Appendix B
Appendix B
B.1
Cause precursor risk contributions (Table B)
Introduction
The risk contribution of each cause precursor to its associated hazardous event is presented
in Table B. Table B below, provides the risk contribution for precursors in FWI per year. The
Excel version of Table B (available on the CD-ROM and downloadable from the Extranet)
has been extended and contains the risk contribution for precursors in FWI per year, fatalities
per year, major injures per year and minor injuries per year. The risk contributions in Table B
represent how much the total risk for the hazardous event would reduce by if the failure
frequency or probability for the precursor were reduced to zero, as well as the precursor
percentage risk contribution.
For cause precursors where no data is available, where possible the following techniques
have been used to assign frequencies or probabilities:
a)
b)
Empirical Bayes Estimates1
Expert judgement from technical specialists within RSSB
c)
A statistical method using the χ2 (chi) distribution for zero failures2
Where it has not been possible to carry out the above, a value of zero has been assigned. In
such cases, the actual data gives a reasonable estimate of the hazardous event frequency,
such that the above assumption is unlikely to produce significant errors in the frequency
estimates. A research project has been commenced to examine the methodologies available
for use where little or no data exists as part of the RSSB research and development
programme.
Some of the hazardous events have been broken down into sub-hazardous event categories,
eg HEM-10 is split into HEM-10A, HEM-10B and HEM-10 OTP. In the main, this is because
the consequences per event for the sub–hazardous events 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 5.5/May 2008
1
Appendix B
The following abbreviations have been used in the Appendix B precursor descriptions:
Abbreviation
Meaning
ABCL
Automatic barrier crossing (locally monitored by train crew)
AOCL
Automatic open level crossing (locally monitored by train crew)
AHB
Automatic half barrier
Comm
Communication
CP
Conflict point
DMU
Diesel multiple unit
EMU
Electric multiple unit
FT
Freight, ECS and parcels train
HE
Hazardous event
HEM
Movement accident
HEN
Non-movement accident
HET
Train accident
HST
High speed train
LC
Level crossing
MG/B
Manual gate barrier
MOPs
Members of the public
Miscomm
Miscommunication
NPT
Non-passenger train
OHLE
Overhead line equipment
OL
Overlap
OTM
On-track machine
PT
Passenger train
NRMI
Network Rail managed infrastructure
Resp
Responsibility
RV
Road vehicle
S&C
Switches and crossings
SAS
Start against signal
SAS O
Start against running line signal
SAS P
Start against platform starter signal
Sig
Signal
SPADs
Signals passed at danger
UWC
User worked crossing
Version 5.5/May 2008
2
Appendix B
The ‘Groups’ in Table B1 refer to SPAD error groupings determined as a result of Lord
Cullen’s recommendations3.
Current error category
SPAD sub-category
Group 1
Ambiguous/incomplete information given
Correct information given but misunderstood
Information not given
Wrong information given
Group 2
Anticipation of signal clearance
Failing to check signal aspect
Failing to locate signal aspect
Failing to react to caution aspect
Ignorance of rules/instructions
Violation of rules/instructions
Group 3
Misread previous signal
Viewed correct signal misread aspect
Viewed wrong signal
Group 4
Misjudges environmental conditions
Misjudges train behaviour
Type unknown
Group 5
3
None of the above
p.231, Part 1 Report, The Ladbroke Grove Rail Inquiry, the Rt. Hon Lord Cullen PC
Version 5.5/May 2008
3
Appendix B
For version 5.5 of the SRM, Table B explicitly describes the normaliser used to calculate the
normalised frequency for each hazardous event precursor, e.g. broken rail per passenger
train mile. The following table shows the normaliser
Normaliser
Abbreviation
Pass. trn mls
Description
Number of passenger train miles per year
Non pass. trn mls
Number of non-passenger train miles per year
Tot. trn mls
Total number of train miles per year
OTP hrs
Number of hours per year of on-track plant operation
Station
Total number of NRMI stations
Frt. tr. mi. on ps. lines
Number of freight train miles on passenger lines per year
34,536,107
Frt. tr. mi. on frt. lines
Number of freight train miles on freight only lines per year
2,391,805
ECS & parcels trn
mls
Number of empty coaching stock and parcels train miles
per year
15,382,047
Pass. dsl. loco. trn
mls
Pass. DMU trn mls
Number of DLOCO passenger stock miles per year
Pass. el. loco. trn mls
Number of ELOCO passenger stock miles per year
Pass. EMU trn mls
Number of EMU passenger stock miles per year
127,611,604
Pass. HST trn mls
Number of HST passenger stock miles per year
15,542,738
ECS trn mls
Number of ECS stock miles per year
15,180,547
Frt & parcels trn mls
Number of freight and parcel train miles per year
37,129,412
Trk wrkr hrs
Number of full time equivalent track worker hours per year
54,900,000
Pass. jour
Number of passenger journeys per year
LXs: MG, MCB +
CCTV
Number of manual gates, manually controlled barriers and
closed circuit television level crossings
828
LXs: AHB
Number of automatic half barrier level crossings
451
LXs: ABCL
Number of automatic barrier crossings locally monitored
LXs: AOCL
Number of automatic open crossings locally monitored
LXs: FP
Number of footpath crossings
LXs: OC
Number of open crossings
LXs: UWC + T
Number of user-worked crossings with telephone
1,661
LXs: UWC
Number of user-worked crossings
1,060
LXs: UWC + MWL
Number of user-worked crossings with miniature warning
lights
Trk mts
Number of track metres on NRMI
Number of DMU passenger stock miles per year
Value
281,079,774
52,309,960
333,389,734
2,017,080
2,518
653,230
126,172,964
11,099,239
1,125,000,000
50
128
2,586
63
93
31,049,202
The final column of the table indicates how the precursor was derived, and takes one of the
following three values:
D Predominately based on data (may include some minor expert judgement element)
E Entirely estimated frequency/probability used
N No data available
Version 5.5/May 2008
4
Appendix B
B.2
Table B in Excel
The Excel version of Table B 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
Column totals:
-
Summing only the unhidden rows (eg. when filtered) and not
including subtotals in the rows below
-
National frequency of SPADs (events / normaliser)
(HET-01, HET-02 and HET-03) -
National frequency of SPADs (events / year)
Passenger,
Breakdown of risk shown in terms of:
Workforce,
-
Fatalities / year
Member of Public
-
Major injuries / year
risk breakdown
-
Rep. minor injuries / year
-
Non-rep. minor injuries / year
-
Shock / trauma injuries / year
Further expansion to show:
Customised grouping of risk
-
Fatalities / event
-
Major injuries / event
-
Rep. minor injuries / event
-
Non-rep. minor injuries / event
-
Shock / trauma injuries / event
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. relating to miscommunication, open level crossings, or
bridges, etc. Once filtered the summary row will sum only the
precursors that are visible.
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.
Version 5.5/May 2008
5
Appendix B
Chart 1.
Table B in Excel – extra data
Click here to expand row to
reveal the summary row
Click here to expand columns
to Passenger, Workforce,
Member of Public breakdown
Click here to expand columns to
reveal the HET- 1, 2, & 3 SPAD data
Chart 2.
Table B in Excel – expanded view
Expanded to reveal
summary row
Expanded to reveal consequences
per event as well as per year
Expanded to reveal Passenger,
Workforce, Member of Public breakdown
Version 5.5/May 2008
6
Appendix B
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 have been identified using the filter buttons.
Chart 3.
