12%
0.11%
0.11%
0.08%
0.05%
0.05%
0.03%
0.65%
0.18%
0.12%
0.08%
0.06%
0.06%
0.05%
0.04%
0.04%
0.02%
0.66%
0.39%
0.14%
0.07%
0.02%
0.02%
0.01%
E
E
E
E
E
E
E
E
E
E
E
E
E
E
D
E
D
D
D
D
E
E
E
D
E
D
E
E
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
23
Table B1
National frequency
Hazardous event code
Precursor code
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPA
HET‐02NPB
HET‐02NPB
HET‐02NPB
HET‐02NPB
HET‐02NPB
HET‐02NPB
Rolling stock:
NFTRS1‐‐J
NPT SPAD caused by brake failure at junc
NFTRS2‐‐J
NPT SPAD caused by traction control failure at junc
NFTRS1‐‐JS
NPT SPAD due to brake failure at shunt
NFTRS2‐‐JS
NPT SPAD due to traction control failure at shunt
NFTRS1‐‐P
NPT SPAD due to brake failure on pln line
NFTRS2‐‐P
NPT SPAD due to traction control failure on pln line
Train misroute:
NPSEDEC
NPT misroute due to signaller decision making failures
NPSEMEM
NPT misroute due to signaller memory lapses
NPSEUNC
NPT misroute due to unknown signaller issues
NPSEPER
NPT misroute due to signaller perception issues
NPSEACT
NPT misroute due to signaller action failures
Wrongside signal failures:
NPC/L‐‐J
NPT WSF due to coloured light at junc signal
NPC/L‐‐P
NPT WSF due to coloured light at pln signal
NPUNCAT‐‐J
NPT WSF due to uncategorised at junc signal
NPUNCAT‐‐JS
NPT WSF due to uncategorised at junc shunt signal
NPUNCAT‐‐P
NPT WSF due to uncategorised at pln signal
NPSHUNT‐‐JS
NPT WSF due to shunt signal
NPT/C‐‐J
NPT WSF due to track circuit at junc signal
NPT/C‐‐JS
NPT WSF due to track circuit at junc shunt signal
NPT/C‐‐P
NPT WSF due to track circuit at pln signal
NPSEM‐‐J
NPT WSF due to semaphore signal at junc signal
NPSEM‐‐P
NPT WSF due to semaphore signal at pln signal
Collision between a non‐passenger train and passenger train resulting from a non‐passenger train runaway
NDRVERR‐NE
NPT runaway due to driver error
NBRKDEF‐NE
NPT runaway due to vehicle defect/brake failure
NMISCERRNE
NPT runaway due to unknown failure
NCOUPDEFNE
NPT runaway due to coupling failure
NVAND‐‐‐NE
NPT runaway due to vandalism activity
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
3.83E‐11
8.86E‐12
3.69E‐12
2.56E‐12
1.04E‐12
7.24E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.76E‐11
6.95E‐12
3.03E‐12
1.19E‐12
2.70E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.27E‐11
1.19E‐11
7.74E‐12
1.05E‐11
7.31E‐12
3.44E‐12
1.34E‐12
1.81E‐12
1.26E‐12
1.84E‐13
1.74E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
3.20E‐09
1.60E‐09
9.60E‐10
1.07E‐10
1.07E‐10
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0038
0.0026
6.11E‐04
2.54E‐04
1.76E‐04
7.20E‐05
4.99E‐05
0.0020
0.0012
4.79E‐04
2.09E‐04
8.21E‐05
1.86E‐05
0.0040
8.73E‐04
8.24E‐04
5.34E‐04
7.22E‐04
5.04E‐04
2.37E‐04
9.21E‐05
1.25E‐04
8.70E‐05
1.27E‐05
1.20E‐05
0.4118
0.2206
0.1103
0.0662
0.0074
0.0074
0.0085
0.0062
0.0014
3.69E‐04
2.55E‐04
1.46E‐04
1.01E‐04
0.0047
0.0028
0.0011
4.87E‐04
1.91E‐04
4.34E‐05
0.0080
0.0020
0.0017
0.0012
0.0010
0.0010
3.44E‐04
2.15E‐04
1.81E‐04
1.76E‐04
2.96E‐05
2.42E‐05
0.2784
0.1491
0.0746
0.0447
0.0050
0.0050
1.35%
0.99%
0.23%
0.06%
0.04%
0.02%
0.02%
0.75%
0.45%
0.18%
0.08%
0.03%
0.01%
1.28%
0.33%
0.27%
0.20%
0.17%
0.16%
0.06%
0.03%
0.03%
0.03%
0.00%
0.00%
44.56%
23.87%
11.94%
7.16%
0.80%
0.80%
D
E
D
E
D
E
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
24
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HET‐02NP POS Collision between OTP and passenger train resulting from OTP incorrectly outside possession
Passenger Train Driver Error leading to Collision between OTP and a Passenger Train ‐ OTP HET‐02NP POS OT14I43
incorrectly outside possession limits
Driver/Operator Error ‐ Signal Passed at Danger leading to Collision between OTP and a HET‐02NP POS OT14I14
Passenger Train ‐ OTP incorrectly outside possession limits
Incorrect Management of IC Interface leading to Collision between OTP and a Passenger HET‐02NP POS OT14I31
Train ‐ OTP incorrectly outside possession limits
Possession Irregularity leading to Collision between OTP and a Passenger Train ‐ OTP HET‐02NP POS OT14I46
incorrectly outside possession limits
Driver/Operator Error ‐ Inattention leading to Collision between OTP and a Passenger Train ‐ HET‐02NP POS OT14I12
OTP incorrectly outside possession limits
Defect on Other Vehicle leading to Collision between OTP and a Passenger Train ‐ OTP HET‐02NP POS OT14I07
incorrectly outside possession limits
Defect on OTM leading to Collision between OTP and a Passenger Train ‐ OTP incorrectly HET‐02NP POS OT14I08
outside possession limits
Driver/operator Error ‐ Braking leading to Collision between OTP and a Passenger Train ‐ HET‐02NP POS OT14I11
OTP incorrectly outside possession limits
Driver/Operator Error ‐ Speeding leading to Collision between OTP and a Passenger Train ‐ HET‐02NP POS OT14I15
OTP incorrectly outside possession limits
Handsignaller Error leading to Collision between OTP and a Passenger Train ‐ OTP HET‐02NP POS OT14I17
incorrectly outside possession limits
Unsafe System of Work Employed by Workers leading to Collision between OTP and a HET‐02NP POS OT14I54
Passenger Train ‐ OTP incorrectly outside possession limits
Infrastructure Defect leading to Collision between OTP and a Passenger Train ‐ OTP HET‐02NP POS OT14I32
incorrectly outside possession limits
Driver/Operator Error ‐ Propelling leading to Collision between OTP and a Passenger Train ‐ HET‐02NP POS OT14I13
OTP incorrectly outside possession limits
Signaller Error leading to Collision between OTP and a Passenger Train ‐ OTP incorrectly HET‐02NP POS OT14I50
outside possession limits
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0500
0.0460
7.36%
‐
OTP hrs
6.69E‐09
0.0143
0.0131
2.10%
E
‐
OTP hrs
5.71E‐09
0.0122
0.0112
1.79%
E
‐
OTP hrs
2.35E‐09
0.0050
0.0046
0.74%
E
‐
OTP hrs
2.35E‐09
0.0050
0.0046
0.74%
E
‐
OTP hrs
9.85E‐10
0.0021
0.0019
0.31%
E
‐
OTP hrs
9.85E‐10
0.0021
0.0019
0.31%
E
‐
OTP hrs
9.85E‐10
0.0021
0.0019
0.31%
E
‐
OTP hrs
8.66E‐10
0.0018
0.0017
0.27%
E
‐
OTP hrs
8.66E‐10
0.0018
0.0017
0.27%
E
‐
OTP hrs
5.91E‐10
0.0013
0.0012
0.19%
E
‐
OTP hrs
5.12E‐10
0.0011
0.0010
0.16%
E
‐
OTP hrs
2.36E‐10
5.03E‐04
4.63E‐04
0.07%
E
‐
OTP hrs
1.97E‐10
4.19E‐04
3.86E‐04
0.06%
E
‐
OTP hrs
1.58E‐10
3.35E‐04
3.09E‐04
0.05%
E
‐
25
Table B1
National frequency
Hazardous event code
HET‐03
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
Precursor code
Cause precursor description
Normaliser
Collision between two non‐passenger trains resulting from a: non‐passenger train Cat A SPAD; runaway train; misrouted train; or WSF
Collision between two non‐passenger trains resulting from a: non‐passenger train Cat A SPAD; misrouted train; or WSF
Ambiguous or incomplete information given by driver/signaller (Group 1):
NFC1‐‐J
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc
Non‐pass trn km
NFC1‐‐JO
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc SAS O
Non‐pass trn km
NFC1‐‐JP
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc SAS P
Non‐pass trn km
NFC1‐‐PO
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS O
Non‐pass trn km
NFC1‐‐JOS
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt SAS O
Non‐pass trn km
NFC1‐‐JS
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt
Non‐pass trn km
NFC1‐‐PP
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS P
Non‐pass trn km
NFC1‐‐P
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line
Non‐pass trn km
NFC1‐‐JPS
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt SAS P
Non‐pass trn km
Correct information given but misunderstood by driver/signaller (Group 1):
NPT SPAD caused by miscomm arising from correct information being given but NFC2‐‐J
Non‐pass trn km
misunderstood at junc
NPT SPAD caused by miscomm arising from correct information being given but NFC2‐‐JO
Non‐pass trn km
misunderstood at junc SAS O
NPT SPAD caused by miscomm arising from correct information being given but NFC2‐‐JP
Non‐pass trn km
misunderstood at junc SAS P
NFC2‐‐JOS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt SAS O
Non‐pass trn km
NFC2‐‐PO
NPT SPAD due to miscomm of correct info given but misunderstood on pln line SAS O
Non‐pass trn km
NFC2‐‐PP
NPT SPAD due to miscomm of correct info given but misunderstood on pln line SAS P
Non‐pass trn km
NFC2‐‐JPS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt SAS P
Non‐pass trn km
NFC2‐‐P
NPT SPAD due to miscomm of correct info given but misunderstood on pln line
Non‐pass trn km
NFC2‐‐JS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt
Non‐pass trn km
Information not given by driver/signaller (Group 1):
NFC4‐‐J
NPT SPAD caused by miscomm arising from no information being given at junc
Non‐pass trn km
NFC4‐‐JO
NPT SPAD caused by miscomm arising from no information being given at junc SAS O
Non‐pass trn km
NFC4‐‐JP
NPT SPAD caused by miscomm arising from no information being given at junc SAS P
Non‐pass trn km
NFC4‐‐PP
NPT SPAD due to miscomm of info not given on pln line SAS P
Non‐pass trn km
NFC4‐‐PO
NPT SPAD due to miscomm of info not given on pln line SAS O
Non‐pass trn km
NFC4‐‐JOS
NPT SPAD due to miscomm of info not given at shunt SAS O
Non‐pass trn km
NFC4‐‐JPS
NPT SPAD due to miscomm of info not given at shunt SAS P
Non‐pass trn km
NFC4‐‐JS
NPT SPAD due to miscomm of info not given at shunt
Non‐pass trn km
NFC4‐‐P
NPT SPAD due to miscomm of info not given on pln line
Non‐pass trn km
Version 7.1 — August 2011
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
5.829
0.0457
0.0014
7.51E‐04
2.50E‐04
1.25E‐04
7.16E‐05
4.82E‐05
4.24E‐05
2.48E‐05
2.05E‐05
1.67E‐05
0.0011
0.1283
0.0320
0.0010
5.80E‐04
1.93E‐04
9.67E‐05
4.69E‐05
3.22E‐05
2.84E‐05
1.63E‐05
1.34E‐05
1.12E‐05
8.27E‐04
100.00%
24.95%
0.79%
0.45%
0.15%
0.08%
0.04%
0.03%
0.02%
0.01%
0.01%
0.01%
0.65%
5.44E‐12
3.75E‐04
2.90E‐04
0.23%
D
‐
3.63E‐12
2.50E‐04
1.93E‐04
0.15%
D
‐
3.63E‐12
2.50E‐04
1.93E‐04
0.15%
D
‐
1.05E‐12
1.04E‐12
3.60E‐13
3.49E‐13
2.97E‐13
2.05E‐13
7.23E‐05
7.16E‐05
2.48E‐05
2.41E‐05
2.05E‐05
1.41E‐05
5.74E‐04
2.50E‐04
1.25E‐04
8.67E‐05
2.48E‐05
2.48E‐05
2.41E‐05
1.67E‐05
1.41E‐05
7.09E‐06
4.83E‐05
4.69E‐05
1.63E‐05
1.61E‐05
1.34E‐05
9.45E‐06
4.31E‐04
1.93E‐04
9.67E‐05
6.70E‐05
1.63E‐05
1.63E‐05
1.61E‐05
1.12E‐05
9.45E‐06
4.65E‐06
0.04%
0.04%
0.01%
0.01%
0.01%
0.01%
0.34%
0.15%
0.08%
0.05%
0.01%
0.01%
0.01%
0.01%
0.01%
0.00%
D
D
E
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
1.09E‐11
3.63E‐12
1.81E‐12
1.04E‐12
6.99E‐13
6.16E‐13
3.60E‐13
2.97E‐13
2.42E‐13
3.63E‐12
1.81E‐12
1.26E‐12
3.60E‐13
3.60E‐13
3.49E‐13
2.42E‐13
2.05E‐13
1.03E‐13
D
D
D
D
D
D
E
D
E
D
D
E
E
E
D
E
D
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
26
Table B1
National frequency
Hazardous event code
Precursor code
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
Wrong information given by driver/signaller (Group 1):
NFC3‐‐J
NPT SPAD caused by miscomm arising from wrong information being given at junc
NFC3‐‐JO
NPT SPAD caused by miscomm arising from wrong information being given at junc SAS O
NFC3‐‐JS
NPT SPAD due to miscomm of wrong info given at shunt
NFC3‐‐JP
NPT SPAD caused by miscomm arising from wrong information being given at junc SAS P
NFC3‐‐PP
NPT SPAD due to miscomm of wrong info given on pln line SAS P
NFC3‐‐PO
NPT SPAD due to miscomm of wrong info given on pln line SAS O
NFC3‐‐P
NPT SPAD due to miscomm of wrong info given on pln line
NFC3‐‐JOS
NPT SPAD due to miscomm of wrong info given at shunt SAS O
NFC3‐‐JPS
NPT SPAD due to miscomm of wrong info given at shunt SAS P
Driver anticipates signal clearance (Group 2):
NFD1‐‐JS
NPT SPAD due to driver anticipation of signal clearance at shunt
NFD1‐‐P
NPT SPAD due to driver anticipation of signal clearance on pln line
NFD1‐‐JO
NPT SPAD caused by anticipation of signal clearance at junc SAS O
NFD1‐‐JP
NPT SPAD caused by anticipation of signal clearance at junc SAS P
NFD1‐‐J
NPT SPAD caused by anticipation of signal clearance at junc
NFD1‐‐PO
NPT SPAD due to driver anticipation of signal clearance on pln line SAS O
NFD1‐‐PP
NPT SPAD due to driver anticipation of signal clearance on pln line SAS P
NFD1‐‐JPS
NPT SPAD due to driver anticipation of signal clearance at shunt SAS P
NFD1‐‐JOS
NPT SPAD due to driver anticipation of signal clearance at shunt SAS O
Driver fails to check signal aspect (Group 2):
NFD2‐‐J
NPT SPAD caused by failure to check signal aspect at junc
NFD2‐‐JO
NPT SPAD caused by failure to check signal aspect at junc SAS O
NFD2‐‐JOS
NPT SPAD due to driver failure to check signal aspect at shunt SAS O
NFD2‐‐JS
NPT SPAD due to driver failure to check signal aspect at shunt
NFD2‐‐JP
NPT SPAD caused by failure to check signal aspect at junc SAS P
NFD2‐‐P
NPT SPAD due to driver failure to check signal aspect on pln line
NFD2‐‐PP
NPT SPAD due to driver failure to check signal aspect on pln line SAS P
NFD2‐‐PO
NPT SPAD due to driver failure to check signal aspect on pln line SAS O
NFD2‐‐JPS
NPT SPAD due to driver failure to check signal aspect at shunt SAS P
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
9.07E‐12
3.63E‐12
1.85E‐12
1.26E‐12
5.19E‐13
5.19E‐13
4.45E‐13
2.42E‐13
2.42E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
2.45E‐12
2.04E‐12
1.83E‐12
1.72E‐12
1.06E‐12
7.15E‐13
7.15E‐13
4.81E‐13
4.81E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.05E‐11
2.23E‐11
2.17E‐11
1.95E‐11
8.05E‐12
6.31E‐12
5.05E‐12
2.53E‐12
8.49E‐13
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0012
6.26E‐04
2.50E‐04
1.27E‐04
8.67E‐05
3.58E‐05
3.58E‐05
3.07E‐05
1.67E‐05
1.67E‐05
7.92E‐04
1.69E‐04
1.41E‐04
1.26E‐04
1.18E‐04
7.29E‐05
4.93E‐05
4.93E‐05
3.32E‐05
3.32E‐05
0.0087
0.0028
0.0015
0.0015
0.0013
5.55E‐04
4.35E‐04
3.48E‐04
1.74E‐04
5.86E‐05
9.18E‐04
4.84E‐04
1.93E‐04
8.51E‐05
6.70E‐05
2.35E‐05
2.35E‐05
2.01E‐05
1.12E‐05
1.12E‐05
5.35E‐04
1.13E‐04
9.23E‐05
8.79E‐05
8.23E‐05
5.07E‐05
3.23E‐05
3.23E‐05
2.22E‐05
2.22E‐05
0.0060
0.0019
0.0011
9.98E‐04
8.97E‐04
3.86E‐04
2.85E‐04
2.28E‐04
1.14E‐04
3.91E‐05
0.72%
0.38%
0.15%
0.07%
0.05%
0.02%
0.02%
0.02%
0.01%
0.01%
0.42%
0.09%
0.07%
0.07%
0.06%
0.04%
0.03%
0.03%
0.02%
0.02%
4.65%
1.51%
0.84%
0.78%
0.70%
0.30%
0.22%
0.18%
0.09%
0.03%
D
D
D
E
D
D
D
E
E
D
D
E
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
27
Table B1
National frequency
Hazardous event code
Precursor code
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
Driver fails to locate signal (Group 2):
NFD3‐‐J
NPT SPAD caused by failure to locate signal aspect at junc
NFD3‐‐JS
NPT SPAD due to driver failure to locate signal aspect at shunt
NFD3‐‐JO
NPT SPAD caused by failure to locate signal aspect at junc SAS O
NFD3‐‐JOS
NPT SPAD due to driver failure to locate signal aspect at shunt SAS O
NFD3‐‐P
NPT SPAD due to driver failure to locate signal aspect on pln line
NFD3‐‐JP
NPT SPAD caused by failure to locate signal aspect at junc SAS P
NFD3‐‐JPS
NPT SPAD due to driver failure to locate signal aspect at shunt SAS P
NFD3‐‐PP
NPT SPAD due to driver failure to locate signal aspect on pln line SAS P
NFD3‐‐PO
NPT SPAD due to driver failure to locate signal aspect on pln line SAS O
Driver fails to react to cautionary aspect (Group 2):
NFD4‐‐J
NPT SPAD caused by failure to react to cautionary aspect at junc
NFD4‐‐P
NPT SPAD due to driver failure to react to cautionary aspect on pln line
NFD4‐‐JS
NPT SPAD due to driver failure to react to cautionary aspect at shunt
Driver ignorance of rules/instructions (Group 2):
NFD5‐‐JO
NPT SPAD caused by ignorance of rules/instructions at junc SAS O
NFD5‐‐J
NPT SPAD caused by ignorance of rules/instructions at junc
NFD5‐‐JP
NPT SPAD caused by ignorance of rules/instructions at junc SAS P
NFD5‐‐JOS
NPT SPAD due to driver ignorance of rules/instructions at shunt SAS O
NFD5‐‐PO
NPT SPAD due to driver ignorance of rules/instructions on pln line SAS O
NFD5‐‐P
NPT SPAD due to driver ignorance of rules/instructions on pln line
NFD5‐‐JS
NPT SPAD due to driver ignorance of rules/instructions at shunt
NFD5‐‐PP
NPT SPAD due to driver ignorance of rules/instructions on pln line SAS P
NFD5‐‐JPS
NPT SPAD due to driver ignorance of rules/instructions at shunt SAS P
Driver violation of rules/instructions (Group 2):
NFD6‐‐J
NPT SPAD caused by violation of rules/instructions at junc
NFD6‐‐JO
NPT SPAD caused by violation of rules/instructions at junc SAS O
NFD6‐‐JS
NPT SPAD due to driver violation of rules/instructions at shunt
NFD6‐‐JOS
NPT SPAD due to driver violation of rules/instructions at shunt SAS O
NFD6‐‐P
NPT SPAD due to driver violation of rules/instructions on pln line
NFD6‐‐JP
NPT SPAD caused by violation of rules/instructions at junc SAS P
NFD6‐‐PO
NPT SPAD due to driver violation of rules/instructions on pln line SAS O
NFD6‐‐PP
NPT SPAD due to driver violation of rules/instructions on pln line SAS P
NFD6‐‐JPS
NPT SPAD due to driver violation of rules/instructions at shunt SAS P
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
2.85E‐11
2.45E‐11
1.06E‐11
1.06E‐11
4.91E‐12
1.72E‐12
1.44E‐12
7.15E‐13
7.15E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
2.80E‐11
7.37E‐12
1.14E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
2.64E‐12
2.59E‐12
1.72E‐12
1.44E‐12
1.43E‐12
1.43E‐12
1.23E‐12
4.96E‐13
3.34E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.24E‐11
1.14E‐11
7.45E‐12
5.20E‐12
2.07E‐12
1.85E‐12
9.66E‐13
4.83E‐13
2.25E‐13
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0058
0.0020
0.0017
7.29E‐04
7.30E‐04
3.38E‐04
1.18E‐04
9.95E‐05
4.93E‐05
4.93E‐05
0.0025
0.0019
5.08E‐04
7.88E‐05
9.18E‐04
1.82E‐04
1.78E‐04
1.18E‐04
9.95E‐05
9.87E‐05
9.87E‐05
8.45E‐05
3.42E‐05
2.30E‐05
0.0029
8.55E‐04
7.86E‐04
5.13E‐04
3.58E‐04
1.43E‐04
1.27E‐04
6.66E‐05
3.33E‐05
1.55E‐05
0.0039
0.0014
0.0011
5.07E‐04
4.88E‐04
2.22E‐04
8.23E‐05
6.65E‐05
3.23E‐05
3.23E‐05
0.0017
0.0013
3.33E‐04
5.26E‐05
6.23E‐04
1.27E‐04
1.24E‐04
8.23E‐05
6.65E‐05
6.46E‐05
6.46E‐05
5.64E‐05
2.24E‐05
1.54E‐05
0.0020
5.94E‐04
5.46E‐04
3.43E‐04
2.40E‐04
9.35E‐05
8.86E‐05
4.36E‐05
2.18E‐05
1.04E‐05
3.06%
1.06%
0.88%
0.40%
0.38%
0.17%
0.06%
0.05%
0.03%
0.03%
1.35%
1.05%
0.26%
0.04%
0.49%
0.10%
0.10%
0.06%
0.05%
0.05%
0.05%
0.04%
0.02%
0.01%
1.54%
0.46%
0.43%
0.27%
0.19%
0.07%
0.07%
0.03%
0.02%
0.01%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
E
D
D
D
D
D
D
D
D
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
28
Table B1
National frequency
Hazardous event code
Precursor code
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
Driver misreads by viewing wrong signal (Group 3):
NFR3‐‐J
NPT SPAD caused by viewing the wrong signal at junc
NFR3‐‐JO
NPT SPAD caused by viewing the wrong signal at junc SAS O
NFR3‐‐JS
NPT SPAD due to driver viewing the wrong signal at shunt
NFR3‐‐JOS
NPT SPAD due to driver viewing the wrong signal at shunt SAS O
NFR3‐‐JP
NPT SPAD caused by viewing the wrong signal at junc SAS P
NFR3‐‐PO
NPT SPAD due to driver viewing the wrong signal on pln line SAS O
NFR3‐‐P
NPT SPAD due to driver viewing the wrong signal on pln line
NFR3‐‐JPS
NPT SPAD due to driver viewing the wrong signal at shunt SAS P
NFR3‐‐PP
NPT SPAD due to driver viewing the wrong signal on pln line SAS P
Driver misreads previous signal (Group 3):
NFR1‐‐J
NPT SPAD caused by misreading the previous signal aspect at junc
NFR1‐‐JO
NPT SPAD caused by misreading the previous signal aspect at junc SAS O
NFR1‐‐JP
NPT SPAD caused by misreading the previous signal aspect at junc SAS P
NFR1‐‐P
NPT SPAD due to driver misreading previous signal aspect on pln line
NFR1‐‐JS
NPT SPAD due to driver misreading previous signal aspect at shunt
NFR1‐‐PP
NPT SPAD due to driver misreading previous signal aspect on pln line SAS P
NFR1‐‐PO
NPT SPAD due to driver misreading previous signal aspect on pln line SAS O
NFR1‐‐JOS
NPT SPAD due to driver misreading previous signal aspect at shunt SAS O
NFR1‐‐JPS
NPT SPAD due to driver misreading previous signal aspect at shunt SAS P
Driver views correct signal but misreads aspect (Group 3):
NFR2‐‐J
NPT SPAD caused by misreading aspect on correct signal at junc
NFR2‐‐JO
NPT SPAD caused by misreading aspect on correct signal at junc SAS O
NFR2‐‐JOS
NPT SPAD due to driver misreading aspect on correct signal at shunt SAS O
NFR2‐‐JP
NPT SPAD caused by misreading aspect on correct signal at junc SAS P
NFR2‐‐JS
NPT SPAD due to driver misreading aspect on correct signal at shunt
NFR2‐‐PO
NPT SPAD due to driver misreading aspect on correct signal on pln line SAS O
NFR2‐‐P
NPT SPAD due to driver misreading aspect on correct signal on pln line
NFR2‐‐PP
NPT SPAD due to driver misreading aspect on correct signal on pln line SAS P
NFR2‐‐JPS
NPT SPAD due to driver misreading aspect on correct signal at shunt SAS P
Driver misjudges environmental conditions (Group 4):
NFJ1‐‐J
NPT SPAD caused by misjudge of environmental conditions at junc
NFJ1‐‐P
NPT SPAD due to driver misjudge of environmental conditions on pln line
NFJ1‐‐JS
NPT SPAD due to driver misjudge of environmental conditions at shunt
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.08E‐11
2.14E‐11
7.84E‐12
5.75E‐12
4.95E‐12
3.11E‐12
2.88E‐12
1.04E‐12
5.38E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.18E‐12
2.96E‐12
1.39E‐12
1.24E‐12
7.61E‐13
7.54E‐13
7.54E‐13
5.07E‐13
5.07E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.32E‐11
1.21E‐11
4.14E‐12
2.62E‐12
2.07E‐12
2.05E‐12
1.17E‐12
1.03E‐12
4.79E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
6.28E‐12
6.85E‐13
4.19E‐13
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0061
0.0028
0.0015
5.40E‐04
3.96E‐04
3.41E‐04
2.14E‐04
1.99E‐04
7.20E‐05
3.71E‐05
9.00E‐04
2.89E‐04
2.04E‐04
9.56E‐05
8.57E‐05
5.24E‐05
5.20E‐05
5.20E‐05
3.50E‐05
3.50E‐05
0.0027
9.08E‐04
8.35E‐04
2.86E‐04
1.80E‐04
1.43E‐04
1.42E‐04
8.09E‐05
7.08E‐05
3.30E‐05
5.09E‐04
4.33E‐04
4.72E‐05
2.89E‐05
0.0042
0.0020
0.0010
3.61E‐04
2.65E‐04
2.37E‐04
1.40E‐04
1.30E‐04
4.81E‐05
2.43E‐05
6.15E‐04
2.01E‐04
1.42E‐04
6.65E‐05
5.61E‐05
3.50E‐05
3.40E‐05
3.40E‐05
2.34E‐05
2.34E‐05
0.0018
6.32E‐04
5.81E‐04
1.91E‐04
1.26E‐04
9.55E‐05
9.28E‐05
5.30E‐05
4.64E‐05
2.21E‐05
3.85E‐04
3.35E‐04
3.09E‐05
1.93E‐05
3.27%
1.53%
0.80%
0.28%
0.21%
0.19%
0.11%
0.10%
0.04%
0.02%
0.48%
0.16%
0.11%
0.05%
0.04%
0.03%
0.03%
0.03%
0.02%
0.02%
1.43%
0.49%
0.45%
0.15%
0.10%
0.07%
0.07%
0.04%
0.04%
0.02%
0.30%
0.26%
0.02%
0.02%
D
D
D
D
D
D
D
D
E
D
E
D
D
E
E
E
E
E
D
D
D
D
D
D
D
D
E
D
D
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
29
Table B1
National frequency
Hazardous event code
Precursor code
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
Driver misjudges train behaviour (Group 4):
NFJ2‐‐J
NPT SPAD caused by misjudge of train behaviour at junc
NFJ2‐‐JS
NPT SPAD due to driver misjudge of train behaviour at shunt
NFJ2‐‐P
NPT SPAD due to driver misjudge of train behaviour on pln line
Unknown driver misjudgement (Group 4):
NFJ3‐‐J
NPT SPAD caused by unknown misjudge at junc
NFJ3‐‐JS
NPT SPAD due to unknown driver misjudge at shunt
NFJ3‐‐P
NPT SPAD due to unknown driver misjudge on pln line
Signaller communication errors (Group 5):
NFOHE4‐‐JO
NPT SPAD caused by other staff communication error at junc SAS O
NFOHE3‐‐J
NPT SPAD caused by handsignaller communication error at junc
NFOHE3‐‐JO
NPT SPAD caused by handsignaller communication error at junc SAS O
NFOHE3‐‐JP
NPT SPAD caused by handsignaller communication error at junc SAS P
NFOHE4‐‐J
NPT SPAD caused by other staff communication error at junc
NFOHE4‐‐JP
NPT SPAD caused by other staff communication error at junc SAS P
NFOHE4‐‐JS
NPT SPAD due to other staff communication error at shunt
NFOHE3‐‐JS
NPT SPAD due to handsignaller communication error at shunt
NFOHE4‐‐PP
NPT SPAD due to other staff communication error on pln line SAS P
NFOHE3‐‐PP
NPT SPAD due to handsignaller communication error on pln line SAS P
NFOHE3‐‐PO
NPT SPAD due to handsignaller communication error on pln line SAS O
NFOHE4‐‐PO
NPT SPAD due to other staff communication error on pln line SAS O
NFOHE4‐‐JPS
NPT SPAD due to other staff communication error at shunt SAS P
NFOHE3‐‐JOS
NPT SPAD due to handsignaller communication error at shunt SAS O
NFOHE3‐‐JPS
NPT SPAD due to handsignaller communication error at shunt SAS P
NFOHE4‐‐JOS
NPT SPAD due to other staff communication error at shunt SAS O
NFOHE4‐‐P
NPT SPAD due to other staff communication error on pln line
NFOHE3‐‐P
NPT SPAD due to handsignaller communication error on pln line
Signaller operating errors (Group 5):
NFOHE2‐‐JO
NPT SPAD caused by signal equipment operating error at junc SAS O
NFOHE2‐‐J
NPT SPAD caused by signal equipment operating error at junc
NFOHE2‐‐JP
NPT SPAD caused by signal equipment operating error at junc SAS P
NFOHE2‐‐JS
NPT SPAD due to signal equipment operating error at shunt
NFOHE2‐‐PO
NPT SPAD due to signal equipment operating error on pln line SAS O
NFOHE2‐‐PP
NPT SPAD due to signal equipment operating error on pln line SAS P
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
2.72E‐11
2.42E‐12
2.23E‐12
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.45E‐12
4.19E‐13
1.19E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
5.27E‐12
4.69E‐12
4.69E‐12
4.69E‐12
1.72E‐12
1.71E‐12
1.35E‐12
1.35E‐12
1.34E‐12
1.34E‐12
1.34E‐12
1.34E‐12
9.02E‐13
9.02E‐13
9.02E‐13
9.02E‐13
3.83E‐13
3.83E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
5.27E‐12
1.72E‐12
1.71E‐12
1.35E‐12
1.34E‐12
1.34E‐12
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0022
0.0019
1.67E‐04
1.53E‐04
1.37E‐04
1.00E‐04
2.89E‐05
8.18E‐06
0.0024
3.64E‐04
3.23E‐04
3.23E‐04
3.23E‐04
1.19E‐04
1.18E‐04
9.33E‐05
9.33E‐05
9.25E‐05
9.25E‐05
9.25E‐05
9.25E‐05
6.22E‐05
6.22E‐05
6.22E‐05
6.22E‐05
2.64E‐05
2.64E‐05
0.0010
3.64E‐04
1.19E‐04
1.18E‐04
9.33E‐05
9.25E‐05
9.25E‐05
0.0017
0.0015
1.11E‐04
1.01E‐04
1.02E‐04
7.73E‐05
1.93E‐05
5.36E‐06
0.0017
2.53E‐04
2.50E‐04
2.50E‐04
2.50E‐04
8.25E‐05
8.20E‐05
6.24E‐05
6.24E‐05
6.06E‐05
6.06E‐05
6.06E‐05
6.06E‐05
4.16E‐05
4.16E‐05
4.16E‐05
4.16E‐05
1.73E‐05
1.73E‐05
7.01E‐04
2.53E‐04
8.25E‐05
8.20E‐05
6.24E‐05
6.06E‐05
6.06E‐05
1.30%
1.13%
0.09%
0.08%
0.08%
0.06%
0.02%
0.00%
1.35%
0.20%
0.19%
0.19%
0.19%
0.06%
0.06%
0.05%
0.05%
0.05%
0.05%
0.05%
0.05%
0.03%
0.03%
0.03%
0.03%
0.01%
0.01%
0.55%
0.20%
0.06%
0.06%
0.05%
0.05%
0.05%
D
D
D
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
30
Table B1
National frequency
Hazardous event code
Precursor code
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
NFOHE2‐‐JPS
NPT SPAD due to signal equipment operating error at shunt SAS P
NFOHE2‐‐JOS
NPT SPAD due to signal equipment operating error at shunt SAS O
NFOHE2‐‐P
NPT SPAD due to signal equipment operating error on pln line
Uncategorised driver error (Group 5):
NFUC1‐‐J
NPT SPAD caused by uncategorised driver error at junc
NFUC1‐‐JO
NPT SPAD caused by uncategorised driver error at junc SAS O
NFUC1‐‐JS
NPT SPAD due to uncategorised driver error at shunt
NFUC1‐‐JOS
NPT SPAD due to uncategorised driver error at shunt SAS O
NFUC1‐‐PO
NPT SPAD due to uncategorised driver error on pln line SAS O
NFUC1‐‐JP
NPT SPAD caused by uncategorised driver error at junc SAS P
NFUC1‐‐P
NPT SPAD due to uncategorised driver error on pln line
NFUC1‐‐PP
NPT SPAD due to uncategorised driver error on pln line SAS P
NFUC1‐‐JPS
NPT SPAD due to uncategorised driver error at shunt SAS P
Other environmental:
NFE1‐‐J
NPT SPAD caused by other environmental conditions at junc
NFE2‐‐J
NPT SPAD caused by vegetation on the track at junc
NFE1‐‐P
NPT SPAD due to other environmental conditions on pln line
NFE1‐‐JS
NPT SPAD due to other environmental conditions at shunt
NFE2‐‐JS
NPT SPAD due to vegetation on the track at shunt
NFE2‐‐P
NPT SPAD due to vegetation on the track on pln line
Rolling stock:
NFTRS1‐‐J
NPT SPAD caused by brake failure at junc
NFTRS2‐‐J
NPT SPAD caused by traction control failure at junc
NFTRS1‐‐JS
NPT SPAD due to brake failure at shunt
NFTRS2‐‐JS
NPT SPAD due to traction control failure at shunt
NFTRS1‐‐P
NPT SPAD due to brake failure on pln line
NFTRS2‐‐P
NPT SPAD due to traction control failure on pln line
Train misroute:
NPSEDEC
NPT misroute due to signaller decision making failures
NPSEMEM
NPT misroute due to signaller memory lapses
NPSEUNC
NPT misroute due to unknown signaller issues
NPSEPER
NPT misroute due to signaller perception issues
NPSEACT
NPT misroute due to signaller action failures
Cause precursor description
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
9.02E‐13
9.02E‐13
3.83E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
2.59E‐12
1.83E‐12
1.44E‐12
9.63E‐13
7.15E‐13
5.94E‐13
6.13E‐13
4.96E‐13
3.34E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.17E‐12
1.45E‐12
8.53E‐13
4.18E‐13
4.18E‐13
1.71E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.05E‐11
2.43E‐12
1.01E‐12
7.01E‐13
2.86E‐13
1.98E‐13
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.82E‐12
1.90E‐12
8.30E‐13
3.26E‐13
7.39E‐14
6.22E‐05
6.22E‐05
2.64E‐05
6.61E‐04
1.78E‐04
1.26E‐04
9.95E‐05
6.64E‐05
4.93E‐05
4.10E‐05
4.23E‐05
3.42E‐05
2.30E‐05
5.16E‐04
2.88E‐04
9.97E‐05
5.88E‐05
2.88E‐05
2.88E‐05
1.18E‐05
0.0010
7.24E‐04
1.67E‐04
6.97E‐05
4.83E‐05
1.97E‐05
1.37E‐05
5.49E‐04
3.33E‐04
1.31E‐04
5.72E‐05
2.25E‐05
5.09E‐06
4.16E‐05
4.16E‐05
1.73E‐05
4.49E‐04
1.24E‐04
8.79E‐05
6.65E‐05
4.43E‐05
3.23E‐05
2.85E‐05
2.77E‐05
2.24E‐05
1.54E‐05
3.84E‐04
2.22E‐04
7.71E‐05
3.85E‐05
1.92E‐05
1.92E‐05
7.71E‐06
7.90E‐04
5.60E‐04
1.29E‐04
4.66E‐05
3.23E‐05
1.29E‐05
8.96E‐06
4.24E‐04
2.57E‐04
1.01E‐04
4.42E‐05
1.74E‐05
3.94E‐06
0.03%
0.03%
0.01%
0.35%
0.10%
0.07%
0.05%
0.03%
0.03%
0.02%
0.02%
0.02%
0.01%
0.30%
0.17%
0.06%
0.03%
0.02%
0.02%
0.01%
0.62%
0.44%
0.10%
0.04%
0.03%
0.01%
0.01%
0.33%
0.20%
0.08%
0.03%
0.01%
0.00%
E
E
E
D
E
D
D
D
E
D
E
E
D
E
D
E
E
D
D
E
D
E
D
E
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
31
Table B1
National frequency
Hazardous event code
Precursor code
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03A
HET‐03B
HET‐03B
HET‐03B
HET‐03B
HET‐03B
HET‐03B
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
HET‐03 POS
Wrongside signal failures:
NPC/L‐‐J
NPT WSF due to coloured light at junc signal
NPC/L‐‐P
NPT WSF due to coloured light at pln signal
NPUNCAT‐‐JS
NPT WSF due to uncategorised at junc shunt signal
NPUNCAT‐‐J
NPT WSF due to uncategorised at junc signal
NPUNCAT‐‐P
NPT WSF due to uncategorised at pln signal
NPSHUNT‐‐JS
NPT WSF due to shunt signal
NPT/C‐‐JS
NPT WSF due to track circuit at junc shunt signal
NPT/C‐‐J
NPT WSF due to track circuit at junc signal
NPT/C‐‐P
NPT WSF due to track circuit at pln signal
NPSEM‐‐J
NPT WSF due to semaphore signal at junc signal
NPSEM‐‐P
NPT WSF due to semaphore signal at pln signal
Collision between two non‐passenger trains resulting from a non‐passenger train runaway
NDRVERR‐NE
NPT runaway due to driver error
NBRKDEF‐NE
NPT runaway due to vehicle defect/brake failure
NMISCERRNE
NPT runaway due to unknown failure
NVAND‐‐‐NE
NPT runaway due to vandalism activity
NCOUPDEFNE
NPT runaway due to coupling failure
Collisions between trains inside possession (including OTP)
OCSSOW‐‐‐H
Unsafe System of Work employed by workers leading to collision ‐ Inside Possession
OCDRVATENH
Driver/operator error ‐ Inattention leading to collision ‐ Inside Possession
OCINFDEF‐F
Infrastructure defect leading to collision between ‐ Inside Possession
OCDRVBRK‐H
Driver/operator error ‐ Braking leading to collision ‐ Inside Possession
OCDRVPROPH
Driver/operator error ‐ Propelling leading to collision ‐ Inside Possession
OCDRVSPEDH
Driver/operator error ‐ Speeding leading to collision ‐ Inside Possession
OCHSIGERRH
Handsignaller error leading to collision ‐ Inside Possession
OCIMINT‐‐H
Incorrect management of IC interface leading to collision ‐ Inside Possession
OCVEHDEF‐F
Vehicle defect leading to collision ‐ Inside Possession
OCSIGERR‐H
Signaller error leading to collision ‐ Inside Possession
OCDRVSPADH
Driver/operator error ‐ Signal Passed at Danger leading to collision ‐ Inside Possession
HET‐04
HET‐04A
HET‐04A
HET‐04A
HET‐04A
Collision of train with object (not resulting in derailment)
Collision of train with object outside possession (not resulting in derailment)
BVANOBJTHR
Train collision with objects thrown/fired at trains by vandals
AANMOBJEUE
Train collision with animals on the line (excluding birds)
BTREOBJEUE
Train collision with trees/branches/vegetation
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
(events/
year)
(FWI/
year)
7.74E‐04
1.85E‐04
1.48E‐04
1.32E‐04
1.13E‐04
9.04E‐05
4.34E‐05
2.28E‐05
1.95E‐05
1.56E‐05
2.69E‐06
2.15E‐06
0.0666
0.0357
0.0178
0.0107
0.0012
0.0012
0.0297
0.0105
0.0060
0.0030
0.0022
0.0022
0.0015
0.0015
0.0015
7.47E‐04
2.58E‐04
2.58E‐04
0.60%
0.14%
0.12%
0.10%
0.09%
0.07%
0.03%
0.02%
0.02%
0.01%
0.00%
0.00%
51.92%
27.82%
13.91%
8.34%
0.93%
0.93%
23.13%
8.16%
4.66%
2.33%
1.75%
1.75%
1.17%
1.17%
1.17%
0.58%
0.20%
0.20%
0.7811
0.4040
0.2280
0.0382
0.0260
100.00%
51.72%
29.19%
4.89%
3.32%
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
3.47E‐12
3.27E‐12
2.87E‐12
2.12E‐12
2.00E‐12
9.43E‐13
4.95E‐13
3.66E‐13
3.46E‐13
5.05E‐14
4.76E‐14
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
8.77E‐10
4.38E‐10
2.63E‐10
2.92E‐11
2.92E‐11
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
9.39E‐07
5.37E‐07
2.68E‐07
2.01E‐07
2.01E‐07
1.34E‐07
1.34E‐07
1.34E‐07
6.71E‐08
2.31E‐08
2.31E‐08
0.0011
2.39E‐04
2.26E‐04
1.98E‐04
1.46E‐04
1.38E‐04
6.50E‐05
3.41E‐05
2.52E‐05
2.38E‐05
3.48E‐06
3.28E‐06
0.1128
0.0604
0.0302
0.0181
0.0020
0.0020
5.670
2.000
1.143
0.5714
0.4286
0.4286
0.2857
0.2857
0.2857
0.1429
0.0493
0.0493
1.90E‐06
1.02E‐06
6.93E‐07
3696.8
3671.8
1056.0
568.0
386.0
Tot trn km
Tot trn km
Tot trn km
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
D
D
D
D
D
D
D
D
D
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
D
D
‐
‐
‐
‐
‐
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
32
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
Normaliser
HET‐04A
HET‐04A
HET‐04A
CAUNOTEST
BVANMISCUE
ABIRDOBJEUE
HET‐04A
BVANCONCUE
HET‐04A
BVANRUBLUE
HET‐04A
BVANTROLUE
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
HET‐04A
MMATOTHEUE
UOBJTHRWTE
BBICYOBJUE
MINFAULTUE
MISCOBJEUE
MTCERROBJE
BBLNOBJEUE
YOBJECTSUH
HBALOBJEUE
RGATEBARUE
BVANDETSUE
ROBJSUSPUE
RLNSOBJEUF
YOBJECTSUF
PTRAOBJEPF
BVANOBSUUE
ROHLOBJEUF
BVANOHLE
RBGDOBJEUF
MVFOOBJEUE
BVANSOFMAT
UOOGOBJ‐TE
BVANVEHIUE
BVANTHRTRN
PLATOBJEUE
PLCOOBJEUE
Train collision with object: cause/object not established
Train collision with misc. objects placed/thrown on the line by vandals
Train collision with birds
Train collision with concrete blocks / troughing lids / stones (including ballast) placed/thrown on the line by vandals
Train collision with rubble/rubbish/debris placed/thrown on the line by vandals
Train collision with shopping trolleys/bin/pram/wheel barrow placed/thrown on the line by vandals
Train collision with workforce engineering material/equipment left foul (including boards)
Train collision with object thrown up by passing train
Train collision with bicycles/tricycles/ child's scooter placed/thrown on the line by vandals
Train collision with object due to infrastructure defect/fault
Train collision with miscellaneous objects on the line
Train collision with detonators/possession marker boards incorrectly placed on the line Train collision with objects blown onto the line
Train collision with infrastructure (eg bridge, signal, cable) due to human error
Train collision with high ballast
Train striking gates / barriers at level crossing
Train collision with detonators placed/thrown on the line by vandals
Train collision with object suspended from bridge/tunnel/signals (including icicles)
Train collision with debris from landslips
Train collision with object due to defective rail vehicle
Train collision with objects/debris fallen from trains
Train collision with object suspended from bridge/tunnel/signal by vandals
Train collision with debris from OHLE structures
Train collision with debris on OHLE structures due to vandalism
Train collision with debris from overbridges
Train collision with maintenance vehicles left foul
Train collision with sofa/mattress placed on the line by vandals
Train collision with out of gauge item on passing train
Train collision with motorbike left on the line by vandals
Train collision with objects/debris (eg seat cushions) thrown from train by vandals
Train collision with objects fallen from platform
Train collision with debris from platform collapse
Version 7.1 — August 2011
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Tot trn km
Tot trn km
Tot trn km
5.69E‐07
5.44E‐07
3.16E‐07
317.0
303.0
176.0
0.0213
0.0204
0.0118
2.73%
2.61%
1.52%
D
D
D
‐
‐
‐
Tot trn km
2.55E‐07
142.0
0.0096
1.22%
D
‐
Tot trn km
1.83E‐07
102.0
0.0069
0.88%
D
‐
Tot trn km
1.33E‐07
74.00
0.0050
0.64%
D
‐
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
1.27E‐07
1.18E‐07
1.01E‐07
9.51E‐08
9.33E‐08
9.15E‐08
6.64E‐08
3.77E‐08
3.59E‐08
2.69E‐08
2.69E‐08
2.69E‐08
2.15E‐08
2.15E‐08
1.79E‐08
1.62E‐08
1.44E‐08
1.35E‐08
1.08E‐08
4.49E‐09
3.59E‐09
3.59E‐09
3.59E‐09
2.69E‐09
1.79E‐09
5.13E‐10
71.00
66.00
56.00
53.00
52.00
51.00
37.00
21.00
20.00
15.00
15.00
15.00
12.00
12.00
10.00
9.000
8.000
7.500
6.000
2.500
2.000
2.000
2.000
1.500
1.000
0.2857
0.0048
0.0044
0.0038
0.0036
0.0035
0.0034
0.0025
0.0014
0.0013
0.0010
0.0010
0.0010
8.07E‐04
8.07E‐04
6.73E‐04
6.06E‐04
5.38E‐04
5.05E‐04
4.04E‐04
1.68E‐04
1.35E‐04
1.35E‐04
1.35E‐04
1.01E‐04
6.73E‐05
1.92E‐05
0.61%
0.57%
0.48%
0.46%
0.45%
0.44%
0.32%
0.18%
0.17%
0.13%
0.13%
0.13%
0.10%
0.10%
0.09%
0.08%
0.07%
0.06%
0.05%
0.02%
0.02%
0.02%
0.02%
0.01%
0.01%
0.00%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
33
Table B1
National frequency
Hazardous event code
HET‐04B
HET‐04B
HET‐04B
HET‐04B
HET‐04B
HET‐04B
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
HET‐04 POS
Precursor code
Cause precursor description
Collision of train with RV outside possession (not resulting in derailment)
RVSRTAF
RV struck ‐ RTA ‐ vehicle on lineside via fence/wall
RVSRTAE
RV struck ‐ RTA ‐ vehicle on lineside via embankment/bank
RVSOTH
RV struck ‐ other cause
RVSRTAB
RV struck ‐ RTA ‐ vehicle on lineside via bridge
RVSVANDA
RV struck ‐ criminal/vandal activity ‐ vehicle on lineside
Collision of train with object inside possession (not resulting in derailment)
Inadequate Controls / Management leading to collision between train and an obstruction OT05I20T
on/near running line ‐ inside possession
Driver/operator error ‐ inattention leading to collision between train and an obstruction OT05I12T
on/near running line ‐ inside possession
Infrastructure Defect leading to collision between train and an obstruction on/near running OT05I32T
line ‐ inside possession
Maintenance Equipment/Tools on/near running line leading to collision between train and OT05I37T
an obstruction on/near running line ‐ inside possession
Unsafe System of Work Employed by Workers leading to collision between train and an OT05I54T
obstruction on/near running line ‐ inside possession
Defect on train leading to collision between train and an obstruction on/near running line ‐ OT05I59T
inside possession
Vandalism leading to collision between train and an obstruction on/near running line ‐ OT05I55T
inside possession
Driver/Operator Error ‐ speeding leading to collision between train and an obstruction OT05I15T
on/near running line ‐ inside possession
Driver/Operator Error ‐ braking leading to collision between train and an obstruction OT05I11T
on/near running line ‐ inside possession
OT05I60T
Collision between train and animals on the line – inside possession
OT05I61T
RV struck ‐ collision with train inside possession
Miscommunication leading to collision between train and an obstruction on/near running OT05I31T
line ‐ inside possession
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Tot trn km
2.24E‐09
7.69E‐10
7.69E‐10
3.59E‐10
2.39E‐09
3.640
1.250
0.4286
0.4286
0.2000
1.333
21.39
0.3703
0.1993
0.0683
0.0683
0.0319
0.0025
0.0068
47.40%
25.51%
8.75%
8.75%
4.08%
0.32%
0.88%
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
OTP hrs
3.29E‐06
7.000
0.0022
0.29%
E
‐
OTP hrs
2.35E‐06
5.000
0.0016
0.20%
D
‐
OTP hrs
1.41E‐06
3.000
9.61E‐04
0.12%
D
‐
OTP hrs
9.39E‐07
2.000
6.40E‐04
0.08%
D
‐
OTP hrs
9.39E‐07
2.000
6.40E‐04
0.08%
E
‐
OTP hrs
9.39E‐07
2.000
6.40E‐04
0.08%
D
‐
OTP hrs
6.71E‐08
0.1429
4.57E‐05
0.01%
D
‐
OTP hrs
2.37E‐08
0.0504
1.61E‐05
0.00%
E
‐
OTP hrs
2.37E‐08
0.0504
1.61E‐05
0.00%
E
‐
OTP hrs
OTP hrs
2.37E‐08
2.37E‐08
0.0504
0.0504
1.61E‐05
1.61E‐05
0.00%
0.00%
D
E
‐
‐
OTP hrs
2.37E‐08
0.0504
1.61E‐05
0.00%
E
‐
34
Table B1
National frequency
Hazardous event code
HET‐06
HET‐06A
HET‐06A
HET‐06A
HET‐06A
HET‐06A
HET‐06A
HET‐06B
Precursor code
Cause precursor description
HET‐06C
HET‐06C
Collision between two passenger trains in station (permissive working)
Collision between two passenger trains in station (permissive working): rollbacks
PPWRDRHBPH
Driver failure to apply brakes leading to roll back permissive working collision
PPWRDRSUPH
Driver error during train set‐up leading to roll back permissive working collision
PPWRDRBKPH
Driver inadvertent brake release leading to roll back permissive working collision
PPWRDRSDPH
Driver error during train shutdown leading to roll back permissive working collision
PPWRBRK‐PF
Defective brakes leading to roll back permissive working collision
Collision between two passenger trains in station (permissive working): no potential for high‐speed impact
Driver error while coupling/uncoupling units leading to permissive working collision: no PPWLDRSPPH