Table B in Excel – Filtering
Click on the filter button to open
dialogue box and select custom
In this example only the precursors that
“contain” the word “coupling” have been
selected using the dialogue box
The summary row only sums the visible
rows (i.e. those with “coupling” in the
description)
Version 5.5/May 2008
7
Appendix B
Page left blank intentionally
Version 5.5/May 2008
8
Table B
Normaliser
National
frequency
(events/
normaliser)
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
9.63E-12
8.24E-12
4.71E-12
1.48E-12
2.44E-13
3.85E-14
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.39E-11
2.17E-11
1.27E-11
4.79E-13
National
frequency
(events/ year)
0.3954
0.0068
0.0027
0.0023
0.0013
4.17E-04
6.86E-05
1.08E-05
0.0167
0.0067
0.0061
0.0036
1.35E-04
Pass. trn mls
4.79E-13
1.35E-04
2.05E-04
0.04%
D
HET-01 & 02P
PFC1--P
PT SPAD due to miscomm of ambiguous/incomplete info on pln line
Correct information given but misunderstood by driver/signaller (Group 1):
HET-01 & 02P
PFC2--JO
PT SPAD due to miscomm of correct info given but misunderstood at junc
SAS O
HET-01 & 02P
PFC2--JP
PT SPAD due to miscomm of correct info given but misunderstood at junc
SAS P
HET-01 & 02P
PFC2--J
PT SPAD due to miscomm of correct info given but misunderstood at junc
Pass. trn mls
2.27E-13
3.97E-11
9.72E-05
0.0560
0.0209
0.02%
9.61%
3.59%
D
Pass. trn mls
6.37E-05
0.0300
0.0112
Pass. trn mls
3.94E-11
0.0111
0.0207
3.56%
D
Pass. trn mls
2.54E-11
0.0071
0.0134
2.30%
D
HET-01 & 02P
PFC2--PO
Pass. trn mls
1.59E-12
4.47E-04
6.82E-04
0.12%
D
HET-01 & 02P
PFC2--PP
Pass. trn mls
5.49E-13
1.54E-04
2.35E-04
0.04%
E
HET-01 & 02P
PFC2--P
Pass. trn mls
1.51E-13
4.24E-05
6.46E-05
0.01%
D
Hazardous Event
Number
Precursor code Cause precursor description
HET-01 & 02P - Passenger train SPAD resulting in train collision (other than in station):
Wrong information given by driver/signaller (Group 1):
HET-01 & 02P
PFC3--JP
PT SPAD due to miscomm of wrong info given at junc SAS P
HET-01 & 02P
PFC3--JO
PT SPAD due to miscomm of wrong info given at junc SAS O
HET-01 & 02P
PFC3--J
PT SPAD due to miscomm of wrong info given at junc
HET-01 & 02P
PFC3--PO
PT SPAD due to miscomm of wrong info given on pln line SAS O
HET-01 & 02P
PFC3--PP
PT SPAD due to miscomm of wrong info given on pln line SAS P
HET-01 & 02P
PFC3--P
PT SPAD due to miscomm of wrong info given on pln line
Ambiguous or incomplete information given by driver/signaller (Group 1):
HET-01 & 02P
PFC1--JO
PT SPAD due to miscomm of ambiguous/incomplete info at junc SAS O
HET-01 & 02P
PFC1--JP
PT SPAD due to miscomm of ambiguous/incomplete info at junc SAS P
HET-01 & 02P
PFC1--J
PT SPAD due to miscomm of ambiguous/incomplete info at junc
HET-01 & 02P
PFC1--PP
PT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS P
HET-01 & 02P
PFC1--PO
Version 5.5/May 2008
PT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS O
PT SPAD due to miscomm of correct info given but misunderstood on pln line
SAS O
PT SPAD due to miscomm of correct info given but misunderstood on pln line
SAS P
PT SPAD due to miscomm of correct info given but misunderstood on pln line
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.5821
0.0126
0.0051
0.0043
0.0025
6.36E-04
1.05E-04
1.65E-05
0.0312
0.0126
0.0114
0.0067
2.05E-04
Risk cont.
% of total
HE risk
100.00%
2.17%
0.87%
0.74%
0.43%
0.11%
0.02%
0.00%
5.36%
2.16%
1.96%
1.15%
0.04%
Deriv. of
prec. (D,
E, N)
D
D
D
D
E
E
D
D
D
D
D
9
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Information not given by driver/signaller (Group 1):
HET-01 & 02P
PFC4--JP
PT SPAD due to miscomm of info not given at junc SAS P
HET-01 & 02P
PFC4--JO
PT SPAD due to miscomm of info not given at junc SAS O
HET-01 & 02P
PFC4--J
PT SPAD due to miscomm of info not given at junc
HET-01 & 02P
PFC4--PO
PT SPAD due to miscomm of info not given on pln line SAS O
HET-01 & 02P
PFC4--PP
PT SPAD due to miscomm of info not given on pln line SAS P
HET-01 & 02P
PFC4--P
PT SPAD due to miscomm of info not given on pln line
Driver fails to check signal aspect (Group 2):
HET-01 & 02P
PFD2--JP
PT SPAD due to driver failure to check signal aspect at junc SAS P
HET-01 & 02P
PFD2--J
PT SPAD due to driver failure to check signal aspect at junc
HET-01 & 02P
PFD2--JO
PT SPAD due to driver failure to check signal aspect at junc SAS O
HET-01 & 02P
PFD2--P
PT SPAD due to driver failure to check signal aspect on pln line
HET-01 & 02P
PFD2--PP
PT SPAD due to driver failure to check signal aspect on pln line SAS P
HET-01 & 02P
PFD2--PO
PT SPAD due to driver failure to check signal aspect on pln line SAS O
Driver fails to react to cautionary aspect (Group 2):
HET-01 & 02P
PFD4--J
PT SPAD due to driver failure to react to caution aspect at junc
HET-01 & 02P
PFD4--P
PT SPAD due to driver failure to react to caution aspect on pln line
Driver violation of rules/instructions (Group 2):
HET-01 & 02P
PFD6--JO
PT SPAD due to driver violation of rules/instructions at junc SAS O
HET-01 & 02P
PFD6--JP
PT SPAD due to driver violation of rules/instructions at junc SAS P
HET-01 & 02P
PFD6--P
PT SPAD due to driver violation of rules/instructions on pln line
HET-01 & 02P
PFD6--J
PT SPAD due to driver violation of rules/instructions at junc
HET-01 & 02P
PFD6--PO
PT SPAD due to driver violation of rules/instructions on pln line SAS O
HET-01 & 02P
PFD6--PP
PT SPAD due to driver violation of rules/instructions on pln line SAS P
Driver fails to locate signal (Group 2):
HET-01 & 02P
PFD3--J
PT SPAD due to driver failure to locate signal aspect at junc
HET-01 & 02P
PFD3--P
PT SPAD due to driver failure to locate signal aspect on pln line
HET-01 & 02P
PFD3--JO
PT SPAD due to driver failure to locate signal aspect at junc SAS O
HET-01 & 02P
PFD3--JP
PT SPAD due to driver failure to locate signal aspect at junc SAS P
HET-01 & 02P
PFD3--PO
PT SPAD due to driver failure to locate signal aspect on pln line SAS O
HET-01 & 02P
PFD3--PP
PT SPAD due to driver failure to locate signal aspect on pln line SAS P
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
7.22E-12
4.57E-12
3.65E-12
7.95E-13
5.49E-13
8.67E-14
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
6.02E-11
4.84E-11
2.16E-11
1.59E-11
8.06E-12
2.31E-12
Pass. trn mls
Pass. trn mls
9.25E-11
3.40E-11
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
3.25E-11
9.11E-12
5.96E-12
3.68E-12
2.60E-12
4.22E-13
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.89E-11
6.51E-12
6.82E-12
4.49E-12
1.46E-12
2.87E-13
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0047
0.0020
0.0013
0.0010
2.24E-04
1.54E-04
2.44E-05
0.0440
0.0169
0.0136
0.0061
0.0045
0.0023
6.49E-04
0.0356
0.0260
0.0096
0.0152
0.0091
0.0026
0.0017
0.0010
7.32E-04
1.19E-04
0.0136
0.0081
0.0018
0.0019
0.0013
4.10E-04
8.08E-05
Risk cont.
(FWI / year)
0.0087
0.0038
0.0024
0.0019
3.41E-04
2.35E-04
3.71E-05
0.0595
0.0220
0.0186
0.0077
0.0068
0.0035
9.89E-04
0.0476
0.0330
0.0146
0.0200
0.0115
0.0033
0.0026
0.0013
0.0011
1.81E-04
0.0179
0.0103
0.0028
0.0024
0.0016
6.25E-04
1.23E-04
Risk cont.
% of total
HE risk
1.50%
0.65%
0.41%
0.33%
0.06%
0.04%
0.01%
10.22%
3.78%
3.19%
1.31%
1.17%
0.59%
0.17%
8.17%
5.67%
2.51%
3.43%
1.98%
0.56%
0.44%
0.23%
0.19%
0.03%
3.07%
1.77%
0.48%
0.42%
0.28%
0.11%
0.02%
Deriv. of
prec. (D,
E, N)
D
E
E
D
E
E
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
10
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Driver anticipates signal clearance (Group 2):
HET-01 & 02P
PFD1--J
PT SPAD due to driver anticipation of signal clearance at junc
HET-01 & 02P
PFD1--P
PT SPAD due to driver anticipation of signal clearance on pln line
HET-01 & 02P
PFD1--JO
PT SPAD due to driver anticipation of signal clearance at junc SAS O
HET-01 & 02P
PFD1--PP
PT SPAD due to driver anticipation of signal clearance on pln line SAS P
Normaliser
National
frequency
(events/
normaliser)
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
HET-01 & 02P
HET-01 & 02P
Risk cont.
(FWI / year)
0.0135
0.0093
0.0023
0.0012
3.68E-04
Risk cont.