potential for high‐speed impact
Driver error accidentally selecting reverse instead of forwards leading to permissive working PPWLDRREVH
collision: no potential for high‐speed impact
Driver error when propelling leading to permissive working collision: no potential for high‐
PPWLDRPRPH
speed impact
Collision between two passenger trains in station (permissive working): potential for high‐speed impact
Driver misjudges braking/failure to control train leading to permissive working collision: PPWPDRBKPH
potential for high‐speed impact
Driver loss of concentration leading to permissive working collision: potential for high‐speed PPWPDRCOPH
impact
Low adhesion due to rail contamination leading to permissive working collision: potential TPWPAHRCPE
for high‐speed impact
Low adhesion due to weather conditions leading to permissive working collision: potential WPWPAHWTPE
for high‐speed impact
PPWPDREXPH
Driver inexperience leading to permissive working collision: potential for high‐speed impact
PPWPBRK‐PF
Defective brakes leading to permissive working collision: potential for high‐speed impact
HET‐09
HET‐09A
HET‐09A
HET‐09A
HET‐09A
HET‐09A
HET‐09A
HET‐09A
Train collision with buffer stops
Train collision with buffer stops: rollbacks
PBSRDRSUPH
Driver error during train set‐up leading to roll back buffer stop collision
PBSRDRGNPH
Workforce error (general) leading to roll back buffer stop collision
PBSRDRHBPH
Driver failure to apply brakes leading to roll back buffer stop collision
PBSRDRBKPH
Driver inadvertent brake release leading to roll back buffer stop collision
PBSRBRK‐PF
Defective brakes leading to roll back buffer stop collision
PBSRDRSDPH
Driver error during train shutdown leading to roll back buffer stop collision
HET‐06B
HET‐06B
HET‐06B
HET‐06C
HET‐06C
HET‐06C
HET‐06C
HET‐06C
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
5.804
2.726
1.0000
0.6667
0.6667
0.2500
0.1429
1.643
0.0528
0.0045
0.0016
0.0011
0.0011
4.11E‐04
2.35E‐04
0.0028
100.00%
8.48%
3.11%
2.07%
2.07%
0.78%
0.44%
5.37%
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
2.05E‐09
1.37E‐09
1.37E‐09
5.12E‐10
2.93E‐10
Pass trn km
2.39E‐09
1.167
0.0020
3.81%
D
‐
Pass trn km
6.83E‐10
0.3333
5.75E‐04
1.09%
D
‐
Pass trn km
2.93E‐10
0.1429
2.47E‐04
0.47%
D
‐
1.435
0.0455
86.14%
‐
Pass trn km
1.37E‐09
0.6667
0.0211
40.03%
D
‐
Pass trn km
5.85E‐10
0.2857
0.0091
17.16%
D
‐
Pass trn km
2.93E‐10
0.1429
0.0045
8.58%
D
‐
Pass trn km
2.93E‐10
0.1429
0.0045
8.58%
D
‐
Pass trn km
Pass trn km
2.56E‐10
1.46E‐10
0.1250
0.0714
0.0040
0.0023
7.51%
4.29%
D
D
‐
‐
2.31E‐09
8.46E‐10
6.34E‐10
5.29E‐10
3.17E‐10
3.17E‐10
7.129
2.419
1.129
0.4129
0.3097
0.2581
0.1548
0.1548
0.1159
0.0040
0.0019
6.78E‐04
5.09E‐04
4.24E‐04
2.54E‐04
2.54E‐04
100.00%
3.43%
1.60%
0.58%
0.44%
0.37%
0.22%
0.22%
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
35
Table B1
National frequency
Hazardous event code
HET‐09B
HET‐09B
HET‐09B
HET‐09B
HET‐09B
HET‐09B
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09C
HET‐09 POS
HET‐09 POS
HET‐09 POS
HET‐09 POS
HET‐09 POS
HET‐09 POS
HET‐09 POS
HET‐09 POS
HET‐09 POS
Precursor code
Cause precursor description
Train collision with buffer stops: no potential for high speed impact
PBSLDRBTPH
Driver error using couple/ uncouple button leading to buffer stop collision
PBSLDRSPPH
Driver error while splitting units leading to buffer stop collision
Driver error accidentally selecting reverse instead of forwards leading to buffer stop PBSLDRREVH
collision PBSDSCOMPH
Workforce communication failure leading to buffer stop collision
PBSLDRPRPH
Driver error when propelling leading to buffer stop collision
Train collision with buffer stops: potential for high speed impact
PBSMSBK2PH
Driver misjudges braking leading to buffer stop collision
PBSPBRK‐PF
Defective brakes leading to buffer stop collision
PBSPDRCOPH
Driver loss of concentration leading to buffer stop collision
WBSPAHLFPE
Low adhesion due to leaves leading to buffer stop collision PBSPDREXPH
Driver inexperience leading to buffer stop collision PBSPDRILPH
Driver medical condition leading to buffer stop collision
TBSPAHRCPE
Low adhesion due to rail contamination leading to buffer stop collision
WBSPAHWTPE
Low adhesion due to weather conditions leading to buffer stop collision
TBSPAHDRPH
Low adhesion and driver fails to adjust to conditions leading to buffer stop collision PBSPCONTPF
Defective train control equipment leading to buffer stop collision PBSRUNAWPH
Run‐away train leading to buffer stop collision
Train collision with buffer stops: OTP inside possession
Driver/Operator error ‐ inattention leading to collision between OTP and buffers ‐ inside OT03I12T
possession
Driver/Operator error ‐ speeding leading to collision between OTP and buffers ‐ inside OT03I15T
possession
Driver/Operator error ‐ braking leading to collision between OTP and buffers ‐ inside OT03I11T
possession OT03I32T
Infrastructure defect leading to collision between OTP and buffers ‐ inside possession
OT03I59T
Defect on OTP leading to collision between OTP and buffers ‐ inside possession Driver/Operator error ‐ propelling leading to collision between OTP and buffers ‐ inside OT03I13T
possession
Driver/Operator error ‐ SPAD leading to collision between OTP and buffers ‐ inside OT03I14T
possession
Incorrect management of Infrastructure Manager interface leading to collision between OTP OT03I31T
and buffers ‐ inside possession
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Pass trn km
1.85E‐09
8.22E‐10
1.813
0.9032
0.4014
0.0031
0.0016
6.93E‐04
2.70%
1.34%
0.60%
D
D
‐
‐
‐
Pass trn km
7.52E‐10
0.3669
6.33E‐04
0.55%
D
‐
Pass trn km
Pass trn km
2.06E‐10
8.41E‐11
2.54E‐09
8.74E‐10
4.77E‐10
4.63E‐10
3.18E‐10
2.82E‐10
2.31E‐10
1.85E‐10
1.59E‐10
7.95E‐11
4.85E‐11
1.73E‐04
7.09E‐05
0.1083
0.0487
0.0167
0.0091
0.0088
0.0061
0.0054
0.0044
0.0035
0.0030
0.0015
9.27E‐04
5.52E‐04
0.15%
0.06%
93.40%
41.97%
14.43%
7.87%
7.63%
5.25%
4.65%
3.82%
3.05%
2.62%
1.31%
0.80%
0.48%
D
D
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
0.1004
0.0411
2.764
1.242
0.4269
0.2329
0.2258
0.1552
0.1376
0.1129
0.0903
0.0776
0.0388
0.0237
0.1333
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
OTP hrs
2.63E‐08
0.0560
2.32E‐04
0.20%
E
‐
OTP hrs
1.25E‐08
0.0267
1.10E‐04
0.10%
E
‐
OTP hrs
1.25E‐08
0.0267
1.10E‐04
0.10%
E
‐
OTP hrs
OTP hrs
3.13E‐09
3.13E‐09
0.0067
0.0067
2.76E‐05
2.76E‐05
0.02%
0.02%
E
E
‐
‐
OTP hrs
2.50E‐09
0.0053
2.21E‐05
0.02%
E
‐
OTP hrs
1.88E‐09
0.0040
1.66E‐05
0.01%
E
‐
OTP hrs
6.26E‐10
0.0013
5.52E‐06
0.00%
E
‐
D
D
D
D
D
D
D
D
D
D
E
36
Table B1
National frequency
Hazardous event code
HET‐10
HET‐10A
HET‐10A
HET‐10A
HET‐10A
HET‐10A
HET‐10A
HET‐10A
HET‐10A
HET‐10A
HET‐10A
HET‐10A
HET‐10B
HET‐10B
HET‐10B
HET‐10B
HET‐10B
HET‐10B
HET‐10B
HET‐10B
HET‐10B
HET‐10B
HET‐10C
HET‐10C
HET‐10C
HET‐10C
HET‐10C
HET‐10C
Precursor code
Cause precursor description
Passenger train collision with road vehicle on level crossing
Passenger train collision with road vehicle on level crossing: MCB + CCTV
VCCTVRTATE
RV struck by train ‐ on MCB + CCTV ‐ RV incorrectly on LC due to RTA
VCCTVSPDTH
RV struck by train ‐ on MCB + CCTV ‐ SPAD at signal protecting the LC
RV struck by train ‐ on MCB + CCTV ‐ RV incorrectly on LC due to environmental VCCTVEBLTE
factors/driver error: user brakes too late
VCCTVATRTH
RV struck by train ‐ on MCB + CCTV ‐ RV driver error: road user turns onto the railway
VCCTVMANTH
RV struck by train ‐ on MCB + CCTV ‐ railway staff error in manual control
VCCTVDELTH
RV struck by train ‐ on MCB + CCTV ‐ RV driver deliberate action
LCCTVSKPTH
RV struck by train ‐ on MCB + CCTV ‐ signaller/crossing keeper error
VCCTVASETH
RV struck by train ‐ on MCB + CCTV ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on MCB + CCTV ‐ RV incorrectly on LC due to environmental factors: VCCTVESNTE
sunlight obscures crossing/lights
RV struck by train ‐ on MCB + CCTV ‐ RV incorrectly on LC due to environmental factors: poor VCCTVEVSTE
crossing visibility
Passenger train collision with road vehicle on level crossing: MCB
RV struck by train ‐ on MCB ‐ RV incorrectly on LC due to environmental factors/driver error: VMCB‐EBLTE
user brakes too late
LMCB‐SKPTH
RV struck by train ‐ on MCB ‐ signaller/crossing keeper error
VMCB‐SPDTH
RV struck by train ‐ on MCB ‐ SPAD at signal protecting the LC
VMCB‐ATRTH
RV struck by train ‐ on MCB ‐ RV driver error: road user turns onto the railway
VMCB‐DELTH
RV struck by train ‐ on MCB ‐ RV driver deliberate action
VMCB‐ASETH
RV struck by train ‐ on MCB ‐ RV driver error: fails to observe level crossing RV struck by train ‐ on MCB ‐ RV incorrectly on LC due to environmental factors: sunlight VMCB‐ESNTE
obscures crossing/lights
VMCBRTA‐TE
RV struck by train ‐ on MCB ‐ RV incorrectly on LC due to RTA
RV struck by train ‐ on MCB ‐ RV incorrectly on LC due to environmental factors: poor VMCB‐EVSTE
crossing visibility
Passenger train collision with road vehicle on level crossing: MCG
LMCG‐SKPTH
RV struck by train ‐ on MCG ‐ signaller/crossing keeper error
RV struck by train ‐ on MCG ‐ RV driver deliberate action
VMCG‐DELTH
RV struck by train ‐ on MCG ‐ RV incorrectly on LC due to environmental factors/driver error: VMCG‐EBLTE
user brakes too late
VMCG‐ASETH
RV struck by train ‐ on MCG ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on MCG ‐ RV incorrectly on LC due to environmental factors: sunlight VMCG‐ESNTE
obscures crossing/lights
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Pass trn km
1.21E‐10
5.68E‐11
12.35
0.1761
0.0592
0.0277
2.969
0.0608
0.0204
0.0096
100.00%
2.05%
0.69%
0.32%
D
E
‐
‐
‐
‐
Pass trn km
3.95E‐11
0.0193
0.0067
0.22%
E
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
3.16E‐11
2.79E‐11
2.53E‐11
1.89E‐11
1.76E‐11
0.0154
0.0136
0.0123
0.0092
0.0086
0.0053
0.0047
0.0043
0.0032
0.0030
0.18%
0.16%
0.14%
0.11%
0.10%
E
E
E
E
E
‐
‐
‐
‐
‐
Pass trn km
1.50E‐11
0.0073
0.0025
0.09%
E
‐
Pass trn km
7.11E‐12
0.0035
0.0012
0.04%
E
‐
0.2978
0.1031
3.47%
‐
Pass trn km
2.56E‐10
0.1248
0.0432
1.46%
D
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
2.43E‐10
2.57E‐11
2.32E‐11
1.93E‐11
1.45E‐11
0.1184
0.0126
0.0113
0.0094
0.0071
0.0410
0.0043
0.0039
0.0033
0.0025
1.38%
0.15%
0.13%
0.11%
0.08%
D
E
E
E
E
‐
‐
‐
‐
‐
Pass trn km
1.24E‐11
0.0060
0.0021
0.07%
E
‐
Pass trn km
1.10E‐11
0.0054
0.0019
0.06%
E
‐
Pass trn km
5.83E‐12
0.0028
9.86E‐04
0.03%
E
‐
Pass trn km
Pass trn km
1.02E‐10
5.80E‐11
0.1054
0.0497
0.0283
0.0358
0.0169
0.0096
1.21%
0.57%
0.32%
D
D
‐
‐
‐
Pass trn km
2.41E‐11
0.0118
0.0040
0.13%
E
‐
Pass trn km
1.14E‐11
0.0055
0.0019
0.06%
E
‐
Pass trn km
9.76E‐12
0.0048
0.0016
0.05%
E
‐
37
Table B1
National frequency
Hazardous event code
Precursor code
HET‐10C
VMCG‐SPDTH
HET‐10C
HET‐10C
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10D
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
Cause precursor description
RV struck by train ‐ on MCG ‐ SPAD at signal protecting the LC
RV struck by train ‐ on MCG ‐ RV incorrectly on LC due to environmental factors: poor VMCG‐EVSTE
crossing visibility
VMCGRTA‐TE
RV struck by train ‐ on MCG ‐ RV incorrectly on LC due to RTA
Passenger train collision with road vehicle on level crossing: ABCL
VABCLASETH
RV struck by train ‐ on ABCL ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on ABCL ‐ RV incorrectly on LC due to environmental factors: sunlight VABCLESNTE
obscures crossing/lights
RV struck by train ‐ on ABCL ‐ RV incorrectly on LC due to environment factors/driver error: VABCLEBLTE
user brakes too late VABCLDRRTH
RV struck by train ‐ on ABCL ‐ train driver error
VABCLAGDTH
RV struck by train ‐ on ABCL ‐ RV driver error: grounding
VABCLSTRTE
RV struck by train ‐ on ABCL ‐ RV stranded/failed on LC
VABCLVANTE
RV struck by train ‐ on ABCL ‐ RV deliberately placed on level crossing
PABCLOVSTH
RV struck by train ‐ on ABCL ‐ train driver error: train overspeeding
VABCLDELTH
RV struck by train ‐ on ABCL ‐ RV driver deliberate action: ignores lights
LABCLBLETF
RV struck by train ‐ on ABCL ‐ equipment failure: lights/barriers fail to operate
VABCLASTTH
RV struck by train ‐ on ABCL ‐ RV driver error: second train coming
RV struck by train ‐ on ABCL ‐ RV incorrectly on LC due to environmental factors: poor VABCLEVSTE
crossing visibility
VABCLABBTH
RV struck by train ‐ on ABCL ‐ RV driver error: blocking back
VABCLRTATE
RV struck by train ‐ on ABCL ‐ RV incorrectly on LC due to RTA
VABCLMANTH
RV struck by train ‐ on ABCL ‐ railway staff error in manual control
LABCLDETTF
RV struck by train ‐ on ABCL ‐ equipment failure: failure to detect approaching train
VABCLATRTH
RV struck by train ‐ on ABCL ‐ RV driver error: road user turns onto the railway
VABCLSUIXPE
RV struck by train ‐ on ABCL ‐ RV driver suicide
PABCLSPDTH
RV struck by train ‐ on ABCL ‐ SPAD at stop sign protecting the LC
Passenger train collision with road vehicle on level crossing: AHB
VAHB‐DELTH
RV struck by train ‐ on AHB ‐ RV driver deliberate action: zigzags barriers
RV struck by train ‐ on AHB ‐ RV incorrectly on LC due to environmental factors/driver error: VAHB‐EBLTE
user brakes too late
VAHB‐STRTE
RV struck by train ‐ on AHB ‐ RV stranded/failed on LC
VAHB‐ASETH
RV struck by train ‐ on AHB ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on AHB ‐ RV incorrectly on LC due to environmental factors: sunlight VAHB‐ESNTE
obscures crossing/lights
VAHB‐ABBTH
RV struck by train ‐ on AHB ‐ RV driver error: blocking back
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
4.60E‐12
0.0022
7.63E‐04
0.03%
E
‐
Pass trn km
4.39E‐12
0.0021
7.29E‐04
0.02%
E
‐
Pass trn km
1.96E‐12
1.59E‐10
3.26E‐04
0.0575
0.0108
0.01%
1.94%
0.37%
E
Pass trn km
9.58E‐04
0.4195
0.0778
D
‐
‐
‐
Pass trn km
1.56E‐10
0.0759
0.0106
0.36%
D
‐
Pass trn km
1.46E‐10
0.0715
0.0100
0.34%
D
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
9.42E‐11
6.55E‐11
6.55E‐11
4.78E‐11
3.61E‐11
2.66E‐11
2.32E‐11
9.97E‐12
0.0460
0.0320
0.0320
0.0233
0.0176
0.0130
0.0113
0.0049
0.0064
0.0045
0.0045
0.0033
0.0025
0.0018
0.0016
6.78E‐04
0.22%
0.15%
0.15%
0.11%
0.08%
0.06%
0.05%
0.02%
E
E
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
6.17E‐12
0.0030
4.20E‐04
0.01%
E
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
3.48E‐12
2.32E‐12
9.28E‐13
8.00E‐13
6.83E‐13
1.45E‐11
1.89E‐13
1.26E‐09
2.37E‐04
1.58E‐04
6.31E‐05
5.45E‐05
4.65E‐05
3.08E‐05
1.29E‐05
0.9206
0.2124
0.01%
0.01%
0.00%
0.00%
0.00%
0.00%
0.00%
31.01%
7.16%
E
E
E
E
E
E
E
Pass trn km
0.0017
0.0011
4.53E‐04
3.91E‐04
3.34E‐04
0.0071
9.22E‐05
3.371
0.6144
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
8.97E‐10
0.4381
0.1515
5.10%
D
‐
Pass trn km
Pass trn km
7.57E‐10
5.18E‐10
0.3694
0.2531
0.1277
0.0875
4.30%
2.95%
D
D
‐
‐
Pass trn km
3.92E‐10
0.1913
0.0662
2.23%
D
‐
Pass trn km
3.74E‐10
0.1825
0.0631
2.12%
D
‐
38
Table B1
National frequency
Hazardous event code
Precursor code
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
HET‐10E
VAHB‐VANTE
VAHBRTA‐TE
VAHB‐ATRTH
VAHB‐AGDTH
VAHBSUIXPE
VAHB‐MANTH
LAHB‐DETTF
PAHB‐OVSTH
LAHB‐BLETF
VAHB‐ASTTH
HET‐10E
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
HET‐10F
Cause precursor description
RV struck by train ‐ on AHB ‐ RV deliberately placed on level crossing
RV struck by train ‐ on AHB ‐ RV incorrectly on LC due to RTA
RV struck by train ‐ on AHB ‐ RV driver error: road user turns onto the railway
RV struck by train ‐ on AHB ‐ RV driver error: grounding
RV struck by train ‐ on AHB ‐ RV driver suicide
RV struck by train ‐ on AHB ‐ railway staff error in manual control
RV struck by train ‐ on AHB ‐ equipment failure: failure to detect approaching train
RV struck by train ‐ on AHB ‐ train driver error: train overspeeding
RV struck by train ‐ on AHB ‐ equipment failure: lights/barriers fail to operate
RV struck by train ‐ on AHB ‐ RV driver error: second train coming
RV struck by train ‐ on AHB ‐ RV incorrectly on LC due to environmental factors: poor VAHB‐EVSTE
crossing visibility
Passenger train collision with road vehicle on level crossing: AOCL
VAOCLDELTH
RV struck by train ‐ on AOCL ‐ RV driver deliberate action: ignores lights / red light running
VAOCLASETH
RV struck by train ‐ on AOCL ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on AOCL ‐ RV incorrectly on LC due to environmental factors: sunlight VAOCLESNTE
obscures crossing/lights
RV struck by train ‐ on AOCL ‐ RV incorrectly on LC due to environmental factors/driver VAOCLEBLTE
error: user brakes too late LAOCLLSETF
RV struck by train ‐ on AOCL ‐ AOCL lights fail to operate
VAOCLVANTE
RV struck by train ‐ on AOCL ‐ road vehicle deliberately placed on level crossing
RV struck by train ‐ on AOCL ‐ RV incorrectly on LC due to environmental factors: poor VAOCLEVSTE
crossing visibility
VAOCLASTTH
RV struck by train ‐ on AOCL ‐ RV driver error: second train coming
VAOCLDRRTH
RV struck by train ‐ on AOCL ‐ train driver error
VAOCLAGDTH
RV struck by train ‐ on AOCL ‐ RV driver error: grounding/stuck
VAOCLSTRTE
RV struck by train ‐ on AOCL ‐ RV stranded/failed on LC
PAOCLOVSTH
RV struck by train ‐ on AOCL ‐ train driver error: train overspeeding
VAOCLABBTH
RV struck by train ‐ on AOCL ‐ RV driver error: blocking back
VAOCLRTATE
RV struck by train ‐ on AOCL ‐ RV incorrectly on LC due to RTA
LAOCLDETTF
RV struck by train ‐ on AOCL ‐ equipment failure: failure to detect approaching train
VAOCLATRTH
RV struck by train ‐ on AOCL ‐ RV driver error: road user turns onto the railway VAOCLSUIXPE
RV struck by train ‐ on AOCL ‐ RV driver suicide
PAOCLSPDTH
RV struck by train ‐ on AOCL ‐ SPAD at stop board protecting the LC
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
3.12E‐10
2.49E‐10
1.97E‐10
1.26E‐10
1.56E‐09
9.97E‐11
8.60E‐11
3.89E‐11
2.24E‐11
1.14E‐11
0.1523
0.1216
0.0960
0.0616
0.7614
0.0487
0.0420
0.0190
0.0109
0.0056
0.0527
0.0421
0.0332
0.0213
0.0183
0.0168
0.0145
0.0066
0.0038
0.0019
1.77%
1.42%
1.12%
0.72%
0.62%
0.57%
0.49%
0.22%
0.13%
0.07%
D
D
D
D
D
D
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
6.44E‐12
0.0031
0.0011
0.04%
E
‐
Pass trn km
Pass trn km
2.83E‐09
9.86E‐10
2.870
1.383
0.4816
0.3962
0.1911
0.0666
13.35%
6.44%
2.24%
D
D
‐
‐
‐
Pass trn km
7.33E‐10
0.3578
0.0495
1.67%
D
‐
Pass trn km
6.58E‐10
0.3213
0.0444
1.50%
D
‐
Pass trn km
Pass trn km
2.32E‐10
1.05E‐10
0.1134
0.0513
0.0157
0.0071
0.53%
0.24%
D
D
‐
‐
Pass trn km
9.66E‐11
0.0472
0.0065
0.22%
D
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
8.93E‐11
4.89E‐11
3.37E‐11
3.37E‐11
1.86E‐11
1.79E‐12
1.19E‐12
4.11E‐13
3.54E‐13
7.46E‐12
9.71E‐14
0.0436
0.0239
0.0164
0.0164
0.0091
8.72E‐04
5.82E‐04
2.01E‐04
1.73E‐04
0.0036
4.74E‐05
0.0060
0.0033
0.0023
0.0023
0.0013
1.21E‐04
8.04E‐05
2.78E‐05
2.39E‐05
1.15E‐05
6.55E‐06
0.20%
0.11%
0.08%
0.08%
0.04%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
D
D
E
E
E
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
39
Table B1
National frequency
Hazardous event code
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10G
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
HET‐10H
Precursor code
Cause precursor description
Passenger train collision with road vehicle on level crossing: UWC + MWL
VUWCMEFCTE
RV struck by train ‐ on UWC + MWL ‐ RV driver error: user fails to observe lights
VUWCMAMITE
RV struck by train ‐ on UWC + MWL ‐ RV driver error: misuse due to gates left open
RV struck by train ‐ on UWC + MWL ‐ RV incorrectly on LC due to environmental factors: VUWCMESNTE
sunlight obscures crossing/lights
VUWCMDELTH
RV struck by train ‐ on UWC + MWL ‐ RV driver deliberate action
VUWCMAGDTH RV struck by train ‐ on UWC + MWL ‐ RV driver error: grounding
LUWCM‐LETF
RV struck by train ‐ on UWC + MWL ‐ equipment failure: lights fail to operate
VUWCMSTRTE
RV struck by train ‐ on UWC + MWL ‐ RV stranded/failed on LC
VUWCMVANTE
RV struck by train ‐ on UWC + MWL ‐ RV deliberately placed on level crossing
VUWCMASTTH
RV struck by train ‐ on UWC + MWL ‐ RV driver error: second train coming
RV struck by train ‐ on UWC + MWL ‐ RV incorrectly on LC due to environmental factors: VUWCMEBLTE
user brakes too late
VUWCMRTATE
RV struck by train ‐ on UWC + MWL ‐ RV incorrectly on LC due to RTA
RV struck by train ‐ on UWC + MWL ‐ RV incorrectly on LC due to environmental factors: VUWCMEVSTE
poor crossing visibility
VUWCLSUIXPE
RV struck by train ‐ on UWC + MWL ‐ RV driver suicide
LUWCMDETTF
RV struck by train ‐ on UWC + MWL ‐ equipment failure: failure to detect approaching train
Passenger train collision with road vehicle on level crossing: UWC + T
RV struck by train ‐ on UWC + T ‐ RV driver error: road user fails to use phone to check line is VUWCTEFCTE
clear
VUWCTSKPTH
RV struck by train ‐ on UWC + T ‐ signaller/crossing keeper error
VUWCTAMITE
RV struck by train ‐ on UWC + T ‐ RV driver error: misuse due to gates left open
VUWCT‐DELTH
RV struck by train ‐ on UWC + T ‐ RV driver deliberate action
VUWCTVANTE
RV struck by train ‐ on UWC + T ‐ RV deliberately placed on level crossing
VUWCTAGDTH
RV struck by train ‐ on UWC + T ‐ RV driver error: grounding
VUWCT‐STRTE
RV struck by train ‐ on UWC + T ‐ RV stranded/failed on LC VUWCTASTTH
RV struck by train ‐ on UWC + T ‐ RV driver error: second train coming
RV struck by train ‐ on UWC + T ‐ RV incorrectly on LC due to environmental factors/driver VUWCTEBLTE
error: user brakes too late
VUWCTRTA‐TE
RV struck by train ‐ on UWC + T ‐ RV incorrectly on LC due to RTA
RV struck by train ‐ on UWC + T ‐ RV incorrectly on LC due to environmental factors: poor VUWCTEVSTE
crossing visibility
VUWCTSUIXPE
RV struck by train ‐ on UWC + T ‐ RV driver suicide
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Pass trn km
8.40E‐10
2.81E‐10
0.8075
0.4101
0.1372
0.2467
0.1255
0.0420
8.31%
4.23%
1.41%
D
D
‐
‐
‐
Pass trn km
1.73E‐10
0.0844
0.0258
0.87%
D
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.23E‐10
9.36E‐11
8.32E‐11
2.56E‐11
2.10E‐11
4.68E‐12
0.0600
0.0457
0.0406
0.0125
0.0102
0.0023
0.0184
0.0140
0.0124
0.0038
0.0031
6.99E‐04
0.62%
0.47%
0.42%
0.13%
0.11%
0.02%
E
D
D
E
E
E
‐
‐
‐
‐
‐
‐
Pass trn km
3.34E‐12
0.0016
4.99E‐04
0.02%
E
‐
Pass trn km
9.94E‐13
4.85E‐04
1.49E‐04
0.01%
E
‐
Pass trn km
7.07E‐13
3.45E‐04
1.06E‐04
0.00%
E
‐
Pass trn km
Pass trn km
3.99E‐12
2.20E‐13
0.0019
1.07E‐04
2.218
6.02E‐05
3.29E‐05
0.7090
0.00%
0.00%
23.88%
E
E
‐
‐
‐
Pass trn km
2.56E‐09
1.250
0.4004
13.49%
D
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
6.76E‐10
5.89E‐10
2.82E‐10
2.04E‐10
1.47E‐10
5.58E‐11
8.56E‐12
0.3299
0.2874
0.1375
0.0995
0.0719
0.0273
0.0042
0.1057
0.0921
0.0440
0.0319
0.0230
0.0087
0.0013
3.56%
3.10%
1.48%
1.07%
0.78%
0.29%
0.05%
D
D
D
D
D
D
E
‐
‐
‐
‐
‐
‐
‐
Pass trn km
7.23E‐12
0.0035
0.0011
0.04%
E
‐
Pass trn km
2.27E‐12
0.0011
3.56E‐04
0.01%
E
‐
Pass trn km
1.52E‐12
7.41E‐04
2.37E‐04
0.01%
E
‐
Pass trn km
9.13E‐12
0.0045
2.01E‐04
0.01%
E
‐
40
Table B1
National frequency
Hazardous event code
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10I
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
HET‐10J
Precursor code
Cause precursor description
Passenger train collision with road vehicle on level crossing: UWC
VUWC‐ASSTE
RV struck by train ‐ on UWC ‐ RV driver error: fails to stop, look and listen
VUWC‐AGDTH
RV struck by train ‐ on UWC ‐ RV driver error: grounding VUWC‐ASETE
RV struck by train ‐ on UWC ‐ RV driver error: poor sighting
VUWC‐AMITE
RV struck by train ‐ on UWC ‐ RV driver error: misuse due to gates left open
VUWC‐DELTH
RV struck by train ‐ on UWC ‐ RV driver deliberate action
VUWC‐VANTE
RV struck by train ‐ on UWC ‐ RV deliberately placed on level crossing
VUWC‐STRTE
RV struck by train ‐ on UWC ‐ RV stranded/failed on LC
RV struck by train ‐ on UWC ‐ RV incorrectly on LC due to environmental factors: sunlight VUWC‐ESNTE
obscures crossing/view up and down tracks
VUWC‐ASTTH
RV struck by train ‐ on UWC ‐ RV driver error: second train coming
RV struck by train ‐ on UWC ‐ RV incorrectly on LC due to environmental factors/driver error: VUWC‐EBLTE
user brakes too late
VUWCRTA‐TE
RV struck by train ‐ on UWC ‐ RV incorrectly on LC due to RTA
RV struck by train ‐ on UWC ‐ RV incorrectly on LC due to environmental factors: poor VUWC‐EVSTE
crossing visibility
VUWCSUIXPE
RV struck by train ‐ on UWC ‐ RV driver suicide
Passenger train collision with road vehicle on level crossing: OC
VOC‐‐ASSTE
RV struck by train ‐ on OC ‐ RV driver error: fails to stop, look and listen
VOC‐‐DELTH
RV struck by train ‐ on OC ‐ RV driver deliberate action
VOC‐‐ASETE
RV struck by train ‐ on OC ‐ RV driver error: poor sighting
RV struck by train ‐ on OC ‐ RV incorrectly on LC due to environmental factors: sunlight VOC‐‐ESNTE
obscures crossing/view up and down tracks
VOC‐‐ASETH
RV struck by train ‐ on OC ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on OC ‐ RV incorrectly on LC due to environmental factors/driver error: VOC‐‐EBLTE
user brakes too late
VOC‐‐OVSTH
RV struck by train ‐ on OC ‐ train driver error: train overspeeding
RV struck by train ‐ on OC ‐ RV incorrectly on LC due to environmental factors: poor crossing VOC‐‐EVSTE
visibility
VOC‐‐AGDTH
RV struck by train ‐ on OC ‐ RV driver error: grounding
VOC‐‐STRTE
RV struck by train ‐ on OC ‐ RV stranded/failed on LC
VOCRTA‐‐TE
RV struck by train ‐ on OC ‐ RV incorrectly on LC due to RTA
VOC‐‐ATRTH
RV struck by train ‐ on OC ‐ RV driver error: road user turns onto the railway
VOC‐‐ABBTH
RV struck by train ‐ on OC ‐ RV driver error: blocking back
VOC‐‐SUIXPE
RV struck by train ‐ on OC ‐ RV driver suicide
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
7.21E‐10
6.01E‐10
5.91E‐10
4.81E‐10
2.02E‐10
9.37E‐11
4.17E‐11
1.350
0.3521
0.2934
0.2883
0.2347
0.0987
0.0457
0.0203
0.4029
0.1054
0.0878
0.0863
0.0702
0.0295
0.0137
0.0061
13.57%
3.55%
2.96%
2.91%
2.37%
1.00%
0.46%
0.21%
D
D
D
D
D
D
E
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
1.18E‐11
0.0058
0.0017
0.06%
E
‐
Pass trn km
6.66E‐12
0.0033
9.73E‐04
0.03%
E
‐
Pass trn km
5.30E‐12
0.0026
7.74E‐04
0.03%
E
‐
Pass trn km
1.63E‐12
7.97E‐04
2.38E‐04
0.01%
E
‐
Pass trn km
1.12E‐12
5.44E‐04
1.63E‐04
0.01%
E
‐
Pass trn km
6.55E‐12
1.26E‐09
5.26E‐11
1.09E‐11
7.68E‐05
0.0100
0.0095
3.93E‐04
8.18E‐05
0.00%
0.34%
0.32%
0.01%
0.00%
E
Pass trn km
Pass trn km
Pass trn km
0.0032
0.6553
0.6175
0.0257
0.0053
D
D
E
‐
‐
‐
‐
‐
Pass trn km
8.48E‐12
0.0041
6.34E‐05
0.00%
E
‐
Pass trn km
2.49E‐12
0.0012
1.86E‐05
0.00%
E
‐
Pass trn km
2.20E‐12
0.0011
1.65E‐05
0.00%
E
‐
Pass trn km
3.06E‐13
1.50E‐04
2.29E‐06
0.00%
E
‐
Pass trn km
2.45E‐13
1.20E‐04
1.83E‐06
0.00%
E
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
5.55E‐14
5.55E‐14
3.06E‐14
5.89E‐15
2.94E‐15
1.23E‐14
2.71E‐05
2.71E‐05
1.50E‐05
2.87E‐06
1.44E‐06
6.00E‐06
4.15E‐07
4.15E‐07
2.29E‐07
4.40E‐08
2.20E‐08
8.86E‐10
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
41
Table B1
National frequency
Hazardous event code
Precursor code
HET‐10K
HET‐10K
HET‐10K
HET‐10K
HET‐10K
HET‐10K
HET‐10K
HET‐10K
HET‐10K
Passenger train collision with road vehicle on level crossing: FP (includes FP MWL)
VFPC‐ASSTE
RV struck by train ‐ on FP ‐ RV driver error: fails to stop, look and listen
VFPC‐AGDTH
RV struck by train ‐ on FP ‐ RV driver error: grounding
VFPC‐‐DELTH
RV struck by train ‐ on FP ‐ RV driver deliberate action
LFPC‐‐LETF
RV struck by train ‐ on FP ‐ equipment failure: lights fail to operate
VFPC‐EFCTE
RV struck by train ‐ on FP ‐ RV driver error: user fails to observe lights
VFPC‐VANTE
RV struck by train ‐ on FP ‐ RV deliberately placed on level crossing
VFPC‐ASTTH
RV struck by train ‐ on FP ‐ RV driver error: second train coming
VFPC‐SUIXPE
RV struck by train ‐ on FP ‐ RV driver suicide
HET‐11
HET‐11A
HET‐11A
HET‐11A
Non‐passenger train collision with road vehicle on level crossing
Non passenger train collision with road vehicle on level crossing: MCB + CCTV
VCCTVRTATE
RV struck by train ‐ on MCB + CCTV ‐ RV incorrectly on LC due to RTA
VCCTVSPDTH
RV struck by train ‐ on MCB + CCTV ‐ SPAD at signal protecting the LC
RV struck by train ‐ on MCB + CCTV ‐ RV incorrectly on LC due to environmental VCCTVEBLTE
factors/driver error: user brakes too late
VCCTVATRTH
RV struck by train ‐ on MCB + CCTV ‐ RV driver error: road user turns onto the railway
VCCTVMANTH
RV struck by train ‐ on MCB + CCTV ‐ railway staff error in manual control
VCCTVDELTH
RV struck by train ‐ on MCB + CCTV ‐ RV driver deliberate action
LCCTVSKPTH
RV struck by train ‐ on MCB + CCTV ‐ signaller/crossing keeper error
VCCTVASETH
RV struck by train ‐ on MCB + CCTV ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on MCB + CCTV ‐ RV incorrectly on LC due to environmental factors: VCCTVESNTE
sunlight obscures crossing/lights
RV struck by train ‐ on MCB + CCTV ‐ RV incorrectly on LC due to environmental factors: poor VCCTVEVSTE
crossing visibility
Non passenger train collision with road vehicle on level crossing: MCB
RV struck by train ‐ on MCB ‐ RV incorrectly on LC due to environmental factors/driver error: VMCB‐EBLTE
user brakes too late
LMCB‐SKPTH
RV struck by train ‐ on MCB ‐ signaller/crossing keeper error
VMCB‐SPDTH
RV struck by train ‐ on MCB ‐ SPAD at signal protecting the LC
VMCB‐ATRTH
RV struck by train ‐ on MCB ‐ RV driver error: road user turns onto the railway
VMCB‐DELTH
RV struck by train ‐ on MCB ‐ RV driver deliberate action
VMCB‐ASETH
RV struck by train ‐ on MCB ‐ RV driver error: fails to observe level crossing RV struck by train ‐ on MCB ‐ RV incorrectly on LC due to environmental factors: sunlight VMCB‐ESNTE
obscures crossing/lights
VMCBRTA‐TE
RV struck by train ‐ on MCB ‐ RV incorrectly on LC due to RTA
HET‐11A
HET‐11A
HET‐11A
HET‐11A
HET‐11A
HET‐11A
HET‐11A
HET‐11A
HET‐11B
HET‐11B
HET‐11B
HET‐11B
HET‐11B
HET‐11B
HET‐11B
HET‐11B
HET‐11B
Cause precursor description
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
8.19E‐11
5.98E‐11
1.08E‐11
3.69E‐12
3.63E‐12
3.23E‐12
8.36E‐13
3.49E‐13
0.0802
0.0400
0.0292
0.0053
0.0018
0.0018
0.0016
4.08E‐04
1.70E‐04
0.0259
0.0130
0.0095
0.0017
5.84E‐04
5.74E‐04
5.11E‐04
1.32E‐04
3.63E‐06
0.87%
0.44%
0.32%
0.06%
0.02%
0.02%
0.02%
0.00%
0.00%
Non‐pass trn km
Non‐pass trn km
1.42E‐10
6.68E‐11
2.169
0.0292
0.0098
0.0046
0.4663
0.0094
0.0032
0.0015
Non‐pass trn km
4.64E‐11
0.0032
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
3.71E‐11
3.28E‐11
2.97E‐11
2.22E‐11
2.07E‐11
Non‐pass trn km
Non‐pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
E
D
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
100.00%
2.01%
0.68%
0.32%
D
E
‐
‐
‐
‐
0.0010
0.22%
E
‐
0.0026
0.0023
0.0020
0.0015
0.0014
8.21E‐04
7.25E‐04
6.56E‐04
4.90E‐04
4.58E‐04
0.18%
0.16%
0.14%
0.11%
0.10%
E
E
E
E
E
‐
‐
‐
‐
‐
1.76E‐11
0.0012
3.90E‐04
0.08%
E
‐
8.35E‐12
5.76E‐04
1.85E‐04
0.04%
E
‐
0.0494
0.0159
3.40%
‐
Non‐pass trn km
3.00E‐10
0.0207
0.0066
1.42%
D
‐
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
2.85E‐10
3.02E‐11
2.73E‐11
2.27E‐11
1.71E‐11
0.0197
0.0021
0.0019
0.0016
0.0012
0.0063
6.69E‐04
6.03E‐04
5.02E‐04
3.77E‐04
1.35%
0.14%
0.13%
0.11%
0.08%
D
E
E
E
E
‐
‐
‐
‐
‐
Non‐pass trn km
1.45E‐11
0.0010
3.22E‐04
0.07%
E
‐
Non‐pass trn km
1.29E‐11
8.89E‐04
2.85E‐04
0.06%
E
‐
42
Table B1
National frequency
Hazardous event code
HET‐11B
HET‐11C
HET‐11C
HET‐11C
HET‐11C
HET‐11C
HET‐11C
HET‐11C
HET‐11C
HET‐11C
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
HET‐11D
Precursor code
Cause precursor description
RV struck by train ‐ on MCB ‐ RV incorrectly on LC due to environmental factors: poor crossing visibility
Non passenger train collision with road vehicle on level crossing: MCG
LMCG‐SKPTH
RV struck by train ‐ on MCG ‐ signaller/crossing keeper error
VMCG‐DELTH
RV struck by train ‐ on MCG ‐ RV driver deliberate action
RV struck by train ‐ on MCG ‐ RV incorrectly on LC due to environmental factors/driver error: VMCG‐EBLTE
user brakes too late
VMCG‐ASETH
RV struck by train ‐ on MCG ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on MCG ‐ RV incorrectly on LC due to environmental factors: sunlight VMCG‐ESNTE
obscures crossing/lights
VMCG‐SPDTH
RV struck by train ‐ on MCG ‐ SPAD at signal protecting the LC
RV struck by train ‐ on MCG ‐ RV incorrectly on LC due to environmental factors: poor VMCG‐EVSTE
crossing visibility
VMCGRTA‐TE
RV struck by train ‐ on MCG ‐ RV incorrectly on LC due to RTA
Non passenger train collision with road vehicle on level crossing: ABCL
VABCLASETH
RV struck by train ‐ on ABCL ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on ABCL ‐ RV incorrectly on LC due to environmental factors: sunlight VABCLESNTE
obscures crossing/lights
RV struck by train ‐ on ABCL ‐ RV incorrectly on LC due to environment factors/driver error: VABCLEBLTE
user brakes too late VABCLDRRTH
RV struck by train ‐ on ABCL ‐ train driver error
VABCLSTRTE
RV struck by train ‐ on ABCL ‐ RV stranded/failed on LC
VABCLAGDTH
RV struck by train ‐ on ABCL ‐ RV driver error: grounding
VABCLVANTE
RV struck by train ‐ on ABCL ‐ RV deliberately placed on level crossing
PABCLOVSTH
RV struck by train ‐ on ABCL ‐ train overspeeding
VABCLDELTH
RV struck by train ‐ on ABCL ‐ RV driver deliberate action: ignores lights
LABCLBLETF
RV struck by train ‐ on ABCL ‐ equipment failure: lights/barriers fail to operate
VABCLASTTH
RV struck by train ‐ on ABCL ‐ RV driver error: second train coming
RV struck by train ‐ on ABCL ‐ RV incorrectly on LC due to environmental factors: poor VABCLEVSTE
crossing visibility
VABCLABBTH
RV struck by train ‐ on ABCL ‐ RV driver error: blocking back
VABCLRTATE
RV struck by train ‐ on ABCL ‐ RV incorrectly on LC due to RTA
VABCLMANTH
RV struck by train ‐ on ABCL ‐ railway staff error in manual control
LABCLDETTF
RV struck by train ‐ on ABCL ‐ equipment failure: failure to detect approaching train
VABCLATRTH
RV struck by train ‐ on ABCL ‐ RV driver error: road user turns onto the railway
PABCLSPDTH
RV struck by train ‐ on ABCL ‐ SPAD at stop sign protecting the LC
VMCB‐EVSTE
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Non‐pass trn km
6.85E‐12
4.72E‐04
1.52E‐04
0.03%
E
‐
Non‐pass trn km
Non‐pass trn km
1.20E‐10
6.81E‐11
0.0175
0.0082
0.0047
0.0056
0.0026
0.0015
1.20%
0.57%
0.32%
D
D
‐
‐
‐
Non‐pass trn km
2.83E‐11
0.0020
6.26E‐04
0.13%
E
‐
Non‐pass trn km
1.33E‐11
9.20E‐04
2.95E‐04
0.06%
E
‐
Non‐pass trn km
1.15E‐11
7.91E‐04
2.53E‐04
0.05%
E
‐
Non‐pass trn km
5.41E‐12
3.73E‐04
1.19E‐04
0.03%
E
‐
Non‐pass trn km
5.16E‐12
3.56E‐04
1.14E‐04
0.02%
E
‐
Non‐pass trn km
2.31E‐12
1.87E‐10
5.09E‐05
0.0092
0.0017
0.01%
1.97%
0.37%
E
Non‐pass trn km
1.59E‐04
0.0696
0.0129
D
‐
‐
‐
Non‐pass trn km
1.83E‐10
0.0126
0.0017
0.36%
D
‐
Non‐pass trn km
1.72E‐10
0.0119
0.0016
0.34%
D
‐
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.11E‐10
7.69E‐11
7.69E‐11
5.62E‐11
4.25E‐11
3.12E‐11
2.72E‐11
1.17E‐11
0.0076
0.0053
0.0053
0.0039
0.0029
0.0022
0.0019
8.08E‐04
0.0010
7.12E‐04
7.12E‐04
5.20E‐04
3.93E‐04
2.89E‐04
2.52E‐04
1.08E‐04
0.22%
0.15%
0.15%
0.11%
0.08%
0.06%
0.05%
0.02%
E
E
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
Non‐pass trn km
7.25E‐12
5.00E‐04
6.71E‐05
0.01%
E
‐
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.08E‐12
2.72E‐12
1.09E‐12
9.40E‐13
8.03E‐13
2.22E‐13
2.82E‐04
1.88E‐04
7.51E‐05
6.48E‐05
5.53E‐05
1.53E‐05
3.78E‐05
2.52E‐05
1.01E‐05
8.71E‐06
7.43E‐06
2.05E‐06
0.01%
0.01%
0.00%
0.00%
0.00%
0.00%
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
43
Table B1
National frequency
Hazardous event code
HET‐11D
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11E
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
Precursor code
Cause precursor description
VABCLSUIXPE
RV struck by train ‐ on ABCL ‐ RV driver suicide
Non passenger train collision with road vehicle on level crossing: AHB
VAHB‐DELTH
RV struck by train ‐ on AHB ‐ RV driver deliberate action: zigzags barriers
RV struck by train ‐ on AHB ‐ RV incorrectly on LC due to environmental factors/driver error: VAHB‐EBLTE
user brakes too late
VAHB‐STRTE
RV struck by train ‐ on AHB ‐ RV stranded/failed on LC
VAHB‐ASETH
RV struck by train ‐ on AHB ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on AHB ‐ RV incorrectly on LC due to environmental factors: sunlight VAHB‐ESNTE
obscures crossing/lights
VAHB‐ABBTH
RV struck by train ‐ on AHB ‐ RV driver error: blocking back
VAHB‐VANTE
RV struck by train ‐ on AHB ‐ RV deliberately placed on level crossing
VAHBRTA‐TE
RV struck by train ‐ on AHB ‐ RV incorrectly on LC due to RTA
VAHB‐ATRTH
RV struck by train ‐ on AHB ‐ RV driver error: road user turns onto the railway
VAHB‐AGDTH
RV struck by train ‐ on AHB ‐ RV driver error: grounding
VAHB‐MANTH
RV struck by train ‐ on AHB ‐ railway staff error in manual control
LAHB‐DETTF
RV struck by train ‐ on AHB ‐ equipment failure: failure to detect approaching train
PAHB‐OVSTH
RV struck by train ‐ on AHB ‐ train driver error: train overspeeding
LAHB‐BLETF
RV struck by train ‐ on AHB ‐ equipment failure: lights/barriers fail to operate
VAHB‐ASTTH
RV struck by train ‐ on AHB ‐ RV driver error: second train coming
VAHBSUIXPE
RV struck by train ‐ on AHB ‐ RV driver suicide
RV struck by train ‐ on AHB ‐ RV incorrectly on LC due to environmental factors: poor VAHB‐EVSTE
crossing visibility
Non passenger train collision with road vehicle on level crossing: AOCL
VAOCLDELTH
RV struck by train ‐ on AOCL ‐ RV driver deliberate action: ignores lights / red light running
VAOCLASETH
RV struck by train ‐ on AOCL ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on AOCL ‐ RV incorrectly on LC due to environmental factors: sunlight VAOCLESNTE
obscures crossing/lights
RV struck by train ‐ on AOCL ‐ RV incorrectly on LC due to environmental factors/driver VAOCLEBLTE
error: user brakes too late LAOCLLSETF
RV struck by train ‐ on AOCL ‐ AOCL lights fail to operate
VAOCLVANTE
RV struck by train ‐ on AOCL ‐ road vehicle deliberately placed on level crossing
RV struck by train ‐ on AOCL ‐ RV incorrectly on LC due to environmental factors: poor VAOCLEVSTE
crossing visibility
VAOCLASTTH
RV struck by train ‐ on AOCL ‐ RV driver error: second train coming
VAOCLDRRTH
RV struck by train ‐ on AOCL ‐ train driver error
VAOCLAGDTH
RV struck by train ‐ on AOCL ‐ RV driver error: grounding/stuck
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Non‐pass trn km
1.70E‐11
Non‐pass trn km
1.48E‐09
0.0012
0.5593
0.1019
7.61E‐07
0.1391
0.0327
0.00%
29.83%
7.01%
D
‐
‐
‐
Non‐pass trn km
1.05E‐09
0.0727
0.0233
5.00%
D
‐
Non‐pass trn km
Non‐pass trn km
8.89E‐10
6.09E‐10
0.0613
0.0420
0.0197
0.0135
4.22%
2.89%
D
D
‐
‐
Non‐pass trn km
4.60E‐10
0.0317
0.0102
2.18%
D
‐
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
4.39E‐10
3.67E‐10
2.93E‐10
2.31E‐10
1.48E‐10
1.17E‐10
1.01E‐10
4.57E‐11
2.63E‐11
1.34E‐11
1.83E‐09
0.0303
0.0253
0.0202
0.0159
0.0102
0.0081
0.0070
0.0031
0.0018
9.27E‐04
0.1263
0.0097
0.0081
0.0065
0.0051
0.0033
0.0026
0.0022
0.0010
5.82E‐04
2.97E‐04
1.79E‐04
2.08%
1.74%
1.39%
1.10%
0.70%
0.56%
0.48%
0.22%
0.12%
0.06%
0.04%
D
D
D
D
D
D
E
E
E
E
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Non‐pass trn km
7.57E‐12
5.22E‐04
1.67E‐04
0.04%
E
‐
Non‐pass trn km
Non‐pass trn km
3.33E‐09
1.16E‐09
0.4762
0.2294
0.0799
0.0639
0.0308
0.0107
13.70%
6.61%
2.30%
D
D
‐
‐
‐
Non‐pass trn km
8.61E‐10
0.0594
0.0080
1.71%
D
‐
Non‐pass trn km
7.73E‐10
0.0533
0.0072
1.54%
D
‐
Non‐pass trn km
Non‐pass trn km
2.73E‐10
1.23E‐10
0.0188
0.0085
0.0025
0.0011
0.54%
0.25%
D
D
‐
‐
Non‐pass trn km
1.14E‐10
0.0078
0.0011
0.23%
D
‐
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.05E‐10
5.74E‐11
3.95E‐11
0.0072
0.0040
0.0027
9.72E‐04
5.32E‐04
3.66E‐04
0.21%
0.11%
0.08%
D
D
E
‐
‐
‐
E
44
Table B1
National frequency
Hazardous event code
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11F
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11G
HET‐11H
HET‐11H
HET‐11H
HET‐11H
HET‐11H
HET‐11H
HET‐11H
HET‐11H
HET‐11H
Precursor code
Cause precursor description
VAOCLSTRTE
RV struck by train ‐ on AOCL ‐ RV stranded/failed on LC
PAOCLOVSTH
RV struck by train ‐ on AOCL ‐ train overspeeding
VAOCLABBTH
RV struck by train ‐ on AOCL ‐ RV driver error: blocking back
VAOCLRTATE
RV struck by train ‐ on AOCL ‐ RV incorrectly on LC due to RTA
LAOCLDETTF
RV struck by train ‐ on AOCL ‐ equipment failure: failure to detect approaching train
VAOCLATRTH
RV struck by train ‐ on AOCL ‐ RV driver error: road user turns onto the railway PAOCLSPDTH
RV struck by train ‐ on AOCL ‐ SPAD at stop board protecting the LC
VAOCLSUIXPE
RV struck by train ‐ on AOCL ‐ RV driver suicide
Non passenger train collision with road vehicle on level crossing: UWC + MWL
VUWCMEFCTE
RV struck by train ‐ on UWC + MWL ‐ RV driver error: user fails to observe lights
VUWCMAMITE
RV struck by train ‐ on UWC + MWL ‐ RV driver error: misuse due to gates left open
RV struck by train ‐ on UWC + MWL ‐ RV incorrectly on LC due to environmental factors: VUWCMESNTE
sunlight obscures crossing/lights
VUWCMDELTH
RV struck by train ‐ on UWC + MWL ‐ RV driver deliberate action
VUWCMAGDTH RV struck by train ‐ on UWC + MWL ‐ RV driver error: grounding
LUWCM‐LETF
RV struck by train ‐ on UWC + MWL ‐ equipment failure: lights fail to operate
VUWCMSTRTE
RV struck by train ‐ on UWC + MWL ‐ RV stranded/failed on LC
VUWCMVANTE
RV struck by train ‐ on UWC + MWL ‐ RV deliberately placed on level crossing
VUWCMASTTH
RV struck by train ‐ on UWC + MWL ‐ RV driver error: second train coming
RV struck by train ‐ on UWC + MWL ‐ RV incorrectly on LC due to environmental factors: VUWCMEBLTE
user brakes too late
VUWCMRTATE
RV struck by train ‐ on UWC + MWL ‐ RV incorrectly on LC due to RTA
RV struck by train ‐ on UWC + MWL ‐ RV incorrectly on LC due to environmental factors: VUWCMEVSTE
poor crossing visibility
LUWCMDETTF
RV struck by train ‐ on UWC + MWL ‐ equipment failure: failure to detect approaching train
VUWCLSUIXPE
RV struck by train ‐ on UWC + MWL ‐ RV driver suicide
Non passenger train collision with road vehicle on level crossing: UWC + T
RV struck by train ‐ on UWC + T ‐ RV driver error: road user fails to use phone to check line is VUWCTEFCTE
clear
VUWCTSKPTH
RV struck by train ‐ on UWC + T ‐ signaller/crossing keeper error
VUWCTAMITE
RV struck by train ‐ on UWC + T ‐ RV driver error: misuse due to gates left open
VUWCT‐DELTH
RV struck by train ‐ on UWC + T ‐ RV driver deliberate action
VUWCTVANTE
RV struck by train ‐ on UWC + T ‐ RV deliberately placed on level crossing
VUWCTAGDTH
RV struck by train ‐ on UWC + T ‐ RV driver error: grounding
VUWCT‐STRTE
RV struck by train ‐ on UWC + T ‐ RV stranded/failed on LC VUWCTASTTH
RV struck by train ‐ on UWC + T ‐ RV driver error: second train coming
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
3.95E‐11
2.18E‐11
2.10E‐12
1.40E‐12
4.83E‐13
4.16E‐13
1.14E‐13
8.76E‐12
Non‐pass trn km
Non‐pass trn km
9.87E‐10
3.30E‐10
0.0027
0.0015
1.45E‐04
9.65E‐05
3.33E‐05
2.87E‐05
7.87E‐06
6.04E‐04
0.1340
0.0680
0.0228
3.66E‐04
2.02E‐04
1.94E‐05
1.30E‐05
4.47E‐06
3.85E‐06
1.06E‐06
3.80E‐07
0.0365
0.0186
0.0062
0.08%
0.04%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
7.83%
3.98%
1.33%
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Non‐pass trn km
2.03E‐10
0.0140
0.0038
0.82%
D
‐
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
1.44E‐10
1.10E‐10
9.78E‐11
3.01E‐11
2.47E‐11
5.49E‐12
0.0100
0.0076
0.0067
0.0021
0.0017
3.79E‐04
0.0027
0.0021
0.0018
5.67E‐04
4.64E‐04
1.03E‐04
0.58%
0.44%
0.39%
0.12%
0.10%
0.02%
E
D
D
E
E
E
‐
‐
‐
‐
‐
‐
Non‐pass trn km
3.92E‐12
2.70E‐04
7.38E‐05
0.02%
E
‐
Non‐pass trn km
1.17E‐12
8.05E‐05
2.20E‐05
0.00%
E
‐
Non‐pass trn km
8.30E‐13
5.72E‐05
1.56E‐05
0.00%
E
‐
Non‐pass trn km
Non‐pass trn km
2.58E‐13
4.68E‐12
1.78E‐05
3.23E‐04
0.3680
4.86E‐06
6.28E‐07
0.1003
0.00%
0.00%
21.50%
E
E
‐
‐
‐
Non‐pass trn km
3.01E‐09
0.2074
0.0566
12.15%
D
‐
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
7.94E‐10
6.92E‐10
3.31E‐10
2.39E‐10
1.73E‐10
6.56E‐11
1.01E‐11
0.0547
0.0477
0.0228
0.0165
0.0119
0.0045
6.93E‐04
0.0149
0.0130
0.0062
0.0045
0.0033
0.0012
1.89E‐04
3.21%
2.79%
1.34%
0.97%
0.70%
0.26%
0.04%
D
D
D
D
D
D
E
‐
‐
‐
‐
‐
‐
‐
E
E
E
E
E
E
E
E
45
Table B1
National frequency
Hazardous event code
HET‐11H
HET‐11H
HET‐11H
HET‐11H
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11I
HET‐11J
HET‐11J
HET‐11J
HET‐11J
HET‐11J
HET‐11J
HET‐11J
HET‐11J
HET‐11J
HET‐11J
Precursor code
Cause precursor description
RV struck by train ‐ on UWC + T ‐ RV incorrectly on LC due to environmental factors/driver error: user brakes too late
VUWCTRTA‐TE
RV struck by train ‐ on UWC + T ‐ RV incorrectly on LC due to RTA
RV struck by train ‐ on UWC + T ‐ RV incorrectly on LC due to environmental factors: poor VUWCTEVSTE
crossing visibility
VUWCTSUIXPE
RV struck by train ‐ on UWC + T ‐ RV driver suicide
Non passenger train collision with road vehicle on level crossing: UWC
VUWC‐ASSTE
RV struck by train ‐ on UWC ‐ RV driver error: fails to stop, look and listen
VUWC‐AGDTH
RV struck by train ‐ on UWC ‐ RV driver error: grounding VUWC‐ASETE
RV struck by train ‐ on UWC ‐ RV driver error: poor sighting
VUWC‐AMITE
RV struck by train ‐ on UWC ‐ RV driver error: misuse due to gates left open
VUWC‐DELTH
RV struck by train ‐ on UWC ‐ RV driver deliberate action
VUWC‐VANTE
RV struck by train ‐ on UWC ‐ RV deliberately placed on level crossing
VUWC‐STRTE
RV struck by train ‐ on UWC ‐ RV stranded/failed on LC
RV struck by train ‐ on UWC ‐ RV incorrectly on LC due to environmental factors: sunlight VUWC‐ESNTE
obscures crossing/view up and down tracks
VUWC‐ASTTH
RV struck by train ‐ on UWC ‐ RV driver error: second train coming
RV struck by train ‐ on UWC ‐ RV incorrectly on LC due to environmental factors/driver error: VUWC‐EBLTE
user brakes too late
VUWCRTA‐TE
RV struck by train ‐ on UWC ‐ RV incorrectly on LC due to RTA
RV struck by train ‐ on UWC ‐ RV incorrectly on LC due to environmental factors: poor VUWC‐EVSTE
crossing visibility
VUWCSUIXPE
RV struck by train ‐ on UWC ‐ RV driver suicide
Non passenger train collision with road vehicle on level crossing: OC
VOC‐‐ASSTE
RV struck by train ‐ on OC ‐ RV driver error: fails to stop, look and listen
VOC‐‐DELTH
RV struck by train ‐ on OC ‐ RV driver deliberate action
VOC‐‐ASETE
RV struck by train ‐ on OC ‐ RV driver error: poor sighting
RV struck by train ‐ on OC ‐ RV incorrectly on LC due to environmental factors: sunlight VOC‐‐ESNTE
obscures crossing/view up and down tracks
VOC‐‐ASETH
RV struck by train ‐ on OC ‐ RV driver error: fails to observe level crossing
RV struck by train ‐ on OC ‐ RV incorrectly on LC due to environmental factors/driver error: VOC‐‐EBLTE
user brakes too late
VOC‐‐OVSTH
RV struck by train ‐ on OC ‐ train overspeeding
RV struck by train ‐ on OC ‐ RV incorrectly on LC due to environmental factors: poor crossing VOC‐‐EVSTE
visibility
VOC‐‐STRTE
RV struck by train ‐ on OC ‐ RV stranded/failed on LC
VUWCTEBLTE
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Non‐pass trn km
8.50E‐12
5.86E‐04
1.60E‐04
0.03%
E
‐
Non‐pass trn km
2.67E‐12
1.84E‐04
5.03E‐05
0.01%
E
‐
Non‐pass trn km
1.78E‐12
1.23E‐04
3.36E‐05
0.01%
E
‐
Non‐pass trn km
1.07E‐11
8.47E‐10
7.06E‐10
6.94E‐10
5.65E‐10
2.38E‐10
1.10E‐10
4.90E‐11
1.43E‐06
0.0610
0.0160
0.0133
0.0131
0.0106
0.0045
0.0021
9.22E‐04
0.00%
13.08%
3.42%
2.85%
2.80%
2.28%
0.96%
0.44%
0.20%
E
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
7.39E‐04
0.2239
0.0584
0.0487
0.0478
0.0389
0.0164
0.0076
0.0034
D
D
D
D
D
D
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
Non‐pass trn km
1.39E‐11
9.55E‐04
2.61E‐04
0.06%
E
‐
Non‐pass trn km
7.82E‐12
5.39E‐04
1.47E‐04
0.03%
E
‐
Non‐pass trn km
6.22E‐12
4.29E‐04
1.17E‐04
0.03%
E
‐
Non‐pass trn km
1.92E‐12
1.32E‐04
3.61E‐05
0.01%
E
‐
Non‐pass trn km
1.31E‐12
9.03E‐05
2.47E‐05
0.01%
E
‐
Non‐pass trn km
7.69E‐12
1.49E‐09
6.18E‐11
1.28E‐11
1.03E‐06
0.0016
0.0015
6.39E‐05
1.33E‐05
0.00%
0.35%
0.33%
0.01%
0.00%
E
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
5.30E‐04
0.1087
0.1025
0.0043
8.86E‐04
D
D
E
‐
‐
‐
‐
‐
Non‐pass trn km
9.97E‐12
6.87E‐04
1.03E‐05
0.00%
E
‐
Non‐pass trn km
2.92E‐12
2.01E‐04
3.02E‐06
0.00%
E
‐
Non‐pass trn km
2.59E‐12
1.79E‐04
2.68E‐06
0.00%
E
‐
Non‐pass trn km
3.60E‐13
2.48E‐05
3.72E‐07
0.00%
E
‐
Non‐pass trn km
2.88E‐13
1.99E‐05
2.98E‐07
0.00%
E
‐
Non‐pass trn km
6.52E‐14
4.49E‐06
6.74E‐08
0.00%
E
‐
46
Table B1
National frequency
Hazardous event code
HET‐11J
HET‐11J
HET‐11J
HET‐11J
HET‐11J
HET‐11K
HET‐11K
HET‐11K
HET‐11K
HET‐11K
HET‐11K
HET‐11K
HET‐11K
HET‐11K
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
HET‐11 POS
Precursor code
Cause precursor description
VOC‐‐AGDTH
RV struck by train ‐ on OC ‐ RV driver error: grounding
VOCRTA‐‐TE
RV struck by train ‐ on OC ‐ RV incorrectly on LC due to RTA
VOC‐‐ATRTH
RV struck by train ‐ on OC ‐ RV driver error: road user turns onto the railway
VOC‐‐ABBTH
RV struck by train ‐ on OC ‐ RV driver error: blocking back
VOC‐‐SUIXPE
RV struck by train ‐ on OC ‐ RV driver suicide
Non passenger train collision with road vehicle on level crossing: FP (includes FP MWL)
VFPC‐ASSTE
RV struck by train ‐ on FP ‐ RV driver error: fails to stop, look and listen
VFPC‐AGDTH
RV struck by train ‐ on FP ‐ RV driver error: grounding
VFPC‐‐DELTH
RV struck by train ‐ on FP ‐ RV driver deliberate action
LFPC‐‐LETF
RV struck by train ‐ on FP ‐ equipment failure: lights fail to operate
VFPC‐EFCTE
RV struck by train ‐ on FP ‐ RV driver error: user fails to observe lights
VFPC‐VANTE
RV struck by train ‐ on FP ‐ RV deliberately placed on level crossing
VFPC‐ASTTH
RV struck by train ‐ on FP ‐ RV driver error: second train coming
VFPC‐SUIXPE
RV struck by train ‐ on FP ‐ RV driver suicide
OTP collision with road vehicle on level crossing inside possession
OT04I05POS
Crossing User Error ‐ RV struck by OTP on level crossings inside possession
Unsafe System of Work Employed by Workers ‐ RV struck by OTP on level crossings inside OT04I54POS
possession
OTP Driver/Operator Error (Inattention) ‐ RV struck by OTP on level crossings inside OT04I12POS
possession
OT04I15POS
OTP Driver/Operator Error (Speeding) ‐ RV struck by OTP on level crossings inside possession
OT04I11POS
OTP Driver/Operator Error (Braking) ‐ RV struck by OTP on level crossings inside possession
OT04I32POS
Infrastructure Defect ‐ RV struck by OTP on level crossings inside possession
OT04I59POS
Defect on OTP ‐ RV struck by OTP on level crossings inside possession
OT04I17POS
Handsignaller Error ‐ RV struck by OTP on level crossings inside possession
OTP Driver/Operator Error (Signal Passed at Danger) ‐ RV struck by OTP on level crossings OT04I14POS
inside possession
Incorrect Management of IC Interface ‐ RV struck by OTP on level crossings inside OT04I31POS
possession
OT04I46POS
Possession Irregularity ‐ RV struck by OTP on level crossings inside possession
OT04I50POS
Signaller Error ‐ RV struck by OTP on level crossings inside possession
OTP Driver/Operator Error (Propelling) ‐ RV struck by OTP on level crossings inside OT04I13POS
possession
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
6.52E‐14
3.60E‐14
6.92E‐15
3.46E‐15
1.44E‐14
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
Non‐pass trn km
9.62E‐11
7.03E‐11
1.26E‐11
4.34E‐12
4.27E‐12
3.80E‐12
9.82E‐13
4.10E‐13
OTP hrs
4.22E‐08
4.49E‐06
2.48E‐06
4.77E‐07
2.39E‐07
9.95E‐07
0.0133
0.0066
0.0048
8.72E‐04
2.99E‐04
2.94E‐04
2.62E‐04
6.77E‐05
2.82E‐05
0.1198
0.0898
6.74E‐08
3.72E‐08
7.15E‐09
3.58E‐09
6.00E‐11
0.0043
0.0022
0.0016
2.85E‐04
9.76E‐05
9.60E‐05
8.55E‐05
2.21E‐05
2.94E‐08
0.0196
0.0147
0.00%
0.00%
0.00%
0.00%
0.00%
0.93%
0.46%
0.34%
0.06%
0.02%
0.02%
0.02%
0.00%
0.00%
4.19%
3.15%
OTP hrs
8.44E‐09
0.0180
0.0029
OTP hrs
1.12E‐09
0.0024
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
5.62E‐10
5.62E‐10
5.62E‐10
5.62E‐10
5.62E‐10
OTP hrs
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
0.63%
E
‐
3.91E‐04
0.08%
E
‐
0.0012
0.0012
0.0012
0.0012
0.0012
1.96E‐04
1.96E‐04
1.96E‐04
1.96E‐04
1.96E‐04
0.04%
0.04%
0.04%
0.04%
0.04%
E
E
E
E
E
‐
‐
‐
‐
‐
5.62E‐10
0.0012
1.96E‐04
0.04%
E
‐
OTP hrs
2.81E‐10
5.99E‐04
9.78E‐05
0.02%
E
‐
OTP hrs
OTP hrs
2.81E‐10
2.81E‐10
5.99E‐04
5.99E‐04
9.78E‐05
9.78E‐05
0.02%
0.02%
E
E
‐
‐
OTP hrs
2.81E‐10
5.99E‐04
9.78E‐05
0.02%
E
‐
E
D
E
E
E
E
E
E
47
Table B1
National frequency
Hazardous event code
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
Precursor code
Cause precursor description
Derailment of passenger train
RLNS‐‐‐‐UF
Running into landslip leading to PT derailment ‐ from cutting
VBND‐‐‐‐UE
Running into vehicle through boundary fence leading to PT derailment
XSGM‐‐‐‐PH
Signaller/ crossing keeper error leading to PT derailment
XDSC‐‐‐‐PF
Defective S&C leading to PT derailment
PSPD‐‐‐‐PH
SPAD at S&C leading to PT derailment
TBCK‐‐‐‐PF
Track buckle leading to PT derailment
BTRE‐‐‐‐UE
Running into tree leading to PT derailment
PCRW‐‐‐‐PH
Other driver/train crew error at S&C leading to PT derailment
DEEQ‐‐‐‐UF
Equipment detached from same train leads to PT derailment
XPRD‐‐‐‐PH
Track maintenance staff error leading to PT derailment
RBSHCOL‐UE
Rail bridge collapse ‐ bridge bashing leading to PT derailment
PWHL‐‐‐‐PF
Wheel failure leading to PT derailment
RBGS‐‐‐‐UF
Rail bridge structural failure leading to PT derailment
XPOS‐‐‐‐PF
Points in the wrong position and not detected leading to PT derailment
TTWS‐‐‐‐PF
Track twist leading to PT derailment
TSPG‐‐‐‐PF
Gauge spread (assumed always slow speed) leading to PT derailment
XSCO‐‐‐‐PH
Incorrect scotch and clip of points leading to PT derailment
TFSH‐‐‐‐PF
Broken fishplate leading to PT derailment
AANM‐‐‐‐UE
Running into large animals leading to PT derailment
BVAN‐‐‐‐UE
Running into item placed on the track by vandals leading to PT derailment
RSLP‐‐‐‐PF
Subsidence/ landslip under track leading to PT derailment – on embankment
WSNO‐‐‐‐UE
Running into snow/ice leading to PT derailment
SWRG‐‐‐‐PF
Wrongside signal failure at S&C leading to PT derailment
TBKR‐‐‐‐PF
Broken rail leading to PT derailment
VBGV‐‐‐‐UE
Running into vehicle fallen from overbridge leading to PT derailment
PAXB‐‐‐‐PF
Seized axle box bearing leading to PT derailment
PAXL‐‐‐‐PF
Axle failure leading to PT derailment
XSCM‐‐‐‐PF
Movement of points under train (equipment faults) leading to PT derailment
Structural collapse due to scour and water action leading to PT derailment (includes sea RSCR‐‐‐‐UE
walls)
BFLL‐‐‐‐UE
Running into item that has fallen onto the line leading to PT derailment
MMAT‐‐‐‐UE
Running into engineering material/equipment left foul leading to train derailment
POSL‐‐‐‐PH
Overspeeding leading to PT derailment
PSHN‐‐‐‐PH
Shunter error leading to PT derailment
PTRA‐‐‐‐PF
Running into object fallen from preceding train leading to PT derailment
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
2.24E‐09
6.07E‐10
1.28E‐09
1.28E‐09
7.68E‐10
7.33E‐10
6.07E‐10
5.67E‐10
4.49E‐10
3.78E‐10
1.48E‐11
2.83E‐10
1.20E‐11
2.56E‐10
2.44E‐10
7.68E‐10
2.44E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
8.67E‐11
1.89E‐10
1.89E‐10
1.89E‐10
7.086
1.095
0.2963
0.6250
0.6250
0.3750
0.3581
0.2963
0.2768
0.2191
0.1845
0.0072
0.1384
0.0058
0.1250
0.1194
0.3750
0.1194
0.1095
0.1095
0.1095
0.1095
0.1095
0.1095
0.1095
0.0423
0.0923
0.0923
0.0923
1.955
0.2773
0.1785
0.1582
0.1582
0.0949
0.0907
0.0750
0.0701
0.0564
0.0467
0.0429
0.0357
0.0346
0.0316
0.0308
0.0304
0.0302
0.0282
0.0277
0.0277
0.0277
0.0277
0.0277
0.0277
0.0255
0.0238
0.0238
0.0234
100.00%
14.19%
9.13%
8.09%
8.09%
4.86%
4.64%
3.84%
3.58%
2.89%
2.39%
2.19%
1.82%
1.77%
1.62%
1.57%
1.56%
1.55%
1.44%
1.42%
1.42%
1.42%
1.42%
1.42%
1.42%
1.30%
1.22%
1.22%
1.19%
D
D
D
D
D
D
D
D
D
D
E
D
E
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
7.41E‐12
0.0036
0.0214
1.10%
E
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.73E‐10
1.73E‐10
6.70E‐11
9.90E‐11
9.45E‐11
0.0847
0.0847
0.0327
0.0483
0.0461
0.0214
0.0214
0.0159
0.0122
0.0119
1.10%
1.10%
0.81%
0.63%
0.61%
D
D
D
D
D
‐
‐
‐
‐
‐
48
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
Normaliser
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
PWHF‐‐‐‐PF
PBUF‐‐‐‐PF
YMSC‐‐‐‐PE
PSUS‐‐‐‐PF
UTRN‐‐‐‐UE
BBLN‐‐‐‐UE
RBGD‐‐‐‐UF
RWAL‐‐‐‐UF
RDRN‐‐‐‐UF
RBSH‐‐‐‐UE
TTUNBKR‐PF
TTKD‐‐‐‐UE
RTUNWALLUF
BBLD‐‐‐‐UE
WWIN‐‐‐‐UE
HET‐12
RBLD‐‐‐‐UF
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
HET‐12
RSIG‐‐‐‐UF
VMVE‐‐‐‐UE
PCATDR‐‐PH
ROHL‐‐‐‐UF
RQAK‐‐‐‐UE
WFLD‐‐‐‐UE
Wheel flats or wheel/tyre wear beyond limits leading to PT derailment
Buffer locking leading to PT derailment
Miscellaneous/ unknown causes on plain line leading to PT derailment
Suspension system/bogie failure leading to PT derailment
Running into train derailed while in depot/siding leading to PT derailment
Running into items blown onto the line leading to PT derailment
Running into to debris from overbridge leading to PT derailment
Running into debris from retaining wall leading to PT derailment
Drainage culvert/pipework collapse leading to PT derailment
Bridge bashing leading to bridge displacement (not collapse) and PT derailment
Broken rail in tunnel leading to PT derailment
Track damage from other undetected derailment leading to PT derailment
Running into debris in the tunnel leading to PT derailment
Running into objects from building site leading to PT derailment
High winds leading to PT derailment
Running into debris from lineside structure/building, including used and unused station and platform leading to PT derailment.
Running into debris from signalling gantry leading to PT derailment
Running into maintenance vehicle leading to PT derailment
Runaway leading to PT derailment
Running into debris from OHLE structure leading to PT derailment
Structural damage due to earthquake leading to PT derailment
Running into flooding leading to PT derailment
HET‐13
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
Derailment of non‐passenger train
Derailment of freight train on passenger line outside possession
XSGM‐‐‐‐FH
Signaller/crossing keeper error leading to FT derailment on pass. line
FSPD‐‐‐‐FH
Signal passed at danger at S&C leading to FT derailment on pass. line
FMSC‐‐‐‐FF
Miscellaneous mechanical fault leading to FT derailment on pass. line
FCRW‐‐‐‐FH
Other driver/train crew error at S&C leading to FT derailment on pass. line
FCATDR‐‐FH
Runaway leading to FT derailment on pass. line
XMISC‐‐‐FF
Miscellaneous/unknown cause on S&C leading to FT derailment on pass. line
YMSC‐‐‐‐FE
Miscellaneous/unknown cause on plain line leading to FT derailment on pass. line
XDSC‐‐‐‐FF
Defective S&C leading to FT derailment on pass. line
FSUS‐‐‐‐FF
Suspension system/bogie failure leading to FT derailment on pass. line
VBND‐‐‐‐UE
Running into vehicle through boundary fence leading to FT derailment on pass. line
Version 7.1 — August 2011
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
9.45E‐11
9.45E‐11
9.45E‐11
9.45E‐11
8.97E‐11
8.67E‐11
6.54E‐11
4.45E‐11
4.45E‐11
4.28E‐11
2.19E‐11
3.59E‐11
1.59E‐11
1.79E‐11
1.79E‐11
0.0461
0.0461
0.0461
0.0461
0.0438
0.0423
0.0319
0.0217
0.0217
0.0209
0.0107
0.0175
0.0078
0.0088
0.0088
0.0119
0.0119
0.0119
0.0119
0.0111
0.0107
0.0081
0.0055
0.0055
0.0053
0.0052
0.0045
0.0038
0.0022
0.0022
0.61%
0.61%
0.61%
0.61%
0.57%
0.55%
0.41%
0.28%
0.28%
0.27%
0.27%
0.23%
0.19%
0.11%
0.11%
D
D
D
D
E
D
E
E
E
E
D
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
1.24E‐11
0.0060
0.0015
0.08%
E
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Pass trn km
1.01E‐11
8.97E‐12
4.10E‐11
6.18E‐12
1.79E‐13
8.97E‐14
0.0049
0.0044
0.0200
0.0030
8.76E‐05
4.38E‐05
0.0012
0.0011
9.60E‐04
7.64E‐04
2.26E‐05
1.13E‐05
0.06%
0.06%
0.05%
0.04%
0.00%
0.00%
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
2.62E‐08
2.33E‐08
2.18E‐08
1.91E‐08
1.46E‐08
1.17E‐08
1.09E‐08
8.75E‐09
8.18E‐09
6.07E‐10
58.45
10.12
1.125
1.0000
0.9352
0.8183
0.6250
0.5000
0.4676
0.3750
0.3507
0.0260
0.5536
0.2786
0.0288
0.0256
0.0244
0.0209
0.0152
0.0128
0.0122
0.0096
0.0091
0.0090
100.00%
50.33%
5.20%
4.62%
4.41%
3.78%
2.75%
2.31%
2.20%
1.73%
1.65%
1.62%
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
49
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
TTWS‐‐‐‐FF
TSPG‐‐‐‐FF
TTUNBKR‐FF
XPRD‐‐‐‐FH
FSNT‐‐‐‐FF
FLOAD‐‐‐FH
FBUF‐‐‐‐FF
FAXL‐‐‐‐FF
XSCM‐‐‐‐FF
TMSC‐‐‐‐FF
FMARS‐‐‐FH
FSHN‐‐‐‐FH
FWHF‐‐‐‐FF
FUNDER‐‐FF
TCYCLIC‐FF
TBCK‐‐‐‐FF
XSCO‐‐‐‐FH
RLNS‐‐‐‐UF
FTRA‐‐‐‐FF
FWHL‐‐‐‐FF
FAXB‐‐‐‐FF
RBSHCOL‐UE
FOSL‐‐‐‐FH
RBGS‐‐‐‐UF
VBGV‐‐‐‐UE
XFOS‐‐‐‐FF
FCUP‐‐‐‐FF
HET‐13 FTP
RSCR‐‐‐‐UE
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
BTRE‐‐‐‐UE
DEEQ‐‐‐‐UF
TFSH‐‐‐‐FF
SWRG‐‐‐‐FF
TBKR‐‐‐‐FF
AANM‐‐‐‐UE
WSNO‐‐‐‐UE
Track twist leading to FT derailment on pass. line
Gauge spread leading to FT derailment on pass. line
Broken rail in tunnel leading to FT derailment on pass. line
Track maintenance staff error leading to FT derailment on pass. line
Severe braking/snatch leading to FT derailment on pass. line
Uneven loading leading to FT derailment on pass. line
Buffer locking leading to FT derailment on pass. line
Axle failure leading to FT derailment on pass. line
Movement of points under train (equipment fault) leading to FT derailment on pass. line
Misc. track fault leading to FT derailment on pass. line
Marshalling of train leading to FT derailment on pass. line
Shunter error leading to FT derailment on pass. line
Wheel flat or wheel/tyre wear beyond limits leading to FT derailment on pass. line
Twisted underframe leading to FT derailment on pass. line
Cyclic top leading to FT derailment on pass. line
Track buckle leading to FT derailment on pass. line
Incorrect scotch and clip of points leading to FT derailment on pass. line
Running into landslip leading to FT derailment on pass. line ‐ from cutting
Running into object fallen from preceding train leading to FT derailment on pass. line
Wheel failure leading to FT derailment on pass. line
Seized axle box bearing leading to FT derailment on pass. line
Rail bridge collapse ‐ bridge bashing leading to FT derailment on pass. line
Overspeeding leading to FT derailment on pass. line
Rail bridge structural failure leading to FT derailment on pass. line
Running into vehicle fallen from overbridge leading to FT derailment on pass. line
Points in the wrong position and not detected leading to FT derailment on pass. line
Coupling failure leading to FT derailment on pass. line
Structural collapse due to scour and water action leading to FT derailment on pass. line (includes sea walls)
Running into tree leading to FT derailment on pass. line
Equipment detached from same train leads to FT derailment on pass. line
Broken fishplate leading to FT derailment on pass. line
Wrongside signal failure at S&C leading to FT derailment on pass. line
Broken rail leading to FT derailment on pass. line
Running into large animal leading to FT derailment on pass. line
Running into snow/ice leading to FT derailment on pass. line
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
8.00E‐09
7.34E‐09
3.38E‐09
6.32E‐09
5.45E‐09
5.45E‐09
5.45E‐09
5.36E‐09
5.27E‐09
3.63E‐09
2.92E‐09
2.92E‐09
2.73E‐09
2.73E‐09
2.73E‐09
2.73E‐09
2.73E‐09
2.24E‐09
2.11E‐09
2.11E‐09
2.11E‐09
1.48E‐11
1.53E‐09
1.20E‐11
8.67E‐11
1.13E‐09
1.05E‐09
0.3429
0.3146
0.1449
0.2711
0.2338
0.2338
0.2338
0.2299
0.2259
0.1555
0.1250
0.1250
0.1169
0.1169
0.1169
0.1169
0.1169
0.0962
0.0904
0.0904
0.0904
6.36E‐04
0.0654
5.13E‐04
0.0037
0.0483
0.0452
0.0089
0.0082
0.0076
0.0069
0.0061
0.0061
0.0061
0.0060
0.0058
0.0041
0.0033
0.0032
0.0030
0.0030
0.0030
0.0030
0.0030
0.0025
0.0024
0.0024
0.0024
0.0021
0.0018
0.0017
0.0013
0.0012
0.0012
1.62%
1.48%
1.37%
1.25%
1.10%
1.10%
1.10%
1.08%
1.04%
0.73%
0.59%
0.58%
0.55%
0.55%
0.55%
0.54%
0.54%
0.44%
0.43%
0.43%
0.43%
0.38%
0.33%
0.30%
0.23%
0.22%
0.21%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
D
E
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Frt tr km on ps lines
7.41E‐12
3.18E‐04
0.0010
0.19%
E
‐
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
6.07E‐10
4.49E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
0.0260
0.0192
0.0096
0.0096
0.0096
0.0096
0.0096
6.65E‐04
5.02E‐04
2.51E‐04
2.46E‐04
2.46E‐04
2.46E‐04
2.46E‐04
0.12%
0.09%
0.05%
0.04%
0.04%
0.04%
0.04%
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
50
Table B1
National frequency
Hazardous event code
Precursor code
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
RSLP‐‐‐‐FF
BVAN‐‐‐‐UE
MMAT‐‐‐‐UE
BFLL‐‐‐‐UE
UTRN‐‐‐‐UE
BBLN‐‐‐‐UE
RBGD‐‐‐‐UF
RDRN‐‐‐‐UF
RWAL‐‐‐‐UF
RBSH‐‐‐‐UE
TTKD‐‐‐‐UE
RTUNWALLUF
BBLD‐‐‐‐UE
WWIN‐‐‐‐UE
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTP
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
Cause precursor description
Subsidence/landslip under track leading to FT derailment on pass. line
Running into item placed on the track by vandals leading to FT derailment on pass. line
Running into Engineers' materials left foul leading to FT derailment on pass. line
Running into item that have fallen onto the line leading to FT derailment on pass. line
Running into train derailed while in depot/siding leading to FT derailment on pass. line
Running into item blown onto the line leading to FT derailment on pass. line
Running into to debris from overbridge leading to FT derailment on pass. line
Drainage culvert/pipework collapse leading to FT derailment on pass. line
Running into debris from retaining wall leading to FT derailment on pass. line
Bridge bashing leading to bridge displacement (not collapse) and FT derailment on pass. line
Track damage from other undetected derailment leading to FT derailment on pass. line
Running into debris in the tunnel leading to FT derailment on pass. line
Running into object from building site leading to FT derailment on pass. line
High winds leading to FT derailment on pass. line
Running into debris from lineside structure/building, including used and unused station and RBLD‐‐‐‐UF
platform leading to FT derailment on pass. line
RSIG‐‐‐‐UF
Running into debris from signalling gantry leading to FT derailment on pass. line
VMVE‐‐‐‐UE
Running into maintenance vehicle leading to FT derailment on pass. line
ROHL‐‐‐‐UF
Running into debris from OHLE structure leading to FT derailment on pass. line
RQAK‐‐‐‐UE
Structural damage due to earthquake leading to FT derailment on pass. line
WFLD‐‐‐‐UE
Running into flooding leading to FT derailment on pass. line
Derailment of freight train on freight only line outside possession
TSPG‐‐‐‐NF
Gauge spread leading to FT derailment on freight only line
TTWS‐‐‐‐NF
Track twist leading to FT derailment on freight only line
XSGM‐‐‐‐NH
Signaller/ crossing keeper error leading to FT derailment on freight only line
FCATDR‐‐NH
Runaway leading to FT derailment on freight only line
XDSC‐‐‐‐NF
Defective S&C leading to FT derailment on freight only line
FSPD‐‐‐‐NH
Signal passed at danger at S&C leading to FT derailment on freight only line
XMISC‐‐‐NF
Miscellaneous/unknown cause on S&C leading to FT derailment on freight only line
FSHN‐‐‐‐NH
Shunter error leading to FT derailment on freight only line
TTUNBKR‐NF
Broken rail in tunnel leading to FT derailment on freight only line
FMARS‐‐‐NH
Marshalling of train leading to FT derailment on freight only line
FOSL‐‐‐‐NH
Overspeeding leading to FT derailment on freight only line
FMSC‐‐‐‐NF
Miscellaneous mechanical fault leading to FT derailment on freight only line
FCRW‐‐‐‐NH
Other driver/train crew error at S&C leading to FT derailment on freight only line
VBND‐‐‐‐UE
Running into vehicle through boundary fence leading to FT derailment on freight only line
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
2.24E‐10
2.24E‐10
1.73E‐10
1.73E‐10
8.97E‐11
8.67E‐11
6.54E‐11
4.45E‐11
4.45E‐11
4.28E‐11
3.59E‐11
1.59E‐11
1.79E‐11
1.79E‐11
0.0096
0.0096
0.0074
0.0074
0.0038
0.0037
0.0028
0.0019
0.0019
0.0018
0.0015
6.81E‐04
7.69E‐04
7.69E‐04
2.46E‐04
2.46E‐04
1.90E‐04
1.90E‐04
9.84E‐05
9.51E‐05
7.17E‐05
4.88E‐05
4.88E‐05
4.69E‐05
4.01E‐05
3.56E‐05
1.97E‐05
1.97E‐05
0.04%
0.04%
0.03%
0.03%
0.02%
0.02%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.00%
0.00%
D
D
D
D
E
D
E
E
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Frt tr km on ps lines
1.24E‐11
5.30E‐04
1.35E‐05
0.00%
E
‐
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
Frt tr km on ps lines
1.01E‐11
8.97E‐12
6.18E‐12
1.79E‐13
8.97E‐14
2.11E‐07
2.11E‐07
2.11E‐07
2.11E‐07
1.68E‐07
1.68E‐07
1.26E‐07
1.26E‐07
3.25E‐08
4.21E‐08
2.20E‐08
2.18E‐08
1.91E‐08
6.07E‐10
1.11E‐05
9.84E‐06
6.77E‐06
2.01E‐07
1.00E‐07
0.0591
0.0072
0.0072
0.0071
0.0067
0.0057
0.0057
0.0043
0.0043
0.0028
0.0014
9.18E‐04
7.50E‐04
6.43E‐04
6.00E‐04
0.00%
0.00%
0.00%
0.00%
0.00%
10.68%
1.31%
1.31%
1.28%
1.21%
1.03%
1.03%
0.77%
0.77%
0.51%
0.26%
0.17%
0.14%
0.12%
0.11%
E
E
E
E
E
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
4.33E‐04
3.85E‐04
2.65E‐04
7.69E‐06
3.85E‐06
4.954
0.6250
0.6250
0.6250
0.6250
0.5000
0.5000
0.3750
0.3750
0.0966
0.1250
0.0654
0.0648
0.0567
0.0018
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
D
D
D
D
D
D
D
D
D
D
D
D
D
51
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
XFOS‐‐‐‐NF
YMSC‐‐‐‐NE
FSUS‐‐‐‐NF
XPRD‐‐‐‐NH
FLOAD‐‐‐NH
FBUF‐‐‐‐NF
FSNT‐‐‐‐NF
HET‐13 FTF
XSCM‐‐‐‐NF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
FAXL‐‐‐‐NF
RBSHCOL‐UE
TMSC‐‐‐‐NF
RBGS‐‐‐‐UF
TCYCLIC‐NF
FUNDER‐‐NF
FWHF‐‐‐‐NF
TBCK‐‐‐‐NF
XSCO‐‐‐‐NH
VBGV‐‐‐‐UE
RLNS‐‐‐‐UF
FAXB‐‐‐‐NF
FWHL‐‐‐‐NF
FTRA‐‐‐‐NF
HET‐13 FTF
RSCR‐‐‐‐UE
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
FCUP‐‐‐‐NF
BTRE‐‐‐‐UE
DEEQ‐‐‐‐UF
TFSH‐‐‐‐NF
AANM‐‐‐‐UE
HET‐13 FTF
BVAN‐‐‐‐UE
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
WSNO‐‐‐‐UE
TBKR‐‐‐‐NF
RSLP‐‐‐‐NF
SWRG‐‐‐‐NF
Points in the wrong position and not detected leading to FT derailment on freight only line
Miscellaneous/unknown cause on plain line leading to FT derailment on freight only line
Suspension system/bogie failure leading to FT derailment on freight only line
Track maintenance staff error leading to FT derailment on freight only line
Uneven loading leading to FT derailment on freight only line
Buffer locking leading to FT derailment on freight only line
Severe braking/snatch leading to FT derailment on freight only line
Movement of points under train (equipment fault) leading to FT derailment on freight only line
Axle failure leading to FT derailment on freight only line
Rail bridge collapse ‐ bridge bashing leading to FT derailment on freight only line
Misc. track fault leading to FT derailment on freight only line
Rail bridge structural failure leading to FT derailment on freight only line
Cyclic top leading to FT derailment on freight only line
Twisted underframe leading to FT derailment on freight only line
Wheel flat or wheel/tyre wear beyond limits leading to FT derailment on freight only line
Track buckle leading to FT derailment on freight only line
Incorrect scotch and clip of points leading to FT derailment on freight only line
Running into vehicle fallen from overbridge leading to FT derailment on freight only line
Running into landslip leading to FT derailment on freight only line ‐ from cutting
Seized axle box bearing leading to FT derailment on freight only line
Wheel failure leading to FT derailment on freight only line
Running into object fallen from preceding train leading to FT derailment on freight only line
Structural collapse due to scour and water action leading to FT derailment on freight only line (includes sea walls)
Coupling failure leading to FT derailment on freight only line
Running into tree leading to FT derailment on freight only line
Equipment detached from same train leads to FT derailment on freight only line
Broken fishplate leading to FT derailment on freight only line
Running into large animal leading to FT derailment on freight only line
Running into item placed on the track by vandals leading to FT derailment on freight only line
Running into snow/ice leading to FT derailment on freight only line
Broken rail leading to FT derailment on freight only line
Subsidence/landslip under track leading to FT derailment on freight only line
Wrongside signal failure at S&C leading to FT derailment on freight only line
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
1.63E‐08
1.09E‐08
8.18E‐09
6.32E‐09
5.45E‐09
5.45E‐09
5.45E‐09
0.0483
0.0324
0.0243
0.0188
0.0162
0.0162
0.0162
5.48E‐04
3.75E‐04
2.81E‐04
2.13E‐04
1.88E‐04
1.88E‐04
1.88E‐04
0.10%
0.07%
0.05%
0.04%
0.03%
0.03%
0.03%
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
Frt tr km on frt lines
5.27E‐09
0.0156
1.78E‐04
0.03%
D
‐
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
5.02E‐09
1.48E‐11
3.63E‐09
1.20E‐11
2.73E‐09
2.73E‐09
2.73E‐09
2.73E‐09
2.73E‐09
8.67E‐11
2.24E‐09
2.11E‐09
2.11E‐09
2.11E‐09
0.0149
4.40E‐05
0.0108
3.55E‐05
0.0081
0.0081
0.0081
0.0081
0.0081
2.57E‐04
0.0067
0.0063
0.0063
0.0063
1.72E‐04
1.44E‐04
1.25E‐04
1.16E‐04
9.38E‐05
9.38E‐05
9.38E‐05
9.19E‐05
9.19E‐05
8.57E‐05
7.61E‐05
7.25E‐05
7.25E‐05
7.25E‐05
0.03%
0.03%
0.02%
0.02%
0.02%
0.02%
0.02%
0.02%
0.02%
0.02%
0.01%
0.01%
0.01%
0.01%
D
E
D
E
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Frt tr km on frt lines
7.41E‐12
2.20E‐05
7.21E‐05
0.01%
E
‐
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
1.05E‐09
6.07E‐10
4.49E‐10
2.24E‐10
2.24E‐10
0.0031
0.0018
0.0013
6.66E‐04
6.66E‐04
3.62E‐05
2.06E‐05
1.54E‐05
7.72E‐06
7.61E‐06
0.01%
0.00%
0.00%
0.00%
0.00%
D
D
D
D
D
‐
‐
‐
‐
‐
Frt tr km on frt lines
2.24E‐10
6.66E‐04
7.61E‐06
0.00%
D
‐
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
6.66E‐04
6.66E‐04
6.66E‐04
6.66E‐04
7.61E‐06
7.56E‐06
7.56E‐06
7.56E‐06
0.00%
0.00%
0.00%
0.00%
D
D
D
D
‐
‐
‐
‐
52
Table B1
National frequency
Hazardous event code
Precursor code
HET‐13 FTF
HET‐13 FTF
BFLL‐‐‐‐UE
MMAT‐‐‐‐UE
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 FTF
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
Cause precursor description
Running into item that have fallen onto the line leading to FT derailment on freight only line
Running into Engineers' materials left foul leading to FT derailment on freight only line
Running into train derailed while in depots/sidings leading to FT derailment on freight only UTRN‐‐‐‐UE
line
BBLN‐‐‐‐UE
Running into item blown onto the line leading to FT derailment on freight only line
RBGD‐‐‐‐UF
Running into to debris from overbridge leading to FT derailment on freight only line
RDRN‐‐‐‐UF
Drainage culvert/pipework collapse leading to FT derailment on freight only line
RWAL‐‐‐‐UF
Running into debris from retaining wall leading to FT derailment on freight only line
Bridge bashing leading to bridge displacement (not collapse) and FT derailment on freight RBSH‐‐‐‐UE
only line
Track damage from other undetected derailment leading to FT derailment on freight only TTKD‐‐‐‐UE
line
RTUNWALLUF
Running into debris in the tunnel leading to FT derailment on freight only line
BBLD‐‐‐‐UE
Running into object from building site leading to FT derailment on freight only line
WWIN‐‐‐‐UE
High winds leading to FT derailment on freight only line
Running into debris from lineside structure/building, including used and unused station and RBLD‐‐‐‐UF
platform leading to FT derailment on freight only line
RSIG‐‐‐‐UF
Running into debris from signalling gantry leading to FT derailment on freight only line
VMVE‐‐‐‐UE
Running into maintenance vehicle leading to FT derailment on freight only line
ROHL‐‐‐‐UF
Running into debris from OHLE structure leading to FT derailment on freight only line
RQAK‐‐‐‐UE
Structural damage due to earthquake leading to FT derailment on freight only line
WFLD‐‐‐‐UE
Running into flooding leading to FT derailment on freight only line
Derailment of ECS or parcels train on passenger line
FSPD‐‐‐‐CH
Signal passed at danger at S&C leading to ECS or PCLS derailment
XSGM‐‐‐‐CH
Signaller/ crossing keeper error leading to ECS or PCLS derailment
XDSC‐‐‐‐CF
Defective S&C leading to ECS or PCLS derailment
VBND‐‐‐‐UE
Running into vehicle through boundary fence leading to ECS or PCLS derailment
TSPG‐‐‐‐CF
Gauge spread leading to ECS or PCLS derailment
XMISC‐‐‐CF
Miscellaneous/unknown causes on S&C leading to ECS or PCLS derailment
XFOS‐‐‐‐CF
Points in the wrong position and not detected leading to ECS or PCLS derailment
FCATDR‐‐CH
Runaway leading to ECS or PCLS derailment
FSHN‐‐‐‐CH
Shunter error leading to ECS or PCLS derailment
FMSC‐‐‐‐CF
Miscellaneous mechanical fault leading to ECS or PCLS derailment
RBSHCOL‐UE
Rail bridge collapse ‐ bridge bashing leading to ECS or PCLS derailment
TMSC‐‐‐‐CF
Misc. track fault leading to ECS or PCLS derailment
RBGS‐‐‐‐UF
Rail bridge structural failure leading to ECS or PCLS derailment
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Frt tr km on frt lines
Frt tr km on frt lines
1.73E‐10
1.73E‐10
5.15E‐04
5.15E‐04
5.88E‐06
5.88E‐06
0.00%
0.00%
D
D
‐
‐
Frt tr km on frt lines
8.97E‐11
2.66E‐04
3.04E‐06
0.00%
E
‐
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
8.67E‐11
6.54E‐11
4.45E‐11
4.45E‐11
2.57E‐04
1.94E‐04
1.32E‐04
1.32E‐04
2.94E‐06
2.22E‐06
1.51E‐06
1.51E‐06
0.00%
0.00%
0.00%
0.00%
D
E
E
E
‐
‐
‐
‐
Frt tr km on frt lines
4.28E‐11
1.27E‐04
1.45E‐06
0.00%
E
‐
Frt tr km on frt lines
3.59E‐11
1.07E‐04
1.23E‐06
0.00%
E
‐
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
1.59E‐11
1.79E‐11
1.79E‐11
4.72E‐05
5.33E‐05
5.33E‐05
9.30E‐07
6.09E‐07
6.09E‐07
0.00%
0.00%
0.00%
E
E
E
‐
‐
‐
Frt tr km on frt lines
1.24E‐11
3.67E‐05
4.19E‐07
0.00%
E
‐
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
Frt tr km on frt lines
1.01E‐11
8.97E‐12
6.18E‐12
1.79E‐13
8.97E‐14
4.87E‐08
2.71E‐08
2.16E‐08
6.07E‐10
1.08E‐08
1.08E‐08
5.41E‐09
5.41E‐09
4.98E‐09
4.33E‐09
1.48E‐11
3.63E‐09
1.20E‐11
3.43E‐07
3.04E‐07
2.10E‐07
6.17E‐09
3.09E‐09
0.0464
0.0122
0.0068
0.0054
0.0046
0.0028
0.0027
0.0014
0.0013
0.0012
0.0011
0.0010
9.43E‐04
8.29E‐04
0.00%
0.00%
0.00%
0.00%
0.00%
8.37%
2.20%
1.22%
0.98%
0.84%
0.51%
0.49%
0.24%
0.23%
0.22%
0.20%
0.19%
0.17%
0.15%
E
E
E
E
E
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
3.00E‐05
2.66E‐05
1.83E‐05
5.33E‐07
2.66E‐07
3.563
1.125
0.6250
0.5000
0.0140
0.2500
0.2500
0.1250
0.1250
0.1149
0.1000
3.43E‐04
0.0838
2.76E‐04
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
D
D
D
D
D
D
D
D
D
E
D
E
53
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HET‐13 EP
HET‐13 EP
VBGV‐‐‐‐UE
RLNS‐‐‐‐UF
HET‐13 EP
RSCR‐‐‐‐UE
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
FOSL‐‐‐‐CH
TBCK‐‐‐‐CF
BTRE‐‐‐‐UE
FCRW‐‐‐‐CH
DEEQ‐‐‐‐UF
XPRD‐‐‐‐CH
TTUNBKR‐CF
FWHL‐‐‐‐CF
TTWS‐‐‐‐CF
XSCO‐‐‐‐CH
TFSH‐‐‐‐CF
AANM‐‐‐‐UE
BVAN‐‐‐‐UE
TBKR‐‐‐‐CF
WSNO‐‐‐‐UE
RSLP‐‐‐‐CF
SWRG‐‐‐‐CF
FAXB‐‐‐‐CF
FAXL‐‐‐‐CF
XSCM‐‐‐‐CF
MMAT‐‐‐‐UE
BFLL‐‐‐‐UE
FTRA‐‐‐‐CF
YMSC‐‐‐‐CE
FWHF‐‐‐‐CF
FSUS‐‐‐‐CF
FBUF‐‐‐‐CF
UTRN‐‐‐‐UE
BBLN‐‐‐‐UE
RBGD‐‐‐‐UF
RTUNWALLUF
RDRN‐‐‐‐UF
Running into vehicle fallen from overbridge leading to ECS or PCLS derailment
Running into landslip leading to ECS or PCLS derailment ‐ from cutting
Structural collapse due to scour and water action leading to ECS or PCLS derailment (includes sea walls)
Overspeeding leading to ECS or PCLS derailment
Track buckle leading to ECS or PCLS derailment
Running into tree leading to ECS or PCLS derailment
Other driver/train crew error at S&C leading to ECS or PCLS derailment
Equipment detached from same train leads to ECS or PCLS derailment
Track maintenance staff error leading to ECS or PCLS derailment
Broken rail in tunnel leading to ECS or PCLS derailment
Wheel failure leading to ECS or PCLS derailment
Track twist leading to ECS or PCLS derailment
Incorrect scotch and clip of points leading to ECS or PCLS derailment
Broken fishplate leading to ECS or PCLS derailment
Running into large animal leading to ECS or PCLS derailment
Running into item placed on the track by vandals leading to ECS or PCLS derailment
Broken rail leading to ECS or PCLS derailment
Running into snow/ice leading to ECS or PCLS derailment
Subsidence/landslip under track leading to ECS or PCLS derailment
Wrongside signal failure at S&C leading to ECS or PCLS derailment
Seized axle box bearing leading to ECS or PCLS derailment
Axle failure leading to ECS or PCLS derailment
Movement of points under train (equipment fault) leading to ECS or PCLS derailment
Running into Engineers' materials left foul leading to ECS or PCLS derailment
Running into item that have fallen onto the line leading to ECS or PCLS derailment
Running into objects fallen from preceding trains leading to ECS or PCLS derailment
Miscellaneous/unknown cause on plain line leading to ECS or PCLS derailment
Wheel flat or wheel/tyre wear beyond limits leading to ECS or PCLS derailment
Suspension system/bogie failure leading to ECS or PCLS derailment
Buffer locking leading to ECS or PCLS derailment
Running into train derailed while in depot/siding leading to ECS or PCLS derailment
Running into items blown onto the line leading to ECS or PCLS derailment
Running into to debris from overbridge leading to ECS or PCLS derailment
Running into debris in the tunnel leading to ECS or PCLS derailment
Drainage culvert/pipework collapse leading to ECS or PCLS derailment
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
ECS & PCLS trn km
ECS & PCLS trn km
8.67E‐11
2.24E‐09
0.0020
0.0518
6.62E‐04
5.60E‐04
0.12%
0.10%
D
D
‐
‐
ECS & PCLS trn km
7.41E‐12
1.71E‐04
5.14E‐04
0.09%
E
‐
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
1.42E‐09
7.33E‐10
6.07E‐10
5.67E‐10
4.49E‐10
3.78E‐10
9.45E‐11
2.83E‐10
2.44E‐10
2.44E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
2.24E‐10
1.89E‐10
1.89E‐10
1.89E‐10
1.73E‐10
1.73E‐10
9.45E‐11
9.45E‐11
9.45E‐11
9.45E‐11
9.45E‐11
8.97E‐11
8.67E‐11
6.54E‐11
1.59E‐11
4.45E‐11
0.0327
0.0169
0.0140
0.0131
0.0104
0.0087
0.0022
0.0065
0.0056
0.0056
0.0052
0.0052
0.0052
0.0052
0.0052
0.0052
0.0052
0.0044
0.0044
0.0044
0.0040
0.0040
0.0022
0.0022
0.0022
0.0022
0.0022
0.0021
0.0020
0.0015
3.67E‐04
0.0010
5.14E‐04
1.83E‐04
1.52E‐04
1.42E‐04
1.17E‐04
9.44E‐05
7.47E‐05
7.37E‐05
6.36E‐05
6.10E‐05
5.83E‐05
5.60E‐05
5.60E‐05
5.60E‐05
5.60E‐05
5.60E‐05
5.60E‐05
4.91E‐05
4.91E‐05
4.72E‐05
4.33E‐05
4.33E‐05
2.46E‐05
2.46E‐05
2.46E‐05
2.46E‐05
2.46E‐05
2.24E‐05
2.17E‐05
1.63E‐05
1.26E‐05
1.11E‐05
0.09%
0.03%
0.03%
0.03%
0.02%
0.02%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
D
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
54
Table B1
National frequency
Hazardous event code
Precursor code
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
RWAL‐‐‐‐UF
RBSH‐‐‐‐UE
TTKD‐‐‐‐UE
BBLD‐‐‐‐UE
WWIN‐‐‐‐UE
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 EP
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
HET‐13 POS
Cause precursor description
Running into debris from retaining wall leading to ECS or PCLS derailment
Bridge bashing leading to bridge displacement (not collapse) and ECS or PCLS derailment
Track damage from other undetected derailment leading to ECS or PCLS derailment
Running into objects from building site leading to ECS or PCLS derailment
High winds leading to ECS or PCLS derailment
Running into debris from lineside structure/building, including used and unused station and RBLD‐‐‐‐UF
platform leading to ECS or PCLS derailment.