% of total
HE risk
2.31%
1.59%
0.39%
0.21%
0.06%
Deriv. of
prec. (D,
E, N)
2.59E-11
5.29E-12
3.47E-12
8.59E-13
National
frequency
(events/ year)
0.0102
0.0073
0.0015
9.76E-04
2.42E-04
Pass. trn mls
Pass. trn mls
5.33E-13
2.96E-13
1.50E-04
8.33E-05
1.91E-04
1.27E-04
0.03%
0.02%
E
E
Driver ignorance of rules/instructions (Group 2):
HET-01 & 02P
PFD5--J
PT SPAD due to driver ignorance of rules/instructions at junc
HET-01 & 02P
PFD5--JO
PT SPAD due to driver ignorance of rules/instructions at junc SAS O
HET-01 & 02P
PFD5--JP
PT SPAD due to driver ignorance of rules/instructions at junc SAS P
HET-01 & 02P
PFD5--P
PT SPAD due to driver ignorance of rules/instructions on pln line
HET-01 & 02P
PFD5--PP
PT SPAD due to driver ignorance of rules/instructions on pln line SAS P
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
8.43E-12
3.37E-12
1.73E-12
7.13E-13
4.80E-13
0.0042
0.0024
9.46E-04
4.85E-04
2.00E-04
1.35E-04
0.0054
0.0030
0.0012
6.18E-04
3.06E-04
2.06E-04
0.94%
0.51%
0.21%
0.11%
0.05%
0.04%
D
D
D
D
D
HET-01 & 02P
Pass. trn mls
3.60E-13
1.01E-04
1.54E-04
0.03%
D
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.75E-11
1.21E-11
7.44E-12
1.48E-12
7.95E-13
5.49E-13
Pass. trn mls
Pass. trn mls
2.77E-11
6.50E-12
0.0140
0.0077
0.0034
0.0021
4.17E-04
2.24E-04
1.54E-04
0.0118
0.0078
0.0018
0.0191
0.0109
0.0043
0.0026
6.36E-04
3.41E-04
2.35E-04
0.0151
0.0099
0.0023
3.28%
1.88%
0.74%
0.45%
0.11%
0.06%
0.04%
2.59%
1.70%
0.40%
PFD1--JP
PFD1--PO
PFD5--PO
PT SPAD due to driver anticipation of signal clearance at junc SAS P
PT SPAD due to driver anticipation of signal clearance on pln line SAS O
PT SPAD due to driver ignorance of rules/instructions on pln line SAS O
Driver misreads by viewing wrong signal (Group 3):
HET-01 & 02P
PFR3--J
PT SPAD due to driver viewing the wrong signal at junc
HET-01 & 02P
PFR3--JP
PT SPAD due to driver viewing the wrong signal at junc SAS P
HET-01 & 02P
PFR3--JO
PT SPAD due to driver viewing the wrong signal at junc SAS O
HET-01 & 02P
PFR3--P
PT SPAD due to driver viewing the wrong signal on pln line
HET-01 & 02P
PFR3--PO
PT SPAD due to driver viewing the wrong signal on pln line SAS O
HET-01 & 02P
PFR3--PP
PT SPAD due to driver viewing the wrong signal on pln line SAS P
Driver views correct signal but misreads aspect (Group 3):
HET-01 & 02P
PFR2--J
PT SPAD due to driver misreading aspect on correct signal at junc
HET-01 & 02P
PFR2--JP
PT SPAD due to driver misreading aspect on correct signal at junc SAS P
D
D
D
D
D
D
D
D
D
E
D
D
HET-01 & 02P
PFR2--JO
PT SPAD due to driver misreading aspect on correct signal at junc SAS O
Pass. trn mls
5.90E-12
0.0017
0.0021
0.36%
D
HET-01 & 02P
HET-01 & 02P
PFR2--P
PFR2--PO
PT SPAD due to driver misreading aspect on correct signal on pln line
PT SPAD due to driver misreading aspect on correct signal on pln line SAS O
Pass. trn mls
Pass. trn mls
9.54E-13
4.35E-13
2.68E-04
1.22E-04
4.09E-04
1.87E-04
0.07%
0.03%
D
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
11
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-01 & 02P
PFR2--PP
PT SPAD due to driver misreading aspect on correct signal on pln line SAS P
Normaliser
Pass. trn mls
National
frequency
(events/
normaliser)
4.35E-13
Driver misreads previous signal (Group 3):
HET-01 & 02P
PFR1--J
PT SPAD due to driver misreading the previous signal aspect at junc
HET-01 & 02P
PFR1--JO
PT SPAD due to driver misreading the previous signal aspect at junc SAS O
Pass. trn mls
Pass. trn mls
2.90E-12
4.11E-13
0.0011
8.15E-04
1.15E-04
0.0014
0.0010
1.46E-04
0.23%
0.18%
0.03%
D
E
HET-01 & 02P
PFR1--JP
PT SPAD due to driver misreading the previous signal aspect at junc SAS P
Pass. trn mls
2.29E-13
6.43E-05
8.19E-05
0.01%
D
HET-01 & 02P
PFR1--PP
Pass. trn mls
8.78E-14
2.47E-05
3.76E-05
0.01%
E
HET-01 & 02P
PFR1--PO
Pass. trn mls
8.78E-14
2.47E-05
3.76E-05
0.01%
E
HET-01 & 02P
PFR1--P
PT SPAD due to driver misreading the previous signal aspect on pln line SAS
P
PT SPAD due to driver misreading the previous signal aspect on pln line SAS
O
PT SPAD due to driver misreading the previous signal aspect on pln line
Pass. trn mls
6.03E-14
1.69E-05
2.58E-05
0.00%
D
Pass. trn mls
Pass. trn mls
2.28E-12
5.59E-13
Pass. trn mls
Pass. trn mls
1.39E-11
2.28E-12
Pass. trn mls
Pass. trn mls
2.03E-13
8.67E-14
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
3.08E-11
2.23E-11
1.42E-11
3.17E-12
1.59E-12
8.75E-13
7.99E-04
6.42E-04
1.57E-04
0.0045
0.0039
6.42E-04
8.14E-05
5.71E-05
2.44E-05
0.0205
0.0087
0.0063
0.0040
8.92E-04
4.47E-04
2.46E-04
0.0014
0.0012
2.40E-04
0.0083
0.0073
9.79E-04
1.44E-04
1.07E-04
3.71E-05
0.0266
0.0112
0.0079
0.0051
0.0014
6.82E-04
3.75E-04
0.25%
0.21%
0.04%
1.42%
1.25%
0.17%
0.02%
0.02%
0.01%
4.56%
1.92%
1.36%
0.87%
0.23%
0.12%
0.06%
Driver misjudges environmental conditions (Group 4):
HET-01 & 02P
PFJ1--J
PT SPAD due to driver misjudge of environmental conditions at junc
HET-01 & 02P
PFJ1--P
PT SPAD due to driver misjudge of environmental conditions on pln line
Driver misjudges train behaviour (Group 4):
HET-01 & 02P
PFJ2--J
PT SPAD due to driver misjudge of train behaviour at junc
HET-01 & 02P
PFJ2--P
PT SPAD due to driver misjudge of train behaviour on pln line
Unknown driver misjudgement (Group 4):
HET-01 & 02P
PFJ3--J
PT SPAD due to unknown driver misjudge at junc
HET-01 & 02P
PFJ3--P
PT SPAD due to unknown driver misjudge on pln line
Uncategorised driver error (Group 5):
HET-01 & 02P
PFUC1--J
PT SPAD due to uncategorised driver error at junc
HET-01 & 02P
PFUC1--JO
PT SPAD due to uncategorised driver error at junc SAS O
HET-01 & 02P
PFUC1--JP
PT SPAD due to uncategorised driver error at junc SAS P
HET-01 & 02P
PFUC1--P
PT SPAD due to uncategorised driver error on pln line
HET-01 & 02P
PFUC1--PO
PT SPAD due to uncategorised driver error on pln line SAS O
HET-01 & 02P
PFUC1--PP
PT SPAD due to uncategorised driver error on pln line SAS P
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
1.22E-04
Risk cont.
(FWI / year)
1.87E-04
Risk cont.
% of total
HE risk
0.03%
Deriv. of
prec. (D,
E, N)
E
D
D
D
D
E
E
D
D
D
D
D
D
12
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Signaller communication errors (Group 5):
HET-01 & 02P
PFOHE3--JP
PT SPAD due to handsignaller communication HE at junc SAS P
HET-01 & 02P
PFOHE3--JO
PT SPAD due to handsignaller communication HE at junc SAS O
HET-01 & 02P
PFOHE3--J
PT SPAD due to handsignaller communication HE at junc
HET-01 & 02P
PFOHE1--JO
PT SPAD due to signaller communication HE at junc SAS O
HET-01 & 02P
PFOHE4--JO
PT SPAD due to other staff communication HE at junc SAS O
HET-01 & 02P
PFOHE1--JP
PT SPAD due to signaller communication HE at junc SAS P
HET-01 & 02P
PFOHE4--JP
PT SPAD due to other staff communication HE at junc SAS P
HET-01 & 02P
PFOHE1--PP
PT SPAD due to signaller communication HE on pln line SAS P
HET-01 & 02P
PFOHE1--PO
PT SPAD due to signaller communication HE on pln line SAS O
HET-01 & 02P
PFOHE4--PO
PT SPAD due to other staff communication HE on pln line SAS O
HET-01 & 02P
PFOHE3--PP
PT SPAD due to handsignaller communication HE on pln line SAS P
HET-01 & 02P
PFOHE3--PO
PT SPAD due to handsignaller communication HE on pln line SAS O
HET-01 & 02P
PFOHE4--PP
PT SPAD due to other staff communication HE on pln line SAS P
HET-01 & 02P
PFOHE1--J
PT SPAD due to signaller communication HE at junc
HET-01 & 02P
PFOHE4--J
PT SPAD due to other staff communication HE at junc
HET-01 & 02P
PFOHE1--P
PT SPAD due to signaller communication HE on pln line
HET-01 & 02P
PFOHE4--P
PT SPAD due to other staff communication HE on pln line
HET-01 & 02P
PFOHE3--P
PT SPAD due to handsignaller communication HE on pln line
Signaller operating errors (Group 5):
HET-01 & 02P
PFOHE2--JO
PT SPAD due to signal equipment operating error at junc SAS O
HET-01 & 02P
PFOHE2--JP
PT SPAD due to signal equipment operating error at junc SAS P
HET-01 & 02P
PFOHE2--PP
PT SPAD due to signal equipment operating error on pln line SAS P
HET-01 & 02P
PFOHE2--PO
PT SPAD due to signal equipment operating error on pln line SAS O
HET-01 & 02P
PFOHE2--J
PT SPAD due to signal equipment operating error at junc
HET-01 & 02P
PFOHE2--P
PT SPAD due to signal equipment operating error on pln line
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
4.98E-12
4.57E-12
3.65E-12
2.57E-12
2.57E-12
9.87E-13
9.87E-13
5.49E-13
5.49E-13
5.49E-13
5.49E-13
5.49E-13
5.49E-13
5.09E-13
5.09E-13
8.67E-14
8.67E-14
8.67E-14
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.57E-12
9.87E-13
5.49E-13
5.49E-13
5.09E-13
8.67E-14
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0070
0.0014
0.0013
0.0010
7.22E-04
7.22E-04
2.77E-04
2.77E-04
1.54E-04
1.54E-04
1.54E-04
1.54E-04
1.54E-04
1.54E-04
1.43E-04
1.43E-04
2.44E-05
2.44E-05
2.44E-05
0.0015
7.22E-04
2.77E-04
1.54E-04
1.54E-04
1.43E-04
2.44E-05
Risk cont.
(FWI / year)
0.0114
0.0026
0.0024
0.0019
9.10E-04
9.10E-04
3.53E-04
3.53E-04
2.35E-04
2.35E-04
2.35E-04
2.35E-04
2.35E-04
2.35E-04
1.84E-04
1.84E-04
3.71E-05
3.71E-05
3.71E-05
0.0020
9.10E-04
3.53E-04
2.35E-04
2.35E-04
1.84E-04
3.71E-05
Risk cont.
% of total
HE risk
1.95%
0.45%
0.41%
0.33%
0.16%
0.16%
0.06%
0.06%
0.04%
0.04%
0.04%
0.04%
0.04%
0.04%
0.03%
0.03%
0.01%
0.01%
0.01%
0.34%
0.16%
0.06%
0.04%
0.04%
0.03%
0.01%
Deriv. of
prec. (D,
E, N)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
13
Table B
Hazardous Event
Number
Precursor code
Wrongside signalling failures:
HET-01 & 02P
PPT/C--J
HET-01 & 02P
PPT/C--P
HET-01 & 02P
PPUNCAT--J
HET-01 & 02P
PPC/L--J
HET-01 & 02P
PPSEM--J
HET-01 & 02P
PPUNCAT--P
HET-01 & 02P
PPC/L--P
HET-01 & 02P
PPSEM--P
Other environmental (Group 6):
HET-01 & 02P
PFE1--J
HET-01 & 02P
PFE2--J
HET-01 & 02P
PFE1--P
HET-01 & 02P
PFE2--P
Rolling stock:
HET-01 & 02P
PFTRS1--J
HET-01 & 02P
PFTRS2--J
HET-01 & 02P
PFTRS1--P
HET-01 & 02P
PFTRS2--P
Cat D SPADs / runaways:
HET-01 & 02P
PDRVERR-PE
HET-01 & 02P
PMISCERRPE
HET-01 & 02P
PDEFCOUPPE
HET-01 & 02P
PBRKDEF-PE
Train misroute:
HET-01 & 02P
PTSEPER
HET-01 & 02P
PTSEUNC
HET-01 & 02P
PTSEMEM
HET-01 & 02P
PTSEDEC
HET-01 & 02P
PTSEACT
Version 5.5/May 2008
Cause precursor description
Normaliser
National
frequency
(events/
normaliser)
PT WSF due to track circuit at junc signal
PT WSF due to track circuit at pl signal
PT WSF due to uncategorised at junc signal
PT WSF due to coloured light at junc signal
PT WSF due to semaphore signal at junc signal
PT WSF due to uncategorised at pl signal
PT WSF due to coloured light at pl signal
PT WSF due to semaphore signal at pl signal
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
8.09E-11
3.25E-11
2.05E-11
1.37E-11
9.99E-12
8.24E-12
5.49E-12
4.01E-12
PT SPAD due to other environmental conditions at junc
PT SPAD due to vegetation on the track at junc
PT SPAD due to other environmental conditions on pln line
PT SPAD due to vegetation on the track on pln line
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
5.66E-11
1.33E-11
1.77E-12
5.56E-13
PT SPAD due to brake failure at junc
PT SPAD due to traction control failure at junc
PT SPAD due to brake failure on pln line
PT SPAD due to traction control failure on pln line
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
1.06E-11
5.30E-12
5.02E-13
8.67E-14
PT runaway/Cat D SPAD due to driver error
PT runaway/Cat D SPAD due to unknown failure
PT runaway/Cat D SPAD due to coupling failure
PT runaway/Cat D SPAD due to vehicle defect/brake failure
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
7.38E-11
5.90E-11
0
0
PT misroute due to signaller perception issues
PT misroute due to unknown signaller issues
PT misroute due to signaller memory lapses
PT misroute due to signaller decision making failures
PT misroute due to signaller action failures
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
5.53E-11
4.15E-11
2.30E-11
1.38E-11
1.38E-11
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0493
0.0228
0.0091
0.0058
0.0038
0.0028
0.0023
0.0015
0.0011
0.0203
0.0159
0.0037
4.97E-04
1.56E-04
0.0046
0.0030
0.0015
1.41E-04
2.44E-05
0.0373
0.0207
0.0166
0
0
0.0415
0.0155
0.0117
0.0065
0.0039
0.0039
Risk cont.
(FWI / year)
0.0873
0.0426
0.0139
0.0108
0.0072
0.0053
0.0035
0.0024
0.0017
0.0378
0.0298
0.0070
7.58E-04
2.39E-04
0.0086
0.0056
0.0028
2.15E-04
3.71E-05
0.0132
0.0073
0.0059
0
0
0.0776
0.0291
0.0218
0.0121
0.0073
0.0073
Risk cont.
% of total
HE risk
15.00%
7.31%
2.40%
1.85%
1.23%
0.90%
0.61%
0.40%
0.30%
6.49%
5.11%
1.20%
0.13%
0.04%
1.48%
0.96%
0.48%
0.04%
0.01%
2.27%
1.26%
1.01%
0%
0%
13.33%
5.00%
3.75%
2.08%
1.25%
1.25%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
D
D
N
N
D
D
D
D
D
14
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
0.4003
0.0123
0.0069
100.00%
3.08%
1.73%
D
HET-03 & 02NP - Non-passenger train SPAD resulting in train collision (other than in station):
Ambiguous or incomplete information given by driver/signaller (Group 1):
HET-03 & 02NP NFC1--J
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc
Non pass. trn mls
1.19E-10
0.6008
0.0115
0.0062
HET-03 & 02NP
NFC1--JO
Non pass. trn mls
5.01E-11
0.0026
0.0029
0.73%
D
HET-03 & 02NP
NFC1--JP
HET-03 & 02NP
Non pass. trn mls
1.89E-11
9.86E-04
0.0011
0.27%
D
NFC1--JOS
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc SAS
O
NPT SPAD caused by miscomm of ambiguous or incomplete info at junc SAS
P
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt SAS O
Non pass. trn mls
1.10E-11
5.73E-04
4.58E-04
0.11%
D
HET-03 & 02NP
HET-03 & 02NP
NFC1--JS
NFC1--PO
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS O
Non pass. trn mls
Non pass. trn mls
1.03E-11
5.15E-12
5.39E-04
2.70E-04
4.31E-04
2.56E-04
0.11%
0.06%
D
D
HET-03 & 02NP
HET-03 & 02NP
NFC1--P
NFC1--PP
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line
NPT SPAD due to miscomm of ambiguous/incomplete info on pln line SAS P
Non pass. trn mls
Non pass. trn mls
3.21E-12
1.06E-12
1.68E-04
5.53E-05
1.60E-04
5.25E-05
0.04%
0.01%
D
D
HET-03 & 02NP
NFC1--JPS
NPT SPAD due to miscomm of ambiguous/incomplete info at shunt SAS P
Non pass. trn mls
8.65E-13
4.53E-05
3.62E-05
0.01%
E
Non pass. trn mls
1.10E-10
0.0120
0.0058
0.0128
0.0064
3.21%
1.60%
D
Non pass. trn mls
7.76E-11
0.0041
0.0045
1.12%
D
Non pass. trn mls
Non pass. trn mls
1.40E-11
7.19E-12
7.33E-04
3.76E-04
5.86E-04
4.17E-04
0.15%
0.10%
D
D
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
8.83E-12
5.98E-12
3.86E-12
1.02E-12
6.42E-13
4.62E-04
3.13E-04
2.02E-04
5.31E-05
3.36E-05
3.69E-04
2.97E-04
1.92E-04
4.25E-05
3.19E-05
0.09%
0.07%
0.05%
0.01%
0.01%
D
D
D
E
E
Wrong information given by driver/signaller (Group 1):
HET-03 & 02NP NFC3--J
NPT SPAD caused by miscomm arising from wrong information being given
at junc
HET-03 & 02NP NFC3--JO
NPT SPAD caused by miscomm arising from wrong information being given
at junc SAS O
HET-03 & 02NP NFC3--JS
NPT SPAD due to miscomm of wrong info given at shunt
HET-03 & 02NP NFC3--JP
NPT SPAD caused by miscomm arising from wrong information being given
at junc SAS P
HET-03 & 02NP NFC3--JOS
NPT SPAD due to miscomm of wrong info given at shunt SAS O
HET-03 & 02NP NFC3--PO
NPT SPAD due to miscomm of wrong info given on pln line SAS O
HET-03 & 02NP NFC3--P
NPT SPAD due to miscomm of wrong info given on pln line
HET-03 & 02NP NFC3--JPS
NPT SPAD due to miscomm of wrong info given at shunt SAS P
HET-03 & 02NP NFC3--PP
NPT SPAD due to miscomm of wrong info given on pln line SAS P
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
15
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Correct information given but misunderstood by driver/signaller (Group 1):
HET-03 & 02NP NFC2--J
NPT SPAD caused by miscomm arising from correct information being given
but misunderstood at junc
HET-03 & 02NP NFC2--JO
NPT SPAD caused by miscomm arising from correct information being given