RSIG‐‐‐‐UF
Running into debris from signalling gantry leading to ECS or PCLS derailment
VMVE‐‐‐‐UE
Running into maintenance vehicle leading to ECS or PCLS derailment
ROHL‐‐‐‐UF
Running into debris from OHLE structure leading to ECS or PCLS derailment
RQAK‐‐‐‐UE
Structural damage due to earthquake leading to ECS or PCLS derailment
WFLD‐‐‐‐UE
Running into flooding leading to ECS or PCLS derailment
Derailment of train inside possession (including OTP)
ORSSOW‐‐‐H
Unsafe System of Work employed by workers leading to rollover ‐ Inside possession
ORDRVAT‐‐H
Driver/operator error ‐ Inattention leading to rollover ‐ Inside Possession
ODINFDEF‐F
Infrastructure defect leading to derailment ‐ Inside possession
ODSSOW‐‐‐H
Unsafe System of Work employed by workers leading to derailment ‐ Inside possession
ODVHDEF‐‐F
Vehicle defect leading to derailment ‐ Inside Possession
ORINFDEF‐F
Infrastructure defect leading to rollover ‐ Inside possession
ODPCERR‐‐H
Points controller error leading to derailment ‐ Inside possession
ODDRVAT‐‐H
Driver/operator error ‐ Inattention leading to derailment ‐ Inside Possession
ODCOLOBJ‐H
Collision with obstruction on/near line leading to derailment ‐ Inside Possession
ODIMINT‐‐H
Incorrect management of IC interface leading to derailment ‐ Inside Possession
ODSIGERR‐H
Signaller error leading to derailment ‐ Inside possession
ORVHDEF‐‐F
Vehicle defect leading to rollover ‐ Inside Possession
ORIMINT‐‐H
Incorrect management of IC interface leading to rollover ‐ Inside Possession
ODDRVBRK‐H
Driver/operator error ‐ Braking leading to derailment ‐ Inside Possession
ODDRVSPEDH
Driver/operator error ‐ Speeding leading to derailment ‐ Inside Possession
ODDRVSPADH
Driver/operator error ‐ Signal Passed at Danger leading to derailment ‐ Inside Possession
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
4.45E‐11
4.28E‐11
3.59E‐11
1.79E‐11
1.79E‐11
0.0010
9.88E‐04
8.29E‐04
4.15E‐04
4.15E‐04
1.11E‐05
1.07E‐05
9.34E‐06
4.48E‐06
4.48E‐06
0.00%
0.00%
0.00%
0.00%
0.00%
E
E
E
E
E
‐
‐
‐
‐
‐
ECS & PCLS trn km
1.24E‐11
2.85E‐04
3.09E‐06
0.00%
E
‐
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
ECS & PCLS trn km
1.01E‐11
8.97E‐12
6.18E‐12
1.79E‐13
8.97E‐14
4.70E‐07
2.01E‐07
5.30E‐06
5.17E‐06
2.42E‐06
6.71E‐08
1.74E‐06
1.54E‐06
8.05E‐07
5.37E‐07
4.03E‐07
9.26E‐09
9.26E‐09
9.26E‐09
9.26E‐09
9.26E‐09
2.52E‐06
2.24E‐06
1.54E‐06
4.67E‐08
2.33E‐08
0.1695
0.0585
0.0251
0.0222
0.0217
0.0101
0.0084
0.0073
0.0065
0.0034
0.0023
0.0017
0.0012
0.0012
3.89E‐05
3.89E‐05
3.89E‐05
0.00%
0.00%
0.00%
0.00%
0.00%
30.62%
10.56%
4.53%
4.02%
3.92%
1.83%
1.51%
1.32%
1.17%
0.61%
0.41%
0.31%
0.21%
0.21%
0.01%
0.01%
0.01%
E
E
E
E
E
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
2.34E‐04
2.07E‐04
1.43E‐04
4.15E‐06
2.07E‐06
39.81
1.000
0.4286
11.29
11.00
5.143
0.1429
3.714
3.286
1.714
1.143
0.8571
0.0197
0.0197
0.0197
0.0197
0.0197
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
D
D
D
D
D
D
D
D
D
D
E
E
E
E
E
55
Table B1
National frequency
Hazardous event code
HET‐17
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
Precursor code
Cause precursor description
Fire on passenger train
Fire on passenger train interior
PFIREIAVEH
PT EMU: fires inside PT due to arson/vandalism fires
PFIREIBCLF
PT ELOCO: fires inside PT buffet car fires
PFIREIBCHF
PT HST/DEMU: fires inside PT buffet car fires
PFIREICFEF
PT EMU: fires inside PT cab fires
PFIREIBCEF
PT EMU: fires inside PT buffet car fires
PT HST/DEMU: fires inside PT due to human error /carelessness (includes crew and PFIREIHEHF
passenger and discarded cigarettes)
PFIREIELEF
PT EMU: fires inside PT due to electrical equipment
PFIREIHVEF
PT EMU: fires inside PT due to H&V equipment fault
PFIREIELDF
PT DMU: fires inside PT due to electrical equipment
PFIREIAVDH
PT DMU: fires inside PT due to arson/vandalism fires
PT DMU: fires inside PT due to human error /carelessness (includes crew and passenger and PFIREIHEDH
discarded cigarettes)
PFIREIAVHH
PT HST/DEMU: fires inside PT due to arson/vandalism fires
PFIREIAVLH
PT ELOCO: fires inside PT due to arson/vandalism fires
PFIREICFDF
PT DMU: fires inside PT cab fires
PT ELOCO: fires inside PT due to human error /carelessness (includes crew and passenger PFIREIHELH
and discarded cigarettes)
PFIREIHVDF
PT DMU: fires inside PT due to H&V equipment faults
PT EMU: fires inside PT due to human error /carelessness (includes crew and passenger and PFIREIHEEH
discarded cigarettes)
PFIREIBCIF
PT DLOCO: fires inside PT buffet car fires
PFIREIELHF
PT HST/DEMU: fires inside PT due to electrical equipment
PFIREIHVLF
PT ELOCO: fires inside PT due to H&V equipment faults
PT DLOCO: fires inside PT due to human error /carelessness (includes crew and passenger PFIREIHEIH
and discarded cigarettes)
PFIREIOTEF
PT EMU: fires inside due to other causes (including mechanical equipment)
PFIREIAVIH
PT DLOCO: fires inside PT due to arson/vandalism fires
PFIREIHVIF
PT DLOCO: fires inside PT due to H&V equipment faults
PFIREICFHF
PT HST/DEMU: fires inside PT cab fires
PFIREICFLF
PT ELOCO: fires inside PT cab fires
PFIREIOTDF
PT DMU: fire inside due to other causes (including mechanical equipment)
PFIREIHVHF
PT HST/DEMU: fires inside PT due to H&V equipment faults
PFIREICFIF
PT DLOCO: fires inside PT cab fires
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass EMU trn km
Pass el loco trn km
Pass HST trn km
Pass EMU trn km
Pass EMU trn km
1.02E‐07
1.19E‐07
2.70E‐08
6.28E‐09
4.48E‐09
82.51
38.76
22.67
2.200
1.800
1.400
1.000
0.0985
0.0371
0.0217
0.0021
0.0017
0.0013
9.56E‐04
100.00%
37.64%
22.01%
2.14%
1.75%
1.36%
0.97%
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
Pass HST trn km
1.50E‐08
1.000
9.56E‐04
0.97%
D
‐
Pass EMU trn km
Pass EMU trn km
Pass DMU trn km
Pass DMU trn km
3.89E‐09
3.59E‐09
3.89E‐09
3.76E‐09
0.8683
0.8000
0.6899
0.6667
8.30E‐04
7.65E‐04
6.60E‐04
6.38E‐04
0.84%
0.78%
0.67%
0.65%
D
D
D
D
‐
‐
‐
‐
Pass DMU trn km
2.82E‐09
0.5000
4.78E‐04
0.49%
D
‐
Pass HST trn km
Pass el loco trn km
Pass DMU trn km
6.44E‐09
2.32E‐08
2.26E‐09
0.4286
0.4286
0.4000
4.10E‐04
4.10E‐04
3.83E‐04
0.42%
0.42%
0.39%
D
D
D
‐
‐
‐
Pass el loco trn km
2.16E‐08
0.4000
3.83E‐04
0.39%
D
‐
Pass DMU trn km
2.26E‐09
0.4000
3.83E‐04
0.39%
D
‐
Pass EMU trn km
1.79E‐09
0.4000
3.83E‐04
0.39%
D
‐
Pass dsl loco trn km
Pass HST trn km
Pass el loco trn km
1.08E‐07
3.89E‐09
1.35E‐08
0.3000
0.2590
0.2500
2.87E‐04
2.48E‐04
2.39E‐04
0.29%
0.25%
0.24%
D
D
D
‐
‐
‐
Pass dsl loco trn km
9.00E‐08
0.2500
2.39E‐04
0.24%
D
‐
Pass EMU trn km
Pass dsl loco trn km
Pass dsl loco trn km
Pass HST trn km
Pass el loco trn km
Pass DMU trn km
Pass HST trn km
Pass dsl loco trn km
1.02E‐09
7.20E‐08
7.20E‐08
3.00E‐09
1.08E‐08
1.02E‐09
2.50E‐09
3.60E‐08
0.2285
0.2000
0.2000
0.2000
0.2000
0.1816
0.1667
0.1000
2.18E‐04
1.91E‐04
1.91E‐04
1.91E‐04
1.91E‐04
1.74E‐04
1.59E‐04
9.56E‐05
0.22%
0.19%
0.19%
0.19%
0.19%
0.18%
0.16%
0.10%
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
56
Table B1
National frequency
Hazardous event code
Precursor code
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17i
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
PFIREIELLF
PT ELOCO: fires inside PT due to electrical equipment
PFIREIOTHF
PT HST/DEMU: fires inside due to other causes (including mechanical equipment)
PFIREIOTLF
PT ELOCO: fire inside due to other causes (including mechanical equipment)
PFIREIELIF
PT DLOCO: fires inside PT due to electrical equipment
PFIREIOTIF
PT DLOCO: fires inside due to other causes (including mechanical equipment)
Fire on passenger train exterior
PFIREOENDF
PT DMU: engine fires (including exhaust fires and oil/diesel leaks)
PFIREOENHF
PT HST/DEMU: engine fires (including exhaust fires and oil/diesel leaks)
PFIREOBSDF
PT DMU: brake fires (sparking or dragging)
PFIREOOUDF
PT DMU: underframe fire outside due to other causes
PFIREOEUDF
PT DMU: electric equipment fires outside (underframe)
PFIREOOTDF
PT DMU: fires outside due to other causes (excluding underframe)
PFIREOEUEF
PT EMU: electric equipment fires (underframe) excluding traction motor
PFIREOOUEF
PT EMU: underframe fire outside due to other causes
PFIREOBSIF
PT DLOCO: brake fires (sparking or dragging)
PFIREOAXDF
PT DMU: hot/failed axle box fires
PFIREOOUHF
PT HST/DEMU: underframe fire outside due to other causes
PFIREOTMEF
PT EMU: traction motors fires
PFIREOTMIF
PT DLOCO: traction motor fires
PFIREOOTEF
PT EMU: fires outside due to other causes (excluding underframe)
PFIREOMEDF
PT DMU: mechanical equipment fires
PFIREOOTHF
PT HST/DEMU: fires outside due to other causes (excluding underframe)
PFIREOAXEF
PT EMU: hot/failed axle box fires
PFIREOTMHF
PT HST/DEMU: traction motor fires
PFIREOBSHF
PT HST/DEMU: brake fires (sparking or dragging)
PFIREOAXHF
PT HST/DEMU: hot/failed axle box fires
PFIREOELDF
PT DMU: electrical equipment fires (excluding underframe)
PFIREOEUHF
PT HST/DEMU: electrical equipment fires (underframe) excluding traction motor
PFIREOCCEF
PT EMU: current collection/return fires
PFIREOMEEF
PT EMU: mechanical equipment fires
PFIREOBSLF
PT ELOCO: brake fires (sparking or dragging)
PFIREOENIF
PT DLOCO: engine fires (including exhaust fires and oil/diesel leaks)
PFIREOMEHF
PT HST/DEMU: mechanical equipment fires
PFIREOELEF
PT EMU: electrical equipment fires (excluding underframe)
PFIREOBSEF
PT EMU: brake fires (sparking or dragging)
PFIREOVAEH
PT EMU: fires outside PT due to vandalism
Cause precursor description
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass el loco trn km
Pass HST trn km
Pass el loco trn km
Pass dsl loco trn km
Pass dsl loco trn km
3.89E‐09
1.02E‐09
1.02E‐09
3.89E‐09
1.02E‐09
Pass DMU trn km
Pass HST trn km
Pass DMU trn km
Pass DMU trn km
Pass DMU trn km
Pass DMU trn km
Pass EMU trn km
Pass EMU trn km
Pass dsl loco trn km
Pass DMU trn km
Pass HST trn km
Pass EMU trn km
Pass dsl loco trn km
Pass EMU trn km
Pass DMU trn km
Pass HST trn km
Pass EMU trn km
Pass HST trn km
Pass HST trn km
Pass HST trn km
Pass DMU trn km
Pass HST trn km
Pass EMU trn km
Pass EMU trn km
Pass el loco trn km
Pass dsl loco trn km
Pass HST trn km
Pass EMU trn km
Pass EMU trn km
Pass EMU trn km
5.08E‐08
8.51E‐08
1.24E‐08
1.18E‐08
1.13E‐08
7.03E‐09
1.20E‐08
1.17E‐08
3.60E‐07
5.21E‐09
1.17E‐08
8.97E‐09
2.16E‐07
7.02E‐09
2.85E‐09
7.02E‐09
5.18E‐09
6.44E‐09
6.44E‐09
5.18E‐09
1.91E‐09
5.01E‐09
2.99E‐09
2.83E‐09
3.25E‐08
7.20E‐08
2.84E‐09
1.91E‐09
1.79E‐09
1.79E‐09
0.0719
0.0682
0.0189
0.0108
0.0028
43.75
9.000
5.667
2.200
2.087
2.000
1.247
2.667
2.616
1.000
0.9234
0.7814
2.000
0.6000
1.565
0.5045
0.4673
1.155
0.4286
0.4286
0.3448
0.3389
0.3333
0.6667
0.6321
0.6000
0.2000
0.1889
0.4265
0.4000
0.4000
6.88E‐05
6.52E‐05
1.81E‐05
1.03E‐05
2.72E‐06
0.0614
0.0158
0.0100
0.0039
0.0037
0.0035
0.0022
0.0018
0.0018
0.0018
0.0016
0.0014
0.0013
0.0011
0.0011
8.88E‐04
8.22E‐04
7.78E‐04
7.54E‐04
7.54E‐04
6.07E‐04
5.97E‐04
5.87E‐04
4.49E‐04
4.26E‐04
4.04E‐04
3.52E‐04
3.32E‐04
2.87E‐04
2.69E‐04
2.69E‐04
0.07%
0.07%
0.02%
0.01%
0.00%
62.36%
16.09%
10.13%
3.93%
3.73%
3.58%
2.23%
1.82%
1.79%
1.79%
1.65%
1.40%
1.37%
1.07%
1.07%
0.90%
0.84%
0.79%
0.77%
0.77%
0.62%
0.61%
0.60%
0.46%
0.43%
0.41%
0.36%
0.34%
0.29%
0.27%
0.27%
D
E
D
E
E
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
E
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
57
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
HET‐17e
PFIREOVADH
PFIREOELHF
PFIREOEUIF
PFIREOVAIH
PFIREOVAHH
PFIREOOULF
PFIREOEULF
PFIREOTMLF
PFIREOOTLF
PFIREOCCLF
PFIREOENLF
PFIREOAXLF
PFIREOOUIF
PFIREOVALH
PFIREOENEF
PFIREOMELF
PFIREOOTIF
PFIREOAXIF
PFIREOELLF
PFIREOMEIF
PFIREOELIF
PT DMU: fires due to vandalism
PT HST/DEMU: electrical equipment fires (excluding underframe)
PT DLOCO: electrical equipment fires (underframe) excluding traction motor
PT DLOCO: fires due to vandalism
PT HST/DEMU: fires due to vandalism
PT ELOCO: underframe fire outside due to other causes
PT ELOCO: electrical equipment fires (underframe) excluding traction motor
PT ELOCO: traction motor fires
PT ELOCO: fires outside due to other causes (excluding underframe)
PT ELOCO: current collection/return fires
PT ELOCO: engine fires (including oil/diesel leak)
PT ELOCO: hot/failed axle box fires
PT DLOCO: underframe fire outside due to other causes
PT ELOCO: fires due to vandalism
PT EMU: engine fires (including oil/diesel leak fires)
PT ELOCO: mechanical equipment fires
PT DLOCO: fires outside due to other causes (excluding underframe)
PT DLOCO: hot/failed axle box fires
PT ELOCO: electrical equipment fires (excluding underframe)
PT DLOCO: mechanical equipment fires
PT DLOCO: electrical equipment fires (excluding underframe)
HET‐20
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
Fire on non‐passenger train
Fire on non‐passenger train outside possession
PFWGCAR‐E
Fire on FT or PCLS wagon ‐ cargo
PFWGHAB‐E
Fire on FT or PCLS wagon ‐ axle/bearing failure
PFWGSBS‐E
Fire on FT or PCLS wagon ‐ brakes (sparking or dragging)
PFWGVAN‐E
Fire on FT or PCLS wagon ‐ vandalism/arson
PFWGHE‐‐E
Fire on FT or PCLS wagon ‐ human error/carelessness
PFLCDENG‐E
Fire on FT or PCLS diesel loco ‐ engine (including exhaust fires and oil/diesel leaks)
PFOTMEN‐‐E
Fire on OTM outside possession ‐ engine (including exhaust fires and oil/diesel leaks)
PFWGOTHUE
Fire on FT or PCLS wagon ‐ other underframe
PFWGELU‐E
Fire on FT or PCLS wagon ‐ electrical underframe (excluding traction motor)
PFWGOTH‐E
Fire on FT or PCLS wagon ‐ other (excluding underframe)
PFWGEL‐‐E
Fire on FT or PCLS wagon ‐ all electrical (excluding underframe)
PFDCSDMUEE
Fire on DMU ECS/berthed ‐ engine (including exhaust fires and oil/diesel leaks)
Version 7.1 — August 2011
Normaliser
Pass DMU trn km
Pass HST trn km
Pass dsl loco trn km
Pass dsl loco trn km
Pass HST trn km
Pass el loco trn km
Pass el loco trn km
Pass el loco trn km
Pass el loco trn km
Pass el loco trn km
Pass el loco trn km
Pass el loco trn km
Pass dsl loco trn km
Pass el loco trn km
Pass EMU trn km
Pass el loco trn km
Pass dsl loco trn km
Pass dsl loco trn km
Pass el loco trn km
Pass dsl loco trn km
Pass dsl loco trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
ECS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
ECS trn km
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
8.06E‐10
1.91E‐09
4.00E‐08
3.60E‐08
1.25E‐09
1.17E‐08
1.08E‐08
7.73E‐09
7.02E‐09
5.41E‐09
5.41E‐09
5.19E‐09
1.17E‐08
4.51E‐09
3.74E‐10
2.84E‐09
7.02E‐09
5.19E‐09
1.91E‐09
2.84E‐09
1.91E‐09
0.1429
0.1273
0.1111
0.1000
0.0833
0.2169
0.2000
0.1429
0.1297
0.1000
0.1000
0.0959
0.0326
0.0833
0.0833
0.0524
0.0195
0.0144
0.0353
0.0079
0.0053
2.51E‐04
2.24E‐04
1.96E‐04
1.76E‐04
1.47E‐04
1.46E‐04
1.35E‐04
9.62E‐05
8.74E‐05
6.74E‐05
6.74E‐05
6.46E‐05
5.74E‐05
5.61E‐05
5.61E‐05
3.53E‐05
3.43E‐05
2.54E‐05
2.38E‐05
1.39E‐05
9.35E‐06
0.26%
0.23%
0.20%
0.18%
0.15%
0.15%
0.14%
0.10%
0.09%
0.07%
0.07%
0.07%
0.06%
0.06%
0.06%
0.04%
0.03%
0.03%
0.02%
0.01%
0.01%
7.35E‐09
6.78E‐09
5.65E‐09
1.70E‐09
1.13E‐09
2.49E‐08
2.68E‐08
5.39E‐11
5.39E‐11
5.39E‐11
5.39E‐11
1.46E‐08
9.201
6.868
0.3421
0.3158
0.2632
0.0789
0.0526
1.158
0.6000
0.0025
0.0025
0.0025
0.0025
0.3273
0.0230
0.0157
0.0049
0.0045
0.0038
0.0011
7.51E‐04
1.62E‐04
4.46E‐05
3.58E‐05
3.58E‐05
3.58E‐05
3.58E‐05
2.43E‐05
100.00%
68.51%
21.27%
19.63%
16.36%
4.91%
3.27%
0.71%
0.19%
0.16%
0.16%
0.16%
0.16%
0.11%
D
D
D
D
D
E
D
D
E
D
D
D
E
D
D
E
E
E
D
E
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
D
D
D
D
D
D
E
E
E
E
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
58
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HET‐20A
HET‐20A
HET‐20A
HET‐20A
PFLCDEU‐‐E
PFLCELTM‐E
PFLCDBRS‐E
PFLCDE‐‐‐E
HET‐20A
PFLCDERF‐E
HET‐20A
PFDCSHSTEE
HET‐20A
PFECSEU‐E
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
PFOTMELU‐E
PFECSE‐‐E
PFOTMEL‐‐E
PFECSAV‐E
PFECSCC‐E
PFDCSDMUNE
PFLCDEDBSE
PFDCSBS‐‐E
PFOTMOTU‐E
PFLCDHE‐‐E
PFDCSDMUFE
PFECSAX‐E
PFOTMHE‐‐E
PFOTMAX‐‐E
PFLCDETM‐E
PFDCSHSTNE
PFLCDABF‐E
PFLCDTM‐‐E
PFLCDUC‐‐E
PFLCELEUE
PFLCELBSFE
PFLCELE‐‐E
PFDCSDMUOE
PFDCSHSTFE
PFDCSHSTUE
PFECSBS‐E
PFECSDRB‐E
Fire on FT or PCLS diesel loco ‐ electrical (excluding underframe)
Fire on FT or PCLS electric loco ‐ traction motor fires
Fire on FT or PCLS diesel loco ‐ brakes (sparking or dragging)
Fire on FT or PCLS diesel loco ‐ electrical underframe (excluding traction motor fires)
Fire on diesel loco (including ECS/berthed) ‐ engine (including exhaust fires and oil/diesel leaks)
Fire on HST/DEMU ECS ‐ engine (including oil/diesel leaks and exhaust system)
Fire on EMU (ECS/berthed) ‐ all electrical underframe (excluding traction motor and current collection)
Fire on OTM outside possession ‐ all underframe electrical fires (excluding traction motor)
Fire on EMU (ECS/berthed) ‐ all electrical (excluding underframe and current collection)
Fire on OTM outside possession ‐ all electrical fires (excluding underframe)
Fire on EMU (ECS/berthed)‐ arson/vandalism
Fire on EMU (ECS/berthed) ‐ current collection/return
Fire on DMU ECS/berthed ‐ underframe electrical fires
Fire on diesel loco (including ECS/berthed) ‐ brakes (sparking or dragging)
Fire on diesel hauled stock ECS ‐ brakes (sparking or dragging)
Fire on OTM outside possession ‐ other underframe
Fire on FT or PCLS diesel loco ‐ human error/carelessness
Fire on DMU ECS/berthed ‐ electrical fires (excluding underframe)
Fire on EMU (ECS/berthed) ‐ axle/bearing failure
Fire on OTM (outside possession) ‐ human error/carelessness
Fire on OTM outside possession ‐ axle/bearing failure
Fire on diesel loco (including ECS/berthed) ‐ traction motor fires
Fire on HST/DEMU ECS ‐ all electrical underframe fires (excluding traction motors)
Fire on FT or PCLS diesel loco ‐ axle/bearing failure
Fire on FT or PCLS diesel loco ‐ traction motor fires
Fire on FT or PCLS diesel loco ‐ other underframe
Fire on FT or PCLS electric loco ‐ electrical underframe (excluding traction motor)
Fire on FT or PCLS electric loco ‐ brakes (sparking or dragging)
Fire on FT or PCLS electric loco ‐ electrical (excluding underframe)
Fire on DMU ECS/berthed ‐ due to other causes (excluding underframe)
Fire on HST/DEMU ECS ‐ all electrical (excluding underframe)
Fire on HST/DEMU ECS ‐ other underframe
Fire on EMU (ECS/berthed) ‐ brakes (sparking or dragging)
Fire on electric hauled stock ECS ‐ brakes (sparking or dragging)
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
3.39E‐09
3.39E‐09
2.83E‐09
2.83E‐09
0.1579
0.1579
0.1316
0.1316
2.21E‐05
2.21E‐05
1.84E‐05
1.84E‐05
0.10%
0.10%
0.08%
0.08%
D
D
D
D
‐
‐
‐
‐
ECS trn km
9.75E‐09
0.2182
1.62E‐05
0.07%
D
‐
ECS trn km
8.77E‐09
0.1964
1.46E‐05
0.06%
D
‐
ECS trn km
7.89E‐09
0.1765
1.31E‐05
0.06%
D
‐
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
Frt & PCLS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
7.18E‐09
6.58E‐09
5.98E‐09
5.85E‐09
5.58E‐09
5.06E‐09
4.87E‐09
4.74E‐09
4.47E‐09
1.13E‐09
4.22E‐09
3.90E‐09
3.72E‐09
3.72E‐09
2.85E‐09
2.40E‐09
5.65E‐10
5.65E‐10
5.65E‐10
5.65E‐10
5.65E‐10
5.65E‐10
2.20E‐09
2.00E‐09
1.95E‐09
1.95E‐09
1.95E‐09
0.1606
0.1471
0.1338
0.1309
0.1249
0.1133
0.1091
0.1062
0.1000
0.0526
0.0944
0.0873
0.0833
0.0833
0.0637
0.0538
0.0263
0.0263
0.0263
0.0263
0.0263
0.0263
0.0493
0.0448
0.0436
0.0436
0.0436
1.19E‐05
1.09E‐05
9.94E‐06
9.73E‐06
9.29E‐06
8.42E‐06
8.11E‐06
7.89E‐06
7.43E‐06
7.36E‐06
7.01E‐06
6.49E‐06
6.19E‐06
6.19E‐06
4.73E‐06
4.00E‐06
3.68E‐06
3.68E‐06
3.68E‐06
3.68E‐06
3.68E‐06
3.68E‐06
3.67E‐06
3.33E‐06
3.24E‐06
3.24E‐06
3.24E‐06
0.05%
0.05%
0.04%
0.04%
0.04%
0.04%
0.04%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.02%
0.02%
0.02%
0.02%
0.02%
0.02%
0.02%
0.02%
0.02%
0.01%
0.01%
0.01%
0.01%
E
D
E
D
D
D
D
E
D
D
D
D
D
D
E
E
D
D
D
D
D
D
E
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
59
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
PFECSTM‐E
PFECSOUCE
PFLCELCC‐E
PFDCSHSTOE
PFLCELETME
PFLCDO‐‐‐E
PFLCDOU‐‐E
PFLCELEN‐E
PFDCSDMUBE
PFDCSDMUVE
PFDCSDMUUE
PFDCSHSTME
PFECSO‐‐E
PFECSHE‐‐E
PFECSEN‐E
PFDCSHSTRE
PFDCSHSTBE
PFDCSDMUAE
PFDCSEFU‐E
HET‐20A
PFDCSDEL‐E
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
PFLCELBS‐E
PFECSEFU‐E
PFLCELELUE
PFDCSEF‐‐E
PFLCDEEL‐E
PFLCELEL‐E
PFLCELCCPE
PFECSEF‐‐E
PFLCDAV‐‐E
PFLCDOF‐‐E
PFDCSOTU‐E
PFLCELOTUE
PFECSOTU‐E
PFDCSOT‐‐E
PFLCELOT‐E
Fire on EMU (ECS/berthed) ‐ traction motor fires
Fire on EMU (ECS/berthed) ‐ other underframe cause
Fire on FT or PCLS electric loco ‐ current collection/return
Fire on HST/DEMU ECS ‐ other (excluding underframe)
Fire on electric loco (ECS and berthed) ‐ traction motor fires
Fire on diesel loco (including ECS and berthed) ‐ other (excluding underframe)
Fire on diesel loco (including ECS and berthed) ‐ other underframe fires
Fire on electric loco (ECS and berthed) ‐ engine (including fires and oil/diesel leaks)
Fire on DMU ECS/berthed ‐ brakes (sparking or dragging)
Fire on DMU ECS/berthed ‐ arson/vandalism
Fire on DMU ECS/berthed ‐ due to other causes (underframe)
Fire on HST/DEMU ECS ‐ traction motor fires
Fire on EMU (ECS/berthed) ‐ other (excluding underframe)
Fire on electric hauled stock ECS ‐ human error/carelessness
Fire on EMU (ECS/berthed) ‐ engine (including exhaust fires and oil/diesel leaks)
Fire on HST/DEMU ECS ‐ axle/bearing failure
Fire on HST/DEMU ECS ‐ brakes (sparking or dragging)
Fire on DMU ECS/berthed ‐ axle/bearing failure
Fire on diesel hauled stock ECS ‐ electrical underframe (excluding traction motor)
Fire on diesel loco (including ECS and berthed) ‐ electrical underframe (excluding traction motor)
Fire on electric loco (ECS and berthed) ‐ brakes (sparking or dragging)
Fire on electric hauled stock ECS ‐ electrical underframe (excluding traction motor)
Fire on electric loco (ECS and berthed) ‐ electrical underframe (excluding traction motor)
Fire on diesel hauled stock ECS ‐ all electrical (excluding underframe)
Fire on diesel loco (including ECS and berthed) ‐ electrical (excluding underframe)
Fire on electric loco (ECS and berthed) ‐ electrical (excluding underframe)
Fire on electric loco (ECS and berthed) ‐ current collection/return problems
Fire on electric hauled stock ECS ‐ electrical (excluding underframe)
Fire on FT or PCLS diesel loco ‐ arson/vandalism
Fire on FT or PCLS diesel loco ‐ other (excluding underframe)
Fire on diesel hauled stock ECS ‐ other underframe
Fire on electric loco (ECS and berthed) ‐ underframe other
Fire on electric hauled stock ECS ‐ other underframe
Fire on diesel hauled stock ECS ‐ other (excluding underframe)
Fire on electric loco (ECS and berthed) ‐ other (excluding underframe)
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
ECS trn km
ECS trn km
Frt & PCLS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
1.95E‐09
1.95E‐09
3.21E‐10
1.04E‐09
9.75E‐10
9.75E‐10
9.75E‐10
9.75E‐10
9.75E‐10
9.75E‐10
9.75E‐10
9.75E‐10
9.75E‐10
9.75E‐10
9.75E‐10
7.71E‐10
6.70E‐10
6.70E‐10
4.26E‐10
0.0436
0.0436
0.0149
0.0234
0.0218
0.0218
0.0218
0.0218
0.0218
0.0218
0.0218
0.0218
0.0218
0.0218
0.0218
0.0173
0.0150
0.0150
0.0095
3.24E‐06
3.24E‐06
2.09E‐06
1.74E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.62E‐06
1.28E‐06
1.11E‐06
1.11E‐06
7.08E‐07
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.00%
0.00%
0.00%
D
D
D
E
D
D
D
D
D
D
D
D
D
D
D
E
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
ECS trn km
4.26E‐10
0.0095
7.08E‐07
0.00%
E
‐
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
Frt & PCLS trn km
Frt & PCLS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
3.79E‐10
3.77E‐10
3.77E‐10
3.55E‐10
3.55E‐10
3.14E‐10
2.67E‐10
2.59E‐10
4.81E‐11
4.81E‐11
1.55E‐10
1.37E‐10
1.37E‐10
9.25E‐11
8.19E‐11
0.0085
0.0084
0.0084
0.0079
0.0079
0.0070
0.0060
0.0058
0.0022
0.0022
0.0035
0.0031
0.0031
0.0021
0.0018
6.30E‐07
6.27E‐07
6.27E‐07
5.90E‐07
5.90E‐07
5.22E‐07
4.44E‐07
4.31E‐07
3.13E‐07
3.13E‐07
2.57E‐07
2.28E‐07
2.28E‐07
1.54E‐07
1.36E‐07
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
E
D
E
D
D
E
E
D
E
E
E
E
E
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
60
Table B1
National frequency
Hazardous event code
Precursor code
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20A
HET‐20 POS
HET‐20 POS
HET‐20 POS
HET‐20 POS
PFECSOT‐‐E
Fire on electric hauled stock ECS ‐ other (excluding underframe)
PFLCDEAX‐E
Fire on diesel loco (including ECS/berthed) ‐ axle/bearing failure
PFDCSAX‐‐E
Fire on diesel hauled stock ECS ‐ axle/bearing failure
PFLCELAX‐E
Fire on electric loco (ECS and berthed) ‐ axle/bearing failure
PFECSAX‐‐E
Fire on electric hauled stock ECS ‐ axle/bearing failure
PFLCELOU‐E
Fire on FT or PCLS electric loco ‐ other underframe
PFLCELOTFE
Fire on FT or PCLS electric loco ‐ other (excluding underframe)
PFLCELHEFE
Fire on FT or PCLS electric loco ‐ human error/carelessness
PFLCELAVFE
Fire on FT or PCLS electric loco ‐ arson/vandalism
PFLCELAXFE
Fire on FT or PCLS electric loco ‐ axle/bearing failure
PFLCEDEN‐E
Fire on FT or PCLS electric loco ‐ engine (including oil/diesel leaks)
PFECSHE‐E
Fire on EMU (ECS/berthed) ‐ human error/carelessness
PFOTMTM‐‐E
Fire on OTM outside possession ‐ traction motor fires
PFOTMOT‐‐E
Fire on OTM outside possession ‐ other (excluding underframe)
PFOTMBS‐‐E
Fire on OTM outside possession ‐ brakes (sparking or dragging)
PFOTMCAR‐E
Fire on OTM outside possession ‐ cargo
PFOTMAV‐‐E
Fire on OTM outside possession ‐ arson/vandalism
PFDCSDMUCE
Fire on DMU ECS/berthed ‐ human error/carelessness
PFDCSHSTAE
Fire on HST/DEMU ECS ‐ arson/vandalism
PFDCSHSTLE
Fire on HST/DEMU ECS ‐ human error/carelessness
PFLCDEHE‐E
Fire on diesel loco (including ECS/berthed) ‐ human error/carelessness
PFDCSAV‐‐E
Fire on diesel hauled stock ECS ‐ arson/vandalism
PFLCDEAV‐E
Fire on diesel loco (including ECS/berthed) ‐ arson/vandalism
PFDCSHE‐‐E
Fire on diesel hauled stock ECS ‐ human error/carelessness
PFECSAV‐‐E
Fire on electric hauled stock ECS ‐ arson/vandalism
PFLCELHE‐E
Fire on electric loco (ECS and berthed) ‐ human error/carelessness
PFLCELAV‐E
Fire on electric loco (ECS and berthed) ‐ arson/vandalism
Fire on OTP inside possession
OT08I59
Defect on OTP leading to Fire on OTP ‐ Inside Possession
OT08I54
Vandalism leading to Fire on OTP ‐ Inside Possession
OT08I55
Unsafe system of work employed by workers leading to Fire on OTP ‐ Inside Possession
Cause precursor description
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
Frt & PCLS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
ECS trn km
8.19E‐11
6.84E‐11
6.84E‐11
6.06E‐11
6.06E‐11
5.73E‐12
5.73E‐12
5.73E‐12
5.73E‐12
5.73E‐12
5.73E‐12
2.18E‐11
1.98E‐11
1.98E‐11
1.98E‐11
1.98E‐11
1.98E‐11
1.40E‐11
6.65E‐12
6.65E‐12
1.18E‐12
1.18E‐12
1.18E‐12
1.18E‐12
1.04E‐12
1.04E‐12
1.04E‐12
OTP hrs
OTP hrs
OTP hrs
1.07E‐06
1.42E‐08
1.10E‐08
0.0018
0.0015
0.0015
0.0014
0.0014
2.67E‐04
2.67E‐04
2.67E‐04
2.67E‐04
2.67E‐04
2.67E‐04
4.88E‐04
4.44E‐04
4.44E‐04
4.44E‐04
4.44E‐04
4.44E‐04
3.13E‐04
1.49E‐04
1.49E‐04
2.63E‐05
2.63E‐05
2.63E‐05
2.63E‐05
2.33E‐05
2.33E‐05
2.33E‐05
2.333
2.280
0.0303
0.0233
1.36E‐07
1.14E‐07
1.14E‐07
1.01E‐07
1.01E‐07
3.73E‐08
3.73E‐08
3.73E‐08
3.73E‐08
3.73E‐08
3.73E‐08
3.63E‐08
3.30E‐08
3.30E‐08
3.30E‐08
3.30E‐08
3.30E‐08
2.33E‐08
1.11E‐08
1.11E‐08
1.96E‐09
1.96E‐09
1.96E‐09
1.96E‐09
1.73E‐09
1.73E‐09
1.73E‐09
0.0072
0.0071
9.40E‐05
7.23E‐05
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
31.49%
30.76%
0.41%
0.31%
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
D
E
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
61
Table B1
National frequency
Hazardous event code
HET‐21
HET‐21A
HET‐21A
HET‐21 POS
HET‐21 POS
HET‐21 POS
Precursor code
Cause precursor description
Train crushed by structural collapse or large object (not at a station)
Train crushed by structural collapse or large object outside possession (not at station)
Train crushed by significant railway structural collapse or large object (bridge, tunnel, RSTRUCT‐‐‐F
building, retaining wall, road vehicle)
OTP crushed by structural collapse or large object inside possession (not at station)
OT11I32
Infrastructure Defect OTP Crushed by Structural Collapse ‐ Inside Possession
Unsafe System of Work Employed by Workers OTP Crushed by Structural Collapse ‐ Inside OT11I54
Possession
HET‐22
HET‐22
Train crushed by structural collapse or large object (at a station)
RSTATSTR‐F
Train crushed by structural collapse at station
HET‐23
HET‐23
Explosion on passenger train
PEXPLOS‐PF
Spontaneous explosion on a passenger train
HET‐24
HET‐24
HET‐24
Explosion on freight train
FEXPLOSHFF
Spontaneous explosion on a freight train (hazardous freight)
FEXPLOS‐FF
Spontaneous explosion on a freight train (non‐hazardous freight)
HET‐25
HET‐25A
HET‐25A
HET‐25A
HET‐25A
HET‐25A
HET‐25B
HET‐25B
HET‐25B
HET‐25B
HET‐25B
Passenger train division (not leading to collision)
Passenger train division (not leading to collision): in station
USNOTESTPE
Division in station ‐ cause not established
USCOUERRPH
Division in station due to coupling error
USDFCOUPPF
Division in station due to defective coupling
USDRVBUTPH
Division in station due to driver pressing the uncoupling button in error
Passenger train division (not leading to collision): in running
URNOTESTPE
Division in running ‐ cause not established
URDFCOUPPF
Division in running due to defective coupling
URDRVBUTPH
Division in running due to driver pressing the uncoupling button in error
URCOUERRPH
Division in running due to coupling error
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
6.00E‐04
5.91E‐04
0.0080
0.0080
100.00%
99.94%
‐
‐
Tot trn km
1.06E‐12
5.91E‐04
0.0080
99.94%
D
‐
OTP hrs
2.96E‐12
8.40E‐06
6.30E‐06
4.82E‐06
3.62E‐06
0.06%
0.05%
E
‐
‐
OTP hrs
9.87E‐13
2.10E‐06
1.21E‐06
0.02%
E
‐
Stations
3.95E‐06
0.0100
0.0100
0.0441
0.0441
100.00%
100.00%
E
‐
‐
Pass trn km
4.10E‐11
0.0200
0.0200
0.0049
0.0049
100.00%
100.00%
E
‐
‐
Non‐pass trn km
Non‐pass trn km
1.45E‐10
8.19E‐11
0.0156
0.0100
0.0056
0.0686
0.0681
5.67E‐04
100.00%
99.17%
0.83%
E
E
‐
‐
‐
12.20
7.600
4.800
1.200
1.000
0.6000
4.600
3.200
0.6000
0.6000
0.2000
0.0079
0.0038
0.0024
5.95E‐04
4.96E‐04
2.98E‐04
0.0041
0.0029
5.41E‐04
5.41E‐04
1.80E‐04
100.00%
47.61%
30.07%
7.52%
6.26%
3.76%
52.39%
36.45%
6.83%
6.83%
2.28%
Pass trn km
Pass trn km
Pass trn km
Pass trn km
9.83E‐09
2.46E‐09
2.05E‐09
1.23E‐09
Pass trn km
Pass trn km
Pass trn km
Pass trn km
6.55E‐09
1.23E‐09
1.23E‐09
4.10E‐10
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
62
Table B1
National frequency
Hazardous event code
HET‐26
HET‐26A
HET‐26A
HET‐26A
HET‐26A
HET‐26A
HET‐26B
HET‐26B
HET‐26B
HET‐26B
HET‐26B
Precursor code
Cause precursor description
Collision between a failed train and an assisting train
Collision between a failed passenger train and an assisting train
Low adhesion due to leaves leading to an assisting train collision with a failed passenger UASSILEPE
train
UASSIDBPE
Defective brakes leading to an assisting train collision with a failed passenger train
Low adhesion due to rail contamination leading to an assisting train collision with a failed UASSIRCPE
passenger train
Failed train not properly secured leading to an assisting train collision with a failed UASSISEPE
passenger train (runaway)
Collision between a failed non‐passenger train and an assisting train
Low adhesion due to leaves leading to an assisting train collision with a failed non‐
UASSILEFE
passenger train
Failed train not properly secured leading to an assisting train collision with a failed non‐
UASSISEFE
passenger train (runaway)
UASSIDBFE
Defective brakes leading to an assisting train collision with a failed non‐passenger train
Low adhesion due to rail contamination leading to an assisting train collision with a failed UASSIRCFE
non‐passenger train
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.4167
0.0833
0.0106
0.0026
100.00%
24.08%
‐
‐
Pass trn km
6.83E‐11
0.0333
0.0010
9.63%
D
‐
Pass trn km
3.41E‐11
0.0167
5.12E‐04
4.82%
D
‐
Pass trn km
3.41E‐11
0.0167
5.12E‐04
4.82%
D
‐
Pass trn km
3.41E‐11
0.0167
5.12E‐04
4.82%
D
‐
0.3333
0.0081
75.92%
‐
Non‐pass trn km
1.93E‐09
0.1333
0.0032
30.37%
D
‐
Non‐pass trn km
9.67E‐10
0.0667
0.0016
15.18%
D
‐
Non‐pass trn km
9.67E‐10
0.0667
0.0016
15.18%
D
‐
Non‐pass trn km
9.67E‐10
0.0667
0.0016
15.18%
D
‐
63
This page has been intentionally left blank
Version 7.1 — August 2011
64
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐01
HEM‐01A
HEM‐01A
HEM‐01B
HEM‐01B
Passenger injury during evacuation following stopped train (not at a platform)
Passenger injury during evacuation following stopped train (controlled evacuation)
PEVCCNT‐‐H
Passenger injury during controlled evacuation following a stopped train
Passenger injury during evacuation following stopped train (uncontrolled evacuation)
PEVCUCNT‐H
Passenger injury during uncontrolled evacuation following a stopped train
HEM‐03
HEM‐03
Passenger struck while leaning out of train (train in running)
PPLEANT‐‐H
Passenger struck while leaning out of train (train in running)
HEM‐05
HEM‐05A
HEM‐05A
HEM‐05A
HEM‐05A
HEM‐05B
HEM‐05B
HEM‐05B
HEM‐05B
HEM‐06
HEM‐06
HEM‐06
HEM‐06
Train door closes on passenger
Train door closes on passenger (slam‐door)
PSLALIGH‐H
Train door closes on passenger (slam door stock) whilst alighting
PSLBOARD‐H
Train door closes on passenger (slam door stock) whilst boarding
PSLOTHER‐H
Train door closes on passenger (slam door stock) other/unknown
Train door closes on passenger (non‐slam door)
PPOBOARD‐H
Train door closes on passenger (non‐slam door stock) whilst boarding
PPOALIGH‐H
Train door closes on passenger (non‐slam door stock) whilst alighting
PPOOTHER‐H
Train door closes on passenger (non‐slam door stock) other/unknown
Passenger fall between stationary train and platform
PFALLALIUH
Passenger fall between a stationary train and platform whilst alighting
PFALLBOAUH
Passenger fall between a stationary train and platform whilst boarding
PFALLOTHUH
Passenger fall between a stationary train and platform ‐ other
HEM‐07
HEM‐07
Cause precursor description
Normaliser
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass jour
1.66E‐09
Pass jour
1.29E‐10
2.216
2.057
2.057
0.1593
0.1593
0.0165
0.0123
0.0123
0.0042
0.0042
100.00%
74.33%
74.33%
25.67%
25.67%
D
‐
‐
‐
‐
‐
Pass jour
1.04E‐09
1.283
1.283
0.2014
0.2014
100.00%
100.00%
D
‐
‐
0.6172
0.0536
0.0220
0.0203
0.0113
0.5636
0.2793
0.2267
0.0576
1.479
0.8734
0.4085
0.1971
100.00%
8.69%
3.56%
3.29%
1.83%
91.31%
45.25%
36.73%
9.33%
100.00%
59.05%
27.62%
13.33%
Pass jour
Pass jour
Pass jour
5.39E‐09
4.98E‐09
2.77E‐09
Pass jour
Pass jour
Pass jour
1.34E‐07
1.09E‐07
2.77E‐08
Pass jour
Pass jour
Pass jour
8.49E‐08
1.34E‐07
1.25E‐08
351.7
16.25
6.669
6.156
3.428
335.4
166.2
134.9
34.28
286.7
105.0
166.3
15.41
Passenger fall from train in service onto track (no electric shock nor struck by train) PTSGFALL‐H
Passenger fall from train in service onto track (no electric shock nor struck by train) Pass jour
3.55E‐10
0.4394
0.4394
0.0189
0.0189
HEM‐08
HEM‐08
HEM‐08
Passenger fall from platform and struck by train
PPLLFALL‐H
Passenger fall from platform and struck by train under the influence
PPLGFALL‐H
Passenger fall from platform and struck by train ‐ general causes
Pass jour
Pass jour
2.59E‐09
1.90E‐09
5.560
3.208
2.352
HEM‐09
HEM‐09A
HEM‐09A
HEM‐09A
HEM‐09A
HEM‐09A
Passenger injury while boarding/alighting a train (platform side)
Passenger injury while alighting from a train (platform side)
PTASFALL‐H
Passenger injury while alighting from a stationary train
PTALFALL‐H
Passenger injury while alighting from train under the influence
PTAMFALL‐H
Passenger injury while alighting from a moving train
PTALLTSP‐H
Passenger injury while alighting from a train to the cess (on the platform side)
2.16E‐07
3.35E‐08
2.22E‐09
1.39E‐09
592.2
313.3
267.4
41.48
2.742
1.714
Version 7.1 — August 2011
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
Pass jour
Pass jour
Pass jour
Pass jour
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
100.00%
100.00%
D
‐
‐
2.004
1.511
0.4932
100.00%
75.39%
24.61%
D
D
‐
‐
‐
3.243
2.173
1.854
0.2877
0.0190
0.0119
100.00%
67.00%
57.18%
8.87%
0.59%
0.37%
D
D
D
D
‐
‐
‐
‐
‐
‐
D
D
D
D
D
D
65
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐09B
HEM‐09B
HEM‐09B
HEM‐09B
Passenger injury while boarding a train (platform side)
PTBSFALL‐H
Passenger injury while boarding a stationary train
PTBLFALL‐H
Passenger injury while boarding a train under the influence
PTBMFALL‐H
Passenger injury while boarding a moving train
HEM‐10
HEM‐10A
HEM‐10A
HEM‐10B
HEM‐10B
HEM‐10 POS
HEM‐10 POS
Passenger struck by / contact with moving train while on platform
Passenger struck by / contact with moving train due to being too close to platform edge
PPLSTR‐‐‐H
Passenger struck by / contact with moving train due to being too close to platform edge
Passenger injury due to being hit by train door or out of gauge item while on platform
PPLSTD‐‐‐E
Passenger injury due to being hit by train door or out of gauge item while on platform
Passenger on platform struck by / contact with train ‐ inside possession
PSTROTP‐OE
Passenger on platform struck by / contact with moving train inside possession
HEM‐11
HEM‐11A
Passenger struck/crushed by train while crossing the track at or near a station on a crossing
Passenger struck/crushed by train on MCB + CCTV level crossing adjacent to station
Passenger struck/crushed by train on MCB + CCTV adjacent to station ‐ user violation: climbs PCCTVCLIMH
over barrier/cattle grids
Passenger struck/crushed by train on MCB + CCTV adjacent to station ‐ proper use: user PCCTVTRAPH
trapped
Passenger struck/crushed by train on MCB + CCTV adjacent to station ‐ proper use: train PCCTVTRAIH
unexpected
Passenger struck/crushed by train on MCB level crossing adjacent to station
Passenger struck/crushed by train on MCB adjacent to station ‐ user violation: climbs over PMCB‐CLIMH
barrier/cattle grids
Passenger struck/crushed by train on MCB adjacent to station ‐ proper use: train PMCB‐TRAIH
unexpected
Passenger struck/crushed by train on MCG level crossing adjacent to station
Passenger struck/crushed by train on MCG adjacent to station ‐ user violation: climbs over PMCG‐CLIMH
barrier/cattle grids
Passenger struck/crushed by train on MCG adjacent to station ‐ proper use: train PMCG‐TRAIH
unexpected
HEM‐11A
HEM‐11A
HEM‐11A
HEM‐11B
HEM‐11B
HEM‐11B
HEM‐11C
HEM‐11C
HEM‐11C
Cause precursor description
Version 7.1 — August 2011
Normaliser
Pass jour
Pass jour
Pass jour
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
2.17E‐07
8.04E‐09
6.92E‐10
278.9
268.1
9.941
0.8554
1.070
1.029
0.0381
0.0033
33.00%
31.72%
1.18%
0.10%
9.841
9.624
9.624
0.2139
0.2139
0.0039
0.0039
1.568
1.565
1.565
0.0020
0.0020
2.97E‐04
2.97E‐04
100.00%
99.85%
99.85%
0.13%
0.13%
0.02%
0.02%
0.8734
0.1561
0.7074
0.1264
100.00%
17.87%
Pass jour
7.78E‐09
Pass jour
1.73E‐10
OTP hrs
1.82E‐09
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Pass jour
8.97E‐11
0.1109
0.0899
12.70%
D
‐
Pass jour
2.06E‐11
0.0255
0.0206
2.92%
D
‐
Pass jour
1.59E‐11
0.0196
0.0159
2.25%
D
‐
0.1024
0.0829
11.73%
‐
Pass jour
7.42E‐11
0.0918
0.0743
10.51%
D
‐
Pass jour
8.61E‐12
0.0107
0.0086
1.22%
D
‐
0.0214
0.0173
2.45%
‐
Pass jour
1.55E‐11
0.0192
0.0155
2.20%
D
‐
Pass jour
1.80E‐12
0.0022
0.0018
0.26%
D
‐
66
Table B1
National frequency
Hazardous event code
HEM‐11D
HEM‐11D
HEM‐11D
HEM‐11D
HEM‐11D
HEM‐11D
HEM‐11D
HEM‐11D
HEM‐11D
HEM‐11E
HEM‐11E
HEM‐11E
HEM‐11E
HEM‐11E
HEM‐11E
HEM‐11E
HEM‐11E
HEM‐11E
Precursor code
Cause precursor description
Passenger struck/crushed by train on ABCL level crossing adjacent to station
Passenger struck/crushed by train on ABCL adjacent to station ‐ user error: second train PABCL2TRAH
coming
Passenger struck/crushed by train on ABCL adjacent to station ‐ proper use: slipped, tripped, PABCLFALLH
fell or snagged on crossing
Passenger struck/crushed by train on ABCL adjacent to station ‐ user violation: ignores PABCLFSLLH
lights/barriers
Passenger struck/crushed by train on ABCL adjacent to station ‐ proper use: train PABCLMALFF
unexpected
Passenger struck/crushed by train on ABCL adjacent to station ‐ user error: PABCLDOG‐H
distracted/forced by dog
Passenger struck/crushed by train on ABCL adjacent to station ‐ user error: unaware of PABCLUNAWH
crossing
Passenger struck/crushed by train on ABCL adjacent to station ‐ proper use: slow PABCLSLOWH
moving/short warning
Passenger struck/crushed by train on ABCL adjacent to station ‐ proper use: road traffic PABCLRTA‐H
accident
Passenger struck/crushed by train on AHB level crossing adjacent to station
Passenger struck/crushed by train on AHB adjacent to station ‐ user error: second train PAHB‐2TRAH
coming
Passenger struck/crushed by train on AHB adjacent to station ‐ proper use: slipped, tripped, PAHB‐FALLH
fell or snagged on crossing
Passenger struck/crushed by train on AHB adjacent to station ‐ user violation: ignores PAHB‐WALKH
lights/barriers
Passenger struck/crushed by train on AHB adjacent to station ‐ proper use: slow PAHB‐SLOWH
moving/short warning
PAHB‐MALFF
Passenger struck/crushed by train on AHB adjacent to station ‐ proper use: train unexpected
Passenger struck/crushed by train on AHB adjacent to station ‐ user error: distracted/forced PAHB‐DOG‐H
by dog
Passenger struck/crushed by train on AHB adjacent to station ‐ user error: unaware of PAHB‐UNAWH
crossing
Passenger struck/crushed by train on AHB adjacent to station ‐ proper use: road traffic PAHB‐RTA‐H
accident
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0606
0.0491
6.94%
‐
Pass jour
4.11E‐11
0.0508
0.0411
5.81%
D
‐
Pass jour
6.74E‐12
0.0083
0.0068
0.95%
D
‐
Pass jour
7.78E‐13
9.62E‐04
7.79E‐04
0.11%
D
‐
Pass jour
1.36E‐13
1.69E‐04
1.37E‐04
0.02%
D
‐
Pass jour
1.27E‐13
1.57E‐04
1.27E‐04
0.02%
D
‐
Pass jour
1.12E‐13
1.38E‐04
1.12E‐04
0.02%
D
‐
Pass jour
6.83E‐14
8.45E‐05
6.84E‐05
0.01%
D
‐
Pass jour
9.96E‐16
1.23E‐06
9.98E‐07
0.00%
D
‐
0.0665
0.0538
7.61%
‐
Pass jour
4.45E‐11
0.0550
0.0446
6.30%
D
‐
Pass jour
7.92E‐12
0.0098
0.0079
1.12%
D
‐
Pass jour
1.21E‐12
0.0015
0.0012
0.17%
D
‐
Pass jour
5.16E‐14
6.38E‐05
5.17E‐05
0.01%
D
‐
Pass jour
2.12E‐14
2.62E‐05
2.12E‐05
0.00%
D
‐
Pass jour
1.97E‐14
2.44E‐05
1.97E‐05
0.00%
D
‐
Pass jour
1.74E‐14
2.15E‐05
1.75E‐05
0.00%
D
‐
Pass jour
3.70E‐15
4.58E‐06
3.71E‐06
0.00%
D
‐
67
Table B1
National frequency
Hazardous event code
HEM‐11F
HEM‐11F
HEM‐11F
HEM‐11F
HEM‐11F
HEM‐11F
HEM‐11F
HEM‐11F
HEM‐11F
HEM‐11H
HEM‐11H
HEM‐11H
HEM‐11H
HEM‐11H
HEM‐11H
HEM‐11H
HEM‐11H
HEM‐11H
HEM‐11H
Precursor code
Cause precursor description
Passenger struck/crushed by train on AOCL level crossing adjacent to station
Passenger struck/crushed by train on AOCL adjacent to station ‐ user error: second train PAOCL2TRAH
coming
Passenger struck/crushed by train on AOCL adjacent to station ‐ proper use: slipped, PAOCLFALLH
tripped, fell or snagged on crossing
PAOCLFSLLH
Passenger struck/crushed by train on AOCL adjacent to station ‐ user violation: ignores lights
Passenger struck/crushed by train on AOCL adjacent to station ‐ proper use: train PAOCLMALFF
unexpected
Passenger struck/crushed by train on AOCL adjacent to station ‐ user error: PAOCLDOG‐H
distracted/forced by dog
Passenger struck/crushed by train on AOCL adjacent to station ‐ user error: unaware of PAOCLUNAWH
crossing
Passenger struck/crushed by train on AOCL adjacent to station ‐ proper use: slow PAOCLSLOWH
moving/short warning
Passenger struck/crushed by train on AOCL adjacent to station ‐ proper use: road traffic PAOCLRTA‐H
accident
Passenger struck/crushed by train on UWC + T level crossing adjacent to station
PUWCTSIGHH
Passenger struck/crushed by train on UWC + T adjacent to station ‐ user error: poor sighting
PUWCT2TRAH
Passenger struck/crushed by train on UWC + T adjacent to station ‐ user error: second train
Passenger struck/crushed by train on UWC + T adjacent to station ‐ proper use: slipped, PUWCTFALLH
tripped, fell or snagged on crossing
Passenger struck/crushed by train on UWC + T adjacent to station ‐ user error: fails to stop, PUWCTFSLLH
look and listen
Passenger struck/crushed by train on UWC + T adjacent to station ‐ user violation: nips PUWCTNIP‐H
across in front of train
Passenger struck/crushed by train on UWC + T adjacent to station ‐ user error: PUWCTDOG‐H
distracted/forced by dog