but misunderstood at junc SAS O
HET-03 & 02NP NFC2--JP
NPT SPAD caused by miscomm arising from correct information being given
but misunderstood at junc SAS P
HET-03 & 02NP NFC2--JOS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt
SAS O
HET-03 & 02NP NFC2--JS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt
HET-03 & 02NP
NFC2--P
NPT SPAD due to miscomm of correct info given but misunderstood on pln
line
HET-03 & 02NP NFC2--PO
NPT SPAD due to miscomm of correct info given but misunderstood on pln
line SAS O
HET-03 & 02NP NFC2--JPS
NPT SPAD due to miscomm of correct info given but misunderstood at shunt
SAS P
HET-03 & 02NP NFC2--PP
NPT SPAD due to miscomm of correct info given but misunderstood on pln
line SAS P
Information not given by driver/signaller (Group 1):
HET-03 & 02NP NFC4--J
NPT SPAD caused by miscomm arising from no information being given at
junc
HET-03 & 02NP NFC4--JO
NPT SPAD caused by miscomm arising from no information being given at
junc SAS O
HET-03 & 02NP NFC4--JP
NPT SPAD caused by miscomm arising from no information being given at
junc SAS P
HET-03 & 02NP NFC4--P
NPT SPAD due to miscomm of info not given on pln line
HET-03 & 02NP NFC4--PO
NPT SPAD due to miscomm of info not given on pln line SAS O
HET-03 & 02NP NFC4--JS
NPT SPAD due to miscomm of info not given at shunt
HET-03 & 02NP NFC4--JOS
NPT SPAD due to miscomm of info not given at shunt SAS O
HET-03 & 02NP NFC4--JPS
NPT SPAD due to miscomm of info not given at shunt SAS P
HET-03 & 02NP NFC4--PP
NPT SPAD due to miscomm of info not given on pln line SAS P
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
Non pass. trn mls
6.53E-11
National
frequency
(events/ year)
0.0076
0.0034
Non pass. trn mls
3.43E-11
0.0018
0.0020
0.50%
D
Non pass. trn mls
1.36E-11
7.13E-04
7.91E-04
0.20%
D
Non pass. trn mls
1.28E-11
6.71E-04
5.37E-04
0.13%
D
Non pass. trn mls
7.29E-12
3.81E-04
3.05E-04
0.08%
D
Non pass. trn mls
5.08E-12
2.66E-04
2.52E-04
0.06%
D
Non pass. trn mls
3.53E-12
1.84E-04
1.75E-04
0.04%
D
Non pass. trn mls
2.79E-12
1.46E-04
1.17E-04
0.03%
D
Non pass. trn mls
1.22E-12
6.36E-05
6.05E-05
0.02%
E
Non pass. trn mls
2.18E-11
0.0025
0.0011
0.0027
0.0013
0.67%
0.32%
D
Non pass. trn mls
1.03E-11
5.38E-04
5.97E-04
0.15%
D
Non pass. trn mls
6.51E-12
3.41E-04
3.78E-04
0.09%
E
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
3.81E-12
1.06E-12
1.17E-12
1.15E-12
1.15E-12
7.30E-13
1.99E-04
5.53E-05
6.13E-05
6.04E-05
6.04E-05
3.82E-05
1.89E-04
5.26E-05
4.90E-05
4.83E-05
4.83E-05
3.63E-05
0.05%
0.01%
0.01%
0.01%
0.01%
0.01%
D
D
D
E
E
E
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.0080
0.0038
Risk cont.
% of total
HE risk
2.00%
0.95%
Deriv. of
prec. (D,
E, N)
D
16
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Driver fails to check signal aspect (Group 2):
HET-03 & 02NP NFD2--JOS
NPT SPAD due to driver failure to check signal aspect at shunt SAS O
HET-03 & 02NP NFD2--JO
NPT SPAD caused by failure to check signal aspect at junc SAS O
HET-03 & 02NP NFD2--JS
NPT SPAD due to driver failure to check signal aspect at shunt
HET-03 & 02NP NFD2--J
NPT SPAD caused by failure to check signal aspect at junc
HET-03 & 02NP NFD2--JP
NPT SPAD caused by failure to check signal aspect at junc SAS P
HET-03 & 02NP NFD2--P
NPT SPAD due to driver failure to check signal aspect on pln line
HET-03 & 02NP NFD2--PO
NPT SPAD due to driver failure to check signal aspect on pln line SAS O
Normaliser
National
frequency
(events/
normaliser)
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
HET-03 & 02NP
HET-03 & 02NP
NPT SPAD due to driver failure to check signal aspect at shunt SAS P
NPT SPAD due to driver failure to check signal aspect on pln line SAS P
Risk cont.
(FWI / year)
0.0380
0.0102
0.0094
0.0078
0.0061
0.0034
4.44E-04
3.32E-04
Risk cont.
% of total
HE risk
9.48%
2.56%
2.34%
1.95%
1.52%
0.84%
0.11%
0.08%
Deriv. of
prec. (D,
E, N)
2.45E-10
2.01E-10
1.87E-10
1.27E-10
7.13E-11
8.94E-12
6.68E-12
National
frequency
(events/ year)
0.0447
0.0128
0.0105
0.0098
0.0066
0.0037
4.67E-04
3.50E-04
Non pass. trn mls
Non pass. trn mls
5.58E-12
1.94E-12
2.92E-04
1.01E-04
2.33E-04
9.64E-05
0.06%
0.02%
D
D
Driver violation of rules/instructions (Group 2):
HET-03 & 02NP NFD6--J
NPT SPAD caused by violation of rules/instructions at junc
HET-03 & 02NP NFD6--JO
NPT SPAD caused by violation of rules/instructions at junc SAS O
HET-03 & 02NP NFD6--JOS
NPT SPAD due to driver violation of rules/instructions at shunt SAS O
HET-03 & 02NP NFD6--JS
NPT SPAD due to driver violation of rules/instructions at shunt
HET-03 & 02NP NFD6--PO
NPT SPAD due to driver violation of rules/instructions on pln line SAS O
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
2.62E-10
1.09E-10
5.51E-11
3.49E-11
1.34E-11
0.0255
0.0137
0.0057
0.0029
0.0018
7.01E-04
0.0223
0.0122
0.0051
0.0023
0.0015
6.66E-04
5.57%
3.04%
1.27%
0.58%
0.36%
0.17%
D
D
D
D
D
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
5.28E-12
3.29E-12
2.73E-12
2.76E-04
1.72E-04
1.43E-04
2.48E-04
1.63E-04
1.36E-04
0.06%
0.04%
0.03%
D
D
D
Non pass. trn mls
1.49E-12
9.97E-11
1.01E-10
8.37E-11
6.24E-11
6.83E-12
5.21E-12
2.66E-12
1.76E-12
6.23E-05
0.0161
0.0046
0.0042
0.0035
0.0029
3.21E-04
2.18E-04
1.32E-04
8.76E-05
0.02%
4.02%
1.16%
1.05%
0.87%
0.73%
0.08%
0.05%
0.03%
0.02%
E
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
7.79E-05
0.0191
0.0052
0.0053
0.0044
0.0033
3.57E-04
2.72E-04
1.39E-04
9.22E-05
NFD2--JPS
NFD2--PP
NFD6--JP
NFD6--P
NFD6--PP
NPT SPAD caused by violation of rules/instructions at junc SAS P
NPT SPAD due to driver violation of rules/instructions on pln line
NPT SPAD due to driver violation of rules/instructions on pln line SAS P
HET-03 & 02NP NFD6--JPS
NPT SPAD due to driver violation of rules/instructions at shunt SAS P
Driver fails to locate signal (Group 2):
HET-03 & 02NP NFD3--JO
NPT SPAD caused by failure to locate signal aspect at junc SAS O
HET-03 & 02NP NFD3--JOS
NPT SPAD due to driver failure to locate signal aspect at shunt SAS O
HET-03 & 02NP NFD3--JS
NPT SPAD due to driver failure to locate signal aspect at shunt
HET-03 & 02NP NFD3--J
NPT SPAD caused by failure to locate signal aspect at junc
HET-03 & 02NP NFD3--JP
NPT SPAD caused by failure to locate signal aspect at junc SAS P
HET-03 & 02NP NFD3--JPS
NPT SPAD due to driver failure to locate signal aspect at shunt SAS P
HET-03 & 02NP NFD3--P
NPT SPAD due to driver failure to locate signal aspect on pln line
HET-03 & 02NP NFD3--PO
NPT SPAD due to driver failure to locate signal aspect on pln line SAS O
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
17
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-03 & 02NP NFD3--PP
NPT SPAD due to driver failure to locate signal aspect on pln line SAS P
Normaliser
Non pass. trn mls
National
frequency
(events/
normaliser)
1.22E-12
National
frequency
(events/ year)
6.36E-05
Risk cont.
(FWI / year)
6.05E-05
Risk cont.
% of total
HE risk
0.02%
0.0123
0.0109
7.79E-04
6.54E-04
0.0037
9.99E-04
9.71E-04
6.49E-04
3.08%
2.72%
0.19%
0.16%
0.92%
0.25%
0.24%
0.16%
Deriv. of
prec. (D,
E, N)
E
Driver fails to react to cautionary aspect (Group 2):
HET-03 & 02NP NFD4--J
NPT SPAD caused by failure to react to caution aspect at junc
HET-03 & 02NP NFD4--P
NPT SPAD due to driver failure to react to caution aspect on pln line
HET-03 & 02NP NFD4--JS
NPT SPAD due to driver failure to react to caution aspect at shunt
Driver anticipates signal clearance (Group 2):
HET-03 & 02NP NFD1--JO
NPT SPAD caused by anticipation of signal clearance at junc SAS O
HET-03 & 02NP NFD1--JS
NPT SPAD due to driver anticipation of signal clearance at shunt
HET-03 & 02NP NFD1--JOS
NPT SPAD due to driver anticipation of signal clearance at shunt SAS O
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
2.35E-10
1.57E-11
1.56E-11
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
2.15E-11
2.32E-11
1.55E-11
0.0139
0.0123
8.20E-04
8.18E-04
0.0043
0.0011
0.0012
8.11E-04
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
NFD1--JP
NFD1--J
NFD1--P
NFD1--JPS
NPT SPAD caused by anticipation of signal clearance at junc SAS P
NPT SPAD caused by anticipation of signal clearance at junc
NPT SPAD due to driver anticipation of signal clearance on pln line
NPT SPAD due to driver anticipation of signal clearance at shunt SAS P
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
9.81E-12
5.28E-12
3.33E-12
2.00E-12
5.13E-04
2.76E-04
1.74E-04
1.05E-04
4.61E-04
2.52E-04
1.65E-04
8.39E-05
0.12%
0.06%
0.04%
0.02%
D
D
D
D
HET-03 & 02NP
NFD1--PO
NPT SPAD due to driver anticipation of signal clearance on pln line SAS O
Non pass. trn mls
8.75E-13
4.58E-05
4.35E-05
0.01%
E
HET-03 & 02NP
NFD1--PP
NPT SPAD due to driver anticipation of signal clearance on pln line SAS P
Non pass. trn mls
8.75E-13
4.58E-05
4.35E-05
0.01%
E
Driver ignorance of rules/instructions (Group 2):
HET-03 & 02NP NFD5--JO
NPT SPAD caused by ignorance of rules/instructions at junc SAS O
HET-03 & 02NP NFD5--JOS
NPT SPAD due to driver ignorance of rules/instructions at shunt SAS O
Non pass. trn mls
Non pass. trn mls
2.64E-11
1.45E-11
0.0034
0.0014
7.60E-04
0.0030
0.0012
6.08E-04
0.74%
0.31%
0.15%
D
D
HET-03 & 02NP
HET-03 & 02NP
NFD5--JS
NFD5--PO
NPT SPAD due to driver ignorance of rules/instructions at shunt
NPT SPAD due to driver ignorance of rules/instructions on pln line SAS O
Non pass. trn mls
Non pass. trn mls
1.29E-11
4.67E-12
6.72E-04
2.44E-04
5.38E-04
2.32E-04
0.13%
0.06%
D
D
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
NFD5--JP
NFD5--J
NFD5--PP
NPT SPAD caused by ignorance of rules/instructions at junc SAS P
NPT SPAD caused by ignorance of rules/instructions at junc
NPT SPAD due to driver ignorance of rules/instructions on pln line SAS P
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
2.26E-12
1.73E-12
1.17E-12
1.18E-04
9.05E-05
6.11E-05
1.06E-04
8.24E-05
5.80E-05
0.03%
0.02%
0.01%
D
D
D
HET-03 & 02NP
NFD5--JPS
NPT SPAD due to driver ignorance of rules/instructions at shunt SAS P
Non pass. trn mls
1.27E-12
6.66E-05
5.33E-05
0.01%
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
D
D
D
D
D
18
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-03 & 02NP NFD5--P
NPT SPAD due to driver ignorance of rules/instructions on pln line
Driver misreads by viewing wrong signal (Group 3):
HET-03 & 02NP NFR3--J
NPT SPAD caused by viewing the wrong signal at junc
HET-03 & 02NP NFR3--JO
NPT SPAD caused by viewing the wrong signal at junc SAS O
HET-03 & 02NP NFR3--JP
NPT SPAD caused by viewing the wrong signal at junc SAS P
HET-03 & 02NP NFR3--JOS
NPT SPAD due to driver viewing the wrong signal at shunt SAS O
HET-03 & 02NP NFR3--JS
NPT SPAD due to driver viewing the wrong signal at shunt
HET-03 & 02NP NFR3--P
NPT SPAD due to driver viewing the wrong signal on pln line
HET-03 & 02NP NFR3--PO
NPT SPAD due to driver viewing the wrong signal on pln line SAS O
HET-03 & 02NP NFR3--JPS
NPT SPAD due to driver viewing the wrong signal at shunt SAS P
HET-03 & 02NP NFR3--PP
NPT SPAD due to driver viewing the wrong signal on pln line SAS P
Driver views correct signal but misreads aspect (Group 3):
HET-03 & 02NP NFR2--JOS
NPT SPAD due to driver misreading aspect on correct signal at shunt SAS O
Normaliser
Non pass. trn mls
National
frequency
(events/
normaliser)
9.34E-13
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
1.40E-10
7.71E-11
3.40E-11
2.97E-11
1.96E-11
1.71E-12
1.36E-12
1.49E-12
9.42E-13
Non pass. trn mls
3.92E-11
National
frequency
(events/ year)
4.89E-05
0.0160
0.0073
0.0040
0.0018
0.0016
0.0010
8.93E-05
7.14E-05
7.79E-05
4.93E-05
0.0068
0.0021
Risk cont.
(FWI / year)
4.64E-05
0.0141
0.0066
0.0036
0.0016
0.0012
8.22E-04
8.48E-05
6.78E-05
6.23E-05
4.68E-05
0.0058
0.0016
Risk cont.
% of total
HE risk
0.01%
3.53%
1.65%
0.90%
0.40%
0.31%
0.21%
0.02%
0.02%
0.02%
0.01%
1.46%
0.41%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
E
E
D
HET-03 & 02NP
HET-03 & 02NP
NFR2--J
NFR2--JP
NPT SPAD caused by misreading aspect on correct signal at junc
NPT SPAD caused by misreading aspect on correct signal at junc SAS P
Non pass. trn mls
Non pass. trn mls
2.63E-11
2.28E-11
0.0014
0.0012
0.0012
0.0011
0.31%
0.27%
D
D
HET-03 & 02NP
NFR2--JO
NPT SPAD caused by misreading aspect on correct signal at junc SAS O
Non pass. trn mls
1.94E-11
0.0010
9.00E-04
0.22%
D
HET-03 & 02NP
HET-03 & 02NP
NFR2--JS
NFR2--P
NPT SPAD due to driver misreading aspect on correct signal at shunt
NPT SPAD due to driver misreading aspect on correct signal on pln line
Non pass. trn mls
Non pass. trn mls
1.42E-11
4.81E-12
7.43E-04
2.52E-04
5.94E-04
2.39E-04
0.15%
0.06%
D
D
HET-03 & 02NP
NFR2--JPS
NPT SPAD due to driver misreading aspect on correct signal at shunt SAS P
Non pass. trn mls
1.30E-12
6.82E-05
5.46E-05
0.01%
E
HET-03 & 02NP
NFR2--PO
Non pass. trn mls
8.25E-13
4.31E-05
4.10E-05
0.01%
E
HET-03 & 02NP
NFR2--PP
NPT SPAD due to driver misreading aspect on correct signal on pln line SAS
O
NPT SPAD due to driver misreading aspect on correct signal on pln line SAS
P
Non pass. trn mls
8.25E-13
4.31E-05
4.10E-05
0.01%
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
19
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Driver misreads previous signal (Group 3):
HET-03 & 02NP NFR1--J
NPT SPAD caused by misreading the previous signal aspect at junc
HET-03 & 02NP NFR1--JO
NPT SPAD caused by misreading the previous signal aspect at junc SAS O
Normaliser
National
frequency
(events/
normaliser)
Non pass. trn mls
Non pass. trn mls
HET-03 & 02NP
NFR1--JP
NPT SPAD caused by misreading the previous signal aspect at junc SAS P
HET-03 & 02NP
NFR1--JOS
HET-03 & 02NP
Risk cont.
(FWI / year)
4.45E-04
2.34E-04
7.99E-05
Risk cont.