Passenger struck/crushed by train on UWC + T adjacent to station ‐ user error: unaware of PUWCTUNAWH
crossing
Passenger struck/crushed by train on UWC + T adjacent to station ‐ proper use: signaller PUWCTTRAIH
error
Passenger struck/crushed by train on UWC + T adjacent to station ‐ proper use: road traffic PUWCTRTA‐H
accident
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0062
0.0050
0.71%
‐
Pass jour
4.15E‐12
0.0051
0.0042
0.59%
D
‐
Pass jour
7.38E‐13
9.12E‐04
7.39E‐04
0.10%
D
‐
Pass jour
1.12E‐13
1.38E‐04
1.12E‐04
0.02%
D
‐
Pass jour
3.55E‐15
4.39E‐06
3.56E‐06
0.00%
D
‐
Pass jour
3.30E‐15
4.08E‐06
3.30E‐06
0.00%
D
‐
Pass jour
2.92E‐15
3.61E‐06
2.92E‐06
0.00%
D
‐
Pass jour
1.78E‐15
2.20E‐06
1.78E‐06
0.00%
D
‐
Pass jour
1.89E‐17
2.34E‐08
1.90E‐08
0.00%
D
‐
Pass jour
Pass jour
8.84E‐12
8.84E‐12
0.0241
0.0109
0.0109
0.0195
0.0089
0.0089
2.76%
1.25%
1.25%
D
D
‐
‐
‐
Pass jour
1.55E‐12
0.0019
0.0016
0.22%
D
‐
Pass jour
1.38E‐13
1.70E‐04
1.38E‐04
0.02%
D
‐
Pass jour
8.54E‐14
1.06E‐04
8.55E‐05
0.01%
D
‐
Pass jour
3.44E‐14
4.25E‐05
3.44E‐05
0.00%
D
‐
Pass jour
2.11E‐15
2.61E‐06
2.11E‐06
0.00%
D
‐
Pass jour
2.52E‐16
3.11E‐07
2.52E‐07
0.00%
D
‐
Pass jour
2.81E‐17
3.48E‐08
2.82E‐08
0.00%
D
‐
68
Table B1
National frequency
Hazardous event code
HEM‐11I
HEM‐11I
HEM‐11I
HEM‐11I
HEM‐11I
HEM‐11I
HEM‐11I
HEM‐11I
HEM‐11I
HEM‐11K
HEM‐11K
HEM‐11K
HEM‐11K
HEM‐11K
HEM‐11K
HEM‐11K
HEM‐11K
HEM‐11L
HEM‐11L
HEM‐11L
HEM‐11L
HEM‐11L
Precursor code
Cause precursor description
Passenger struck/crushed by train on UWC level crossing adjacent to station
PUWC‐SIGHH
Passenger struck/crushed by train on UWC adjacent to station ‐ user error: poor sighting
PUWC‐2TRAH
Passenger struck/crushed by train on UWC adjacent to station ‐ user error: second train
Passenger struck/crushed by train on UWC adjacent to station ‐ proper use: slipped, tripped, PUWC‐FALLJ
fell or snagged on crossing
Passenger struck/crushed by train on UWC adjacent to station ‐ user error: PUWC‐DOG‐H
distracted/forced by dog
Passenger struck/crushed by train on UWC adjacent to station ‐ user error: fails to stop, look PUWC‐FSLLH
and listen
Passenger struck/crushed by train on UWC adjacent to station ‐ user violation: nips across in PUWC‐NIP‐H
front of train
Passenger struck/crushed by train on UWC adjacent to station ‐ user error: unaware of PUWC‐UNAWH
crossing
Passenger struck/crushed by train on UWC adjacent to station ‐ proper use: road traffic PUWC‐RTA‐H
accident
Passenger struck/crushed by train on FP + MWL crossing adjacent to station
PFPCM2TRAH
Passenger struck/crushed by train on FP MWL adjacent to station ‐ user error: second train
Passenger struck/crushed by train on FP MWL adjacent to station ‐ proper use: slipped, PFPCMFALLH
tripped, fell or snagged on crossing
Passenger struck/crushed by train on FP MWL adjacent to station ‐ user violation: ignores PFPCMIGRLH
lights
Passenger struck/crushed by train on FP MWL adjacent to station ‐ user error: PFPCMDOG‐H
distracted/forced by dog
Passenger struck/crushed by train on FP MWL adjacent to station ‐ proper use: slow PFPCMSLOWH
moving/short warning
Passenger struck/crushed by train on FP MWL adjacent to station ‐ proper use: train PFPCMTRAIH
unexpected
Passenger struck/crushed by train on FP MWL adjacent to station ‐ user error: unaware of PFPCMUNAWH
crossing
Passenger struck/crushed by train on FP crossing adjacent to station
PFPC‐SIGHH
Passenger struck/crushed by train on FP adjacent to station ‐ user error: poor sighting
PFPC‐2TRAH
Passenger struck/crushed by train on FP adjacent to station ‐ user error: second train
Passenger struck/crushed by train on FP adjacent to station ‐ user error: slipped, tripped, fell PFPC‐FALLH
or snagged on crossing
Passenger struck/crushed by train on FP adjacent to station ‐ user error: fails to stop, look PFPC‐FSLLH
and listen
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass jour
Pass jour
1.26E‐14
1.26E‐14
3.43E‐05
1.55E‐05
1.55E‐05
2.78E‐05
1.26E‐05
1.26E‐05
0.00%
0.00%
0.00%
D
D
‐
‐
‐
Pass jour
2.21E‐15
2.73E‐06
2.21E‐06
0.00%
D
‐
Pass jour
1.93E‐16
2.39E‐07
1.94E‐07
0.00%
D
‐
Pass jour
9.67E‐17
1.20E‐07
9.69E‐08
0.00%
D
‐
Pass jour
7.28E‐17
9.00E‐08
7.29E‐08
0.00%
D
‐
Pass jour
5.86E‐18
7.25E‐09
5.90E‐09
0.00%
D
‐
Pass jour
8.43E‐20
1.04E‐10
1.00E‐10
0.00%
D
‐
Pass jour
1.35E‐11
0.0238
0.0166
0.0193
0.0135
2.72%
1.91%
D
‐
‐
Pass jour
4.94E‐12
0.0061
0.0050
0.70%
D
‐
Pass jour
5.35E‐13
6.61E‐04
5.36E‐04
0.08%
D
‐
Pass jour
1.60E‐13
1.97E‐04
1.60E‐04
0.02%
D
‐
Pass jour
9.75E‐14
1.21E‐04
9.77E‐05
0.01%
D
‐
Pass jour
1.95E‐14
2.41E‐05
1.95E‐05
0.00%
D
‐
Pass jour
1.60E‐14
1.98E‐05
1.60E‐05
0.00%
D
‐
Pass jour
Pass jour
1.94E‐11
1.94E‐11
0.0528
0.0240
0.0240
0.0428
0.0194
0.0194
6.05%
2.74%
2.74%
D
D
‐
‐
‐
Pass jour
3.40E‐12
0.0042
0.0034
0.48%
D
‐
Pass jour
2.74E‐13
3.39E‐04
2.74E‐04
0.04%
D
‐
69
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐11L
PFPC‐NIP‐H
HEM‐11L
HEM‐11L
HEM‐11M
HEM‐11M
HEM‐11M
HEM‐11M
HEM‐11M
HEM‐11M
HEM‐11M
HEM‐11M
HEM‐11N
HEM‐11N
HEM‐11N
HEM‐11N
HEM‐11N
HEM‐11N
HEM‐11N
HEM‐11N
Cause precursor description
Passenger struck/crushed by train on FP adjacent to station ‐ user violation: nips across in front of train
Passenger struck/crushed by train on FP adjacent to station ‐ user error: distracted/forced PFPC‐DOG‐H
by dog
Passenger struck/crushed by train on FP adjacent to station ‐ user error: unaware of PFPC‐UNAWH
crossing
Passenger struck/crushed by train on station pedestrian crossing with MWL
Passenger struck/crushed by train on station pedestrian crossing with MWL ‐ user error: PSPWL2TRAH
second train coming
Passenger struck/crushed by train on station pedestrian crossing with MWL ‐ proper use: PSPWLFALLH
slipped, tripped, fell or snagged on crossing
Passenger struck/crushed by train on station pedestrian crossing with MWL ‐ user violation: PSPWLIGRLH
ignores lights
Passenger struck/crushed by train on station pedestrian crossing with MWL ‐ user error: PSPWLDOG‐H
distracted/forced by dog
Passenger struck/crushed by train on station pedestrian crossing with MWL ‐ proper use: PSPWLSLOWH
slow moving/short warning
Passenger struck/crushed by train on station pedestrian crossing with MWL ‐ proper use: PSPWLMALFF
train undetected/lights fail
Passenger struck/crushed by train on station pedestrian crossing with MWL ‐ user error: PSPWLUNAWH
unaware of crossing
Passenger struck/crushed by train on station pedestrian crossing (no lights)
Passenger struck/crushed by train on station pedestrian crossing (no lights) ‐ user error: PSPC‐SIGHH
poor sighting
Passenger struck/crushed by train on station pedestrian crossing (no lights) ‐ user error: PSPC‐2TRAH
second train coming
Passenger struck/crushed by train on station pedestrian crossing (no lights) ‐ proper use: PSPC‐FALLH
slipped, tripped, fell or snagged on crossing
Passenger struck/crushed by train on station pedestrian crossing (no lights) ‐ user error: fails PSPC‐FSLLH
to stop, look and listen
Passenger struck/crushed by train on station pedestrian crossing (no lights) ‐ user violation: PSPC‐NIP‐H
nips across in front of train
Passenger struck/crushed by train on station pedestrian crossing (no lights)‐ user error: PSPC‐DOGH
distracted/forced by dog
Passenger struck/crushed by train on station pedestrian crossing (no lights) ‐ user error: PSPC‐UNAWH
unaware of crossing Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass jour
1.84E‐13
2.27E‐04
1.84E‐04
0.03%
D
‐
Pass jour
7.70E‐14
9.53E‐05
7.72E‐05
0.01%
D
‐
Pass jour
3.42E‐14
4.23E‐05
3.43E‐05
0.00%
D
‐
0.1174
0.0951
13.45%
‐
Pass jour
7.62E‐11
0.0943
0.0764
10.80%
D
‐
Pass jour
1.40E‐11
0.0173
0.0140
1.98%
D
‐
Pass jour
3.03E‐12
0.0037
0.0030
0.43%
D
‐
Pass jour
9.04E‐13
0.0011
9.06E‐04
0.13%
D
‐
Pass jour
5.53E‐13
6.84E‐04
5.54E‐04
0.08%
D
‐
Pass jour
1.10E‐13
1.36E‐04
1.10E‐04
0.02%
D
‐
Pass jour
9.06E‐14
1.12E‐04
9.08E‐05
0.01%
D
‐
0.1673
0.1355
19.15%
‐
Pass jour
6.15E‐11
0.0760
0.0616
8.70%
D
‐
Pass jour
6.15E‐11
0.0760
0.0616
8.70%
D
‐
Pass jour
1.05E‐11
0.0130
0.0105
1.49%
D
‐
Pass jour
8.69E‐13
0.0011
8.70E‐04
0.12%
D
‐
Pass jour
5.83E‐13
7.21E‐04
5.84E‐04
0.08%
D
‐
Pass jour
2.44E‐13
3.02E‐04
2.45E‐04
0.03%
D
‐
Pass jour
1.09E‐13
1.34E‐04
1.09E‐04
0.02%
D
‐
70
Table B1
National frequency
Hazardous event code
HEM‐11O
HEM‐11O
HEM‐11O
HEM‐11O
HEM‐11O
HEM‐11O
HEM‐11O
HEM‐11O
HEM‐11P
HEM‐11P
HEM‐11P
HEM‐11P
HEM‐11P
HEM‐11P
HEM‐11P
HEM‐11 POS
HEM‐11 POS
HEM‐12
HEM‐12A
HEM‐12A
HEM‐12A
HEM‐12A
HEM‐12A
Precursor code
Cause precursor description
Passenger struck/crushed by train on station barrow crossing with lights
Passenger struck/crushed by train on station barrow crossing with lights ‐ proper use: PSBWLFALLH
slipped, tripped, fell or snagged on crossing
Passenger struck/crushed by train on station barrow crossing with lights ‐ user violation: PSBWLUNACH
unauthorised use
Passenger struck/crushed by train on station barrow crossing with lights ‐ user error: PSBWLPASEH
general
PSBWLWFE‐H
Passenger struck/crushed by train on station barrow crossing with lights ‐ workforce error
Passenger struck/crushed by train on station barrow crossing with lights ‐ user error: PSBWLDOG‐H
distracted/forced by dog
Passenger struck/crushed by train on station barrow crossing with lights ‐ proper use: train PSBWLMALFF
undetected/lights fail
Passenger struck/crushed by train on station barrow crossing with lights ‐ user error: PSBWLUNAWH
unaware of crossing
Passenger struck/crushed by train on station barrow crossing (no lights)
Passenger struck/crushed by train on station barrow crossing (no lights) ‐ user violation: PSBC‐UNACH
unauthorised use
Passenger struck/crushed by train on station barrow crossing (no lights) ‐ proper use: PSBC‐FALLH
slipped, tripped, fell or snagged on crossing
PSBC‐PASEH
Passenger struck/crushed by train on station barrow crossing (no lights) ‐ user error: general
PSBC‐WFE‐H
Passenger struck/crushed by train on station barrow crossing (no lights) ‐ workforce error
Passenger struck/crushed by train on station barrow crossing (no lights) ‐ user error: PSBC‐DOGH
distracted/forced by dog
Passenger struck/crushed by train on station barrow crossing (no lights) ‐ user error: PSBC‐UNAWH
unaware of crossing
Passenger struck/crushed by train while crossing the track at or near a station on a crossing inside possession
Passenger struck/crushed by a train on a crossing at or near a station inside a possession ‐ PSTRXOTPOE
user error
MOP (trespasser) struck/crushed by train while on tracks at station MOP (trespasser) struck/crushed by train while on tracks at station KATRESTNNH
Adult trespasser struck while on track at station (not crossing tracks)
KATRESTN‐H
Adult trespasser struck while crossing track at station
JCTRESTNNH
Child trespasser struck while on track at station (not crossing tracks)
JCTRESTN‐H
Child trespasser struck while crossing track at station
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0048
0.0039
0.55%
‐
Pass jour
2.02E‐12
0.0025
0.0020
0.29%
D
‐
Pass jour
1.20E‐12
0.0015
0.0012
0.17%
D
‐
Pass jour
3.30E‐13
4.08E‐04
3.30E‐04
0.05%
D
‐
Pass jour
1.65E‐13
2.04E‐04
1.65E‐04
0.02%
D
‐
Pass jour
1.48E‐13
1.83E‐04
1.48E‐04
0.02%
D
‐
Pass jour
1.80E‐14
2.23E‐05
1.80E‐05
0.00%
D
‐
Pass jour
1.48E‐14
1.83E‐05
1.48E‐05
0.00%
D
‐
0.0693
0.0561
7.94%
‐
Pass jour
4.71E‐11
0.0583
0.0472
6.68%
D
‐
Pass jour
5.39E‐12
0.0067
0.0054
0.76%
D
‐
Pass jour
Pass jour
1.67E‐12
8.33E‐13
0.0021
0.0010
0.0017
8.35E‐04
0.24%
0.12%
D
D
‐
‐
Pass jour
7.03E‐13
8.69E‐04
7.04E‐04
0.10%
D
‐
Pass jour
3.12E‐13
3.86E‐04
3.13E‐04
0.04%
D
‐
5.98E‐04
4.84E‐04
0.07%
2.81E‐10
5.98E‐04
4.84E‐04
0.07%
2.08E‐08
8.97E‐09
4.49E‐10
4.49E‐10
17.11
17.10
11.60
5.000
0.2500
0.2500
12.65
12.64
9.056
3.232
0.1952
0.1616
100.00%
99.96%
71.59%
25.55%
1.54%
1.28%
OTP hrs
Tot trn km
Tot trn km
Tot trn km
Tot trn km
‐
D
‐
D
D
D
D
‐
‐
‐
‐
‐
‐
71
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐12 POS
HEM‐12 POS
HEM‐12 POS
HEM‐12 POS
HEM‐12 POS
MOP (trespasser) struck/crushed by train while on track at station inside possession
OTRESTNNOH
Adult trespasser struck while on tracks at station inside possession (not crossing tracks)
OTRESTN‐OH
Adult trespasser struck by a train while crossing track at station inside possession
OTRJSTNNOH
Child trespasser struck while on tracks at station inside possession (not crossing tracks)
OTRJSTN‐OH
Child trespasser struck by a train while crossing track at station inside possession
HEM‐14
HEM‐14A
HEM‐14A
HEM‐14A
HEM‐14A
HEM‐14A
HEM‐14A
HEM‐14A
HEM‐14A
HEM‐14A
HEM‐14A
HEM‐14B
HEM‐14B
HEM‐14 POS
HEM‐14 POS
HEM‐14 POS
HEM‐14 POS
HEM‐14 POS
Workforce (not infrastructure worker) struck/crushed by train
Workforce (not infrastructure worker) struck/crushed by train outside possession
GTDINATT‐H
Train crew (driver) inattention while on track leading to being struck/crushed by train
GOWINATT‐H
Other workforce inattention while on track leading to being struck/crushed by train
TDSTRTRK‐H
Train crew (driver) struck/crushed while taking short cuts across lines
TDSTRFALLH
Train crew (driver) struck by train following slip, trip or fall
OWSTRFALLH
Other workforce struck by train following slip, trip or fall
OWSTRTRK‐H
Other workforce struck/crushed while taking short cuts across lines
GTCINATT‐H
Train crew (other) inattention while on track leading to being struck/crushed by train
TCSTRTRK‐H
Train crew (other) struck/crushed while taking short cuts across lines
TCSTRFALLH
Train crew (other) struck by train following slip, trip or fall
Workforce (not infrastructure worker) struck/crushed by train outside possession (error during coupling)
GOWCOCRU‐H
Other workforce error during coupling/uncoupling leading to being struck/crushed by train
Train crew (driver) error during coupling/uncoupling leading to being struck/crushed by GTDCOCRU‐H
train
Workforce (not infrastructure worker) struck/crushed by train inside possession
GTCSCOTPOE
Train crew (other) struck/crushed by train inside possession
GTDSCOTPOE
Train crew (driver) struck/crushed by train inside possession
GTCSTOTPOH
Train crew (other) struck/crushed by train during coupling/uncoupling inside possession
GTDSTOTPOH
Train crew (driver) struck/crushed by train during coupling/uncoupling inside possession
HEM‐15
HEM‐15A
HEM‐15A
HEM‐15A
HEM‐15 POS
HEM‐15 POS
HEM‐15 POS
HEM‐15 POS
Workforce fall/alighting from moving train
Train crew fall from moving train
GTCFAFRT‐H
Train crew (other) fall from moving train
GTDFAFRT‐H
Train crew (driver) fall from moving train
Workforce fall from moving train inside possession
GTCFAOTP‐H
Train crew (other) fall from moving train inside possession GTDFAOTP‐H
Train crew (driver) fall from moving train inside possession
GTWFAFRT‐H
Infrastructure worker fall from moving train inside possession
HEM‐14B
Cause precursor description
Version 7.1 — August 2011
Normaliser
OTP hrs
OTP hrs
OTP hrs
OTP hrs
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
2.12E‐09
9.14E‐10
4.57E‐11
4.57E‐11
0.0067
0.0045
0.0019
9.73E‐05
9.73E‐05
0.0049
0.0035
0.0013
7.60E‐05
6.29E‐05
0.04%
0.03%
0.01%
0.00%
0.00%
0.3507
0.2751
0.0743
0.0587
0.0370
0.0370
0.0294
0.0294
0.0046
0.0023
0.0023
0.0367
0.0294
100.00%
78.43%
21.18%
16.74%
10.56%
10.56%
8.39%
8.38%
1.31%
0.66%
0.66%
10.47%
8.37%
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
D
D
D
‐
‐
‐
‐
‐
Tot trn km
Tot trn km
Tot trn km
Tot trn km
Pass jour
Pass jour
Tot trn km
Pass trn km
Pass trn km
2.07E‐10
1.64E‐10
1.03E‐10
1.03E‐10
3.70E‐11
3.69E‐11
1.28E‐11
7.33E‐12
7.33E‐12
Pass jour
4.31E‐11
0.5584
0.4278
0.1155
0.0913
0.0576
0.0576
0.0458
0.0457
0.0072
0.0036
0.0036
0.0667
0.0533
Tot trn km
2.39E‐11
0.0133
0.0073
2.09%
D
‐
OTP hrs
OTP hrs
OTP hrs
OTP hrs
1.28E‐08
6.38E‐09
7.23E‐09
3.62E‐09
0.0639
0.0272
0.0136
0.0154
0.0077
0.0389
0.0175
0.0087
0.0085
0.0042
11.10%
4.98%
2.49%
2.42%
1.21%
D
D
D
D
‐
‐
‐
‐
‐
0.5714
0.1429
0.0952
0.0476
0.4286
0.2143
0.1071
0.1071
0.1852
0.0265
0.0177
0.0088
0.1587
0.0794
0.0397
0.0397
100.00%
14.30%
9.53%
4.77%
85.70%
42.85%
21.43%
21.43%
Pass trn km
Tot trn km
1.95E‐10
8.55E‐11
OTP hrs
OTP hrs
OTP hrs
1.01E‐07
5.03E‐08
5.03E‐08
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
72
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐16
HEM‐16A
HEM‐16A
HEM‐16A
HEM‐16A
HEM‐16A
HEM‐16B
HEM‐16B
HEM‐16B
HEM‐16B
HEM‐16B
HEM‐16C
HEM‐16C
HEM‐16C
HEM‐16C
HEM‐16C
HEM‐16D
HEM‐16D
HEM‐16D
HEM‐16D
HEM‐16D
HEM‐16 POS
HEM‐16 POS
HEM‐16 POS
HEM‐16 POS
HEM‐16 POS
HEM‐16 POS
HEM‐16 POS
Workforce injury while boarding/alighting train
Workforce injury while alighting train to platform
GTCALPLT‐H
Train crew (other) injury while alighting train to platform
GOWALPLT‐H
Other workforce injury while alighting train to platform
GTDALPLT‐H
Train crew (driver) injury while alighting train to platform
GTWALPLT‐H
Infrastructure worker injury while alighting train to platform
Workforce injury while alighting train to track
GTDALTRK‐H
Train crew (driver) injury while alighting train to track
GTWALTRK‐H
Infrastructure worker injury while alighting train to track
GTCALTRK‐H
Train crew (other) injury while alighting train to track
GOWALTRK‐H
Other workforce injury while alighting train to track
Workforce injury while boarding train from platform
GTCBOPLT‐H
Train crew (other) injury while boarding train from platform
GOWBOPLT‐H
Other workforce injury while boarding train from platform
GTDBOPLT‐H
Train crew (driver) injury while boarding train from platform
GTWBOPLT‐H
Infrastructure worker injury while boarding train from platform
Workforce injury while boarding train from track
GTDBOTRK‐H
Train crew (driver) injury while boarding train from track
GTCBOTRK‐H
Train crew (other) injury while boarding train from track
GTWBOTRK‐H
Infrastructure worker injury while boarding train from track
GOWBOTRK‐H
Other workforce injury while boarding train from track
Workforce injury while boarding/alighting train ‐ inside possession
GTWALOTPOE
Infrastructure worker injury while alighting inside possession
GTDALOTPOE
Train crew (driver) injury while alighting inside possession
GTDBAOTPOE
Train crew (driver) injury while boarding inside possession
GTWBAOTPOE
Infrastructure worker injury while boarding inside possession
GTCALOTPOE
Train crew (other) injury while alighting inside possession
GTCBAOTPOE
Train crew (other) injury while boarding inside possession
HEM‐17
HEM‐17A
HEM‐17A
HEM‐17A
Workforce struck while leaning out of train (train in running)
Train crew struck while leaning out of train outside possession
GTCSTRLE‐H
Train crew (other) struck while leaning out of train
GTDSTRLE‐H
Train crew (driver) struck while leaning out of train
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
(events/
year)
(FWI/
year)
0.8497
0.4654
0.3614
0.0585
0.0452
3.80E‐04
0.1616
0.1274
0.0137
0.0137
0.0068
0.1575
0.0968
0.0326
0.0280
1.29E‐04
0.0361
0.0299
0.0027
0.0022
0.0013
0.0291
0.0137
0.0046
0.0040
0.0033
0.0023
0.0013
100.00%
54.77%
42.53%
6.88%
5.32%
0.04%
19.02%
15.00%
1.61%
1.61%
0.80%
18.53%
11.39%
3.83%
3.30%
0.02%
4.25%
3.52%
0.31%
0.26%
0.16%
3.43%
1.61%
0.54%
0.47%
0.39%
0.27%
0.16%
0.0191
0.0180
0.0122
0.0058
100.00%
94.43%
63.80%
30.63%
Pass trn km
Pass jour
Tot trn km
Infra worker hrs
1.86E‐07
1.19E‐08
2.03E‐08
1.73E‐09
Tot trn km
Infra worker hrs
Pass trn km
Pass jour
3.35E‐08
3.64E‐08
4.10E‐09
8.09E‐10
Pass trn km
Pass jour
Tot trn km
Infra worker hrs
7.31E‐08
9.70E‐09
1.85E‐08
8.67E‐10
Tot trn km
Pass trn km
Infra worker hrs
Pass jour
1.62E‐08
1.64E‐09
1.21E‐08
3.23E‐10
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
OTP hrs
9.39E‐07
3.13E‐07
5.64E‐07
4.70E‐07
1.57E‐07
1.88E‐07
214.9
116.8
90.67
14.67
11.33
0.0952
23.67
18.67
2.000
2.000
1.000
58.05
35.67
12.00
10.33
0.0476
10.87
9.000
0.8000
0.6667
0.4000
5.600
2.000
0.6667
1.200
1.000
0.3333
0.4000
3.41E‐09
1.44E‐09
2.612
2.467
1.667
0.8000
Pass trn km
Tot trn km
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
D
‐
‐
‐
‐
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
73
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐17 POS
HEM‐17 POS
HEM‐17 POS
HEM‐17 POS
Workforce struck while leaning out of train inside possession
GTWSTRLE‐H
Infrastructure worker struck while leaning out of train inside possession
GTDSLOTPOH
Train crew (driver) struck while leaning out of train inside possession
GTCSLOTPOH
Train crew (other) struck while leaning out of train inside possession
HEM‐19
HEM‐19A
Infrastructure worker struck/crushed by train in motion
Infrastructure worker struck/crushed by train in motion outside possession
Infrastructure worker struck by train due to failure to set up an appropriate safe system of GFSAFWNSUH
work
GFSAFWNFUH
Infrastructure worker struck by train due to failure to follow the safe system of work set up
GSTR‐‐‐‐UH
Infrastructure worker struck by train due to straying onto the running line
Infrastructure worker struck by train due to failure to move out of the path of the train GFAILA‐‐UH
(aware of train)
Infrastructure worker struck by train due to failure to move out of the path of the train (not GFAILN‐‐UH
aware of train)
GSTF‐‐‐‐UH
Infrastructure worker struck by train due to slip, trip or fall
GCOM‐‐‐‐UH
Infrastructure worker struck by train due to failure in/lack of communication
GGGE‐‐‐‐UH
Infrastructure worker struck by out of gauge item on passing train
Infrastructure worker struck/crushed by train in motion inside possession
GALIT‐‐OTPH
Infrastructure worker struck by train due to alighting from train – inside possession
Infrastructure worker struck/crushed by train due to mechanical/system failure on train – GBRP‐‐OTPF
inside possession
GSTF‐‐OTPH
Infrastructure worker struck/crushed by train due to slip, trip or fall – inside possession
Infrastructure worker struck/crushed by train due to failure in/lack of communication – GCOM‐‐OTPH
inside possession
Infrastructure worker struck/crushed by train due to unauthorised/incorrect movement – GDRV‐‐OTPH
inside possession
Infrastructure worker struck by train due to failure to move out of the path of the train (not GFAILNOTPH
aware of train) – inside possession
Infrastructure worker struck/crushed by train due to failure to set up an appropriate safe GFSWNSOTPH
system of work – inside possession
Infrastructure worker struck/crushed by train due to failure to follow the safe system of GFSWNFOTPH
work set up – inside possession
GSTL‐‐OTPH
Infrastructure worker struck by train due to straying out of possession onto the running line
Infrastructure worker struck/crushed by train due to mis‐management of machine – inside GWAG‐‐OTPH
possession
HEM‐19A
HEM‐19A
HEM‐19A
HEM‐19A
HEM‐19A
HEM‐19A
HEM‐19A
HEM‐19A
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
HEM‐19 POS
Cause precursor description
Version 7.1 — August 2011
Normaliser
OTP hrs
OTP hrs
OTP hrs
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
3.02E‐08
2.32E‐08
1.49E‐08
0.1455
0.0644
0.0494
0.0317
0.0011
4.70E‐04
3.60E‐04
2.31E‐04
5.57%
2.47%
1.89%
1.21%
4.333
2.364
1.916
1.027
100.00%
53.60%
D
D
D
‐
‐
‐
‐
‐
‐
Infra worker hrs
9.98E‐09
0.5477
0.2619
13.67%
D
‐
Infra worker hrs
Infra worker hrs
9.98E‐09
1.26E‐08
0.5477
0.6937
0.2619
0.2459
13.67%
12.83%
D
D
‐
‐
Infra worker hrs
4.74E‐09
0.2604
0.1245
6.50%
D
‐
Infra worker hrs
2.24E‐09
0.1227
0.0587
3.06%
D
‐
Infra worker hrs
Infra worker hrs
Infra worker hrs
2.24E‐09
9.11E‐10
3.41E‐10
6.89E‐09
0.0435
0.0239
0.0066
0.8889
0.1810
2.27%
1.25%
0.35%
46.40%
9.45%
D
E
E
Infra worker hrs
0.1227
0.0500
0.0187
1.970
0.3785
D
‐
‐
‐
‐
‐
Infra worker hrs
6.89E‐09
0.3785
0.1810
9.45%
D
‐
Infra worker hrs
4.46E‐09
0.2446
0.0867
4.53%
D
‐
Infra worker hrs
2.10E‐09
0.1153
0.0551
2.88%
D
‐
Infra worker hrs
2.10E‐09
0.1153
0.0551
2.88%
D
‐
Infra worker hrs
2.10E‐09
0.1153
0.0551
2.88%
D
‐
Infra worker hrs
2.10E‐09
0.1153
0.0551
2.88%
D
‐
Infra worker hrs
1.93E‐09
0.1057
0.0506
2.64%
E
‐
Infra worker hrs
2.10E‐09
0.1153
0.0409
2.13%
D
‐
Infra worker hrs
1.55E‐09
0.0853
0.0408
2.13%
E
‐
74
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HEM‐19 POS
GSIGEROTPH
HEM‐19 POS
GFAILAOTPH
HEM‐19 POS
GSHUNTOTPH
HEM‐19 POS
GGGE‐‐OTPH
HEM‐19 POS
GSPD‐‐OTPH
HEM‐19 POS
GSPOS‐OTPE
Infrastructure worker struck by train wrongly inside possession due to signaller error
Infrastructure worker struck by train due to failure to move out of the path of the train (aware of train) – inside possession
Infrastructure worker struck/crushed by train due to failure to control shunting movements – inside possession
Infrastructure worker struck by out of gauge item on passing train – inside possession
Infrastructure worker struck by train wrongly inside possession due to signal passed at danger
Infrastructure worker struck by train wrongly inside possession due to wrongside signal failure
HEM‐20
Workforce struck by flying object thrown up by passing train (includes objects thrown up by OTM movements outside a possession)
Workforce (non‐infrastructure worker) struck by flying object disturbed by or thrown up from passing train outside possession (includes objects thrown up by OTM movements outside a possession)
2.87E‐09
GTCSTGRT‐P
Train crew (other) struck by foreign body in the eye
Pass trn km
9.70E‐10
GOWSTGRT‐P
Other workforce struck by foreign body in the eye
Pass jour
7.69E‐10
GTDSTGRT‐P
Train crew (driver) struck by foreign body in the eye
Tot trn km
5.12E‐10
GTCSTFLY‐P
Train crew (other) struck by other flying object (excluding eye)
Pass trn km
2.02E‐10
GOWSTFLY‐P
Other workforce struck by other flying object (excluding eye)
Pass jour
1.48E‐10
GTDSTFLY‐P
Train crew (driver) struck by other flying object (excluding eye)
Tot trn km
Infrastructure worker struck by flying object disturbed by or thrown up from passing train outside possession (includes objects thrown up by OTM movements outside a possession)
7.65E‐08
GTWSTFLY‐P
Infrastructure worker struck by other flying object (excluding eye)
Infra worker hrs
1.82E‐08
GTWSTGRT‐P
Infrastructure worker struck by foreign body in the eye
Infra worker hrs
Workforce inside possession struck by flying object disturbed by or thrown up from passing train 6.26E‐07
GTWFYOTPOE
Infrastructure worker struck by other flying object (excluding eye) inside possession
OTP hrs
1.79E‐07
GTCFYOTPOE
Train crew (other) struck by other flying object (excluding eye) inside possession
OTP hrs
8.95E‐08
GTDFYOTPOE
Train crew (driver) struck by other flying object (excluding eye) inside possession
OTP hrs
1.34E‐07
GTWGDTPOSE
Infrastructure worker struck by foreign body in the eye inside possession
OTP hrs
6.71E‐08
GTCGDTPOSE
Train crew (other) struck by foreign body in the eye inside possession
OTP hrs
1.92E‐08
GTDGDTPOSE
Train crew (driver) struck by foreign body in the eye inside possession
OTP hrs
HEM‐20A
HEM‐20A
HEM‐20A
HEM‐20A
HEM‐20A
HEM‐20A
HEM‐20A
HEM‐20B
HEM‐20B
HEM‐20B
HEM‐20 POS
HEM‐20 POS
HEM‐20 POS
HEM‐20 POS
HEM‐20 POS
HEM‐20 POS
HEM‐20 POS
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Infra worker hrs
1.06E‐09
0.0584
0.0279
1.46%
E
‐
Infra worker hrs
6.13E‐10
0.0337
0.0161
0.84%
E
‐
Infra worker hrs
6.13E‐10
0.0337
0.0119
0.62%
E
‐
Infra worker hrs
6.13E‐10
0.0337
0.0119
0.62%
E
‐
Infra worker hrs
4.24E‐10
0.0233
0.0111
0.58%
E
‐
Infra worker hrs
3.26E‐10
0.0179
0.0086
0.45%
E
‐
11.19
0.1059
100.00%
‐
3.611
0.0137
12.92%
‐
1.400
1.200
0.4286
0.2500
0.2500
0.0824
0.0055
0.0047
0.0017
7.45E‐04
7.45E‐04
2.46E‐04
5.21%
4.47%
1.60%
0.70%
0.70%
0.23%
5.200
0.0634
59.87%
4.200
1.000
2.374
1.333
0.3810
0.1905
0.2857
0.1429
0.0408
0.0594
0.0039
0.0288
0.0189
0.0054
0.0027
0.0011
5.63E‐04
1.61E‐04
56.15%
3.72%
27.21%
17.82%
5.09%
2.55%
1.06%
0.53%
0.15%
D
D
D
D
D
E
‐
‐
‐
‐
‐
‐
‐
D
D
D
E
E
D
D
E
‐
‐
‐
‐
‐
‐
‐
‐
‐
75
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐21
HEM‐21A
HEM‐21A
HEM‐21A
HEM‐21A
HEM‐21A
HEM‐21B
HEM‐21B
HEM‐21B
HEM‐21B
HEM‐21B
HEM‐21C
HEM‐21C
HEM‐21C
HEM‐21C
HEM‐21 POS
HEM‐21 POS
HEM‐21 POS
HEM‐21 POS
Workforce fall between stationary train and platform
Workforce fall between stationary train and platform whilst alighting
GTCFALLAUH
Train crew (other) fall between stationary train and platform whilst alighting
GTDFALLAUH
Train crew (driver) fall between stationary train and platform whilst alighting
GOWFALLAUH
Other workforce fall between stationary train and platform whilst alighting
GTWFALLAUH
Infrastructure worker fall between stationary train and platform whilst alighting
Workforce fall between stationary train and platform whilst boarding
GTCFALLBUH
Train crew (other) fall between stationary train and platform whilst boarding
GOWFALLBUH
Other workforce fall between stationary train and platform whilst boarding
GTDFALLBUH
Train crew (driver) fall between stationary train and platform whilst boarding
GTWFALLBUH
Infrastructure worker fall between stationary train and platform whilst boarding
Workforce fall between stationary train and platform ‐ other
GTCFALLOUH
Train crew (other) fall between stationary train and platform ‐ other
GOWFALLOUH
Other workforce fall between stationary train and platform ‐ other
GTDFALLOUH
Train crew (driver) fall between stationary train and platform ‐ other
Workforce fall between stationary train and platform inside possession
GTWTPPOS‐H
Infrastructure worker fall between stationary train and platform inside possession
GTDTPPOS‐H
Train crew (driver) fall between stationary train and platform inside possession
GTCTPPOS‐H
Train crew (other) fall between stationary train and platform inside possession
HEM‐22
HEM‐22
HEM‐22
Workforce fall out of train onto track at station (no electric shock nor struck by train) GTCFATRK‐H
Train crew (other) fall out of train onto track at station (no electric shock nor struck by train) Train crew (driver) fall out of train onto track at station (no electric shock nor struck by GTDFATRK‐H
train) Infrastructure worker fall out of train onto track at station (no electric shock nor struck by GTWFATRK‐H
train) GOWFATRK‐H
Other workforce fall out of train onto track at station (no electric shock nor struck by train) HEM‐23
HEM‐23A
HEM‐23A
HEM‐23A
HEM‐23A
HEM‐23A
Train door closes on workforce
Train door closes on workforce
GTDEXTDO‐E
External train door closes on train crew (driver)
GTCEXTDO‐E
External train door closes on train crew (other)
GOWEXTDO‐E
External train door closes on other workforce
GTWEXTDO‐E
External train door closes on infrastructure worker
HEM‐22
HEM‐22
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.5435
0.3598
0.2496
0.0612
0.0487
3.42E‐04
0.0779
0.0588
0.0150
0.0040
5.25E‐05
0.1052
0.0680
0.0348
0.0023
6.16E‐04
3.64E‐04
1.62E‐04
8.91E‐05
100.00%
66.20%
45.92%
11.27%
8.95%
0.06%
14.33%
10.82%
2.76%
0.74%
0.01%
19.35%
12.52%
6.41%
0.43%
0.11%
0.07%
0.03%
0.02%
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
Tot trn km
Pass jour
Infra worker hrs
7.12E‐08
1.53E‐08
5.48E‐09
8.67E‐10
Pass trn km
Pass jour
Tot trn km
Infra worker hrs
5.47E‐08
5.50E‐09
3.26E‐09
4.34E‐10
Pass trn km
Pass jour
Tot trn km
2.96E‐08
5.99E‐09
8.87E‐10
OTP hrs
OTP hrs
OTP hrs
3.35E‐08
1.49E‐08
8.20E‐09
108.0
50.12
34.77
8.529
6.778
0.0476
35.34
26.69
6.807
1.815
0.0238
22.38
14.47
7.415
0.4941
0.1206
0.0714
0.0317
0.0175
Pass trn km
1.46E‐10
0.1429
0.0714
0.0061
0.0031
100.00%
50.00%
D
‐
‐
Tot trn km
6.41E‐11
0.0357
0.0015
25.00%
D
‐
Infra worker hrs
3.25E‐10
0.0179
7.67E‐04
12.50%
D
‐
Pass jour
1.44E‐11
0.0179
7.67E‐04
12.50%
D
‐
3.70E‐08
7.01E‐08
1.71E‐08
4.05E‐09
77.37
76.12
20.60
34.20
21.10
0.2222
0.1658
0.1620
0.0690
0.0573
0.0353
3.72E‐04
100.00%
97.73%
41.65%
34.54%
21.31%
0.22%
D
D
D
D
‐
‐
‐
‐
‐
‐
Tot trn km
Pass trn km
Pass jour
Infra worker hrs
D
D
D
D
D
D
D
D
D
D
D
76
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐23 POS
HEM‐23 POS
HEM‐23 POS
Train door closes on workforce inside possession
GTDEXDPOSE
External train door closes on train crew (driver) inside possession
GTWEXDPOSE
External train door closes on infrastructure worker inside possession
HEM‐25
HEM‐25A
HEM‐25A
HEM‐25A
HEM‐25 POS
MOP (trespasser) struck/crushed by train while on railway infrastructure not at station
MOP (trespasser) struck/crushed by train while on railway infrastructure outside possession not at station KADTRES‐‐H
MOP (adult trespasser) struck/crushed by train while on railway infrastructure not at station JCHTRES‐‐H
MOP (child trespasser) struck/crushed by train while on railway infrastructure not at station MOP (trespasser) struck/crushed by train while on railway infrastructure inside possession not at station MOP (adult trespasser) struck/crushed by train while on railway infrastructure inside KSTROTP‐OH
possession not at station MOP (child trespasser) struck/crushed by train while on railway infrastructure inside JSTROTP‐OH
possession not at station HEM‐25 POS
HEM‐25 POS
HEM‐27
HEM‐27A
HEM‐27A
HEM‐27A
HEM‐27A
HEM‐27B
HEM‐27B
HEM‐27B
HEM‐27C
HEM‐27C
HEM‐27C
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on level crossing or footpath crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCB + CCTV level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCB + CCTV ‐ user KCCTVCLIMH
violation: climbs over barrier
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCB + CCTV ‐ proper KCCTVTRAPH
use: user trapped
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCB + CCTV ‐ proper KCCTVTRAIH
use: train unexpected
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCB level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCB ‐ user violation: KMCB‐CLIMH
climbs over barrier
MOP (non‐trespasser) pedestrian or cyclist pedestrian or cyclist struck/crushed by train on KMCB‐TRAIH
MCB ‐ proper use: train unexpected
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCG level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCG ‐ user violation: KMCG‐CLIMH
climbs over barrier
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCG ‐ proper use: KMCG‐TRAIH
train unexpected
Version 7.1 — August 2011
Normaliser
OTP hrs
OTP hrs
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
4.70E‐07
1.17E‐07
1.250
1.000
0.2500
0.0038
0.0034
4.19E‐04
2.27%
2.02%
0.25%
31.81
31.80
30.60
1.200
0.0124
23.87
23.86
22.96
0.9004
0.0052
100.00%
99.98%
96.21%
3.77%
0.02%
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
Tot trn km
Tot trn km
5.49E‐08
2.15E‐09
OTP hrs
5.59E‐09
0.0119
0.0050
0.02%
D
‐
OTP hrs
2.19E‐10
4.67E‐04
1.97E‐04
0.00%
D
‐
7.188
0.7318
5.823
0.5929
0%
0%
‐
‐
LXs: MCB + CCTV
0.0017
0.6587
0.5336
0%
D
‐
LXs: MCB + CCTV
1.06E‐04
0.0413
0.0335
0%
D
‐
LXs: MCB + CCTV
8.14E‐05
0.0318
0.0258
0%
D
‐
0.1075
0.0871
0%
‐
LXs: MCB
4.27E‐04
0.1000
0.0810
0%
D
‐
LXs: MCB
3.23E‐05
0.0076
0.0061
0%
D
‐
0.0213
0.0172
0%
‐
LXs: MCG
1.08E‐04
0.0198
0.0160
0%
D
‐
LXs: MCG
8.18E‐06
0.0015
0.0012
0%
D
‐
77
Table B1
National frequency
Hazardous event code
HEM‐27D
HEM‐27D
HEM‐27D
HEM‐27D
HEM‐27D
HEM‐27D
HEM‐27D
HEM‐27D
HEM‐27D
HEM‐27E
HEM‐27E
HEM‐27E
HEM‐27E
HEM‐27E
HEM‐27E
HEM‐27E
HEM‐27E
HEM‐27E
Precursor code
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL ‐ user violation: KABCLFSLLH
ignores lights/barriers
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL ‐ user error: KABCLDOG‐H
distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL ‐ user error: KABCL2TRAH
second train coming
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL ‐ proper use: KABCLFALLH
slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL ‐ proper use: KABCLMALFF
train unexpected
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL ‐ user error: KABCLUNAWH
unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL ‐ proper use: KABCLSLOWH
slow moving/short warning
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL ‐ proper use: KABCLRTA‐H
road traffic accident
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB ‐ user violation: KAHB‐WALKH
ignores lights/barriers
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB ‐ proper use: KAHB‐SLOWH
slow moving/short warning
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB ‐ user error: KAHB‐DOG‐H
distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB ‐ user error: KAHB‐2TRAH
second train coming
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB ‐ proper use: KAHB‐FALLH
slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB ‐ proper use: KAHB‐MALFF
train unexpected
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB ‐ user error: KAHB‐UNAWH
unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB ‐ proper use: KAHB‐RTA‐H
road traffic accident
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0592
0.0479
0%
‐
LXs: ABCL
3.08E‐04
0.0160
0.0130
0%
D
‐
LXs: ABCL
2.00E‐04
0.0104
0.0084
0%
D
‐
LXs: ABCL
1.90E‐04
0.0099
0.0080
0%
D
‐
LXs: ABCL
1.89E‐04
0.0098
0.0080
0%
D
‐
LXs: ABCL
1.08E‐04
0.0056
0.0045
0%
D
‐
LXs: ABCL
8.85E‐05
0.0046
0.0037
0%
D
‐
LXs: ABCL
5.40E‐05
0.0028
0.0023
0%
D
‐
LXs: ABCL
7.88E‐07
4.10E‐05
3.32E‐05
0%
D
‐
1.004
0.8131
0%
‐
LXs: AHB
0.0017
0.7471
0.6053
0%
D
‐
LXs: AHB
1.41E‐04
0.0637
0.0516
0%
D
‐
LXs: AHB
1.08E‐04
0.0487
0.0394
0%
D
‐
LXs: AHB
1.02E‐04
0.0461
0.0373
0%
D
‐
LXs: AHB
1.02E‐04
0.0459
0.0372
0%
D
‐
LXs: AHB
5.79E‐05
0.0262
0.0212
0%
D
‐
LXs: AHB
4.76E‐05
0.0215
0.0174
0%
D
‐
LXs: AHB
1.01E‐05
0.0046
0.0037
0%
D
‐
78
Table B1
National frequency
Hazardous event code
HEM‐27F
HEM‐27F
HEM‐27F
HEM‐27F
HEM‐27F
HEM‐27F
HEM‐27F
HEM‐27F
HEM‐27F
HEM‐27G
HEM‐27G
HEM‐27G
HEM‐27G
HEM‐27G
HEM‐27G
HEM‐27G
HEM‐27G
HEM‐27G
Precursor code
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL ‐ user violation: KAOCLFSLLH
ignores lights
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL ‐ user error: KAOCLDOG‐H
distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL ‐ user error: KAOCL2TRAH
second train coming
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL ‐ proper use: KAOCLFALLH
slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL ‐ proper use: KAOCLMALFF
train unexpected
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL ‐ user error: KAOCLUNAWH
unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL ‐ proper use: KAOCLSLOWH
slow moving/short warning
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL ‐ proper use: KAOCLRTA‐H
road traffic accident
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL ‐ user KUWCMIGRLH
violation: ignores lights
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL ‐ user KUWCMDOG‐H
error: distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL ‐ user KUWCM2TRAH
error: second train coming
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL ‐ proper KUWCMWARNH
use: slow moving/short warning
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL ‐ proper KUWCMTRAIH
use: train unexpected
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL ‐ user KUWCMUNAWH
error: unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL ‐ proper KUWCMFALLH
use: slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL ‐ proper KUWCMRTA‐H
use: road traffic accident
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0891
0.0722
0%
‐
LXs: AOCL
5.12E‐04
0.0599
0.0485
0%
D
‐
LXs: AOCL
6.04E‐05
0.0071
0.0057
0%
D
‐
LXs: AOCL
5.72E‐05
0.0067
0.0054
0%
D
‐
LXs: AOCL
5.70E‐05
0.0067
0.0054
0%
D
‐
LXs: AOCL
3.25E‐05
0.0038
0.0031
0%
D
‐
LXs: AOCL
2.67E‐05
0.0031
0.0025
0%
D
‐
LXs: AOCL
1.63E‐05
0.0019
0.0015
0%
D
‐
LXs: AOCL
1.73E‐07
2.03E‐05
1.64E‐05
0%
D
‐
0.1952
0.1581
0%
‐
LXs: UWC + MWL
0.0012
0.1198
0.0970
0%
D
‐
LXs: UWC + MWL
4.02E‐04
0.0386
0.0312
0%
D
‐
LXs: UWC + MWL
2.01E‐04
0.0193
0.0156
0%
D
‐
LXs: UWC + MWL
1.23E‐04
0.0118
0.0096
0%
D
‐
LXs: UWC + MWL
2.45E‐05
0.0024
0.0019
0%
D
‐
LXs: UWC + MWL
2.01E‐05
0.0019
0.0016
0%
D
‐
LXs: UWC + MWL
1.54E‐05
0.0015
0.0012
0%
D
‐
LXs: UWC + MWL
2.71E‐07
2.60E‐05
2.11E‐05
0%
D
‐
79
Table B1
National frequency
Hazardous event code
HEM‐27H
HEM‐27H
HEM‐27H
HEM‐27H
HEM‐27H
HEM‐27H
HEM‐27H
HEM‐27H
HEM‐27H
HEM‐27H
HEM‐27I
HEM‐27I
HEM‐27I
HEM‐27I
HEM‐27I
HEM‐27I
HEM‐27I
HEM‐27I
HEM‐27I
Precursor code
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ user error: KUWCTFSSLH
fails to stop, look and listen
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ user error: KUWCTDOG‐H
distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ user KUWCTNIP‐H
violation: nips across in front of train
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ user error: KUWCTSIGHH
poor sighting
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ user error: KUWCT2TRAH
second train coming
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ user error: KUWCTUNAWH
unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ proper use: KUWCTFALLH
slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ proper use: KUWCTTRAIH
train unexpected
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T ‐ proper use: KUWCTRTA‐H
road traffic accident
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC ‐ user error: KUWC‐DOG‐H
distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC ‐ user error: fails KUWC‐FSLLH
to stop, look and listen
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC ‐ user error: KUWC‐SIGHH
poor sighting MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC ‐ user violation: KUWC‐NIP‐H
nips across in front of train
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC ‐ user error: KUWC‐2TRAH
second train coming
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC ‐ user error: KUWC‐UNAWH
unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC ‐ proper use: KUWC‐FALLH
slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC ‐ proper use: KUWC‐RTA‐H
road traffic accident
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.7491
0.6069
0%
‐
LXs: UWC + T
2.11E‐04
0.3521
0.2852
0%
D
‐
LXs: UWC + T
1.06E‐04
0.1760
0.1426
0%
D
‐
LXs: UWC + T
6.56E‐05
0.1093
0.0885
0%
D
‐
LXs: UWC + T
5.28E‐05
0.0880
0.0713
0%
D
‐
LXs: UWC + T
8.07E‐06
0.0134
0.0109
0%
D
‐
LXs: UWC + T
3.23E‐06
0.0054
0.0044
0%
D
‐
LXs: UWC + T
2.47E‐06
0.0041
0.0033
0%
D
‐
LXs: UWC + T
3.87E‐07
6.44E‐04
5.22E‐04
0%
D
‐
LXs: UWC + T
4.32E‐08
7.19E‐05
5.83E‐05
0%
D
‐
0.5575
0.4517
0%
‐
LXs: UWC
4.00E‐04
0.3534
0.2863
0%
D
‐
LXs: UWC
1.00E‐04
0.0883
0.0716
0%
D
‐
LXs: UWC
6.76E‐05
0.0597
0.0483
0%
D
‐
LXs: UWC
3.76E‐05
0.0332
0.0269
0%
D
‐
LXs: UWC
1.51E‐05
0.0134
0.0108
0%
D
‐
LXs: UWC
6.06E‐06
0.0054
0.0043
0%
D
‐
LXs: UWC
4.64E‐06
0.0041
0.0033
0%
D
‐
LXs: UWC
8.72E‐08
7.70E‐05
6.23E‐05
0%
D
‐
80
Table B1
National frequency
Hazardous event code
HEM‐27J
HEM‐27J
HEM‐27J
HEM‐27J
HEM‐27J
HEM‐27J
HEM‐27J
HEM‐27J
HEM‐27K
HEM‐27K
HEM‐27K
HEM‐27K
HEM‐27K
HEM‐27K
HEM‐27K
HEM‐27K
HEM‐27L
HEM‐27L
HEM‐27L
Precursor code
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC ‐ user error: fails KOC‐‐FSLLH
to stop, look and listen
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC ‐ user error: poor KOC‐‐SIGHH
sighting
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC ‐ user violation: KOC‐‐NIP‐H
nips across in front of train
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC ‐ user error: KOC‐‐DOG‐H
distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC ‐ proper use: KOC‐‐FALLH
slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC ‐ user error: KOC‐‐UNAWH
unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC ‐ proper use: road KOC‐‐RTA‐H
traffic accident
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL ‐ user KFPCMIGRLH
violation: ignores lights
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL ‐ user KFPCMDOG‐H
error: distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL ‐ user KFPCM2TRAH
error: second train coming
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL ‐ proper KFPCMWARNH
use: slow moving/short warning
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL ‐ proper KFPCMTRAIH
use: train unexpected
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL ‐ user KFPCMUNAWH
error: unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL ‐ user KFPCMFALLH
error: slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP (no lights) level crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP ‐ user error: fails to KFPC‐FSLLH
stop, look and listen
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP ‐ user error: poor KFPC‐SIGHH
sighting Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0039
0.0031
0%
‐
LXs: OC
3.69E‐05
0.0020
0.0016
0%
D
‐
LXs: OC
1.57E‐05
8.65E‐04
7.01E‐04
0%
D
‐
LXs: OC
9.83E‐06
5.40E‐04
4.38E‐04
0%
D
‐
LXs: OC
3.19E‐06
1.76E‐04
1.42E‐04
0%
D
‐
LXs: OC
3.01E‐06
1.66E‐04
1.34E‐04
0%
D
‐
LXs: OC
1.41E‐06
7.76E‐05
6.28E‐05
0%
D
‐
LXs: OC
6.80E‐08
3.74E‐06
3.03E‐06
0%
D
‐
0.2785
0.2256
0%
‐
LXs: FP + MWL
0.0030
0.1198
0.0970
0%
D
‐
LXs: FP + MWL
0.0020
0.0812
0.0658
0%
D
‐
LXs: FP + MWL
0.0010
0.0406
0.0329
0%
D
‐
LXs: FP + MWL
6.20E‐04
0.0248
0.0201
0%
D
‐
LXs: FP + MWL
1.24E‐04
0.0050
0.0040
0%
D
‐
LXs: FP + MWL
1.02E‐04
0.0041
0.0033
0%
D
‐
LXs: FP + MWL
7.78E‐05
0.0031
0.0025
0%
D
‐
3.389
2.745
0%
‐
LXs: FP
5.56E‐04
1.244
1.008
0%
D
‐
LXs: FP
3.13E‐04
0.6996
0.5668
0%
D
‐
81
Table B1
National frequency
Hazardous event code
HEM‐27L
HEM‐27L
HEM‐27L
HEM‐27L
HEM‐27L
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
HEM‐27 POS
Precursor code
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP ‐ user error: distracted/forced by dog
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP ‐ user violation: KFPC‐NIP‐H
nips across in front of train
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP ‐ user error: KFPC‐UNAWH
unaware of crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP ‐ user error: KFPC‐2TRAH
second train coming
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP ‐ proper use: KFPC‐FALLH
slipped, tripped, fell or snagged on crossing
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on level crossing inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP level crossing KSTRFP‐‐OH
inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AHB level crossing KSTRAHB‐OH
inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + T level KSTRUWCTOH
crossing inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCB + CCTV level KSTRCCTVOH
crossing inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC level crossing KSTRUWC‐OH
inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on FP + MWL level KSTRFPCMOH
crossing inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on UWC + MWL level KSTRUWCMOH
crossing inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCB level crossing KSTRMCB‐OH
inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on AOCL level crossing KSTRAOCLOH
inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on ABCL level crossing KSTRABCLOH
inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on MCG level crossing KSTRMCG‐OH
inside possession
MOP (non‐trespasser) pedestrian or cyclist struck/crushed by train on OC level crossing KSTROC‐‐OH
inside possession
KFPC‐DOG‐H
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
LXs: FP
3.13E‐04
0.6996
0.5668
0%
D
‐
LXs: FP
1.87E‐04
0.4177
0.3384
0%
D
‐
LXs: FP
6.95E‐05
0.1555
0.1260
0%
D
‐
LXs: FP
5.90E‐05
0.1319
0.1068
0%
D
‐
LXs: FP
1.81E‐05
0.0404
0.0328
0%
D
‐
0.0027
0.0022
0%
‐
LXs: FP
5.76E‐07
0.0013
0.0010
0%
D
‐
LXs: AHB
8.45E‐07
3.82E‐04
3.09E‐04
0%
D
‐
LXs: UWC + T
1.71E‐07
2.85E‐04
2.31E‐04
0%
D
‐
LXs: MCB + CCTV
7.12E‐07
2.78E‐04
2.25E‐04
0%
D
‐
LXs: UWC
2.40E‐07
2.12E‐04
1.72E‐04
0%
D
‐
LXs: FP + MWL
2.65E‐06
1.06E‐04
8.58E‐05
0%
D
‐
LXs: UWC + MWL
7.73E‐07
7.42E‐05
6.01E‐05
0%
D
‐
LXs: MCB
1.75E‐07
4.09E‐05
3.31E‐05
0%
D
‐
LXs: AOCL
2.90E‐07
3.39E‐05
2.75E‐05
0%
D
‐
LXs: ABCL
4.33E‐07
2.25E‐05
1.82E‐05
0%
D
‐
LXs: MCG
4.43E‐08
8.10E‐06
6.56E‐06
0%
D
‐
LXs: OC
2.67E‐08
1.47E‐06
1.19E‐06
0%
D
‐
82
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐30
HEM‐30A
HEM‐30A
HEM‐30A
HEM‐30 POS
HEM‐30 POS
MOP (trespasser) fall while on train exterior
MOP (trespasser) fall while on exterior of train
KSURF‐‐‐‐H
MOP (trespasser) fall/injured while on train exterior (surfing)
KELSUR‐‐‐E
MOP (trespasser) electric shock while on train exterior (surfing)
MOP (trespasser) fall while on exterior of train inside possession
KSURFOYPOH
MOP (trespasser) fall/electric shock while on exterior of train inside possession
HEM‐31
HEM‐31A
Suicide (or attempted suicide) involving rolling stock in motion
Attempted suicide involving rolling stock in motion
Attempted suicide or suspected suicide (not resulting in fatality) involving rolling stock in KSUIAT‐‐‐H
motion
Suicide involving rolling stock in motion
KSUICD‐‐‐H
Suicide or suspected suicide resulting in fatality involving rolling stock in motion
HEM‐31A
HEM‐31B
HEM‐31B
HEM‐32
HEM‐32A
HEM‐32A
HEM‐32 POS
HEM‐32 POS
HEM‐38
HEM‐38A
HEM‐38A
HEM‐38A
HEM‐38A
HEM‐38A
HEM‐38B
HEM‐38B
HEM‐38B
HEM‐38B
HEM‐38B
Cause precursor description
Normaliser
(events/ normaliser)
(events/
year)
(FWI/
year)
Tot trn km
Tot trn km
1.20E‐09
5.13E‐10
OTP hrs
1.74E‐10
0.9528
0.9524
0.6667
0.2857
3.71E‐04
3.71E‐04
0.2139
0.2138
0.1206
0.0932
7.38E‐05
7.38E‐05
100.00%
99.97%
56.38%
43.59%
0.03%
0.03%
242.0
37.83
207.4
2.399
100.00%
1.16%
Version 7.1 — August 2011
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
Trk m
1.22E‐06
37.83
2.399
1.16%
D
‐
Trk m
6.57E‐06
204.2
204.2
205.0
205.0
98.84%
98.84%
D
‐
‐
1.200
1.200
1.200
4.67E‐04
0.0145
0.0145
0.0145
5.65E‐06
100.00%
99.96%
99.96%
0.04%
4.67E‐04
5.65E‐06
0.04%
103.4
25.42
16.78
5.057
3.161
0.4214
77.93
40.76
11.30
7.375
18.50
0.6588
0.1882
0.1259
0.0380
0.0237
5.60E‐04
0.4706
0.3059
0.0848
0.0553
0.0246
100.00%
28.56%
19.12%
5.76%
3.60%
0.09%
71.44%
46.43%
12.87%
8.40%
3.73%
MOP (non‐trespasser) outside railway infrastructure struck by object from operations on railway infrastructure
MOP (non‐trespasser) outside railway infrastructure struck by objects thrown from operations on railway infrastructure
3.86E‐08
KRCIOBJ‐‐E
MOP (non‐trespasser) struck by objects thrown from railway infrastructure Trk m
MOP (non‐trespasser) outside railway infrastructure struck by objects thrown from operations on railway infrastructure inside possession
MOP (non‐trespasser) struck by objects thrown from railway infrastructure inside KPOSSOBJ‐E
OTP hrs
2.19E‐10
possession
Passenger injury due to sudden train movement
Passenger injury due to sudden changes in train speed
PPABODBRUP
Passenger strikes part of body due to sudden changes in train speed
PPAOTHBRUP
Passenger: other due to sudden changes in train speed
PPAOBJBRUP
Passenger struck by object inside train due to sudden changes in train speed
PPASCABRUP
Passenger scald/burn due to sudden changes in train speed
Passenger injury due to lurching
PPABODLRUP
Passenger strikes part of body due to lurching
PPAOBJLRUP
Passenger struck by object inside train due to lurching
PPAOTHLRUP
Passenger: other due to lurching
PPASCALRUP
Passenger scald/burn due to lurching
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
Pass trn km
Pass trn km
Pass trn km
Pass trn km
3.44E‐08
1.04E‐08
6.47E‐09
8.63E‐10
Pass trn km
Pass trn km
Pass trn km
Pass trn km
8.35E‐08
2.32E‐08
1.51E‐08
3.79E‐08
D
E
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
83
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐39
HEM‐39A
HEM‐39A
HEM‐39A
HEM‐39A
HEM‐39A
HEM‐39A
HEM‐39B
HEM‐39B
HEM‐39B
HEM‐39B
HEM‐39B
HEM‐39B
HEM‐39 POS
HEM‐39 POS
Workforce injury due to sudden train movement
Workforce injury due to sudden changes in train speed
GTCBODBRUP
Train crew (other) strikes part of body due to sudden changes in train speed
GTCOBJBRUP
Train crew (other) struck by object inside train due to sudden changes in train speed
GTCOTHBRUP
Train crew (other): other causes due to sudden changes in train speed
GTCSCABRUP
Train crew (other) scald/burn due to sudden changes in train speed
GTDINJBRUP
Train crew (driver): all injuries due to sudden changes in train speed
Workforce injury due to lurching
GTCBODLRUP
Train crew (other) strikes part of body due to lurching
GTCSCALRUP
Train crew (other) scald/burn due to lurching
GTCOTHLRUP
Train crew (other): other causes due to lurching
GTCOBJLRUP
Train crew (other) struck by object inside train due to lurching
GTDINJLRUP
Train crew (driver): all injuries due to lurching
Workforce injury due to sudden train movement inside possession
GTCLUPOSOE
Train crew (other) injury due to lurching inside possession
HEM‐40
HEM‐40A
MOP (non‐trespasser) struck by / contact with moving train due to being too close to platform edge
MOP (non‐trespasser) struck by / contact with moving train due to being too close to platform edge
MOP (non‐trespasser) struck by / contact with moving train due to being too close to PMPSTR‐‐‐H
Tot trn km
platform edge
MOP (non‐trespasser) struck by / contact with moving train due to being too close to platform edge inside possession
MOP (non‐trespasser) struck by / contact with moving train due to being too close to PMPSTRPOSH
OTP hrs
platform edge inside possession
HEM‐40A
HEM‐40 POS
HEM‐40 POS
Cause precursor description
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
392.0
42.67
16.33
12.20
8.667
3.667
1.800
349.3
174.7
68.33
56.00
44.67
5.600
0.1111
0.1111
0.9248
0.1306
0.0500
0.0373
0.0265
0.0112
0.0055
0.7939
0.3970
0.1553
0.1273
0.1015
0.0127
2.53E‐04
2.53E‐04
100.00%
14.12%
5.41%
4.04%
2.87%
1.21%
0.60%
85.85%
42.93%
16.80%
13.76%
10.98%
1.38%
0.03%
0.03%
1.000
1.000
0.1730
0.1730
100.00%
99.96%
1.000
0.1730
99.96%
3.89E‐04
6.73E‐05
0.04%
1.83E‐10
3.89E‐04
6.73E‐05
0.04%
D
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Tot trn km
3.35E‐08
2.50E‐08
1.78E‐08
7.51E‐09
3.23E‐09
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Tot trn km
3.58E‐07
1.40E‐07
1.15E‐07
9.15E‐08
1.01E‐08
OTP hrs
5.22E‐08
1.79E‐09
D
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
D
‐
‐
HEM‐41
HEM‐41
MOP (non‐trespasser) fall between stationary train and platform
KPLTFALL‐H
MOP (non‐trespasser) fall between stationary train and platform
Pass jour
3.23E‐10
0.4000
0.4000
0.0021
0.0021
100.00%
100.00%
D
‐
‐
HEM‐42
HEM‐42
Passenger struck by flying object thrown up by passing train while at station
PSTRUCKO‐E
Passenger struck by flying object thrown up by passing train
Pass jour
5.28E‐09
6.531
6.531
0.0105
0.0105
0%
0%
D
‐
‐
HEM‐43
HEM‐43A
HEM‐43A
HEM‐43A
HEM‐43A
Train door closes on MOP (non‐trespasser)
Train door (slam door) closes on MOP (non‐trespasser)
KSLOTHER‐H
Train door (slam door) closes on MOP (non‐trespasser) other
KSLALIGH‐H
Train door (slam door) closes on MOP (non‐trespasser) whilst alighting
KSLBOARD‐H
Train door (slam door) closes on MOP (non‐trespasser) whilst boarding
1.73E‐10
1.37E‐11
3.52E‐12
0.9305
0.2352
0.2139
0.0169
0.0044
0.0019
7.76E‐04
7.05E‐04
5.59E‐05
1.44E‐05
100.00%
39.90%
36.28%
2.87%
0.74%
D
D
D
‐
‐
‐
‐
‐
Version 7.1 — August 2011
Pass jour
Pass jour
Pass jour
84
Table B1
National frequency
Hazardous event code
Precursor code
HEM‐43B
HEM‐43B
HEM‐43B
HEM‐43B
Train door (non‐slam door) closes on MOP (non‐trespasser)
KPOALIGH‐H
Train door (non‐slam door) closes on MOP (non‐trespasser) whilst alighting
KPOOTHER‐H
Train door (non‐slam door) closes on MOP (non‐trespasser) other
KPOBOARD‐H
Train door (non‐slam door) closes on MOP (non‐trespasser) whilst boarding
HEM‐44
HEM‐44A
HEM‐44A
HEM‐44B
HEM‐44B
MOP (trespasser) jump from train in service
MOP (trespasser) jump from slam door train in service
PPSLJUMP‐H
MOP (trespasser) jump from slam door train in service
MOP (trespasser) jump from power door train in service
PPPDJUMP‐H
MOP (trespasser) jump from power door train in service
HEM‐50
Witnessing a traumatic event (movement)
Witnessing a traumatic event ‐ near miss with signallers, trespassers, workers on line, PNMMISC‐‐E
operating irregularities
PNMPFT‐‐‐E
Witnessing a traumatic event ‐ near miss with persons/vehicles on level crossings
HEM‐50
HEM‐50
Cause precursor description
Version 7.1 — August 2011
Normaliser
Pass jour
Pass jour
Pass jour
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
2.77E‐10
1.90E‐10
9.50E‐11
0.6954
0.3428
0.2351
0.1175
0.0012
5.76E‐04
3.95E‐04
1.97E‐04
60.10%
29.63%
20.32%
10.16%
0.6850
0.4277
0.4277
0.2573
0.2573
0.1726
0.1471
0.1471
0.0255
0.0255
100.00%
85.24%
85.24%
14.76%
14.76%
107.7
0.1107
100.00%
Pass jour
3.46E‐10
Pass jour
2.08E‐10
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Trk m
2.72E‐06
84.67
0.0870
78.64%
D
‐
Trk m
7.40E‐07
23.00
0.0236
21.36%
D
‐
85
This page has been intentionally left blank
Version 7.1 — August 2011
86
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐01
HEN‐01
HEN‐01
HEN‐01
HEN‐01
Exposure to a fire on railway infrastructure not at a station
YLNOFIRE‐E
Infrastructure worker exposure to fire on railway infrastructure (not at a station)
GTDOFIRE‐E
Train crew (driver) exposure to fire on railway infrastructure (not at a station)
GOWOFIRE‐E
Other workforce exposure to fire on railway infrastructure (not at a station)
GTCOFIRE‐E
Train crew (other) exposure to fire on railway infrastructure (not at a station)
HEN‐02
HEN‐02
Cause precursor description
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Infra worker hrs
Tot trn km
Pass jour
Pass trn km
3.44E‐08
7.98E‐10
8.98E‐11
1.58E‐10
2.521
1.889
0.4444
0.1111
0.0770
0.0167
0.0125
0.0029
7.37E‐04
5.11E‐04
100.00%
74.91%
17.63%
4.41%
3.05%
D
D
D
E
68%
90%
1%
20%
‐
Exposure to fire on railway infrastructure at a station YLNSFIRE‐E
Exposure to fire on railway infrastructure at a station Pass jour
3.59E‐10
0.4444
0.4444
0.0045
0.0045
100.00%
100.00%
D
‐
‐
HEN‐03
HEN‐03
Exposure to fire in a station not on railway infrastructure
YSTAFIRE‐E
Exposure to fire in a station not on railway infrastructure
Pass jour
3.23E‐10
0.4000
0.4000
0.0102
0.0102
100.00%
100.00%
D
‐
‐
HEN‐04
Exposure to explosion on railway infrastructure
Infrastructure worker exposure to an explosion on railway infrastructure (other than at a GTWEEXPLNE
station)
1.000
0.0421
100.00%
HEN‐04
80%
Infra worker hrs
1.82E‐08
1.000
0.0421
100.00%
D
80%
HEN‐05
HEN‐05
Exposure to an explosion at a station
YLNSEXPL‐E
Exposure to an explosion at a station
Pass jour
4.04E‐11
0.0500
0.0500
0.1500
0.1500
100.00%
100.00%
E
‐
‐
HEN‐07
HEN‐07
HEN‐07
HEN‐07
Passenger exposure to hazardous substances
PHAZSSUB‐E
Passenger exposure to other hazardous substances
PANIINSB‐E
Passenger exposure to animal/insect bites
PEXPTOX‐‐E
Passenger exposure to smoke, fumes or dusts
Pass jour
Pass jour
Pass jour
1.21E‐09
2.96E‐09
1.90E‐10
5.395
1.497
3.663
0.2350
0.0175
0.0110
0.0048
0.0017
100.00%
62.82%
27.32%
9.86%
D
D
D
‐
‐
‐
‐
HEN‐08
HEN‐08
Passenger observes electrical arcing at station
PSTAARC‐‐E
Passenger observes electrical arcing at station
Pass jour
1.90E‐10
0.2351
0.2351
0.0044
0.0044
100.00%
100.00%
D
‐
‐
HEN‐09
HEN‐09
Passenger electric shock at station (OHLE)
PSHKSOHL‐H
Passenger electric shock at station (OHLE)
Pass jour
5.39E‐11
0.0667
0.0667
0.0075
0.0075
100.00%
100.00%
D
‐
‐
HEN‐10
HEN‐10
Passenger electric shock at station (conductor rail)
PCONDST‐‐H
Passenger electric shock at station (conductor rail)
Pass jour
1.38E‐09
1.711
1.711
0.8477
0.8477
100.00%
100.00%
D
‐
‐
HEN‐11
HEN‐11
Passenger electric shock at station (non‐traction supplies)
PSHKSNTS‐H
Passenger electric shock at station (non‐traction supplies)
Pass jour
1.03E‐09
1.274
1.274
0.0046
0.0046
100.00%
100.00%
D
‐
‐
Version 7.1 — August 2011
87
Table B1
National frequency
Hazardous event code
HEN‐13
HEN‐13
HEN‐13
HEN‐13
HEN‐13
HEN‐14
HEN‐14A
HEN‐14A
HEN‐14A
HEN‐14A
HEN‐14A
HEN‐14A
HEN‐14A
HEN‐14A
HEN‐14A
HEN‐14A
HEN‐14B
HEN‐14B
HEN‐14B
HEN‐14B
HEN‐14B
HEN‐14B
HEN‐14B
HEN‐14B
HEN‐14B
HEN‐14B
Precursor code
Cause precursor description
Passenger fall from platform onto track (no electric shock nor struck by train)
Passenger fall from platform onto track (not struck by train or electrocuted by conductor PPNLFALL‐H
rail) under the influence
Passenger fall from platform onto track (not struck by train or electrocuted by conductor PPNGFALL‐H
rail) ‐ general causes
Passenger fall from platform onto track (no electric shock nor struck by train) due to illness ‐ PPLTFILL‐E
seizure, collapse, etc
Passenger fall from platform onto track (not struck by train or electrocuted by conductor PPLTVIMP‐E
rail) due to visual impairment
Passenger slip, trip or fall
Passenger slip, trip or fall (platform)
PPLTSLNC‐E
Passenger slip, trip or fall on platform other cause
PPLTSUCO‐E
Passenger slip, trip or fall due to surface contamination on platform
PPLTSLR‐‐H
Passenger slip, trip or fall due to running on platform
PPLTSLU‐‐E
Passenger slip, trip or fall due to uneven surface on platform
PPLTALC‐‐E
Passenger slip, trip or fall on platform due to being under the influence
PPLTSLI‐‐E
Passenger slip, trip or fall due to ice/snow on platform
PPLTSLO‐‐E
Passenger slip, trip or fall due to object on platform
PPLTILL‐‐E
Passenger slip, trip or fall on platform due to ill health
PPLTOVER‐E
Passenger slip, trip or fall due to overcrowding on platform
Passenger slip, trip or fall (stairs)
PSTRUNSPEE
Passenger slip, trip or fall on stairs other cause
PSTRRUN‐‐E
Passenger slip, trip or fall due to running on stairs
PSTRALC‐‐E
Passenger slip, trip or fall on stairs due to being under the influence
PSTRSUCO‐E
Passenger slip, trip or fall due to surface contamination on stairs
PSTRILL‐‐E
Passenger slip, trip or fall on stairs due to ill health
PSTRSURF‐E
Passenger slip, trip or fall due to uneven surface on stairs
PSTRICE‐‐E
Passenger slip, trip or fall due to ice/snow on stairs
PSTROBJ‐‐E
Passenger slip, trip or fall due to object on stairs
PSTRCROWDE
Passenger slip, trip or fall due to overcrowding on stairs
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
50.84
0.7056
100.00%
‐
Pass jour
2.01E‐08
24.81
0.3443
48.79%
D
‐
Pass jour
1.27E‐08
15.77
0.2188
31.02%
D
‐
Pass jour
4.84E‐09
5.988
0.0831
11.78%
D
‐
Pass jour
3.46E‐09
4.277
0.0594
8.41%
D
‐
2900.6
844.8
211.2
159.3
152.9
89.13
79.53
56.38
50.39
41.82
4.114
986.1
571.1
163.5
102.5
67.19
33.60
16.80
15.93
8.227
7.199
23.42
6.455
1.614
1.217
1.168
0.6810
0.6077
0.4308
0.3851
0.3196
0.0314
9.193
5.324
1.524
0.9555
0.6264
0.3132
0.1566
0.1485
0.0767
0.0671
100.00%
27.57%
6.89%
5.20%
4.99%
2.91%
2.60%
1.84%
1.64%
1.36%
0.13%
39.26%
22.74%
6.51%
4.08%
2.67%
1.34%
0.67%
0.63%
0.33%
0.29%
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
1.71E‐07
1.29E‐07
1.24E‐07
7.21E‐08
6.43E‐08
4.56E‐08
4.07E‐08
3.38E‐08
3.33E‐09
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
4.62E‐07
1.32E‐07
8.29E‐08
5.43E‐08
2.72E‐08
1.36E‐08
1.29E‐08
6.65E‐09
5.82E‐09
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
88
Table B1
National frequency
Hazardous event code
HEN‐14C
HEN‐14C
HEN‐14C
HEN‐14C
HEN‐14C
HEN‐14C
HEN‐14C
HEN‐14C
HEN‐14C
HEN‐14C
HEN‐14D
HEN‐14D
HEN‐14D
HEN‐14D
HEN‐14D
HEN‐14D
HEN‐14D
HEN‐14D
HEN‐14D
HEN‐14D
HEN‐14E
HEN‐14E
HEN‐14F
HEN‐14F
HEN‐14F
HEN‐14F
HEN‐14F
HEN‐14F
HEN‐14F
HEN‐14F
Precursor code
Cause precursor description
Passenger slip, trip or fall (escalator)
PESCUNSPEE
Passenger slip, trip or fall on escalator other cause
PESCALC‐‐E
Passenger slip, trip or fall on escalator due to being under the influence
PESCOBJ‐‐E
Passenger slip, trip or fall due to object on escalator
PESCILL‐‐E
Passenger slip, trip or fall on escalator due to ill health
PESCRUN‐‐E
Passenger slip, trip or fall due to running on escalator
PESCSUCO‐E
Passenger slip, trip or fall due to surface contamination on escalator
PESCSURF‐E
Passenger slip, trip or fall due to uneven surface on escalator
PESCCROWDE
Passenger slip, trip or fall due to overcrowding on escalator
PESCICE‐‐E
Passenger slip, trip or fall due to ice/snow on escalator
Passenger slip, trip or fall (station concourse)
PCONSUCO‐E
Passenger slip, trip or fall due to surface contamination on station concourse
PCONUNSPEE
Passenger slip, trip or fall on station concourse (includes waiting room) other cause
PCONOBJ‐‐E
Passenger slip, trip or fall due to object on station concourse (includes waiting room)
Passenger slip, trip or fall on station concourse (includes waiting room) due to being under PCONALC‐‐E
the influence
Passenger slip, trip or fall due to uneven surface on station concourse (includes waiting PCONSURF‐E
room)
PCONILL‐‐E
Passenger slip, trip or fall on station concourse (includes waiting room) due to ill health
PCONRUN‐‐E
Passenger slip, trip or fall due to running on station concourse (includes waiting room)
PCONICE‐‐E
Passenger slip, trip or fall due to ice/snow on station concourse (includes waiting room)
PCONCROWDE
Passenger slip, trip or fall due to overcrowding on station concourse (includes waiting room)
Passenger slip, trip or fall while legitimately crossing line on station crossing
PPLTLINE‐E
Passenger slip, trip or fall while legitimately crossing line on station crossing
Passenger slip, trip or fall (chair, bench, wheelchair)
PCHAUNSPEE
Passenger slip, trip or fall from chairs, benches, wheelchairs etc other cause
Passenger slip, trip or fall from chairs, benches, wheelchairs etc due to being under the PCHAALC‐‐E
influence
Passenger slip, trip or fall from defective chairs, benches, etc (due to vandalism, poor PCHADEF‐‐E
maintenance etc)
PCHAILL‐‐E
Passenger slip, trip or fall from chairs, benches, wheelchairs etc due to ill health
PCHASURF‐E
Passenger slip, trip or fall from chairs, benches, wheelchairs etc due to uneven surface
PCHASUCO‐E
Passenger slip, trip or fall from chairs, benches, wheelchairs due to surface contamination
PCHAOBJ‐‐E
Passenger slip, trip or fall from chairs, benches, wheelchairs etc due to object
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
3.383
2.310
0.6613
0.1546
0.1118
0.1094
0.0190
0.0079
0.0076
0.0011
3.651
1.378
0.8513
0.3955
14.45%
9.86%
2.82%
0.66%
0.48%
0.47%
0.08%
0.03%
0.03%
0.00%
15.59%
5.88%
3.64%
1.69%
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
2.69E‐07
7.71E‐08
1.80E‐08
1.30E‐08
1.27E‐08
2.22E‐09
9.22E‐10
8.81E‐10
1.29E‐10
Pass jour
Pass jour
Pass jour
1.46E‐07
9.01E‐08
4.18E‐08
487.5
332.9
95.30
22.28
16.11
15.77
2.742
1.140
1.089
0.1593
477.7
180.3
111.4
51.75
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Pass jour
3.49E‐08
43.19
0.3300
1.41%
D
‐
Pass jour
2.91E‐08
35.99
0.2750
1.17%
D
‐
Pass jour
Pass jour
Pass jour
Pass jour
2.02E‐08
2.00E‐08
3.48E‐09
8.65E‐10
0.1912
0.1886
0.0329
0.0082
0.0226
0.0226
0.1004
0.0511
0.82%
0.81%
0.14%
0.03%
0.10%
0.10%
0.43%
0.22%
D
D
D
D
8.47E‐09
25.02
24.68
4.300
1.069
3.771
3.771
20.59
10.48
D
‐
‐
‐
‐
‐
‐
‐
‐
Pass jour
3.05E‐09
Pass jour
Pass jour
3.88E‐09
4.799
0.0234
0.10%
D
‐
Pass jour
1.46E‐09
1.809
0.0088
0.04%
D
‐
Pass jour
Pass jour
Pass jour
Pass jour
1.39E‐09
1.11E‐09
2.30E‐10
1.04E‐10
1.714
1.371
0.2840
0.1290
0.0084
0.0067
0.0014
6.29E‐04
0.04%
0.03%
0.01%
0.00%
D
D
D
D
‐
‐
‐
‐
D
D
D
D
D
D
D
D
D
D
89
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐14G
HEN‐14G
HEN‐14G
HEN‐14G
HEN‐14G
HEN‐14G
HEN‐14G
HEN‐14G
HEN‐14G
Passenger slip, trip or fall (ramps)
PRAMUNSPEE
Passenger slip, trip or fall on ramps other cause
PRAMSUCO‐E
Passenger slip, trip or fall on ramps due to surface contamination
PRAMRUN‐‐E
Passenger slip, trip or fall due to running on ramps
PRAMICE‐‐E
Passenger slip, trip or fall due to ice/snow on ramps
PRAMALC‐‐E
Passenger slip, trip or fall on ramps due to being under the influence
PRAMSURF‐E
Passenger slip, trip or fall due to uneven surface on ramps
PRAMILL‐‐E
Passenger slip, trip or fall on ramps due to ill health
PRAMOBJ‐‐E
Passenger slip, trip or fall due to object on ramps
HEN‐15
HEN‐15
Cause precursor description
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
2.36E‐08
1.39E‐08
1.33E‐08
4.51E‐09
3.60E‐09
3.11E‐09
2.49E‐09
3.89E‐10
80.18
29.14
17.14
16.45
5.575
4.456
3.849
3.085
0.4807
0.6127
0.2227
0.1310
0.1257
0.0426
0.0341
0.0294
0.0236
0.0037
2.62%
0.95%
0.56%
0.54%
0.18%
0.15%
0.13%
0.10%
0.02%
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
Passenger fall from overbridge at station
PPOVERB‐‐H
Passenger fall from overbridge at station
Pass jour
1.73E‐10
0.2139
0.2139
0.0621
0.0621
100.00%
100.00%
D
‐
‐
HEN‐16
HEN‐16
Passenger fall during an evacuation at station
PEVCFALL‐H
Passenger fall during an evacuation at station
Pass jour
4.04E‐11
0.0500
0.0500
0.0027
0.0027
100.00%
100.00%
D
‐
‐
HEN‐21
HEN‐21
HEN‐21
HEN‐21
Workforce struck/crushed by structural collapse or large object
GTWSTMIS‐E
Infrastructure worker struck/crushed by structural collapse or large object
GOWFSTMI‐E
Other workforce struck/crushed by structural collapse or large object
GTCSTMIS‐E
Train crew struck/crushed by structural collapse or large object
Infra worker hrs
Pass jour
Pass trn km
1.82E‐07
1.89E‐09
6.83E‐10
12.67
10.00
2.333
0.3333
0.4227
0.3337
0.0779
0.0111
100.00%
78.95%
18.42%
2.63%
D
D
D
72%
80%
50%
‐
HEN‐22
HEN‐22
HEN‐22
HEN‐22
Workforce trapped in machinery
GTWTRPPT‐E
Infrastructure worker trapped in points/point machines
GTWTRPMA‐E
Infrastructure worker trapped in machinery (not points)
GOWTRPMA‐E
Workforce (not infrastructure worker) trapped in machinery
Infra workers (FTE)
Trk m
Pass jour
1.31E‐04
4.29E‐08
5.39E‐10
6.000
4.000
1.333
0.6667
0.0622
0.0291
0.0221
0.0111
100.00%
46.68%
35.55%
17.77%
D
D
D
88%
100%
100%
30%
HEN‐23
HEN‐23
HEN‐23
HEN‐23
HEN‐23
HEN‐23
HEN‐23
HEN‐23
HEN‐23
Workforce struck by / contact with / trapped in object at station
GOWTCHPA‐E
Other workforce struck by / contact with / trapped in object at station
GTCTCHPA‐E
Train crew (other) struck by / contact with / trapped in object at station
GTDTCHPA‐E
Train crew (driver) struck by / contact with / trapped in object at station
GTWTCHPA‐E
Infrastructure worker struck by / contact with / trapped in object at station
GOWSTFBE‐E
Other workforce struck by foreign body in the eye at station
GTDSTFBE‐E
Train crew (driver) struck by foreign body in the eye at station
GTCSTFBE‐E
Train crew (other) struck by foreign body in the eye at station
GTWSTFBE‐E
Infrastructure worker struck by foreign body in the eye at station
Pass jour
Pass trn km
Tot trn km
Infra worker hrs
Pass jour
Tot trn km
Pass trn km
Infra worker hrs
3.90E‐07
1.09E‐07
3.49E‐08
3.00E‐07
5.89E‐09
7.78E‐09
7.37E‐09
2.23E‐08
588.0
482.3
53.40
19.43
16.44
7.290
4.333
3.600
1.222
1.418
1.172
0.1297
0.0472
0.0399
0.0128
0.0076
0.0063
0.0022
100.00%
82.66%
9.15%
3.33%
2.82%
0.91%
0.54%
0.45%
0.15%
D
D
D
D
D
D
D
D
7%
7%
‐
1%
40%
7%
1%
‐
40%
Version 7.1 — August 2011
90
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐24
HEN‐24A
HEN‐24A
HEN‐24A
HEN‐24A
HEN‐24A
HEN‐24B
HEN‐24B
HEN‐24B
HEN‐24B
HEN‐24B
HEN‐24C
HEN‐24C
HEN‐24C
HEN‐24C
HEN‐24C
HEN‐24D
HEN‐24D
HEN‐24D
HEN‐24D
HEN‐24D
HEN‐24E
HEN‐24E
HEN‐24E
HEN‐24E
HEN‐24E
HEN‐24F
HEN‐24F
HEN‐24F
HEN‐24F
HEN‐24F
HEN‐24G
HEN‐24G
HEN‐24G
HEN‐24G
HEN‐24G
Workforce slip, trip or fall <2m
Workforce slip, trip or fall <2m (platform)
GOW<2PLT‐E
Other workforce slip, trip or fall (<2m) on platform
GTC<2PLT‐E
Train crew (other) slip, trip or fall (<2m) on platform
GTD<2PLT‐E
Train crew (driver) slip, trip or fall (<2m) on platform
GTW<2PLT‐E
Infrastructure worker slip, trip or fall (<2m) on platform
Workforce slip, trip or fall <2m (stairs)
GOW<2STP‐E
Other workforce slip, trip or fall (<2m) on stairs
GTW<2STP‐E
Infrastructure worker slip, trip or fall (<2m) on stairs
GTC<2STP‐E
Train crew (other) slip, trip or fall (<2m) on stairs
GTD<2STP‐E
Train crew (driver) slip, trip or fall (<2m) on stairs
Workforce slip, trip or fall <2m (escalator)
GOW<2ESC‐E
Other workforce slip, trip or fall (<2m) on escalator
GTC<2ESC‐E
Train crew (other) slip, trip or fall (<2m) on escalator
GTD<2ESC‐E
Train crew (driver) slip, trip or fall (<2m) on escalator
GTW<2ESC‐E
Infrastructure worker slip, trip or fall (<2m) on escalator
Workforce slip, trip or fall <2m (station concourse)
GOW<2CON‐E
Other workforce slip, trip or fall (<2m) on station concourse
GTC<2CON‐E
Train crew (other) slip, trip or fall (<2m) on station concourse
GTD<2CON‐E
Train crew (driver) slip, trip or fall (<2m) on station concourse
GTW<2CON‐E
Infrastructure worker slip, trip or fall (<2m) on station concourse
Workforce slip, trip or fall <2m (walkway)
GTW<2WAL‐E
Infrastructure worker slip, trip or fall (<2m) on walkway
GOW<2WAL‐E
Other workforce slip, trip or fall (<2m) on walkway
GTD<2WAL‐E
Train crew (driver) slip, trip or fall (<2m) on walkway
GTC<2WAL‐E
Train crew (other) slip, trip or fall (<2m) on walkway
Workforce slip, trip or fall <2m (ramp)
GTW<2SLS‐E
Infrastructure worker slip, trip or fall (<2m) on ramp
GOW<2SLS‐E
Other workforce slip, trip or fall (<2m) on ramp
GTD<2SLS‐E
Train crew (driver) slip, trip or fall (<2m) on ramp
GTC<2SLS‐E
Train crew (other) slip, trip or fall (<2m) on ramp
Workforce slip, trip or fall <2m (bridge)
GTW<2BRG‐E
Infrastructure worker slip, trip or fall (<2m) on bridge
GOW<2BRG‐E
Other workforce slip, trip or fall (<2m) on bridge
GTC<2BRG‐E
Train crew (other) slip, trip or fall (<2m) on bridge
GTD<2BRG‐E
Train crew (driver) slip, trip or fall (<2m) on bridge
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass jour
Pass trn km
Tot trn km
Infra worker hrs
7.25E‐08
1.28E‐07
5.32E‐08
9.71E‐08
Pass jour
Infra worker hrs
Pass trn km
Tot trn km
7.73E‐08
5.28E‐07
5.60E‐08
1.91E‐08
Pass jour
Pass trn km
Tot trn km
Infra worker hrs
3.84E‐09
4.10E‐09
1.08E‐09
1.82E‐09
Pass jour
Pass trn km
Tot trn km
Infra worker hrs
3.88E‐08
3.36E‐08
5.74E‐09
1.82E‐08
Infra worker hrs
Pass jour
Tot trn km
Pass trn km
1.58E‐07
6.47E‐09
5.13E‐09
3.28E‐09
Infra worker hrs
Pass jour
Tot trn km
Pass trn km
3.61E‐07
1.10E‐08
5.98E‐09
5.74E‐09
Infra worker hrs
Pass jour
Pass trn km
Tot trn km
7.29E‐08
1.89E‐09
1.46E‐09
3.59E‐10
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
1000.9
187.0
89.67
62.33
29.63
5.333
162.7
95.67
29.00
27.33
10.67
7.450
4.750
2.000
0.6000
0.1000
68.60
48.00
16.40
3.200
1.000
21.12
8.667
8.000
2.857
1.600
39.60
19.80
13.67
3.333
2.800
7.248
4.000
2.333
0.7143
0.2000
6.044
0.8756
0.4199
0.2919
0.1388
0.0250
0.8380
0.4928
0.1494
0.1408
0.0550
0.0384
0.0245
0.0103
0.0031
5.15E‐04
0.3213
0.2248
0.0768
0.0150
0.0047
0.1324
0.0543
0.0501
0.0179
0.0100
0.3610
0.1805
0.1246
0.0304
0.0255
0.0339
0.0187
0.0109
0.0033
9.37E‐04
100.00%
14.49%
6.95%
4.83%
2.30%
0.41%
13.87%
8.15%
2.47%
2.33%
0.91%
0.64%
0.40%
0.17%
0.05%
0.01%
5.32%
3.72%
1.27%
0.25%
0.08%
2.19%
0.90%
0.83%
0.30%
0.17%
5.97%
2.99%
2.06%
0.50%
0.42%
0.56%
0.31%
0.18%
0.06%
0.02%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
43%
‐
‐
‐
‐
‐
18%
7%
80%
‐
1%
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
33%
80%
‐
1%
‐
42%
80%
7%
1%
‐
46%
80%
7%
‐
1%
91
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐24H
HEN‐24H
HEN‐24H
HEN‐24H
HEN‐24H
HEN‐24I
HEN‐24I
HEN‐24I
HEN‐24I
HEN‐24J
HEN‐24J
HEN‐24J
HEN‐24J
HEN‐24K
HEN‐24K
HEN‐24K
HEN‐24K
HEN‐24K
HEN‐24L
HEN‐24L
HEN‐24L
HEN‐24L
HEN‐24L
HEN‐24M
HEN‐24M
HEN‐24M
HEN‐24M
HEN‐24M
HEN‐24N
HEN‐24N
HEN‐24N
HEN‐24N
HEN‐24N
Workforce slip, trip or fall <2m (on or about track)
GTW<2TRK‐E
Infrastructure worker slip, trip or fall (<2m) on or about track
GTD<2TRK‐E
Train crew (driver) slip, trip or fall (<2m) on or about track
GOW<2TRK‐E
Other workforce slip, trip or fall (<2m) on or about track
GTC<2TRK‐E
Train crew (other) slip, trip or fall (<2m) on or about track
Workforce slip, trip or fall <2m (signal box)
GOW<2SIG‐E
Other workforce slip, trip or fall (<2m) in signal box
GTW<2SIG‐E
Infrastructure worker slip, trip or fall (<2m) in signal box
GTD<2SIG‐E
Train crew (driver) slip, trip or fall (<2m) in signal box
Workforce slip, trip or fall <2m (ladder)
GTW<2LAD‐H
Infrastructure worker slip, trip or fall (<2m) from ladder
GOW<2LAD‐H
Other workforce slip, trip or fall (<2m) from ladder
GTC<2LAD‐H
Train crew (other) slip, trip or fall (<2m) from ladder
Workforce slip, trip or fall <2m (from platform not struck by train)
GOW<2POL‐E
Other workforce slip, trip or fall (<2m) from platform onto the line (not struck by train)
GTW<2POL‐E
Infrastructure worker slip, trip or fall (<2m) from platform onto the line (not struck by train)
GTD<2POL‐E
Train crew (driver) slip, trip or fall (<2m) from platform onto the line (not struck by train)
GTC<2POL‐E
Train crew (other) slip, trip or fall (<2m) from platform onto the line (not struck by train)
Workforce slip, trip or fall <2m (level crossing)
GOW<2LCR‐E
Other workforce slip, trip or fall (<2m) on level crossing
GTW<2LCR‐E
Infrastructure worker slip, trip or fall (<2m) on level crossing
GTC<2LCR‐E
Train crew (other) slip, trip or fall (<2m) on level crossing
GTD<2LCR‐E
Train crew (driver) slip, trip or fall (<2m) on level crossing
Workforce slip, trip or fall <2m (vehicle)
GTW<2VEH‐E
Infrastructure worker slip, trip or fall (<2m) from vehicle
GOW<2VEH‐E
Other workforce slip, trip or fall (<2m) from vehicle
GTC<2VEH‐E
Train crew (other) slip, trip or fall (<2m) from vehicle
GTD<2VEH‐E
Train crew (driver) slip, trip or fall (<2m) from vehicle
Workforce slip, trip or fall <2m (other)
GOW<2GEN‐E
Other workforce slip, trip or fall (<2m) at other location
GTW<2GEN‐E
Infrastructure worker slip, trip or fall (<2m) at other location
GTC<2GEN‐E
Train crew (other) slip, trip or fall (<2m) at other location
GTD<2GEN‐E
Train crew (driver) slip, trip or fall (<2m) at other location
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Infra worker hrs
Tot trn km
Pass jour
Pass trn km
6.27E‐06
5.98E‐08
2.55E‐08
3.41E‐09
Pass jour
Infra worker hrs
Tot trn km
1.99E‐08
4.16E‐08
2.24E‐10
Infra worker hrs
Pass jour
Pass trn km
8.59E‐08
2.91E‐09
2.05E‐10
Pass jour
Infra worker hrs
Tot trn km
Pass trn km
2.16E‐09
4.37E‐08
2.15E‐09
8.78E‐10
Pass jour
Infra worker hrs
Pass trn km
Tot trn km
5.39E‐09
6.19E‐08
2.05E‐09
1.79E‐09
Infra worker hrs
Pass jour
Pass trn km
Tot trn km
4.08E‐07
2.91E‐09
8.78E‐10
7.18E‐10
Pass jour
Infra worker hrs
Pass trn km
Tot trn km
6.01E‐09
9.71E‐08
3.41E‐09
1.44E‐09
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
410.9
344.3
33.33
31.60
1.667
27.08
24.67
2.286
0.1250
8.414
4.714
3.600
0.1000
6.695
2.667
2.400
1.200
0.4286
12.07
6.667
3.400
1.000
1.000
26.83
22.40
3.600
0.4286
0.4000
15.23
7.429
5.333
1.667
0.8000
2.576
2.158
0.2089
0.1981
0.0104
0.1268
0.1155
0.0107
5.85E‐04
0.0885
0.0496
0.0379
0.0011
0.0827
0.0329
0.0296
0.0148
0.0053
0.0756
0.0418
0.0213
0.0063
0.0063
0.2711
0.2264
0.0364
0.0043
0.0040
0.2231
0.1088
0.0781
0.0244
0.0117
42.61%
35.71%
3.46%
3.28%
0.17%
2.10%
1.91%
0.18%
0.01%
1.46%
0.82%
0.63%
0.02%
1.37%
0.55%
0.49%
0.25%
0.09%
1.25%
0.69%
0.35%
0.10%
0.10%
4.49%
3.75%
0.60%
0.07%
0.07%
3.69%
1.80%
1.29%
0.40%
0.19%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
70%
80%
1%
33%
‐
13%
7%
80%
1%
59%
80%
33%
‐
29%
‐
80%
1%
‐
41%
33%
80%
‐
1%
71%
80%
33%
‐
1%
44%
33%
80%
‐
1%
92
Table B1
National frequency
Hazardous event code
HEN‐25
HEN‐25A
HEN‐25A
HEN‐25A
HEN‐25B
HEN‐25B
HEN‐25B
HEN‐25B
HEN‐25C
HEN‐25C
HEN‐25C
HEN‐25C
HEN‐25D
HEN‐25D
HEN‐25D
HEN‐25E
HEN‐25E
HEN‐25E
HEN‐25F
HEN‐25F
HEN‐25F
HEN‐25G
HEN‐25G
HEN‐25H
HEN‐25H
HEN‐25I
HEN‐25I
HEN‐25I
Precursor code
Cause precursor description
Workforce slip, trip or fall >2m
Workforce slip, trip or fall >2m (hole/pit)
GTW>2HOL‐E
Infrastructure worker slip, trip or fall (>2m) into hole/pit
GOW>2HOL‐E
Other workforce slip, trip or fall (>2m) into hole/pit
Workforce slip, trip or fall >2m (embankment/wall/hill/cliff/sloping surface)
Infrastructure worker slip, trip or fall (>2m) from or down GTW>2EMB‐E
embankment/wall/hill/cliff/sloping surface
Train crew (driver) slip, trip or fall (>2m) from or down embankment/wall/hill/cliff/sloping GTD>2EMB‐E
surface
Other workforce slip, trip or fall (>2m) from or down embankment/wall/hill/cliff/sloping GOW>2EMB‐E
surface
Workforce slip, trip or fall >2m (stairs/steps)
GOW>2STP‐E
Other workforce slip, trip or fall (>2m) on stairs/steps
GTC>2STP‐E
Train crew (other) slip, trip or fall (>2m) on stairs/steps
GTW>2STP‐E
Infrastructure worker slip, trip or fall (>2m) on stairs/steps
Workforce slip, trip or fall >2m (scaffold/temporary structure)
Infrastructure worker slip, trip or fall (>2m) from scaffold or temporary structure (excluding GTW>2SCF‐E
on track machines, cranes, cherry pickers)
Other workforce slip, trip or fall (>2m) from scaffold or temporary structure (excluding on GOW>2SCF‐E
track machines, cranes, cherry pickers)
Workforce slip, trip or fall >2m (ladder)
GTW>2LAD‐H
Infrastructure worker slip, trip or fall (>2m) from ladder
GOW>2LAD‐H
Other workforce slip, trip or fall (>2m) from ladder
Workforce slip, trip or fall >2m (road vehicle)
GTW>2ROV‐E
Infrastructure worker slip, trip or fall (>2m) from road vehicle (eg RRVs in road mode)
GOW>2ROV‐E
Other workforce slip, trip or fall (>2m) from road vehicle (eg RRVs in road mode)
Workforce slip, trip or fall >2m (rail vehicle)
Infrastructure worker slip, trip or fall (>2m) from rail vehicle (eg on track machines, RRVs in GTW>2RAV‐E
rail mode)
Workforce slip, trip or fall >2m (bridge)
GTW>2BRG‐E
Infrastructure worker slip, trip or fall (>2m) from or through bridge
Workforce slip, trip or fall >2m (crane)
GTW>2CRN‐E
Infrastructure worker slip, trip or fall (>2m) from crane (eg cherry pickers)
GOW>2CRN‐E
Other workforce slip, trip or fall (>2m) from crane (eg cherry pickers)
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
16.32
3.476
3.333
0.1429
3.514
0.6437
0.0899
0.0862
0.0037
0.0908
100.00%
13.96%
13.39%
0.57%
14.11%
D
D
62%
77%
80%
10%
65%
Infra worker hrs
Pass jour
6.07E‐08
1.16E‐10
Infra worker hrs
5.10E‐08
2.800
0.0724
11.24%
D
80%
Tot trn km
7.69E‐10
0.4286
0.0111
1.72%
D
1%
Pass jour
2.31E‐10
0.2857
0.0074
1.15%
D
10%
Pass jour
Pass trn km
Infra worker hrs
9.70E‐10
4.10E‐10
3.64E‐09
1.600
1.200
0.2000
0.2000
2.029
0.0830
0.0622
0.0104
0.0104
0.1052
12.89%
9.67%
1.61%
1.61%
16.35%
D
D
D
18%
10%
‐
80%
81%
Infra worker hrs
2.91E‐08
1.600
0.0830
12.89%
D
100%
Pass jour
3.47E‐10
0.4286
0.0222
3.45%
D
10%
Infra worker hrs
Pass jour
2.34E‐08
9.70E‐10
Infra worker hrs
Pass jour
1.09E‐08
8.98E‐11
2.486
1.286
1.200
0.7111
0.6000
0.1111
0.2857
0.1289
0.0667
0.0622
0.0369
0.0311
0.0058
0.0148
20.03%
10.36%
9.67%
5.73%
4.83%
0.90%
2.30%
Infra worker hrs
5.20E‐09
0.2857
0.0148
2.30%
Infra worker hrs
7.29E‐09
Infra worker hrs
Pass jour
5.20E‐09
1.01E‐10
0.4000
0.4000
0.4107
0.2857
0.1250
0.0103
0.0103
0.0106
0.0074
0.0032
1.61%
1.61%
1.65%
1.15%
0.50%
D
D
D
D
D
D
D
D
57%
100%
10%
69%
80%
10%
80%
80%
80%
80%
100%
100%
100%
93
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐25J
HEN‐25J
HEN‐25J
HEN‐25K
HEN‐25K
HEN‐25K
HEN‐25N
HEN‐25N
HEN‐25N
Workforce slip, trip or fall >2m (roof/permanent structure)
GTW>2ROF‐E
Infrastructure worker slip, trip or fall (>2m) from roof / permanent structure
GOW>2ROF‐E
Other workforce slip, trip or fall (>2m) from roof/permanent structure
Workforce slip, trip or fall >2m (trees/shrubbery)
GTW>2TRE‐E
Infrastructure worker slip, trip or fall (>2m) from tree/shrubbery
GOW>2TRE‐E
Other workforce slip, trip or fall (>2m) from tree/shrubbery
Workforce slip, trip or fall >2m (structure/vehicle/hydraulic failure)
GOW>2SVH‐E
Other workforce slip, trip or fall (>2m) due to structure/vehicle/hydraulic failure
GTW>2SVH‐E
Infrastructure worker slip, trip or fall (>2m) due to structure/vehicle/hydraulic failure
HEN‐26
HEN‐26
HEN‐26
HEN‐26
HEN‐26
Workforce struck/crushed by non‐train vehicle
GTWSTNTV‐E
Infrastructure worker struck/crushed by non‐train vehicle
GOWSTNTV‐E
Other workforce struck/crushed by non‐train vehicle
GTCSTNTV‐E
Train crew (other) struck/crushed by non‐train vehicle
GTDSTNTV‐E
Train crew (driver) struck/crushed by non‐train vehicle
HEN‐27
HEN‐27A
HEN‐27A
HEN‐27A
HEN‐27B
HEN‐27B
HEN‐27B
HEN‐27C
HEN‐27C
HEN‐27C
HEN‐27C
HEN‐27C
Workforce scalds or burns due to contact with hot object (not on train)
Workforce burn due to electrical equipment failure (not on train) GOWBURNE‐H
Other workforce burn due to electrical equipment failure
GTWBURNE‐H
Infrastructure worker burn due to electrical equipment failure
Workforce burn due to welding, flame / disc cutting or angle grinding
GTWBURNW‐H
Infrastructure worker burn due to welding, flame / disc cutting or angle grinding
GOWBURNW‐H Other workforce burn due to welding, flame / disc cutting or angle grinding
Workforce burn due to other causes (not on train)
GOWBURNO‐E
Other workforce burn due to other causes
GTWBURNO‐E
Infrastructure worker burn due to other causes
GTDBURNO‐E
Train crew (driver) burn due to other causes
GTCBURNO‐E
Train crew (other) burn due to other causes
HEN‐28
HEN‐28A
HEN‐28A
HEN‐28A
HEN‐28A
HEN‐28A
Workforce observes electrical arcing
Workforce observes electrical arcing (conductor rail)
GTWARCCO‐E
Infrastructure worker observes electrical arcing: conductor rail
GOWARCCO‐E
Other workforce observes electrical arcing: conductor rail
GTDARCCO‐E
Train crew (driver) observes electrical arcing: conductor rail
GTCARCCO‐E
Train crew (other) observes electrical arcing: conductor rail
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0247
0.0173
0.0074
0.0356
0.0207
0.0148
0.0130
0.0065
0.0065
3.84%
2.69%
1.15%
5.53%
3.22%
2.30%
2.01%
1.01%
1.01%
Infra worker hrs
Pass jour
6.07E‐09
1.16E‐10
Infra worker hrs
Pass jour
7.29E‐09
2.31E‐10
Pass jour
Infra worker hrs
1.01E‐10
2.28E‐09
0.4762
0.3333
0.1429
0.6857
0.4000
0.2857
0.2500
0.1250
0.1250
Infra worker hrs
Pass jour
Pass trn km
Tot trn km
1.09E‐07
3.64E‐09
2.46E‐09
7.18E‐10
12.10
6.000
4.500
1.200
0.4000
0.2472
0.1489
0.0956
0.0021
6.86E‐04
100.00%
60.23%
38.66%
0.83%
0.28%
0.0669
0.0011
6.59E‐04
3.96E‐04
0.0278
0.0264
0.0014
0.0380
0.0185
0.0152
0.0028
0.0016
100.00%
1.58%
0.99%
0.59%
41.55%
39.44%
2.11%
56.87%
27.61%
22.68%
4.23%
2.37%
0.1022
0.0528
0.0235
0.0218
0.0044
0.0031
100.00%
51.63%
23.00%
21.32%
4.26%
3.05%
Pass jour
Infra worker hrs
2.70E‐10
3.64E‐09
Infra worker hrs
Pass jour
2.43E‐07
5.78E‐10
Pass jour
Infra worker hrs
Tot trn km
Pass trn km
7.55E‐09
1.40E‐07
2.56E‐09
1.64E‐09
33.81
0.5333
0.3333
0.2000
14.05
13.33
0.7143
19.23
9.333
7.667
1.429
0.8000
1.96E‐08
8.09E‐10
3.59E‐10
2.93E‐10
4.690
2.422
1.079
1.000
0.2000
0.1429
Infra worker hrs
Pass jour
Tot trn km
Pass trn km
D
D
73%
100%
10%
51%
80%
10%
45%
10%
80%
D
D
D
D
50%
80%
4%
‐
‐
D
D
D
D
D
D
D
D
60%
34%
7%
80%
95%
100%
7%
35%
7%
80%
1%
‐
D
D
D
D
54%
50%
90%
25%
1%
‐
D
D
D
D
94
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐28B
HEN‐28B
HEN‐28B
HEN‐28B
HEN‐28B
HEN‐28C
HEN‐28C
HEN‐28C
HEN‐28C
Workforce observes electrical arcing (OHLE)
GTCARCOH‐E
Train crew (other) observes electrical arcing: OHLE
GTWARCOH‐E
Infrastructure worker observes electrical arcing ‐ OHLE
GOWARCOH‐E
Other workforce observes electrical arcing: OHLE
GTDARCOH‐E
Train crew (driver) observes electrical arcing: OHLE
Workforce observes electrical arcing (other)
GTWARCOT‐E
Infrastructure worker observes electrical arcing: other causes
GTDARCOT‐E
Train crew (driver) observes electrical arcing: other causes
GTCARCOT‐E
Train crew (other) observes electrical arcing: other causes
HEN‐29
HEN‐29A
HEN‐29A
HEN‐29A
HEN‐29A
HEN‐29A
HEN‐29B
HEN‐29B
HEN‐29B
HEN‐29B
HEN‐29B
HEN‐29C
HEN‐29C
HEN‐29C
HEN‐29C
HEN‐29C
Workforce exposure to hazardous substances (including stings, bites and needle injuries)
Workforce exposure to animal/insect bites
GTWIINSB‐E
Infrastructure worker exposure to animal/insect bites
GOWIINSB‐E
Other workforce exposure to animal/insect bites
GTCIINSB‐E
Train crew (other) exposure to animal/insect bites
GTDIINSB‐E
Train crew (driver) exposure to animal/insect bites
Workforce exposure to needle stick injuries
GTWNEED‐E
Infrastructure worker exposure to needle stick injuries
GOWNEED‐E
Other workforce exposure to needle stick injuries
GTCNEED‐E
Train crew (other) exposure to needle stick injuries
GTDNEED‐E
Train crew (driver) exposure to needle stick injuries
Workforce exposure to other hazardous substances (excluding asphyxiation)
GTWHAZS‐E
Infrastructure worker exposure to other hazardous substances (excluding asphyxiation)
GOWHAZS‐E
Other workforce exposure to other hazardous substances (excluding asphyxiation)
GTCHAZS‐E
Train crew (other) exposure to other hazardous substances (excluding asphyxiation)
GTDHAZS‐E
Train crew (driver) exposure to other hazardous substances (excluding asphyxiation)
HEN‐30
HEN‐30A
HEN‐30A
HEN‐30A
HEN‐30A
HEN‐30B
HEN‐30B
HEN‐30B
HEN‐30B
Workforce electric shock (conductor rail)
Workforce electric shock (conductor rail) due to fall
GTWFACON‐H