% of total
HE risk
0.11%
0.06%
0.02%
Deriv. of
prec. (D,
E, N)
4.96E-12
1.72E-12
National
frequency
(events/ year)
4.99E-04
2.59E-04
8.99E-05
Non pass. trn mls
5.89E-13
3.08E-05
2.77E-05
0.01%
E
NPT SPAD due to driver misreading previous signal aspect at shunt SAS O
Non pass. trn mls
4.81E-13
2.52E-05
2.01E-05
0.01%
E
NFR1--JPS
NPT SPAD due to driver misreading previous signal aspect at shunt SAS P
Non pass. trn mls
4.81E-13
2.52E-05
2.01E-05
0.01%
E
HET-03 & 02NP
HET-03 & 02NP
NFR1--P
NFR1--PO
NPT SPAD due to driver misreading previous signal aspect on pln line
NPT SPAD due to driver misreading previous signal aspect on pln line SAS O
Non pass. trn mls
Non pass. trn mls
3.65E-13
3.04E-13
1.91E-05
1.59E-05
1.81E-05
1.51E-05
0.00%
0.00%
E
E
HET-03 & 02NP
NFR1--PP
NPT SPAD due to driver misreading previous signal aspect on pln line SAS P
Non pass. trn mls
3.04E-13
1.59E-05
1.51E-05
0.00%
E
Non pass. trn mls
3.37E-13
2.26E-11
8.96E-12
6.72E-12
Non pass. trn mls
3.22E-12
1.41E-05
0.0020
0.0013
4.45E-04
2.81E-04
3.84E-04
1.60E-04
0.00%
0.51%
0.33%
0.11%
0.07%
0.10%
0.04%
E
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
1.76E-05
0.0020
0.0012
4.69E-04
3.52E-04
3.96E-04
1.68E-04
Non pass. trn mls
Non pass. trn mls
2.57E-12
1.79E-12
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
1.35E-12
7.30E-13
3.56E-13
1.34E-04
9.37E-05
1.27E-04
7.05E-05
3.82E-05
1.86E-05
1.49E-04
7.49E-05
1.13E-04
5.64E-05
3.63E-05
2.06E-05
0.04%
0.02%
0.03%
0.01%
0.01%
0.01%
HET-03 & 02NP NFR1--JS
NPT SPAD due to driver misreading previous signal aspect at shunt
Driver misjudges train behaviour (Group 4):
HET-03 & 02NP NFJ2--J
NPT SPAD caused by misjudge of train behaviour at junc
HET-03 & 02NP NFJ2--P
NPT SPAD due to driver misjudge of train behaviour on pln line
HET-03 & 02NP NFJ2--JS
NPT SPAD due to driver misjudge of train behaviour at shunt
Driver misjudges environmental conditions (Group 4):
HET-03 & 02NP NFJ1--P
NPT SPAD due to driver misjudge of environmental conditions on pln line
HET-03 & 02NP NFJ1--J
NPT SPAD caused by misjudge of environmental conditions at junc
HET-03 & 02NP NFJ1--JS
NPT SPAD due to driver misjudge of environmental conditions at shunt
Unknown driver misjudgement (Group 4):
HET-03 & 02NP NFJ3--JS
NPT SPAD due to unknown driver misjudge at shunt
HET-03 & 02NP NFJ3--P
NPT SPAD due to unknown driver misjudge on pln line
HET-03 & 02NP NFJ3--J
NPT SPAD caused by unknown misjudge at junc
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
E
D
D
D
D
D
D
E
E
E
20
Table B
Normaliser
National
frequency
(events/
normaliser)
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
1.08E-10
9.73E-11
3.89E-11
3.20E-11
1.34E-11
1.32E-11
2.12E-12
1.92E-12
1.22E-12
Non pass. trn mls
Non pass. trn mls
1.25E-11
1.18E-11
National
frequency
(events/ year)
0.0161
0.0056
0.0051
0.0020
0.0017
7.01E-04
6.90E-04
1.11E-04
1.01E-04
6.36E-05
0.0047
6.55E-04
6.19E-04
NPT SPAD caused by handsignaller communication error at junc SAS P
Non pass. trn mls
1.09E-11
5.68E-04
6.30E-04
0.16%
E
NPT SPAD caused by signaller communication error at junc SAS O
NPT SPAD caused by other staff communication error at junc SAS O
NPT SPAD due to handsignaller communication error at shunt SAS O
NPT SPAD due to other staff communication error at shunt SAS O
NPT SPAD caused by other staff communication error at junc SAS P
NPT SPAD caused by signaller communication error at junc SAS P
NPT SPAD caused by other staff communication error at junc
NPT SPAD caused by signaller communication error at junc
NPT SPAD due to handsignaller communication error at shunt SAS P
NPT SPAD due to other staff communication error at shunt SAS P
NPT SPAD due to signaller communication error at shunt SAS O
NPT SPAD due to signaller communication error at shunt SAS P
NPT SPAD due to handsignaller communication error on pln line
NPT SPAD due to other staff communication error on pln line
NPT SPAD due to signaller communication error on pln line
NPT SPAD due to handsignaller communication error on pln line SAS O
NPT SPAD due to handsignaller communication error on pln line SAS P
NPT SPAD due to other staff communication error on pln line SAS O
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
9.97E-12
6.88E-12
2.79E-12
2.79E-12
2.36E-12
2.36E-12
2.12E-12
2.12E-12
1.92E-12
1.92E-12
1.92E-12
1.92E-12
1.46E-12
1.46E-12
1.46E-12
1.22E-12
1.22E-12
1.22E-12
5.21E-04
3.60E-04
1.46E-04
1.46E-04
1.23E-04
1.23E-04
1.11E-04
1.11E-04
1.01E-04
1.01E-04
1.01E-04
1.01E-04
7.64E-05
7.64E-05
7.64E-05
6.36E-05
6.36E-05
6.36E-05
4.63E-04
3.20E-04
1.17E-04
1.17E-04
1.11E-04
1.11E-04
9.89E-05
9.89E-05
8.05E-05
8.05E-05
8.05E-05
8.05E-05
7.25E-05
7.25E-05
7.25E-05
6.05E-05
6.05E-05
6.05E-05
0.12%
0.08%
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%
0.02%
0.02%
0.02%
D
E
D
D
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Hazardous Event
Number
Precursor code Cause precursor description
Uncategorised driver error (Group 5):
HET-03 & 02NP NFUC1--JO
NPT SPAD caused by uncategorised driver error at junc SAS O
HET-03 & 02NP NFUC1--J
NPT SPAD caused by uncategorised driver error at junc
HET-03 & 02NP NFUC1--JS
NPT SPAD due to uncategorised driver error at shunt
HET-03 & 02NP NFUC1--JOS
NPT SPAD due to uncategorised driver error at shunt SAS O
HET-03 & 02NP NFUC1--P
NPT SPAD due to uncategorised driver error on pln line
HET-03 & 02NP NFUC1--JP
NPT SPAD caused by uncategorised driver error at junc SAS P
HET-03 & 02NP NFUC1--PO
NPT SPAD due to uncategorised driver error on pln line SAS O
HET-03 & 02NP NFUC1--JPS
NPT SPAD due to uncategorised driver error at shunt SAS P
HET-03 & 02NP NFUC1--PP
NPT SPAD due to uncategorised driver error on pln line SAS P
Signaller communication errors (Group 5):
HET-03 & 02NP NFOHE3--J
NPT SPAD caused by handsignaller communication error at junc
HET-03 & 02NP NFOHE3--JO
NPT SPAD caused by handsignaller communication error at junc SAS O
HET-03 & 02NP
NFOHE3--JP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
HET-03 & 02NP
NFOHE1--JO
NFOHE4--JO
NFOHE3--JOS
NFOHE4--JOS
NFOHE4--JP
NFOHE1--JP
NFOHE4--J
NFOHE1--J
NFOHE3--JPS
NFOHE4--JPS
NFOHE1--JOS
NFOHE1--JPS
NFOHE3--P
NFOHE4--P
NFOHE1--P
NFOHE3--PO
NFOHE3--PP
NFOHE4--PO
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.0140
0.0050
0.0045
0.0016
0.0013
6.66E-04
6.21E-04
1.05E-04
8.05E-05
6.05E-05
0.0046
7.27E-04
6.87E-04
Risk cont.