Infrastructure worker electric shock: contact with conductor rail due to fall
GTDFACON‐H
Train crew (driver) electric shock: contact with conductor rail due to fall
GOWFACON‐H
Other workforce electric shock: contact with conductor rail due to fall
Workforce electric shock (conductor rail) via item/object
GTWITCON‐H
Infrastructure worker electric shock: contact with conductor rail via item/object
GOWITCON‐H
Other workforce electric shock: contact with conductor rail via item/object
GTDITCON‐H
Train crew (driver) electric shock: contact with conductor rail via item/object
Cause precursor description
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Pass trn km
Infra worker hrs
Pass jour
Tot trn km
8.19E‐10
7.29E‐09
1.16E‐10
2.56E‐10
Infra worker hrs
Tot trn km
Pass trn km
1.82E‐08
2.56E‐10
8.25E‐11
Infra worker hrs
Pass jour
Pass trn km
Tot trn km
2.19E‐07
9.43E‐09
5.74E‐09
2.39E‐09
Infra worker hrs
Pass jour
Pass trn km
Tot trn km
6.68E‐08
2.61E‐09
2.56E‐10
1.12E‐10
Infra worker hrs
Pass jour
Pass trn km
Tot trn km
4.55E‐07
1.27E‐08
2.34E‐09
7.69E‐10
Infra worker hrs
Tot trn km
Pass jour
5.20E‐09
2.56E‐10
2.17E‐11
Infra worker hrs
Pass jour
Tot trn km
3.64E‐08
1.18E‐10
2.56E‐10
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
1.086
0.4000
0.4000
0.1429
0.1429
1.183
1.000
0.1429
0.0403
0.0237
0.0087
0.0087
0.0031
0.0031
0.0258
0.0218
0.0031
8.78E‐04
23.15%
8.53%
8.53%
3.05%
3.05%
25.22%
21.32%
3.05%
0.86%
77.12
27.80
12.00
11.67
2.800
1.333
7.087
3.667
3.233
0.1250
0.0625
42.24
25.00
15.67
1.143
0.4286
0.1506
0.0507
0.0219
0.0213
0.0051
0.0024
0.0086
0.0044
0.0039
1.51E‐04
7.54E‐05
0.0913
0.0540
0.0339
0.0025
9.26E‐04
100.00%
33.70%
14.55%
14.14%
3.39%
1.62%
5.68%
2.94%
2.59%
0.10%
0.05%
60.62%
35.88%
22.49%
1.64%
0.62%
3.794
0.4554
0.2857
0.1429
0.0268
2.288
2.000
0.1456
0.1429
0.3922
0.0918
0.0576
0.0288
0.0054
0.0889
0.0777
0.0057
0.0056
100.00%
23.40%
14.68%
7.34%
1.38%
22.67%
19.81%
1.44%
1.42%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
37%
‐
90%
25%
1%
76%
90%
1%
‐
45%
37%
80%
5%
‐
1%
44%
80%
5%
‐
1%
49%
80%
5%
‐
1%
79%
58%
90%
1%
25%
80%
90%
25%
1%
95
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐30C
HEN‐30C
HEN‐30C
Workforce (other than OTP workforce) electric shock (conductor rail) due to incorrect isolation
GTWISCON‐H
Infrastructure worker electric shock: contact with conductor rail due to isolation error
GOWISCON‐H
Other workforce electric shock: contact with conductor rail due to isolation error
HEN‐31
HEN‐31A
HEN‐31A
HEN‐31A
HEN‐31B
HEN‐31B
HEN‐31B
HEN‐31B
Workforce electric shock (OHLE)
Workforce electric shock (OHLE) (direct contact)
GTWISOHL‐H
Infrastructure worker electric shock: contact with OHLE due to incorrect isolation
GTDISOHL‐H
Train crew (driver) electric shock: contact with OHLE due to incorrect isolation
Workforce electric shock (OHLE) (indirect contact)
GTWITOHL‐H
Infrastructure worker electric shock: contact with OHLE via item/object
GOWITOHL‐H
Other workforce electric shock: contact with OHLE via item/object
GTDITOHL‐H
Train crew (driver) electric shock: contact with OHLE via item/object
HEN‐32
HEN‐32
HEN‐32
HEN‐32
HEN‐32
Workforce electric shock (non‐traction supply)
GOWESNTS‐H
Other workforce electric shock (non‐traction supply)
GTWESNTS‐H
Infrastructure worker electric shock (non‐traction supply)
GTDESNTS‐H
Train crew (driver) electric shock (non‐traction supply)
GTCESNTS‐H
Train crew (other) electric shock (non‐traction supply)
HEN‐33
HEN‐33A
HEN‐33A
HEN‐33A
HEN‐33B
HEN‐33B
HEN‐33B
HEN‐33B
HEN‐33B
HEN‐33C
HEN‐33C
Workforce affected by fumes/smoke/asphyxiation/drowning
Workforce affected by fumes/smoke/asphyxiation not at a station
GTWASPHY‐E
Infrastructure worker affected by fumes/smoke/asphyxiation not at a station
GOWASPHY‐E
Other workforce affected by fumes/smoke/asphyxiation not at a station
Workforce affected by fumes/smoke/asphyxiation at a station GOWASPHS‐E
Other workforce affected by fumes/smoke/asphyxiation at a station
GTDASPHS‐E
Train crew (driver) affected by fumes/smoke/asphyxiation at a station
GTCASPHS‐E
Train crew (other) affected by fumes/smoke/asphyxiation at a station
GTWASPHS‐E
Infrastructure worker affected by fumes/smoke/asphyxiation at a station
Workforce asphyxiation (drowning)
GTWDROWN‐E
Infrastructure worker drowning
HEN‐35
HEN‐35A
HEN‐35A
HEN‐35A
HEN‐35A
HEN‐35A
Workforce involved in road traffic accident whilst on duty
Workforce (other than OTP workforce) involved in road traffic accident while on duty
GTWRTA‐‐‐H
Infrastructure worker involved in road traffic accident
GOWRTA‐‐‐H
Other workforce involved in road traffic accident
GTDRTA‐‐‐H
Train crew(driver) involved in road traffic accident
GTCRTA‐‐‐H
Train crew(other) involved in road traffic accident
Cause precursor description
Version 7.1 — August 2011
Normaliser
Infra worker hrs
Pass jour
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
1.82E‐08
4.03E‐11
1.050
1.000
0.0498
0.2115
0.2015
0.0100
53.93%
51.38%
2.56%
0.2582
0.1474
0.1310
0.0164
0.1109
0.0745
0.0224
0.0140
100.00%
57.06%
50.72%
6.34%
42.94%
28.86%
8.66%
5.41%
D
D
D
85%
100%
100%
100%
66%
90%
25%
1%
D
D
D
D
29%
7%
80%
1%
‐
Infra worker hrs
Tot trn km
7.29E‐09
8.97E‐11
Infra worker hrs
Pass jour
Tot trn km
1.21E‐08
1.62E‐10
2.24E‐10
1.442
0.4500
0.4000
0.0500
0.9917
0.6667
0.2000
0.1250
Pass jour
Infra worker hrs
Tot trn km
Pass trn km
5.12E‐09
5.46E‐08
5.13E‐10
4.10E‐10
9.819
6.333
3.000
0.2857
0.2000
0.0360
0.0232
0.0110
0.0010
7.33E‐04
100.00%
64.50%
30.55%
2.91%
2.04%
0.1561
0.0441
0.0264
0.0176
0.0859
0.0588
0.0110
0.0098
0.0063
0.0262
0.0262
100.00%
28.23%
16.94%
11.29%
55.01%
37.64%
7.06%
6.27%
4.03%
16.76%
16.76%
0.7950
0.7940
0.3970
0.2433
0.1281
0.0256
100.00%
99.88%
49.94%
30.61%
16.11%
3.22%
Infra worker hrs
Pass jour
1.09E‐08
3.23E‐10
Pass jour
Tot trn km
Pass trn km
Infra worker hrs
1.08E‐09
4.49E‐10
4.55E‐10
2.60E‐09
Infra worker hrs
8.67E‐10
2.996
1.000
0.6000
0.4000
1.948
1.333
0.2500
0.2222
0.1429
0.0476
0.0476
5.65E‐07
1.54E‐08
1.79E‐08
4.10E‐09
62.67
62.00
31.00
19.00
10.00
2.000
Infra worker hrs
Pass jour
Tot trn km
Pass trn km
D
D
D
D
87%
90%
25%
D
42%
62%
90%
20%
20%
20%
1%
‐
80%
80%
80%
D
D
D
D
12%
12%
15%
13%
1%
‐
D
D
D
D
D
D
96
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐35B
HEN‐35B
Signaller struck by road vehicle
GSIGSTRVH
Signaller struck by road vehicle
HEN‐36
HEN‐36
Cause precursor description
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
LXs: MCB + CCTV
0.0017
0.6667
0.6667
9.63E‐04
9.63E‐04
0.12%
0.12%
D
‐
‐
MOP (adult trespasser) slip, trip or fall while on railway infrastructure
KTRSFALL‐H
MOP (adult trespasser) slip, trip or fall while on railway infrastructure
Trk m
5.99E‐07
18.60
18.60
0.7705
0.7705
100.00%
100.00%
D
‐
‐
HEN‐37
HEN‐37
HEN‐37
MOP (adult trespasser) electric shock (OHLE)
KTRSOHLN‐H
MOP (adult trespasser) electric shock: contact with OHLE not in station
KTRSOHLS‐H
MOP (adult trespasser) electric shock: contact with OHLE in station
Trk m
Trk m
3.86E‐08
1.29E‐08
1.600
1.200
0.4000
0.6533
0.4900
0.1633
100.00%
75.00%
25.00%
D
D
‐
‐
‐
HEN‐38
HEN‐38A
HEN‐38A
HEN‐38B
HEN‐38B
MOP (adult trespasser) electric shock (conductor rail)
MOP (adult trespasser) electric shock (conductor rail) at station
KTRSCONS‐H
MOP (adult trespasser) electric shock: contact with conductor rail at station
MOP (adult trespasser) electric shock (conductor rail) not at station
KTRSCONN‐H
MOP (adult trespasser) electric shock: contact with conductor rail not at station
6.210
4.652
4.652
1.558
1.558
100.00%
74.91%
74.91%
25.09%
25.09%
HEN‐39
HEN‐39
HEN‐39
Trk m
2.00E‐07
Trk m
9.01E‐08
9.000
6.200
6.200
2.800
2.800
MOP (adult trespasser) electric shock (non‐traction supply)
KTRSNTSN‐H
MOP (adult trespasser) electric shock: contact with non‐traction supplies not in station
KTRSNTSS‐H
MOP (adult trespasser) electric shock: contact with non‐traction supplies in station
Trk m
Trk m
1.95E‐09
1.95E‐09
0.1212
0.0606
0.0606
0.0051
0.0026
0.0026
HEN‐40
HEN‐40
MOP (child trespasser) slip, trip or fall while on railway infrastructure
JTRSFALL‐H
MOP (child trespasser) slip, trip or fall while on railway infrastructure
Trk m
4.29E‐08
1.333
1.333
HEN‐41
HEN‐41
HEN‐41
MOP (child trespasser) electric shock (OHLE)
JTRSOHLN‐H
MOP (child trespasser) electric shock: contact with OHLE not in station
JTRSOHLS‐H
MOP (child trespasser) electric shock: contact with OHLE in station
Trk m
Trk m
4.51E‐08
4.60E‐09
HEN‐42
HEN‐42
HEN‐42
MOP (child trespasser) electric shock (conductor rail)
JTRSCONS‐H
MOP (child trespasser) electric shock: contact with conductor rail in station
JTRSCONN‐H
MOP (child trespasser) electric shock: contact with conductor rail not in station
Trk m
Trk m
HEN‐43
HEN‐43
HEN‐43
MOP (child trespasser) electric shock (non‐traction supply)
JTRSNTSN‐H
MOP (child trespasser) electric shock: contact with non‐traction supplies not in station
JTRSNTSS‐H
MOP (child trespasser) electric shock: contact with non‐traction supplies in station
Trk m
Trk m
Version 7.1 — August 2011
D
‐
‐
‐
‐
‐
100.00%
50.00%
50.00%
D
D
‐
‐
‐
0.0596
0.0596
100.00%
100.00%
D
‐
‐
1.543
1.400
0.1429
0.2462
0.2234
0.0228
100.00%
90.74%
9.26%
D
D
‐
‐
‐
2.15E‐08
1.07E‐08
1.000
0.6667
0.3333
0.4024
0.2683
0.1341
100.00%
66.67%
33.33%
D
D
‐
‐
‐
3.22E‐09
2.68E‐09
0.1833
0.1000
0.0833
0.0077
0.0042
0.0035
100.00%
54.55%
45.45%
E
E
‐
‐
‐
D
97
Table B1
National frequency
Hazardous event code
HEN‐44
HEN‐44A
HEN‐44A
HEN‐44A
HEN‐44A
HEN‐44A
HEN‐44A
HEN‐44B
HEN‐44B
HEN‐44B
HEN‐44B
HEN‐44B
HEN‐44C
HEN‐44C
HEN‐44C
HEN‐44C
HEN‐44C
Precursor code
Cause precursor description
Normaliser
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on MCB + CCTV
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUCCTV1H
LXs: MCB + CCTV
equipment on MCB + CCTV ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUCCTV2H
LXs: MCB + CCTV
equipment on MCB + CCTV ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUCCTV3H
LXs: MCB + CCTV
equipment on MCB + CCTV ‐ proper use: other
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing LXs: MCB + CCTV
KEQUCCTV4H
equipment on MCB + CCTV ‐ proper use: equipment failure
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing LXs: MCB + CCTV
KEQUCCTV5H
equipment on MCB + CCTV ‐ proper use: signaller error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on MCB
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUMCB‐1H
LXs: MCB
equipment on MCB ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUMCB‐2H
LXs: MCB
equipment on MCB ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUMCB‐4H
LXs: MCB
equipment on MCB ‐ proper use: equipment failure
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing LXs: MCB
KEQUMCB‐3H
equipment on MCB ‐ proper use: other
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on MCG
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUMCG‐3H
LXs: MCG
equipment on MCG ‐ proper use: other
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUMCG‐1H
LXs: MCG
equipment on MCG ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUMCG‐2H
LXs: MCG
equipment on MCG ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing LXs: MCG
KEQUMCG‐4H
equipment on MCG ‐ proper use: equipment failure
Version 7.1 — August 2011
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
12.02
7.533
0.1439
0.0902
100.00%
62.69%
0.0094
3.667
0.0439
30.51%
D
‐
0.0036
1.400
0.0168
11.65%
D
‐
0.0026
1.000
0.0120
8.32%
D
‐
0.0020
0.8000
0.0096
6.66%
D
‐
0.0017
0.6667
0.0080
5.55%
D
‐
1.743
0.0209
14.50%
0.0028
0.6667
0.0080
5.55%
D
‐
0.0026
0.6000
0.0072
4.99%
D
‐
0.0014
0.3333
0.0040
2.77%
D
‐
6.11E‐04
0.1429
0.0017
1.19%
D
‐
0.9976
0.0119
8.30%
0.0036
0.6667
0.0080
5.55%
D
‐
7.81E‐04
0.1429
0.0017
1.19%
D
‐
6.07E‐04
0.1111
0.0013
0.92%
D
‐
4.21E‐04
0.0770
9.22E‐04
0.64%
D
‐
‐
‐
‐
‐
98
Table B1
National frequency
Hazardous event code
HEN‐44D
HEN‐44D
HEN‐44D
HEN‐44D
HEN‐44E
HEN‐44E
HEN‐44E
HEN‐44E
HEN‐44G
HEN‐44G
HEN‐44G
HEN‐44G
HEN‐44H
HEN‐44H
HEN‐44H
HEN‐44H
HEN‐44I
HEN‐44I
HEN‐44I
HEN‐44I
Precursor code
Cause precursor description
Normaliser
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on ABCL
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUABCL3H
LXs: ABCL
equipment on ABCL ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUABCL1H
LXs: ABCL
equipment on ABCL ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUABCL2H
LXs: ABCL
equipment on ABCL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on AHB
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUAHB‐1H
LXs: AHB
equipment on AHB ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUAHB‐3H
LXs: AHB
equipment on AHB ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUAHB‐2H
LXs: AHB
equipment on AHB ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on UWC + MWL
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUUWCM3H
LXs: UWC + MWL
equipment on UWC + MWL ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUUWCM1H
LXs: UWC + MWL
equipment on UWC + MWL ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUUWCM2H
LXs: UWC + MWL
equipment on UWC + MWL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on UWC + T
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUUWCT3H
LXs: UWC + T
equipment on UWC + T ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUUWCT1H
LXs: UWC + T
equipment on UWC + T ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUUWCT2H
LXs: UWC + T
equipment on UWC + T ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on UWC
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUUWC‐3H
LXs: UWC
equipment on UWC ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing KEQUUWC‐1H
LXs: UWC
equipment on UWC ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing LXs: UWC
KEQUUWC‐2H
equipment on UWC ‐ user violation
Version 7.1 — August 2011
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.1086
0.0013
0.90%
0.0011
0.0596
7.14E‐04
0.50%
D
‐
6.27E‐04
0.0326
3.91E‐04
0.27%
D
‐
3.14E‐04
0.0163
1.95E‐04
0.14%
D
‐
0.4470
0.0054
3.72%
4.19E‐04
0.1896
0.0023
1.58%
D
‐
3.60E‐04
0.1626
0.0019
1.35%
D
‐
2.10E‐04
0.0948
0.0011
0.79%
D
‐
0.0779
9.33E‐04
0.65%
6.72E‐04
0.0645
7.72E‐04
0.54%
D
‐
7.46E‐05
0.0072
8.58E‐05
0.06%
D
‐
6.51E‐05
0.0063
7.49E‐05
0.05%
D
‐
0.1936
0.0023
1.61%
9.72E‐05
0.1620
0.0019
1.35%
D
‐
1.08E‐05
0.0180
2.16E‐04
0.15%
D
‐
8.14E‐06
0.0136
1.62E‐04
0.11%
D
‐
0.2104
0.0025
1.75%
2.01E‐04
0.1776
0.0021
1.48%
D
‐
2.23E‐05
0.0197
2.36E‐04
0.16%
D
‐
1.49E‐05
0.0131
1.57E‐04
0.11%
D
‐
‐
‐
‐
‐
‐
99
Table B1
National frequency
Hazardous event code
HEN‐44K
HEN‐44K
HEN‐44K
HEN‐44K
HEN‐44L
HEN‐44L
HEN‐44L
HEN‐44L
Precursor code
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on FP + MWL
MOP (non‐trespasser) pedestrian or cyclist struck/trapped by level crossing equipment on KEQUFPM‐3H
LXs: FP + MWL
FP + MWL ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist struck/trapped by level crossing equipment on KEQUFPM‐1H
LXs: FP + MWL
FP + MWL ‐ user error
MOP (non‐trespasser) pedestrian or cyclist struck/trapped by level crossing equipment on KEQUFPM‐2H
LXs: FP + MWL
FP + MWL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck/trapped by level crossing equipment on FP
MOP (non‐trespasser) pedestrian or cyclist struck/trapped by level crossing equipment on KEQUFP‐‐3H
LXs: FP
FP ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist struck/trapped by level crossing equipment on KEQUFP‐‐1H
LXs: FP
FP ‐ user error
MOP (non‐trespasser) pedestrian or cyclist struck/trapped by level crossing equipment on KEQUFP‐‐2H
LXs: FP
FP ‐ user violation
HEN‐45
HEN‐45A
HEN‐45A
HEN‐45B
HEN‐45B
HEN‐45C
HEN‐45C
MOP (non‐trespasser) fall onto railway infrastructure
MOP (non‐trespasser) fall onto railway infrastructure from bridge (incl. RTA)
KRCIFBRG‐H
MOP (non‐trespasser) fall onto railway infrastructure from bridge, footbridge
MOP (non‐trespasser) fall onto railway infrastructure from wall, bank, roof, fence (incl. RTA)
KRCIFOTH‐H
MOP (non‐trespasser) fall onto railway infrastructure from wall, bank, roof, fence
MOP (non‐trespasser) fall onto railway infrastructure from other ‐ eg viaduct (incl. RTA)
KRCIFOTT‐H
MOP (non‐trespasser) fall onto railway infrastructure from other eg viaduct
HEN‐46
HEN‐46A
HEN‐46A
HEN‐46A
HEN‐46A
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on level crossing or footpath crossing
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on MCB + CCTV
KSTFCCTV3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCB + CCTV ‐ proper use: other
KSTFCCTV4H
Pedestrian slip, trip or fall on MCB + CCTV ‐ proper use: surface in need of maintenance
KCYCCCTV3H
MOP (non‐trespasser) cyclist fall on MCB + CCTV ‐ proper use: other
MOP (non‐trespasser) cyclist fall on MCB + CCTV ‐ proper use: surface in need of KCYCCCTV4H
maintenance
KSTFCCTV1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCB + CCTV ‐ user error
KCYCCCTV1H
MOP (non‐trespasser) cyclist fall on MCB + CCTV ‐ user error
KMOTCCTV3H
MOP (non‐trespasser) motorcyclist fall on MCB + CCTV ‐ proper use: other
KSTFCCTV2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCB + CCTV ‐ user violation
MOP (non‐trespasser) motorcyclist fall on MCB + CCTV ‐ proper use: surface in need of KMOTCCTV4H
maintenance
KCYCCCTV2H
MOP (non‐trespasser) cyclist fall on MCB + CCTV ‐ user violation
HEN‐46A
HEN‐46A
HEN‐46A
HEN‐46A
HEN‐46A
HEN‐46A
HEN‐46A
Normaliser
Version 7.1 — August 2011
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0383
4.59E‐04
0.32%
7.99E‐04
0.0320
3.83E‐04
0.27%
D
‐
8.88E‐05
0.0036
4.25E‐05
0.03%
D
‐
7.04E‐05
0.0028
3.37E‐05
0.02%
D
‐
0.6675
0.0080
5.55%
2.52E‐04
0.5640
0.0068
4.69%
D
‐
2.80E‐05
0.0627
7.50E‐04
0.52%
D
‐
1.83E‐05
0.0409
4.90E‐04
0.34%
D
‐
0.3366
0.1631
0.1631
0.1299
0.1299
0.0436
0.0436
100.00%
48.45%
48.45%
38.60%
38.60%
12.94%
12.94%
Trk m
5.15E‐08
Trk m
4.51E‐08
Trk m
1.43E‐08
3.444
1.600
1.600
1.400
1.400
0.4444
0.4444
LXs: MCB + CCTV
LXs: MCB + CCTV
LXs: MCB + CCTV
0.0048
0.0030
0.0024
15.14
6.361
1.880
1.175
0.9402
0.3724
0.1565
0.0463
0.0289
0.0231
LXs: MCB + CCTV
0.0018
0.7052
LXs: MCB + CCTV
LXs: MCB + CCTV
LXs: MCB + CCTV
LXs: MCB + CCTV
0.0014
9.02E‐04
7.51E‐04
5.46E‐04
LXs: MCB + CCTV
LXs: MCB + CCTV
‐
‐
D
‐
‐
‐
‐
‐
‐
‐
100.00%
42.02%
12.42%
7.76%
6.21%
D
D
D
‐
‐
‐
‐
‐
0.0173
4.66%
D
‐
0.5289
0.3526
0.2938
0.2136
0.0130
0.0087
0.0072
0.0053
3.49%
2.33%
1.94%
1.41%
D
D
D
D
‐
‐
‐
‐
3.01E‐04
0.1175
0.0029
0.78%
D
‐
1.82E‐04
0.0712
0.0018
0.47%
D
‐
D
D
100
Table B1
National frequency
Hazardous event code
HEN‐46A
HEN‐46A
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46B
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
HEN‐46C
Precursor code
Cause precursor description
KMOTCCTV1H
MOP (non‐trespasser) motorcyclist fall on MCB + CCTV ‐ user error
KMOTCCTV2H
MOP (non‐trespasser) motorcyclist fall on MCB + CCTV ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on MCB
KSTFMCB‐3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCB ‐ proper use: other
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCB ‐ proper use: surface in need of KSTFMCB‐4H
maintenance
KCYCMCB‐3H
MOP (non‐trespasser) cyclist fall on MCB ‐ proper use: other
KCYCMCB‐4H
MOP (non‐trespasser) cyclist fall on MCB ‐ proper use: surface in need of maintenance
KSTFMCB‐1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCB ‐ user error
KCYCMCB‐1H
MOP (non‐trespasser) cyclist fall on MCB ‐ user error
KMOTMCB‐3H
MOP (non‐trespasser) motorcyclist fall on MCB ‐ proper use: other
KSTFMCB‐2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCB ‐ user violation
MOP (non‐trespasser) motorcyclist fall on MCB ‐ proper use: surface in need of KMOTMCB‐4H
maintenance
KMOTMCB‐1H
MOP (non‐trespasser) motorcyclist fall on MCB ‐ user error
KCYCMCB‐2H
MOP (non‐trespasser) cyclist fall on MCB ‐ user violation
KMOTMCB‐2H
MOP (non‐trespasser) motorcyclist fall on MCB ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on MCG
KSTFMCG‐3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCG ‐ proper use: other
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCG ‐ proper use: surface in need of KSTFMCG‐4H
maintenance
KCYCMCG‐3H
MOP (non‐trespasser) cyclist fall on MCG ‐ proper use: other
KCYCMCG‐4H
MOP (non‐trespasser) cyclist fall on MCG ‐ proper use: surface in need of maintenance
KSTFMCG‐1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCG ‐ user error
KCYCMCG‐1H
MOP (non‐trespasser) cyclist fall on MCG ‐ user error
KMOTMCG‐3H
MOP (non‐trespasser) motorcyclist fall on MCG ‐ proper use: other
KSTFMCG‐2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on MCG ‐ user violation
MOP (non‐trespasser) motorcyclist fall on MCG ‐ proper use: surface in need of KMOTMCG‐4H
maintenance
KMOTMCG‐1H
MOP (non‐trespasser) motorcyclist fall on MCG ‐ user error
KCYCMCG‐2H
MOP (non‐trespasser) cyclist fall on MCG ‐ user violation
KMOTMCG‐2H
MOP (non‐trespasser) motorcyclist fall on MCG ‐ user violation
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
LXs: MCB + CCTV
LXs: MCB + CCTV
1.50E‐04
5.96E‐05
0.0045
0.0014
5.74E‐04
0.0873
0.0262
0.39%
0.15%
23.45%
7.02%
D
D
LXs: MCB
0.0588
0.0233
3.551
1.063
D
‐
‐
‐
‐
LXs: MCB
0.0028
0.6647
0.0163
4.39%
D
‐
LXs: MCB
LXs: MCB
LXs: MCB
LXs: MCB
LXs: MCB
LXs: MCB
0.0023
0.0017
0.0013
8.52E‐04
7.10E‐04
3.67E‐04
0.5317
0.3988
0.2991
0.1994
0.1662
0.0858
0.0131
0.0098
0.0074
0.0049
0.0041
0.0021
3.51%
2.63%
1.98%
1.32%
1.10%
0.57%
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
LXs: MCB
2.84E‐04
0.0665
0.0016
0.44%
D
‐
LXs: MCB
LXs: MCB
LXs: MCB
1.42E‐04
1.22E‐04
5.64E‐05
0.0011
8.17E‐04
7.04E‐04
3.24E‐04
0.0165
0.0049
0.22%
0.19%
0.09%
4.42%
1.33%
D
D
D
LXs: MCG
0.0332
0.0286
0.0132
0.6693
0.2010
D
‐
‐
‐
‐
‐
LXs: MCG
6.87E‐04
0.1257
0.0031
0.83%
D
‐
LXs: MCG
LXs: MCG
LXs: MCG
LXs: MCG
LXs: MCG
LXs: MCG
5.49E‐04
4.12E‐04
3.09E‐04
2.06E‐04
1.72E‐04
8.07E‐05
0.1005
0.0754
0.0565
0.0377
0.0314
0.0148
0.0025
0.0019
0.0014
9.27E‐04
7.73E‐04
3.63E‐04
0.66%
0.50%
0.37%
0.25%
0.21%
0.10%
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
LXs: MCG
6.87E‐05
0.0126
3.09E‐04
0.08%
D
‐
LXs: MCG
LXs: MCG
LXs: MCG
3.43E‐05
2.69E‐05
1.36E‐05
0.0063
0.0049
0.0025
1.55E‐04
1.21E‐04
6.13E‐05
0.04%
0.03%
0.02%
D
D
D
‐
‐
‐
101
Table B1
National frequency
Hazardous event code
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46D
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46E
HEN‐46F
HEN‐46F
HEN‐46F
HEN‐46F
HEN‐46F
HEN‐46F
Precursor code
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on ABCL
KSTFABCL3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on ABCL ‐ proper use: other
MOP (non‐trespasser) pedestrian slip, trip, or fall on ABCL ‐ proper use: surface in need of KSTFABCL4H
maintenance
KCYCABCL3H
MOP (non‐trespasser) cyclist fall on ABCL ‐ proper use: other
KCYCABCL4H
MOP (non‐trespasser) cyclist fall on ABCL ‐ proper use: surface in need of maintenance
KSTFABCL1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on ABCL ‐ user error
KCYCABCL1H
MOP (non‐trespasser) cyclist fall on ABCL ‐ user error
KMOTABCL3H
MOP (non‐trespasser) motorcyclist fall on ABCL ‐ proper use: other
MOP (non‐trespasser) motorcyclist fall on ABCL ‐ proper use: surface in need of KMOTABCL4H
maintenance
KSTFABCL2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on ABCL ‐ user violation
KMOTABCL1H
MOP (non‐trespasser) motorcyclist fall on ABCL ‐ user error
KMOTABCL2H
MOP (non‐trespasser) motorcyclist fall on ABCL ‐ user violation
KCYCABCL2H
MOP (non‐trespasser) cyclist fall on ABCL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on AHB
KSTFAHB‐3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on AHB ‐ proper use: other
MOP (non‐trespasser) pedestrian slip, trip, or fall on AHB ‐ proper use: surface in need of KSTFAHB‐4H
maintenance
KCYCAHB‐3H
MOP (non‐trespasser) cyclist fall on AHB ‐ proper use: other
KCYCAHB‐4H
MOP (non‐trespasser) cyclist fall on AHB ‐ proper use: surface in need of maintenance
KSTFAHB‐1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on AHB ‐ user error
KCYCAHB‐1H
MOP (non‐trespasser) cyclist fall on AHB ‐ user error
KMOTAHB‐3H
MOP (non‐trespasser) motorcyclist fall on AHB ‐ proper use: other
KSTFAHB‐2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on AHB ‐ user violation
KMOTAHB‐4H
MOP (non‐trespasser) motorcyclist fall on AHB ‐ proper use: surface in need of maintenance
KMOTAHB‐1H
MOP (non‐trespasser) motorcyclist fall on AHB ‐ user error
KCYCAHB‐2H
MOP (non‐trespasser) cyclist fall on AHB ‐ user violation
KMOTAHB‐2H
MOP (non‐trespasser) motorcyclist fall on AHB ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on AOCL
KSTFAOCL3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on AOCL ‐ proper use: other
MOP (non‐trespasser) pedestrian slip, trip, or fall on AOCL ‐ proper use: surface in need of KSTFAOCL4H
maintenance
KCYCAOCL3H
MOP (non‐trespasser) cyclist fall on AOCL ‐ proper use: other
KCYCAOCL4H
MOP (non‐trespasser) cyclist fall on AOCL ‐ proper use: surface in need of maintenance
KSTFAOCL1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on AOCL ‐ user error
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
LXs: ABCL
0.0015
0.2597
0.0793
0.0064
0.0020
1.72%
0.52%
D
‐
‐
LXs: ABCL
9.54E‐04
0.0496
0.0012
0.33%
D
‐
LXs: ABCL
LXs: ABCL
LXs: ABCL
LXs: ABCL
LXs: ABCL
7.63E‐04
5.72E‐04
4.29E‐04
2.86E‐04
2.38E‐04
0.0397
0.0298
0.0223
0.0149
0.0124
9.76E‐04
7.32E‐04
5.49E‐04
3.66E‐04
3.05E‐04
0.26%
0.20%
0.15%
0.10%
0.08%
D
D
D
D
D
‐
‐
‐
‐
‐
LXs: ABCL
9.54E‐05
0.0050
1.22E‐04
0.03%
D
‐
LXs: ABCL
LXs: ABCL
LXs: ABCL
LXs: ABCL
4.84E‐05
4.77E‐05
1.89E‐05
1.61E‐05
4.79E‐04
6.19E‐05
6.10E‐05
2.42E‐05
2.06E‐05
0.0177
0.0053
0.02%
0.02%
0.01%
0.01%
4.75%
1.43%
D
D
D
D
LXs: AHB
0.0025
0.0025
9.84E‐04
8.39E‐04
0.7189
0.2165
D
‐
‐
‐
‐
‐
‐
LXs: AHB
2.99E‐04
0.1353
0.0033
0.89%
D
‐
LXs: AHB
LXs: AHB
LXs: AHB
LXs: AHB
LXs: AHB
LXs: AHB
LXs: AHB
LXs: AHB
LXs: AHB
LXs: AHB
2.39E‐04
1.80E‐04
1.35E‐04
8.98E‐05
7.48E‐05
3.24E‐05
2.99E‐05
1.50E‐05
1.08E‐05
5.94E‐06
9.20E‐04
0.0027
0.0020
0.0015
9.98E‐04
8.32E‐04
3.60E‐04
3.33E‐04
1.66E‐04
1.20E‐04
6.60E‐05
0.0086
0.0026
0.71%
0.54%
0.40%
0.27%
0.22%
0.10%
0.09%
0.04%
0.03%
0.02%
2.31%
0.71%
D
D
D
D
D
D
D
D
D
D
LXs: AOCL
0.1082
0.0812
0.0609
0.0406
0.0338
0.0146
0.0135
0.0068
0.0049
0.0027
0.3505
0.1076
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
LXs: AOCL
5.75E‐04
0.0673
0.0017
0.44%
D
‐
LXs: AOCL
LXs: AOCL
LXs: AOCL
4.60E‐04
3.45E‐04
2.59E‐04
0.0538
0.0404
0.0303
0.0013
9.93E‐04
7.45E‐04
0.36%
0.27%
0.20%
D
D
D
‐
‐
‐
102
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐46F
HEN‐46F
KCYCAOCL1H
KMOTAOCL3H
HEN‐46F
HEN‐46F
HEN‐46F
HEN‐46F
HEN‐46F
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46G
HEN‐46H
HEN‐46H
HEN‐46H
HEN‐46H
HEN‐46H
HEN‐46H
HEN‐46H
HEN‐46H
HEN‐46H
HEN‐46H
Cause precursor description
MOP (non‐trespasser) cyclist fall on AOCL ‐ user error
MOP (non‐trespasser) motorcyclist fall on AOCL ‐ proper use: other
MOP (non‐trespasser) motorcyclist fall on AOCL ‐ proper use: surface in need of KMOTAOCL4H
maintenance
KMOTAOCL1H
MOP (non‐trespasser) motorcyclist fall on AOCL ‐ user error
KSTFAOCL2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on AOCL ‐ user violation
KMOTAOCL2H
MOP (non‐trespasser) motorcyclist fall on AOCL ‐ user violation
KCYCAOCL2H
MOP (non‐trespasser) cyclist fall on AOCL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on UWC + MWL
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC + MWL ‐ proper use: surface in KSTFUWCM4H
need of maintenance
KSTFUWCM3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC + MWL ‐ proper use: other
KSTFUWCM2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC + MWL ‐ user violation
KSTFUWCM1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC + MWL ‐ user error
KMOTUWCM3H MOP (non‐trespasser) motorcyclist fall on UWC + MWL ‐ proper use: other
MOP (non‐trespasser) motorcyclist fall on UWC + MWL ‐ proper use: surface in need of KMOTUWCM4H
maintenance
KCYCUWCM3H
MOP (non‐trespasser) cyclist fall on UWC + MWL ‐ proper use: other
MOP (non‐trespasser) cyclist fall on UWC + MWL ‐ proper use: surface in need of KCYCUWCM4H
maintenance
KMOTUWCM1H MOP (non‐trespasser) motorcyclist fall on UWC + MWL ‐ user error
KCYCUWCM1H
MOP (non‐trespasser) cyclist fall on UWC + MWL ‐ user error
KMOTUWCM2H MOP (non‐trespasser) motorcyclist fall on UWC + MWL ‐ user violation
KCYCUWCM2H
MOP (non‐trespasser) cyclist fall on UWC + MWL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on UWC + T
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC + T ‐ proper use: surface in need KSTFUWCT4H
of maintenance
KSTFUWCT3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC + T ‐ proper use: other
KSTFUWCT2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC + T ‐ user violation
KSTFUWCT1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC + T ‐ user error
KMOTUWCT3H
MOP (non‐trespasser) motorcyclist fall on UWC + T ‐ proper use: other
MOP (non‐trespasser) motorcyclist fall on UWC + T ‐ proper use: surface in need of KMOTUWCT4H
maintenance
KCYCUWCT3H
MOP (non‐trespasser) cyclist fall on UWC + T ‐ proper use: other
KCYCUWCT4H
MOP (non‐trespasser) cyclist fall on UWC + T ‐ proper use: surface in need of maintenance
KMOTUWCT1H
MOP (non‐trespasser) motorcyclist fall on UWC + T ‐ user error
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
LXs: AOCL
LXs: AOCL
1.73E‐04
1.44E‐04
0.0202
0.0168
4.96E‐04
4.14E‐04
0.13%
0.11%
D
D
‐
‐
LXs: AOCL
5.75E‐05
0.0067
1.65E‐04
0.04%
D
‐
LXs: AOCL
LXs: AOCL
LXs: AOCL
LXs: AOCL
2.88E‐05
1.68E‐05
1.14E‐05
5.61E‐06
0.0034
0.0020
0.0013
6.56E‐04
0.2584
8.27E‐05
4.84E‐05
3.28E‐05
1.61E‐05
0.0064
0.02%
0.01%
0.01%
0.00%
1.71%
D
D
D
D
‐
‐
‐
‐
‐
LXs: UWC + MWL
0.0013
0.1241
0.0031
0.82%
D
‐
LXs: UWC + MWL
LXs: UWC + MWL
LXs: UWC + MWL
LXs: UWC + MWL
5.54E‐04
2.20E‐04
1.85E‐04
1.85E‐04
0.0532
0.0211
0.0177
0.0177
0.0013
5.19E‐04
4.36E‐04
4.36E‐04
0.35%
0.14%
0.12%
0.12%
D
D
D
D
‐
‐
‐
‐
LXs: UWC + MWL
8.08E‐05
0.0078
1.91E‐04
0.05%
D
‐
LXs: UWC + MWL
5.99E‐05
0.0058
1.41E‐04
0.04%
D
‐
LXs: UWC + MWL
4.28E‐05
0.0041
1.01E‐04
0.03%
D
‐
LXs: UWC + MWL
LXs: UWC + MWL
LXs: UWC + MWL
LXs: UWC + MWL
3.77E‐05
2.00E‐05
8.98E‐06
5.66E‐06
0.0036
0.0019
8.62E‐04
5.43E‐04
0.6420
8.90E‐05
4.72E‐05
2.12E‐05
1.34E‐05
0.0158
0.02%
0.01%
0.01%
0.00%
4.24%
D
D
D
D
‐
‐
‐
‐
‐
LXs: UWC + T
1.87E‐04
0.3119
0.0077
2.06%
D
‐
LXs: UWC + T
LXs: UWC + T
LXs: UWC + T
LXs: UWC + T
8.02E‐05
2.75E‐05
2.67E‐05
2.67E‐05
0.1337
0.0458
0.0446
0.0446
0.0033
0.0011
0.0011
0.0011
0.88%
0.30%
0.29%
0.29%
D
D
D
D
‐
‐
‐
‐
LXs: UWC + T
1.17E‐05
0.0195
4.79E‐04
0.13%
D
‐
LXs: UWC + T
LXs: UWC + T
LXs: UWC + T
8.67E‐06
6.19E‐06
5.45E‐06
0.0145
0.0103
0.0091
3.56E‐04
2.54E‐04
2.24E‐04
0.10%
0.07%
0.06%
D
D
D
‐
‐
‐
103
Table B1
National frequency
Hazardous event code
HEN‐46H
HEN‐46H
HEN‐46H
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46I
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
HEN‐46J
Precursor code
Cause precursor description
KCYCUWCT1H
MOP (non‐trespasser) cyclist fall on UWC + T ‐ user error
KMOTUWCT2H
MOP (non‐trespasser) motorcyclist fall on UWC + T ‐ user violation
KCYCUWCT2H
MOP (non‐trespasser) cyclist fall on UWC + T ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on UWC
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC ‐ proper use: surface in need of KSTFUWC‐4H
maintenance
KSTFUWC‐3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC ‐ proper use: other
KMOTUWC‐3H
MOP (non‐trespasser) motorcyclist fall on UWC ‐ proper use: other
KSTFUWC‐1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC ‐ user error
KSTFUWC‐2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on UWC ‐ user violation
MOP (non‐trespasser) motorcyclist fall on UWC ‐ proper use: surface in need of KMOTUWC‐4H
maintenance
KCYCUWC‐3H
MOP (non‐trespasser) cyclist fall on UWC ‐ proper use: other
KCYCUWC‐4H
MOP (non‐trespasser) cyclist fall on UWC ‐ proper use: surface in need of maintenance
KMOTUWC‐1H
MOP (non‐trespasser) motorcyclist fall on UWC ‐ user error
KCYCUWC‐1H
MOP (non‐trespasser) cyclist fall on UWC ‐ user error
KMOTUWC‐2H
MOP (non‐trespasser) motorcyclist fall on UWC ‐ user violation
KCYCUWC‐2H
MOP (non‐trespasser) cyclist fall on UWC ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist slip, trip, or fall on OC
KSTFOC‐‐3H
MOP (non‐trespasser) pedestrian slip, trip, or fall on OC ‐ proper use: other
MOP (non‐trespasser) pedestrian slip, trip, or fall on OC ‐ proper use: surface in need of KSTFOC‐‐4H
maintenance
KCYCOC‐‐3H
MOP (non‐trespasser) cyclist fall on OC ‐ proper use: other
MOP (non‐trespasser) cyclist fall on OC ‐ proper use: crossing surface in need of KCYCOC‐‐4H
maintenance
KSTFOC‐‐1H
MOP (non‐trespasser) pedestrian slip, trip, or fall on OC ‐ user error
KCYCOC‐‐1H
MOP (non‐trespasser) cyclist fall on OC ‐ user error
KMOTOC‐‐3H
MOP (non‐trespasser) motorcyclist fall on OC ‐ proper use: other
KMOTOC‐‐4H
MOP (non‐trespasser) motorcyclist fall on OC ‐ proper use: surface in need of maintenance
KMOTOC‐‐1H
MOP (non‐trespasser) motorcyclist fall on OC ‐ user error
KMOTOC‐‐2H
MOP (non‐trespasser) motorcyclist fall on OC ‐ user violation
KSTFOC‐‐2H
MOP (non‐trespasser) pedestrian slip, trip, or fall on OC ‐ user violation
KCYCOC‐‐2H
MOP (non‐trespasser) cyclist fall on OC ‐ user violation
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
LXs: UWC + T
LXs: UWC + T
LXs: UWC + T
2.89E‐06
1.30E‐06
7.07E‐07
0.0048
0.0022
0.0012
0.6974
1.19E‐04
5.33E‐05
2.90E‐05
0.0172
0.03%
0.01%
0.01%
4.61%
D
D
D
‐
‐
‐
‐
LXs: UWC
3.87E‐04
0.3418
0.0084
2.26%
D
‐
LXs: UWC
LXs: UWC
LXs: UWC
LXs: UWC
1.66E‐04
5.53E‐05
5.53E‐05
5.01E‐05
0.1465
0.0488
0.0488
0.0442
0.0036
0.0012
0.0012
0.0011
0.97%
0.32%
0.32%
0.29%
D
D
D
D
‐
‐
‐
‐
LXs: UWC
2.42E‐05
0.0214
5.25E‐04
0.14%
D
‐
LXs: UWC
LXs: UWC
LXs: UWC
LXs: UWC
LXs: UWC
LXs: UWC
1.79E‐05
1.28E‐05
1.13E‐05
5.98E‐06
2.69E‐06
1.29E‐06
1.29E‐04
3.90E‐04
2.78E‐04
2.45E‐04
1.30E‐04
5.84E‐05
2.80E‐05
5.65E‐04
1.74E‐04
0.10%
0.07%
0.07%
0.03%
0.02%
0.01%
0.15%
0.05%
D
D
D
D
D
D
LXs: OC
0.0158
0.0113
0.0100
0.0053
0.0024
0.0011
0.0230
0.0071
D
‐
‐
‐
‐
‐
‐
‐
‐
LXs: OC
8.06E‐05
0.0044
1.09E‐04
0.03%
D
‐
LXs: OC
6.45E‐05
0.0035
8.72E‐05
0.02%
D
‐
LXs: OC
4.83E‐05
0.0027
6.54E‐05
0.02%
D
‐
LXs: OC
LXs: OC
LXs: OC
LXs: OC
LXs: OC
LXs: OC
LXs: OC
LXs: OC
3.63E‐05
2.42E‐05
2.01E‐05
8.06E‐06
4.03E‐06
1.60E‐06
9.70E‐07
3.23E‐07
0.0020
0.0013
0.0011
4.43E‐04
2.22E‐04
8.79E‐05
5.34E‐05
1.78E‐05
4.91E‐05
3.27E‐05
2.73E‐05
1.09E‐05
5.45E‐06
2.16E‐06
1.31E‐06
4.38E‐07
0.01%
0.01%
0.01%
0.00%
0.00%
0.00%
0.00%
0.00%
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
104
Table B1
National frequency
Hazardous event code
HEN‐46K
Precursor code
Cause precursor description
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0862
0.0021
0.57%
HEN‐46L
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP + MWL crossing
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP + MWL crossing ‐ proper KFPMFALL3H
use: other
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP + MWL crossing ‐ proper KFPMFALL4H
use: surface in need of maintenance
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP + MWL crossing ‐ user KFPMFALL1H
error
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP + MWL crossing ‐ user KFPMFALL2H
violation
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP crossing
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP crossing ‐ proper use: KFPCFALL3H
other
KFPCFALL1H
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP crossing ‐ user error
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP crossing ‐ proper use: KFPCFALL4H
surface in need of maintenance
KFPCFALL2H
MOP (non‐trespasser) pedestrian or cyclist slip, trip, or fall on FP crossing ‐ user violation
HEN‐48
HEN‐48
MOP (non‐trespasser) exposure to fire on railway infrastructure
KRCIFIRE‐E
MOP (non‐trespasser) exposed to fire on railway infrastructure
Trk m
1.61E‐09
0.0500
0.0500
0.0015
0.0015
100.00%
100.00%
E
‐
‐
HEN‐49
HEN‐49
MOP (non‐trespasser) exposure to explosion on railway infrastructure
KRCIEXPL‐E
MOP (non‐trespasser) exposed to explosion on railway infrastructure
Trk m
1.61E‐09
0.0500
0.0500
0.3000
0.3000
100.00%
100.00%
E
‐
‐
HEN‐50
HEN‐50
MOP (non‐trespasser) observes electrical arcing
KRCIARC‐‐E
MOP (non‐trespasser) observes electrical arcing from railway infrastructure
Trk m
6.44E‐09
0.2000
0.2000
0.0038
0.0038
100.00%
100.00%
D
‐
‐
HEN‐51
HEN‐51
MOP (non‐trespasser) electric shock (OHLE)
KOHLCON‐‐H
MOP (non‐trespasser) electric shock ‐ contact with OHLE
Trk m
1.38E‐08
0.4286
0.4286
0.0479
0.0479
100.00%
100.00%
D
‐
‐
HEN‐52
HEN‐52
MOP (non‐trespasser) electric shock (conductor rail)
KCONDCON‐H
MOP (non‐trespasser) electric shock ‐ contact with conductor rail
Trk m
3.47E‐09
0.1077
0.1077
0.0681
0.0681
100.00%
100.00%
E
‐
‐
HEN‐53
MOP (non‐trespasser) electric shock (non‐traction supplies)
MOP (non‐trespasser) electric shock: contact with non‐traction supplies inside railway KSHKNTS‐‐E
infrastructure
0.2000
7.33E‐04
100.00%
0.2000
7.33E‐04
100.00%
HEN‐46K
HEN‐46K
HEN‐46K
HEN‐46K
HEN‐46L
HEN‐46L
HEN‐46L
HEN‐46L
HEN‐53
Version 7.1 — August 2011
‐
LXs: FP + MWL
8.94E‐04
0.0357
8.79E‐04
0.24%
D
‐
LXs: FP + MWL
5.96E‐04
0.0238
5.86E‐04
0.16%
D
‐
LXs: FP + MWL
5.96E‐04
0.0238
5.86E‐04
0.16%
D
‐
LXs: FP + MWL
7.09E‐05
0.0028
6.98E‐05
0.02%
D
‐
1.522
0.0374
10.05%
‐
LXs: FP
2.82E‐04
0.6309
0.0155
4.17%
D
‐
LXs: FP
1.88E‐04
0.4206
0.0103
2.78%
D
‐
LXs: FP
1.88E‐04
0.4206
0.0103
2.78%
D
‐
LXs: FP
2.24E‐05
0.0501
0.0012
0.33%
D
‐
Trk m
6.44E‐09
‐
D
‐
105
Table B1
National frequency
Hazardous event code
HEN‐54
HEN‐54
Precursor code
Cause precursor description
MOP (non‐trespasser) exposure to hazardous substances on railway infrastructure
MOP (non‐trespasser) exposed to hazardous substance leakage on railway infrastructure KHAZORCI‐E
other than station
HEN‐55
HEN‐55
HEN‐55
HEN‐55
HEN‐55
HEN‐55
HEN‐55
HEN‐55
Passenger struck by / contact with / trapped in object at station
PPOPAS‐‐‐E
Passenger injury due to being hit accidentally by other passengers on platform or station
PCONOBJRWE
Passenger contact with other object on railway premises eg head strike on station sign
PTRAPTCKGE
Passenger trapped/injured in ticket gates
PPOBST‐‐‐E
Passenger injury due to being hit by objects not on platform
PPLSOB‐‐‐E
Passenger injury due to being hit by objects while on platform
PPLSPL‐‐‐E
Passenger injury due to being hit by platform vehicle while on platform
PPVEST‐‐‐E
Passenger injury due to being hit by vehicle not on platform
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
Workforce struck by / contact with / trapped in object not at station
GTWCRAIL‐E
Infrastructure worker struck/crushed by rail
GTWOBSTR‐P
Infrastructure worker struck by moving object
GTWPOWER‐H
Infrastructure worker injured directly by power/hand tools
GTWSTSLE‐E
Infrastructure worker struck/crushed by sleepers
GTWL‐M‐C‐H
Infrastructure worker injury while lifting/moving/carrying
GTWSTROB‐H
Infrastructure worker injury due to striking/contact with object
GTWSHARP‐H
Infrastructure worker injury from contact with sharp object (including knives)
GTWSTGRITP
Infrastructure worker injury due to foreign body entering the eye
GTWSTCLIP
Infrastructure worker injury due to being struck by track clips
Infrastructure worker injury due to being struck by bars whilst barring rails or other large GTWSTBAR‐P
object
GOWSTROB‐H
Other workforce injury due to striking/contact with object
GOWSHARP‐H
Other workforce injury from contact with sharp object (including knives)
GOWOBSTR‐P
Other workforce struck by moving object
GTWTREAD‐H
Infrastructure worker injury due to treading on object/into troughing
GOWPOWER‐H
Other workforce injured directly by power/hand tools
GTDSTROB‐H
Train crew (driver) injury due to striking/contact with object
GOWL‐M‐C‐H
Other workforce injury while lifting/moving/carrying
GTDCOUPL‐H
Train crew (driver) injury while coupling/uncoupling rail vehicles
GTDSHARP‐H
Train crew (driver) injury from contact with sharp object (including knives)
GOWCOUPL‐H
Other workforce injury while coupling/uncoupling rail vehicles
GTCL‐M‐C‐H
Train crew (other) injury while lifting/moving/carrying
GTDL‐M‐C‐H
Train crew (driver) injury while lifting/moving/carrying
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
Version 7.1 — August 2011
Normaliser
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.2000
0.1007
100.00%
‐
Trk m
6.44E‐09
0.2000
0.1007
100.00%
D
‐
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
3.69E‐08
1.30E‐07
1.71E‐07
3.52E‐08
2.38E‐08
2.49E‐09
2.42E‐09
496.4
45.59
160.4
211.2
43.54
29.48
3.085
2.994
1.492
0.4607
0.4012
0.3859
0.1089
0.0737
0.0312
0.0303
100.00%
30.88%
26.89%
25.87%
7.30%
4.94%
2.09%
2.03%
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
9.41E‐07
2.56E‐06
1.88E‐06
3.70E‐07
1.04E‐06
7.10E‐07
9.29E‐07
3.16E‐07
2.41E‐07
578.9
51.64
140.3
103.3
20.33
56.90
39.00
51.00
17.33
13.21
2.883
0.7632
0.6007
0.4423
0.3005
0.2435
0.1173
0.0885
0.0742
0.0565
100.00%
26.47%
20.83%
15.34%
10.42%
8.45%
4.07%
3.07%
2.57%
1.96%
D
D
D
D
D
D
D
D
D
80%
80%
80%
100%
80%
80%
80%
80%
80%
100%
Infra worker hrs
1.70E‐07
9.356
0.0400
1.39%
D
100%
Pass jour
Pass jour
Pass jour
Infra worker hrs
Pass jour
Tot trn km
Pass jour
Tot trn km
Tot trn km
Pass jour
Pass trn km
Tot trn km
9.72E‐09
1.51E‐08
1.19E‐08
1.46E‐07
2.59E‐09
6.10E‐09
2.43E‐09
4.19E‐09
3.59E‐09
1.46E‐09
2.05E‐09
1.79E‐09
12.03
18.67
14.67
8.000
3.200
3.400
3.000
2.333
2.000
1.800
1.000
1.000
0.0362
0.0324
0.0254
0.0139
0.0137
0.0059
0.0052
0.0040
0.0035
0.0031
0.0017
0.0017
1.25%
1.12%
0.88%
0.48%
0.48%
0.20%
0.18%
0.14%
0.12%
0.11%
0.06%
0.06%
D
D
D
D
D
D
D
D
D
D
D
D
14%
14%
14%
80%
14%
1%
14%
1%
1%
14%
‐
1%
106
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
HEN‐56
GOWSTGRITP
GTCOBSTR‐P
GOWTREAD‐H
GTDOBSTR‐P
GTWCONPE‐H
GTWCOUPL‐H
GTCSHARP‐H
GTCCOUPL‐H
GTDTREAD‐H
GTCSTROB‐H
GOWCONPE‐H
GTDSTGRITP
GTCTREAD‐H
GTDCONPE‐H
GTCCONPE‐H
Other workforce injury due to foreign body entering the eye
Train crew (other) struck by moving object
Other workforce injury due to treading on object/into troughing
Train crew (driver) struck by moving object
Infrastructure worker injury due to contact with other person
Infrastructure worker injury while coupling/uncoupling rail vehicles
Train crew (other) injury from contact with sharp object (including knives)
Train crew (other) injury while coupling/uncoupling rail vehicles
Train crew (driver) injury due to treading on object/into troughing
Train crew (other) injury due to striking/contact with object
Other workforce injury due to contact with other person
Train crew (driver) injury due to foreign body entering the eye
Train crew (other) injury due to treading on object/into troughing
Train crew (driver) injury due to contact with other person
Train crew (other) injury due to contact with other person
HEN‐57
HEN‐57
Passenger scalds or burns due to contact with hot object (not on train) PBURNOTTRE
Passenger scalds or burns not on train HEN‐58
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass jour
Pass trn km
Pass jour
Tot trn km
Infra worker hrs
Infra worker hrs
Pass trn km
Pass trn km
Tot trn km
Pass trn km
Pass jour
Tot trn km
Pass trn km
Tot trn km
Pass trn km
8.09E‐10
1.37E‐09
5.39E‐10
1.08E‐09
1.09E‐08
3.64E‐09
8.19E‐10
6.83E‐10
5.98E‐10
4.10E‐10
1.16E‐10
2.56E‐10
1.18E‐10
4.19E‐11
1.27E‐11
1.000
0.6667
0.6667
0.6000
0.6000
0.2000
0.4000
0.3333
0.3333
0.2000
0.1429
0.1429
0.0576
0.0233
0.0062
0.0017
0.0012
0.0012
0.0010
0.0010
8.56E‐04
6.94E‐04
5.78E‐04
5.78E‐04
3.47E‐04
2.48E‐04
2.48E‐04
9.99E‐05
4.05E‐05
1.07E‐05
0.06%
0.04%
0.04%
0.04%
0.04%
0.03%
0.02%
0.02%
0.02%
0.01%
0.01%
0.01%
0.00%
0.00%
0.00%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
14%
‐
14%
1%
80%
100%
‐
‐
1%
‐
14%
1%
‐
1%
‐
Pass jour
5.36E‐09
6.630
6.630
0.0116
0.0116
100.00%
100.00%
D
‐
‐
MOP (non‐trespasser) injury from objects/structures (eg bridges, steps, subways) other than in stations whilst on railway infrastructure
MOP (non‐trespasser) injured from objects/structures (other than stations) whilst on KBRISTSUBE
Pass jour
8.09E‐10
railway infrastructure
1.000
0.0069
#REF!
1.000
0.0069
#REF!
D
‐
HEN‐59
HEN‐59
MOP (non‐trespasser) struck by / contact with / trapped in object at station
KCONOBJRWE
MOP (non‐trespasser) contact with other object on railway premises
HEN‐60
HEN‐60
HEN‐60
HEN‐60
HEN‐60
Workforce exposure to noise (not on train)
GOWEXPNO‐E
Other workforce exposed to noise (not on train)
GTWEXPNO‐E
Infrastructure worker exposed to noise (not on train)
GTCEXPNO‐E
Train crew (other) exposed to noise (not on train)
GTDEXPNO‐E
Train crew (driver) exposed to noise (not on train)
HEN‐61
HEN‐61
Passenger exposure to noise (not on train)
PEXPONOISE
Passenger exposed to noise
HEN‐58
Version 7.1 — August 2011
‐
Pass jour
1.16E‐08
14.33
14.33
0.0473
0.0473
100.00%
100.00%
D
‐
‐
Pass jour
Infra worker hrs
Pass trn km
Tot trn km
1.08E‐09
1.30E‐08
1.23E‐09
2.56E‐10
2.790
1.333
0.7143
0.6000
0.1429
0.0033
0.0016
8.52E‐04
7.15E‐04
1.70E‐04
100.00%
47.78%
25.60%
21.50%
5.12%
D
D
D
D
22%
4%
80%
‐
1%
Pass jour
3.12E‐10
0.3860
0.3860
3.86E‐04
3.86E‐04
100.00%
100.00%
D
‐
‐
107
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
HEN‐62
Passenger on‐train incident (excluding sudden train movement & assaults)
POTSTF‐‐‐E
Passenger on‐train: slip, trip or fall
POTOHEAT‐E
Passenger on‐train: fainting/distress (not leading to evacuation)
POTSTFLL‐E
Passenger on‐train: struck/crushed by moving object
POTINDOO‐E
Passenger on‐train: caught by internal train doors
POTSCOBN‐E
Passenger on‐train: scald/burn
POTSTROB‐E
Passenger on‐train: strike/crush against object
POTOTH‐‐‐E
Passenger on‐train: other cause
POTCAUSH‐E
Passenger on‐train: caught on sharp object
POTOTDEF‐E
Passenger on‐train: other train defect
POTINSB‐‐E
Passenger on‐train: animal/insect bite
POTDROPL‐E
Passenger on‐train: struck by droplight
POTELECT‐E Passenger on‐train: electric shock
POTCAUNS‐E
Passenger on‐train: caught on needle/syringe
POTHAZSB‐E Passenger on‐train: exposure to hazardous substances
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
Workforce on‐train incident (excluding sudden train movement & assaults)
GTCOTOBJ‐E
Train crew (other) on‐train: strike against object
GTCOTLUG‐E
Train crew (other) on‐train: struck by moving object
GTCOTSTF‐E
Train crew (other) on‐train: slip, trip or fall
GTCOTINT‐E
Train crew (other) on‐train: caught by internal train doors
GTDOTDEF‐E
Train crew (driver) on‐train: other train defect
GTCOTSCA‐E
Train crew (other) on‐train: scald/burn
GTCOTCAT‐E
Train crew (other) on‐train: injured by catering trolley
GTCOTDEF‐E
Train crew (other) on‐train: other train defect
GTDOTOBJ‐E
Train crew (driver) on‐train: strike against object
GTCOTSHA‐E
Train crew (other) on‐train: caught by sharp object
GTCDROPL‐E
Train crew (other) on‐train: struck by droplight
GTDOTINT‐E
Train crew (driver) on‐train: caught by internal train doors
Train crew (other) on‐train: fainting/distress due to train overheating (not leading to GTCOHEAT‐E
evacuation)
GTDOTSTF‐E
Train crew (driver) on‐train: slip, trip or fall
GTCOTHAZ‐E
Train crew (other) on‐train: exposure to hazardous substance
GTDOTHAZ‐E
Train crew (driver) on‐train: exposure to hazardous substance
GTDOTLUG‐E
Train crew (driver) on‐train: struck by moving object
GOWOTOBJ‐E
Other workforce on‐train: strike against object
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
Cause precursor description
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
Pass km
3.29E‐09
1.54E‐10
3.66E‐09
3.10E‐09
1.57E‐09
1.41E‐09
3.51E‐10
1.16E‐09
8.81E‐10
9.19E‐11
2.30E‐10
1.21E‐10
6.11E‐11
5.75E‐11
813.3
165.8
7.789
184.6
156.2
79.12
70.94
17.70
58.37
44.46
4.636
11.59
6.111
3.083
2.902
3.401
1.256
0.6840
0.3862
0.3267
0.1655
0.1484
0.1342
0.1221
0.0930
0.0351
0.0242
0.0128
0.0064
0.0061
100.00%
36.94%
20.11%
11.35%
9.61%
4.87%
4.36%
3.94%
3.59%
2.73%
1.03%
0.71%
0.38%
0.19%
0.18%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Pass trn km
Pass trn km
Pass trn km
Pass trn km
Tot trn km
Pass trn km
Pass trn km
Pass trn km
Tot trn km
Pass trn km
Pass trn km
Tot trn km
2.83E‐07
2.30E‐07
2.14E‐07
2.08E‐07
1.75E‐07
2.61E‐07
1.44E‐07
1.33E‐07
8.42E‐08
1.42E‐07
5.80E‐08
3.89E‐08
1200.1
138.2
112.3
104.3
101.5
97.40
127.3
70.33
64.73
46.93
69.33
28.33
21.67
2.262
0.2808
0.2282
0.2119
0.2062
0.1979
0.1542
0.1429
0.1315
0.0953
0.0840
0.0576
0.0440
100.00%
12.41%
10.09%
9.37%
9.12%
8.75%
6.82%
6.32%
5.81%
4.21%
3.71%
2.54%
1.95%
D
D
D
D
D
D
D
D
D
D
D
D
0.7%
‐
‐
‐
‐
1%
‐
‐
‐
1%
‐
‐
1%
Pass trn km
9.10E‐10
0.4444
0.0390
1.73%
D
‐
Tot trn km
Pass trn km
Tot trn km
Tot trn km
Pass jour
3.17E‐08
2.53E‐08
2.21E‐08
2.08E‐08
8.89E‐09
17.67
12.33
12.33
11.60
11.00
0.0359
0.0251
0.0251
0.0236
0.0223
1.59%
1.11%
1.11%
1.04%
0.99%
D
D
D
D
D
1%
‐
1%
‐
7%
108
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
Normaliser
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
GTCOTBIT‐E
GTDOTSHA‐E
GTDDROPL‐E
GTCOTOTH‐E
GTCOTFOO‐E
GTCOTELE‐E
GTDOTFOO‐E GTDOTOTH‐E
GOWOTSTF‐E
GOWOTINT‐E
GTCOTSYR‐E
GOWOTLUG‐E
GOWOTDEF‐E
GOWOTSHA‐E
GTDOTNOI‐E
HEN‐63
GTDOHEAT‐E
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
GOWOTSYR‐E
GTDOTBIT‐E
GTDOTELE‐E
GOWDROPL‐E
GTWOTSTF‐E
GOWOTHAZ‐E
GTCOTNOI‐E
GTDOTSCA‐E
GOWOTOTH‐E
HEN‐63
GOWOHEAT‐E
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
GTWOTDEF‐E
GOWOTCAT‐E
GOWOTSCA‐E
GTDOTSYR‐E
GTWOTLUG‐E
GTWOTOBJ‐E
GTDOTCAT‐E
GTWOTINT‐E
Train crew (other) on‐train: animal/insect bite
Train crew (driver) on‐train: caught by sharp object
Train crew (driver) on‐train: struck by droplight
Train crew (other) on‐train: other
Train crew (other) on‐train: struck by flying object from outside train
Train crew (other) on‐train: electric shock
Train crew (driver) on‐train: struck by flying object from outside train
Train crew (driver) on‐train: other
Other workforce on‐train: slip, trip or fall
Other workforce on‐train: caught by internal train doors
Train crew (other) on‐train: caught on needle/syringe
Other workforce on‐train: struck by moving object
Other workforce on‐train: other train defect
Other workforce on‐train: caught by sharp object
Train crew (driver) on‐train: exposed to noise
Train crew (driver) on‐train: fainting/distress due to train overheating (not leading to evacuation)
Other workforce on‐train: caught on needle/syringe
Train crew (driver) on‐train: animal/insect bite
Train crew (driver) on‐train: electric shock
Other workforce on‐train: struck by droplight
Infrastructure worker on‐train: slip, trip or fall
Other workforce on‐train: exposure to hazardous substance
Train crew (other) on‐train: exposed to noise
Train crew (driver) on‐train: scald/burn
Other workforce on‐train: other
Other workforce on‐train: fainting/distress due to train overheating (not leading to evacuation)
Infrastructure worker on‐train: other train defect
Other workforce on‐train: injured by catering trolley
Other workforce on‐train: scald/burn
Train crew (driver) on‐train: caught on needle/syringe
Infrastructure worker on‐train: struck by moving object
Infrastructure worker on‐train: strike against object
Train crew (driver) on‐train: injured by catering trolley
Infrastructure worker on‐train: caught by internal train doors
Version 7.1 — August 2011
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Tot trn km
Tot trn km
Pass trn km
Pass trn km
Pass trn km
Tot trn km
Tot trn km
Pass jour
Pass jour
Pass trn km
Pass jour
Pass jour
Pass jour
Tot trn km
3.62E‐08
3.11E‐08
1.79E‐08
1.98E‐08
1.84E‐08
2.73E‐08
1.36E‐08
1.26E‐08
4.69E‐09
4.31E‐09
1.02E‐08
3.50E‐09
3.23E‐09
5.39E‐09
1.02E‐08
17.67
17.33
10.00
9.667
9.000
13.33
7.600
6.997
5.800
5.333
5.000
4.333
4.000
6.667
5.667
0.0214
0.0210
0.0203
0.0196
0.0183
0.0161
0.0154
0.0142
0.0118
0.0108
0.0102
0.0088
0.0081
0.0081
0.0069
0.95%
0.93%
0.90%
0.87%
0.81%
0.71%
0.68%
0.63%
0.52%
0.48%
0.45%
0.39%
0.36%
0.36%
0.30%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
‐
1%
1%
‐
‐
‐
‐
1%
7%
7%
‐
7%
7%
7%
1%
Tot trn km
1.34E‐10
0.0744
0.0065
0.29%
D
1%
Pass jour
Tot trn km
Tot trn km
Pass jour
Infra worker hrs
Pass jour
Pass trn km
Tot trn km
Pass jour
2.43E‐09
8.62E‐09
6.58E‐09
1.62E‐09
2.60E‐08
1.08E‐09
3.41E‐09
2.87E‐09
6.47E‐10
3.000
4.800
3.667
2.000
1.429
1.333
1.667
1.600
0.8000
0.0061
0.0058
0.0044
0.0041
0.0029
0.0027
0.0020
0.0019
0.0016
0.27%
0.26%
0.20%
0.18%
0.13%
0.12%
0.09%
0.09%
0.07%
D
D
D
D
D
D
D
D
D
‐
1%
1%
7%
80%
7%
‐
1%
7%
Pass jour
1.32E‐11
0.0163
0.0014
0.06%
D
7%
Infra worker hrs
Pass jour
Pass jour
Tot trn km
Infra worker hrs
Infra worker hrs
Tot trn km
Infra worker hrs
7.81E‐09
3.23E‐10
4.62E‐10
5.13E‐10
4.05E‐09
3.64E‐09
2.56E‐10
2.60E‐09
0.4286
0.4000
0.5714
0.2857
0.2222
0.2000
0.1429
0.1429
8.71E‐04
8.13E‐04
6.92E‐04
5.80E‐04
4.51E‐04
4.06E‐04
2.90E‐04
2.90E‐04
0.04%
0.04%
0.03%
0.03%
0.02%
0.02%
0.01%
0.01%
D
D
D
D
D
D
D
D
80%
‐
7%
‐
80%
80%
‐
80%
109
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
GOWOTELE‐E
GOWOTBIT‐E
GTWOTOTH‐E
GOWOTFOO‐E GTWOTSHA‐E
GOWOTNOI‐E
GTWOTSCA‐E
HEN‐63
GTWOHEAT‐E
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
HEN‐63
GTWOTHAZ‐E
GTWOTFOO‐E GTWOTSYR‐E
GTWOTELE‐E
GTWOTBIT‐E
GTWOTNOI‐E
Other workforce on‐train: electric shock
Other workforce on‐train: animal/insect bite
Infrastructure worker on‐train: other
Other workforce on‐train: struck by flying object from outside train
Infrastructure worker on‐train: caught by sharp object
Other workforce on‐train: exposed to noise
Infrastructure worker on‐train: scald/burn
Infrastructure worker on‐train: fainting/distress due to train overheating (not leading to evacuation)
Infrastructure worker on‐train: exposure to hazardous substance
Infrastructure worker on‐train: struck by flying object from outside train
Infrastructure worker on‐train: caught on needle/syringe
Infrastructure worker on‐train: electric shock
Infrastructure worker on‐train: animal/insect bite
Infrastructure worker on‐train: exposed to noise
HEN‐64
HEN‐64
HEN‐64
HEN‐64
HEN‐64
HEN‐64
HEN‐64
Passenger assault
PSTPHYAS‐E
POTPHYAS‐E
PSTVERAS‐E
POTVERAS‐E
PSTTHRAS‐E
POTTHRAS‐E
Passenger assault: physical on‐station concourse or platform
Passenger assault: physical on‐train
Passenger assault: verbal on‐station concourse or platform
Passenger assault: verbal on‐train
Passenger assault: threat on‐station concourse or platform
Passenger assault: threat on‐train
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
Workforce assault
GOWSTPHY‐E
GTCOTPHY‐E
GTCSTPHY‐E
GTCOTVER‐E
GOWSTVER‐E
GTCOTTHR‐E
GOWSTTHR‐E
GTDOTPHY‐E
GTCSTVER‐E
GTDSTPHY‐E
GOWOTPHY‐E
Other workforce assault: physical on station concourse
Train crew (other) assault: physical on train
Train crew (other) assault: physical on station concourse
Train crew (other) assault: verbal on train
Other workforce assault: verbal on station concourse
Train crew (other) assault: threat on train
Other workforce assault: threat on station concourse
Train crew (driver) assault: physical on train
Train crew (other) assault: verbal on station concourse
Train crew (driver) assault: physical on station concourse
Other workforce assault: physical on train
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass jour
Pass jour
Infra worker hrs
Pass jour
Infra worker hrs
Pass jour
Infra worker hrs
1.62E‐10
1.62E‐10
2.02E‐09
8.98E‐11
2.60E‐09
1.13E‐10
2.02E‐09
0.2000
0.2000
0.1111
0.1111
0.1429
0.1392
0.1111
2.42E‐04
2.42E‐04
2.26E‐04
2.26E‐04
1.73E‐04
1.69E‐04
1.35E‐04
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
D
D
D
D
D
D
D
7%
7%
80%
7%
80%
7%
80%
Infra worker hrs
2.13E‐11
0.0012
1.03E‐04
0.00%
D
80%
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
Infra worker hrs
9.04E‐10
3.63E‐10
1.81E‐10
1.81E‐10
1.81E‐10
7.54E‐11
0.0496
0.0200
0.0099
0.0099
0.0099
0.0041
1.01E‐04
4.05E‐05
2.02E‐05
1.20E‐05
1.20E‐05
5.02E‐06
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
D
D
D
D
D
D
80%
‐
‐
80%
80%
80%
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
Pass jour
7.04E‐07
6.09E‐07
1.91E‐08
1.68E‐08
9.54E‐09
8.41E‐09
1690.6
870.8
753.2
23.59
20.80
11.79
10.40
8.109
4.316
3.733
0.0253
0.0223
0.0063
0.0056
100.00%
53.23%
46.04%
0.31%
0.27%
0.08%
0.07%
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
Pass jour
Pass trn km
Pass trn km
Pass trn km
Pass jour
Pass trn km
Pass jour
Pass trn km
Pass trn km
Pass trn km
Pass jour
3.35E‐07
5.77E‐07
1.75E‐07
3.22E‐07
8.77E‐08
1.73E‐07
4.27E‐08
4.44E‐08
3.64E‐08
1.62E‐08
5.66E‐09
1289.6
414.8
281.7
85.57
157.4
108.5
84.50
52.83
21.70
17.75
7.917
7.000
2.294
0.8994
0.6107
0.1855
0.1684
0.1161
0.0924
0.0578
0.0470
0.0190
0.0172
0.0152
100.00%
39.20%
26.62%
8.09%
7.34%
5.06%
4.03%
2.52%
2.05%
0.83%
0.75%
0.66%
D
D
D
D
D
D
D
D
D
D
D
0.4%
‐
‐
‐
‐
‐
‐
‐
1%
‐
‐
5%
110
Table B1
National frequency
Hazardous event code
Precursor code
Cause precursor description
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
HEN‐65
GTCSTTHR‐E
GOWNSPHY‐E
GTWNSPHY‐E
GTDOTVER‐E
GTDSTVER‐E
GTDOTTHR‐E
GOWOTVER‐E
GTDSTTHR‐E
GTDNSPHY‐E
GOWNSVER‐E
GOWOTTHR‐E
GTWSTPHY‐E
GTDNSVER‐E
GOWNSTHR‐E
GTWNSTHR‐E
GTCNSPHY‐E
GTDNSTHR‐E
GTWNSVER‐E
GTWSTVER‐E
GTWSTTHR‐E
GTCNSVER‐E
GTCNSTHR‐E
Train crew (other) assault: threat on station concourse
Other workforce assault: physical not at station eg signal box, trackside, etc
Infrastructure worker assault: physical not at station eg signal box, trackside, etc
Train crew (driver) assault: verbal on train
Train crew (driver) assault: verbal on station concourse
Train crew (driver) assault: threat on train
Other workforce assault: verbal on train
Train crew (driver) assault: threat on station concourse
Train crew (driver) assault: physical not at station eg signal box, trackside, etc
Other workforce assault: verbal not at station eg signal box, trackside, etc
Other workforce assault: threat on train
Infrastructure worker assault: physical on station concourse
Train crew (driver) assault: verbal not at station eg signal box, trackside, etc
Other workforce assault: threat not at station eg signal box, trackside, etc
Infrastructure worker assault: threat not at station eg signal box, trackside, etc
Train crew (other) assault: physical not at station eg signal box, trackside, etc
Train crew (driver) assault: threat not at station eg signal box, trackside, etc
Infrastructure worker assault: verbal not at station eg signal box, trackside, etc
Infrastructure worker assault: verbal on station concourse
Infrastructure worker assault: threat on station concourse
Train crew (other) assault: verbal not at station eg signal box, trackside, etc
Train crew (other) assault: threat not at station eg signal box, trackside, etc
HEN‐66
HEN‐66
HEN‐66
HEN‐66
HEN‐66
HEN‐66
HEN‐66
MOP (non‐trespasser) assault
KASSPHYS‐E
MOP (non‐trespasser) assault: physical on‐station concourse or platform
KLIPHYS‐E
MOP (non‐trespasser) assault: physical lineside
KASSVERS‐E
MOP (non‐trespasser) assault: verbal on‐station concourse or platform
KLIVERS‐E
MOP (non‐trespasser) assault: verbal lineside
KASSTHRS‐E
MOP (non‐trespasser) assault: threat on‐station concourse or platform
KLITHRS‐E
MOP (non‐trespasser) assault: threat lineside
HEN‐67
MOP (non‐trespasser) fall from platform onto track (no electric shock nor struck by train) MOP (non‐trespasser) fall from platform onto track (no electric shock nor struck by train) KPNLFALL‐H
under the influence
MOP (non‐trespasser) fall from platform onto track (no electric shock nor struck by train) ‐ KPNGFALL‐H
general causes
HEN‐67
HEN‐67
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Pass trn km
Pass jour
Infra worker hrs
Pass trn km
Pass trn km
Pass trn km
Pass jour
Pass trn km
Pass trn km
Pass jour
Pass jour
Infra worker hrs
Pass trn km
Pass jour
Infra worker hrs
Pass trn km
Pass trn km
Infra worker hrs
Infra worker hrs
Infra worker hrs
Pass trn km
Pass trn km
2.74E‐08
4.45E‐09
6.68E‐08
1.47E‐08
1.37E‐08
7.24E‐09
1.83E‐09
4.30E‐09
2.05E‐09
9.70E‐10
8.09E‐10
7.29E‐09
9.10E‐10
3.23E‐10
5.41E‐09
2.93E‐10
4.55E‐10
4.05E‐09
2.02E‐09
9.92E‐10
7.40E‐11
2.80E‐11
13.40
5.500
3.667
7.200
6.700
3.533
2.267
2.100
1.000
1.200
1.000
0.4000
0.4444
0.4000
0.2971
0.1429
0.2222
0.2222
0.1111
0.0545
0.0361
0.0137
0.0146
0.0119
0.0079
0.0077
0.0072
0.0039
0.0024
0.0023
0.0022
0.0013
0.0011
8.67E‐04
4.75E‐04
4.37E‐04
3.25E‐04
3.10E‐04
2.43E‐04
2.38E‐04
1.19E‐04
5.95E‐05
3.87E‐05
1.49E‐05
0.64%
0.52%
0.35%
0.34%
0.31%
0.17%
0.11%
0.10%
0.09%
0.06%
0.05%
0.04%
0.02%
0.02%
0.01%
0.01%
0.01%
0.01%
0.01%
0.00%
0.00%
0.00%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
‐
‐
80%
1%
‐
1%
5%
‐
‐
‐
5%
‐
‐
‐
‐
‐
‐
80%
‐
‐
‐
‐
Stations
Trk m
Stations
Trk m
Stations
Trk m
0.0314
1.05E‐06
7.67E‐04
2.65E‐08
3.84E‐04
1.33E‐08
116.1
79.48
32.52
1.942
0.8246
0.9708
0.4123
1.121
0.7442
0.3735
0.0021
8.80E‐04
5.18E‐04
2.20E‐04
100.00%
66.37%
33.31%
0.18%
0.08%
0.05%
0.02%
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
3.200
0.0471
100.00%
‐
Trk m
7.08E‐08
2.200
0.0335
71.12%
D
‐
Trk m
3.22E‐08
1.000
0.0136
28.88%
D
‐
111
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐68
HEN‐68
HEN‐68
HEN‐68
HEN‐68
HEN‐68
HEN‐68
HEN‐68
HEN‐68
HEN‐68
HEN‐68
HEN‐68
MOP (non‐trespasser) slip, trip or fall in station
KSTRSLTF‐E
MOP (non‐trespasser) slip, trip or fall (stairs)
KCONCON‐‐E
MOP (non‐trespasser) slip, trip or fall due to surface contamination on station concourse
KESCSLTF‐E
MOP (non‐trespasser) slip, trip or fall (escalator)
KCONOTHE‐E
MOP (non‐trespasser) slip, trip or fall on station concourse ‐ other
KPLTSLTF‐E
MOP (non‐trespasser) slip, trip or fall (platform)
KCONALC‐‐E
MOP (non‐trespasser) slip, trip or fall on station concourse due to being under the influence
KCONOBJ‐‐E
MOP (non‐trespasser) slip, trip or fall due to object on station concourse
KCONSURF‐E
MOP (non‐trespasser) slip, trip or fall due to uneven surface on station concourse
KCONILL‐‐E
MOP (non‐trespasser) slip, trip or fall on station concourse due to ill health
KRAMSLTF‐E
MOP (non‐trespasser) slip, trip or fall (ramps)
KCHASLTF‐E
MOP (non‐trespasser) slip, trip or fall (chair, bench, wheelchair)
HEN‐70
HEN‐70
Witnessing a traumatic event (non‐movement)
PNMSHOTRAM
Witnessing a traumatic event (non‐movement)
HEN‐71
HEN‐71A
HEN‐71A
HEN‐71B
HEN‐71B
HEN‐71C
HEN‐71C
MOP (adult trespasser) fall/jump onto railway infrastructure
MOP (adult trespasser) fall/jump onto railway infrastructure from bridge
KFALLBRG‐H
MOP (adult trespasser) fall/jump onto railway infrastructure from bridge, footbridge
MOP (adult trespasser) fall/jump onto railway infrastructure from wall, bank, roof or fence KFALLOTH‐H
MOP (adult trespasser) fall/jump onto railway infrastructure from wall, bank, roof or fence
MOP (adult trespasser) fall/jump onto railway infrastructure from other eg viaduct
KFALLOTT‐H
MOP (adult trespasser) fall/jump onto railway infrastructure from other eg viaduct
HEN‐72
HEN‐72A
HEN‐72A
HEN‐72B
HEN‐72B
HEN‐72C
HEN‐72C
MOP (child trespasser) fall/jump onto railway infrastructure
MOP (child trespasser) fall/jump onto railway infrastructure from bridge
JFALLBRG‐H
MOP (child trespasser) fall/jump onto railway infrastructure from bridge, footbridge
MOP (child trespasser) fall/jump onto railway infrastructure from wall, bank, roof or fence JFALLOTH‐H
MOP (child trespasser) fall/jump onto railway infrastructure from wall, bank, roof or fence MOP (child trespasser) fall/jump from outside onto railway infrastructure from other ‐ eg viaduct
JFALLOTT‐H
MOP (child trespasser) fall/jump onto railway infrastructure from other eg viaduct
HEN‐73
HEN‐73
Passenger manual handling
PMANHAND‐E
Passenger injury through manual handling
Cause precursor description
Version 7.1 — August 2011
Normaliser
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
Stations
Stations
Stations
Stations
Stations
Stations
Stations
Stations
Stations
Stations
Stations
0.0090
0.0063
0.0050
0.0040
0.0040
0.0024
0.0016
0.0011
7.90E‐04
5.27E‐04
5.27E‐04
88.67
22.67
16.00
12.67
10.00
10.00
6.000
4.000
2.667
2.000
1.333
1.333
0.7030
0.2113
0.1223
0.0879
0.0764
0.0764
0.0458
0.0306
0.0204
0.0153
0.0102
0.0065
100.00%
30.06%
17.39%
12.50%
10.87%
10.87%
6.52%
4.35%
2.90%
2.17%
1.45%
0.93%
D
D
D
D
D
D
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Trk m
3.60E‐07
11.20
11.20
0.0118
0.0118
100.00%
100.00%
D
‐
‐
17.33
12.33
12.33
4.200
4.200
0.8000
0.8000
3.196
2.443
2.443
0.6077
0.6077
0.1445
0.1445
100.00%
76.46%
76.46%
19.02%
19.02%
4.52%
4.52%
0.1539
0.1189
0.1189
0.0308
0.0308
0.0043
0.0043
100.00%
77.24%
77.24%
19.99%
19.99%
2.77%
2.77%
D
‐
‐
‐
‐
‐
‐
‐
0.0631
0.0631
100.00%
100.00%
D
‐
‐
Trk m
3.97E‐07
Trk m
1.35E‐07
Trk m
2.57E‐08
Trk m
1.93E‐08
Trk m
6.84E‐09
Trk m
7.60E‐10
0.8362
0.6000
0.6000
0.2126
0.2126
0.0236
0.0236
Pass jour
2.75E‐09
3.400
3.400
D
D
D
D
D
‐
‐
‐
‐
‐
‐
‐
112
Table B1
National frequency
Hazardous event code
Precursor code
HEN‐74
HEN‐74
HEN‐74
HEN‐74
HEN‐74
Workforce manual handling
GOTWKMAN‐E
Other workforce injury through manual handling
GTRWKMAN‐E
Infrastructure worker injury through manual handling
GTCOTMAN‐E
Train crew (other) injury through manual handling
GTCDRMAN‐E
Train crew (driver) injury through manual handling
HEN‐75
HEN‐75A
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident at a level crossing
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on MCB + CCTV
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVECCTV1H
LXs: MCB + CCTV
5.98E‐04
level crossing equipment on MCB + CCTV ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking 1.99E‐04
KRVECCTV2H
LXs: MCB + CCTV
level crossing equipment on MCB + CCTV ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCB + KCOLCCTV1H
LXs: MCB + CCTV
1.01E‐04
CCTV ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCB + KCOLCCTV2H
LXs: MCB + CCTV
1.01E‐04
CCTV ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCB + KCOLCCTV3H
LXs: MCB + CCTV
1.01E‐04
CCTV ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on MCB
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEMCB‐1H
LXs: MCB
7.37E‐04
level crossing equipment on MCB ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEMCB‐2H
LXs: MCB
2.46E‐04
level crossing equipment on MCB ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCB ‐ LXs: MCB
1.19E‐04
KCOLMCB‐2H
user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCB ‐ KCOLMCB‐3H
LXs: MCB
1.19E‐04
proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCB ‐ KCOLMCB‐1H
LXs: MCB
1.19E‐04
user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on MCG
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEMCG‐1H
LXs: MCG
2.28E‐04
level crossing equipment on MCG ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEMCG‐2H
LXs: MCG
7.60E‐05
level crossing equipment on MCG ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCG ‐ KCOLMCG‐1H
LXs: MCG
3.55E‐05
user error
HEN‐75A
HEN‐75A
HEN‐75A
HEN‐75A
HEN‐75A
HEN‐75B
HEN‐75B
HEN‐75B
HEN‐75B
HEN‐75B
HEN‐75B
HEN‐75C
HEN‐75C
HEN‐75C
HEN‐75C
Cause precursor description
Version 7.1 — August 2011
Normaliser
Pass jour
Infra worker hrs
Pass trn km
Tot trn km
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
1.57E‐07
2.05E‐06
1.84E‐07
5.10E‐08
424.2
193.7
112.3
89.80
28.40
0.9565
0.4256
0.2773
0.2069
0.0467
100.00%
44.50%
28.99%
21.63%
4.88%
1.199
0.4305
0.0350
0.0126
100.00%
35.98%
0.2338
0.0055
15.78%
D
‐
0.0779
0.0018
5.26%
D
‐
0.0396
0.0017
4.98%
D
‐
0.0396
0.0017
4.98%
D
‐
0.0396
0.0017
4.98%
D
‐
0.3136
0.0091
26.04%
0.1726
0.0041
11.65%
D
‐
0.0575
0.0014
3.88%
D
‐
0.0278
0.0012
3.50%
D
‐
0.0278
0.0012
3.50%
D
‐
0.0278
0.0012
3.50%
D
‐
0.0751
0.0022
6.21%
0.0417
9.87E‐04
2.82%
D
‐
0.0139
3.29E‐04
0.94%
D
‐
0.0065
2.86E‐04
0.82%
D
‐
D
D
D
D
26%
7%
80%
‐
1%
‐
‐
‐
‐
113
Table B1
National frequency
Hazardous event code
HEN‐75C
HEN‐75C
HEN‐75D
HEN‐75D
HEN‐75D
HEN‐75D
HEN‐75D
HEN‐75D
HEN‐75E
HEN‐75E
HEN‐75E
HEN‐75E
HEN‐75E
HEN‐75E
HEN‐75F
HEN‐75F
HEN‐75F
HEN‐75F
Precursor code
Cause precursor description
Normaliser
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCG ‐ LXs: MCG
user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on MCG ‐ KCOLMCG‐3H
LXs: MCG
proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on ABCL
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEABCL1H
LXs: ABCL
level crossing equipment on ABCL ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEABCL2H
LXs: ABCL
level crossing equipment on ABCL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on ABCL ‐ KCOLABCL2H
LXs: ABCL
user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on ABCL ‐ KCOLABCL1H
LXs: ABCL
user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on ABCL ‐ KCOLABCL3H
LXs: ABCL
proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on AHB
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEAHB‐1H
LXs: AHB
level crossing equipment on AHB ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEAHB‐2H
LXs: AHB
level crossing equipment on AHB ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on AHB ‐ LXs: AHB
KCOLAHB‐1H
user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on AHB ‐ KCOLAHB‐2H
LXs: AHB
user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on AHB ‐ LXs: AHB
KCOLAHB‐3H
proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on AOCL
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on AOCL ‐ KCOLAOCL3H
LXs: AOCL
proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on AOCL ‐ KCOLAOCL2H
LXs: AOCL
user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on AOCL ‐ KCOLAOCL1H
LXs: AOCL
user error
KCOLMCG‐2H
Version 7.1 — August 2011
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/ normaliser)
(events/
year)
(FWI/
year)
3.55E‐05
0.0065
2.86E‐04
0.82%
D
‐
3.55E‐05
0.0065
2.86E‐04
0.82%
D
‐
0.0521
0.0015
4.27%
5.65E‐04
0.0294
6.95E‐04
1.98%
D
‐
1.88E‐04
0.0098
2.32E‐04
0.66%
D
‐
8.29E‐05
0.0043
1.90E‐04
0.54%
D
‐
8.29E‐05
0.0043
1.90E‐04
0.54%
D
‐
8.29E‐05
0.0043
1.90E‐04
0.54%
D
‐
0.2425
0.0069
19.79%
3.05E‐04
0.1379
0.0033
9.31%
D
‐
1.02E‐04
0.0460
0.0011
3.10%
D
‐
4.33E‐05
0.0196
8.62E‐04
2.46%
D
‐
4.33E‐05
0.0196
8.62E‐04
2.46%
D
‐
4.33E‐05
0.0196
8.62E‐04
2.46%
D
‐
0.0136
5.99E‐04
1.71%
3.87E‐05
0.0045
2.00E‐04
0.57%
D
‐
3.87E‐05
0.0045
2.00E‐04
0.57%
D
‐
3.87E‐05
0.0045
2.00E‐04
0.57%
D
‐
‐
‐
‐
114
Table B1
National frequency
Hazardous event code
HEN‐75G
HEN‐75G
HEN‐75G
HEN‐75G
HEN‐75G
HEN‐75G
HEN‐75H
HEN‐75H
HEN‐75H
HEN‐75H
HEN‐75H
HEN‐75H
HEN‐75I
HEN‐75I
HEN‐75I
HEN‐75I
HEN‐75I
HEN‐75I
Precursor code
Cause precursor description
Normaliser
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on UWC + MWL
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEUWCM1H
LXs: UWC + MWL
level crossing equipment on UWC + MWL ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC + KCOLUWCM1H
LXs: UWC + MWL
MWL ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC + KCOLUWCM2H
LXs: UWC + MWL
MWL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC + KCOLUWCM3H
LXs: UWC + MWL
MWL ‐ proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEUWCM2H
LXs: UWC + MWL
level crossing equipment on UWC + MWL ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on UWC + T
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEUWCT1H
LXs: UWC + T
level crossing equipment on UWC + T ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC + T ‐ KCOLUWCT3H
LXs: UWC + T
proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC + T ‐ KCOLUWCT1H
LXs: UWC + T
user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC + T ‐ KCOLUWCT2H
LXs: UWC + T
user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEUWCT2H
LXs: UWC + T
level crossing equipment on UWC + T ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on UWC
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEUWC‐1H
LXs: UWC
level crossing equipment on UWC ‐ user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist injury due to road vehicle striking KRVEUWC‐2H
LXs: UWC
level crossing equipment on UWC ‐ user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC ‐ KCOLUWC‐1H
LXs: UWC
user error
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC ‐ LXs: UWC
KCOLUWC‐2H
user violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on UWC ‐ KCOLUWC‐3H
LXs: UWC
proper use
Version 7.1 — August 2011
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
0.0098
2.90E‐04
0.83%
5.42E‐05
0.0052
1.23E‐04
0.35%
D
‐
9.94E‐06
9.55E‐04
4.21E‐05
0.12%
D
‐
9.94E‐06
9.55E‐04
4.21E‐05
0.12%
D
‐
9.94E‐06
9.55E‐04
4.21E‐05
0.12%
D
‐
1.81E‐05
0.0017
4.10E‐05
0.12%
D
‐
0.0216
6.48E‐04
1.85%
6.67E‐06
0.0111
2.63E‐04
0.75%
D
‐
1.35E‐06
0.0023
9.92E‐05
0.28%
D
‐
1.35E‐06
0.0023
9.92E‐05
0.28%
D
‐
1.35E‐06
0.0023
9.92E‐05
0.28%
D
‐
2.22E‐06
0.0037
8.76E‐05
0.25%
D
‐
0.0394
0.0011
3.22%
2.52E‐05
0.0223
5.27E‐04
1.50%
D
‐
8.41E‐06
0.0074
1.76E‐04
0.50%
D
‐
3.66E‐06
0.0032
1.42E‐04
0.41%
D
‐
3.66E‐06
0.0032
1.42E‐04
0.41%
D
‐
3.66E‐06
0.0032
1.42E‐04
0.41%
D
‐
‐
‐
‐
115
Table B1
National frequency
Hazardous event code
HEN‐75J
HEN‐75J
HEN‐75J
HEN‐75J
HEN‐76
HEN‐76
HEN‐77
HEN‐77A
Precursor code
Cause precursor description
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by a road vehicle or involved in a road traffic accident on OC
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on OC ‐ user KCOLOC‐‐2H
LXs: OC
violation
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on OC ‐ KCOLOC‐‐3H
LXs: OC
proper use
MOP (non‐trespasser) pedestrian or cyclist/motorcyclist struck by road vehicle on OC ‐ user LXs: OC
KCOLOC‐‐1H
error
MOP (non‐trespasser) struck/crushed by structural collapse or large object as a result of operations on railway infrastructure
MOP (non‐trespasser) struck/crushed by structural collapse or large object as a result of KRCIOPS‐‐E
Trk m
operations on railway infrastructure
HEN‐77B
HEN‐77B
Suicide (or attempted suicide) not involving rolling stock in motion
Attempted suicide not involving rolling stock in motion
Attempted suicide or suspected suicide (not resulting in fatality) not involving rolling stock KSUIATNRSH
in motion
Suicide not involving rolling stock in motion
KSUICDNRSH
Suicide or suspected suicide (resulting in fatality) not involving rolling stock in motion
HEN‐82
HEN‐82
HEN‐82
HEN‐82
HEN‐82
Workforce awkward movement injury GTCAWKMVIN
Train crew (other) awkward movement injury
GOWAWKMVIN Other workforce awkward movement injury
GTWAWKMVIN
Infrastructure worker awkward movement injury
GTDAWKMVIN
Train crew (driver) awkward movement injury
HEN‐83
HEN‐83
Passenger awkward movement injury
PSGAWKMVIN
Passenger awkward movement injury
HEN‐77A
Normaliser
Version 7.1 — August 2011
(events/ normaliser)
Deriv. HEN of POS (% of total prec. split
(%)
HE risk) (D, E)
Risk contribution
(events/
year)
(FWI/
year)
7.30E‐04
3.22E‐05
0.09%
4.42E‐06
2.43E‐04
1.07E‐05
0.03%
D
‐
4.42E‐06
2.43E‐04
1.07E‐05
0.03%
D
‐
4.42E‐06
2.43E‐04
1.07E‐05
0.03%
D
‐
0.4000
0.0102
100.00%
0.4000
0.0102
100.00%
20.60
11.00
10.41
0.8002
100.00%
7.69%
1.29E‐08
‐
‐
D
‐
‐
‐
Trk m
3.54E‐07
11.00
0.8002
7.69%
D
‐
Trk m
3.09E‐07
9.600
9.600
9.605
9.605
92.31%
92.31%
D
‐
‐
Tot trn km
Pass jour
Infra worker hrs
Tot trn km
6.22E‐08
2.67E‐08
4.10E‐07
3.95E‐08
112.2
34.67
33.00
22.50
22.00
0.3688
0.1140
0.1085
0.0740
0.0723
100.00%
30.91%
29.42%
20.06%
19.61%
D
D
D
D
18%
‐
7%
80%
1%
Pass jour
3.77E‐09
4.667
4.667
0.0702
0.0702
100.00%
100.00%
D
‐
‐
116