% of total
HE risk
3.51%
1.25%
1.13%
0.41%
0.33%
0.17%
0.16%
0.03%
0.02%
0.02%
1.14%
0.18%
0.17%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
E
E
E
E
21
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-03 & 02NP NFOHE4--PP
NPT SPAD due to other staff communication error on pln line SAS P
HET-03 & 02NP NFOHE1--PO
NPT SPAD due to signaller communication error on pln line SAS O
HET-03 & 02NP NFOHE1--PP
NPT SPAD due to signaller communication error on pln line SAS P
HET-03 & 02NP NFOHE3--JS
NPT SPAD due to handsignaller communication error at shunt
HET-03 & 02NP NFOHE4--JS
NPT SPAD due to other staff communication error at shunt
HET-03 & 02NP NFOHE1--JS
NPT SPAD due to signaller communication error at shunt
Signaller operating errors (Group 5):
HET-03 & 02NP NFOHE2--JO
NPT SPAD caused by signal equipment operating error at junc SAS O
HET-03 & 02NP NFOHE2--JP
NPT SPAD caused by signal equipment operating error at junc SAS P
HET-03 & 02NP NFOHE2--J
NPT SPAD caused by signal equipment operating error at junc
HET-03 & 02NP NFOHE2--JOS NPT SPAD due to signal equipment operating error at shunt SAS O
HET-03 & 02NP NFOHE2--JPS
NPT SPAD due to signal equipment operating error at shunt SAS P
HET-03 & 02NP NFOHE2--P
NPT SPAD due to signal equipment operating error on pln line
HET-03 & 02NP NFOHE2--PO
NPT SPAD due to signal equipment operating error on pln line SAS O
HET-03 & 02NP NFOHE2--PP
NPT SPAD due to signal equipment operating error on pln line SAS P
HET-03 & 02NP NFOHE2--JS
NPT SPAD due to signal equipment operating error at shunt
Wrongside signalling failures:
HET-03 & 02NP NPT/C--J
NPT WSF due to track circuit at junc signal
HET-03 & 02NP NPSHUNT--JS NPT WSF due to shunt signal
HET-03 & 02NP NPC/L--J
NPT WSF due to coloured light at junc signal
HET-03 & 02NP NPT/C--JS
NPT WSF due to track circuit at junc shunt signal
HET-03 & 02NP NPUNCAT--J
NPT WSF due to uncategorised at junc signal
HET-03 & 02NP NPT/C--P
NPT WSF due to track circuit at pl signal
HET-03 & 02NP NPSEM--J
NPT WSF due to semaphore signal at junc signal
HET-03 & 02NP NPUNCAT--JS NPT WSF due to uncategorised at junc shunt signal
HET-03 & 02NP NPC/L--P
NPT WSF due to coloured light at pl signal
HET-03 & 02NP NPUNCAT--P
NPT WSF due to uncategorised at pl signal
HET-03 & 02NP NPSEM--P
NPT WSF due to semaphore signal at pl signal
Version 5.5/May 2008
Normaliser
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
National
frequency
(events/
normaliser)
1.22E-12
1.22E-12
1.22E-12
1.35E-12
1.35E-12
1.35E-12
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
6.88E-12
2.36E-12
2.12E-12
1.92E-12
1.92E-12
1.46E-12
1.22E-12
1.22E-12
1.35E-12
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
5.49E-11
3.84E-11
1.41E-11
1.95E-11
1.39E-11
1.54E-11
1.03E-11
4.93E-12
3.97E-12
3.90E-12
2.90E-12
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
6.36E-05
6.36E-05
6.36E-05
7.05E-05
7.05E-05
7.05E-05
0.0011
3.60E-04
1.23E-04
1.11E-04
1.01E-04
1.01E-04
7.64E-05
6.36E-05
6.36E-05
7.05E-05
0.0095
0.0029
0.0020
7.40E-04
0.0010
7.27E-04
8.05E-04
5.41E-04
2.58E-04
2.07E-04
2.04E-04
1.52E-04
Risk cont.
(FWI / year)
6.05E-05
6.05E-05
6.05E-05
5.64E-05
5.64E-05
5.64E-05
9.40E-04
3.20E-04
1.11E-04
9.89E-05
8.05E-05
8.05E-05
7.25E-05
6.05E-05
6.05E-05
5.64E-05
0.0093
0.0032
0.0016
8.21E-04
8.14E-04
8.06E-04
7.65E-04
6.00E-04
2.06E-04
1.97E-04
1.94E-04
1.44E-04
Risk cont.
% of total
HE risk
0.02%
0.02%
0.02%
0.01%
0.01%
0.01%
0.23%
0.08%
0.03%
0.02%
0.02%
0.02%
0.02%
0.02%
0.02%
0.01%
2.33%
0.80%
0.40%
0.20%
0.20%
0.20%
0.19%
0.15%
0.05%
0.05%
0.05%
0.04%
Deriv. of
prec. (D,
E, N)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
D
D
D
D
D
D
D
D
D
D
D
22
Table B
Hazardous Event
Number
Precursor code
Other environmental (Group 6):
HET-03 & 02NP NFE1--J
HET-03 & 02NP NFE1--P
HET-03 & 02NP NFE2--J
HET-03 & 02NP NFE1--JS
HET-03 & 02NP NFE2--P
HET-03 & 02NP NFE2--JS
Rolling stock:
HET-03 & 02NP NFTRS1--J
HET-03 & 02NP NFTRS2--J
HET-03 & 02NP NFTRS1--P
HET-03 & 02NP NFTRS2--P
HET-03 & 02NP NFTRS1--JS
HET-03 & 02NP NFTRS2--JS
Cat D SPADs / runaways
HET-03 & 02NP NDRVERR-NE
HET-03 & 02NP NBRKDEF-NE
HET-03 & 02NP NMISCERRNE
HET-03 & 02NP NVAND---NE
HET-03 & 02NP NCOUPDEFNE
Train misroute
HET-03 & 02NP NPSEPER
HET-03 & 02NP NPSEUNC
HET-03 & 02NP NPSEMEM
HET-03 & 02NP NPSEDEC
HET-03 & 02NP NPSEACT
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
NPT SPAD caused by other environmental conditions at junc
NPT SPAD due to other environmental conditions on pln line
NPT SPAD caused by vegetation on the track at junc
NPT SPAD due to other environmental conditions at shunt
NPT SPAD due to vegetation on the track on pln line
NPT SPAD due to vegetation on the track at shunt
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
4.06E-11
2.81E-11
9.79E-12
5.60E-12
1.46E-12
1.35E-12
NPT SPAD caused by brake failure at junc
NPT SPAD caused by traction control failure at junc
NPT SPAD due to brake failure on pln line
NPT SPAD due to traction control failure on pln line
NPT SPAD due to brake failure at shunt
NPT SPAD due to traction control failure at shunt
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
4.54E-11
1.25E-11
5.29E-12
1.46E-12
1.35E-12
1.35E-12
NPT runaway/Cat D SPAD due to driver error
NPT runaway/Cat D SPAD due to vehicle defect/brake failure
NPT runaway/Cat D SPAD due to unknown failure
NPT runaway/Cat D SPAD due to vandalism activity
NPT runaway/Cat D SPAD due to coupling failure
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
3.35E-09
1.59E-09
1.41E-09
8.81E-10
8.81E-11
NPT misroute due to signaller perception issues
NPT misroute due to unknown signaller issues
NPT misroute due to signaller memory lapses
NPT misroute due to signaller decision making failures
NPT misroute due to signaller action failures
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
6.12E-11
4.59E-11
2.55E-11
1.53E-11
1.53E-11
Cause precursor description
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0045
0.0021
0.0015
5.12E-04
2.93E-04
7.64E-05
7.05E-05
0.0035
0.0024
6.55E-04
2.77E-04
7.64E-05
7.05E-05
7.05E-05
0.3825
0.1751
0.0829
0.0737
0.0461
0.0046
0.0085
0.0032
0.0024
0.0013
8.01E-04
8.01E-04
Risk cont.
(FWI / year)
0.0047
0.0024
0.0014
5.68E-04
2.34E-04
7.25E-05
5.64E-05
0.0038
0.0026
7.27E-04
2.63E-04
7.25E-05
5.64E-05
5.64E-05
0.1994
0.0913
0.0432
0.0384
0.0240
0.0024
0.0095
0.0036
0.0027
0.0015
8.88E-04
8.88E-04
Risk cont.
% of total
HE risk
1.17%
0.59%
0.35%
0.14%
0.06%
0.02%
0.01%
0.95%
0.66%
0.18%
0.07%
0.02%
0.01%
0.01%
49.81%
22.81%
10.80%
9.60%
6.00%
0.60%
2.37%
0.89%
0.67%
0.37%
0.22%
0.22%
Deriv. of
prec. (D,
E, N)
D
D
D
D
E
E
D
E
D
E
E
E
D
D
D
D
D
D
D
D
D
D
23
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-02NP OTP - Collision between OTP and passenger train resulting from OTP incorrectly outside possession
HET-02NP OTP OT14I43
Passenger Train Driver Error leading to Collision between OTP and a
Passenger Train - OTP incorrectly outside possession limits
HET-02NP OTP OT14I14
Driver/Operator Error - Signal Passed at Danger leading to Collision between
OTP and a Passenger Train - OTP incorrectly outside possession limits
HET-02NP OTP
OT14I08
HET-02NP OTP
OT14I07
HET-02NP OTP
OT14I12
HET-02NP OTP
OT14I15
HET-02NP OTP
OT14I11
HET-02NP OTP
OT14I17
HET-02NP OTP
OT14I54
HET-02NP OTP
OT14I31
HET-02NP OTP
OT14I46
HET-02NP OTP
OT14I32
HET-02NP OTP
OT14I13
HET-02NP OTP
OT14I50
HET-02NP OTP
OT14I09
Version 5.5/May 2008
Defect on OTM leading to Collision between OTP and a Passenger Train OTP incorrectly outside possession limits
Defect on Other Vehicle leading to Collision between OTP and a Passenger
Train - OTP incorrectly outside possession limits
Driver/Operator Error - Inattention leading to Collision between OTP and a
Passenger Train - OTP incorrectly outside possession limits
Driver/Operator Error - Speeding leading to Collision between OTP and a
Passenger Train - OTP incorrectly outside possession limits
Driver/operator Error - Braking leading to Collision between OTP and a
Passenger Train - OTP incorrectly outside possession limits
Handsignaller Error leading to Collision between OTP and a Passenger Train OTP incorrectly outside possession limits
Unsafe System of Work Employed by Workers leading to Collision between
OTP and a Passenger Train - OTP incorrectly outside possession limits
Incorrect Management of IC Interface leading to Collision between OTP and a
Passenger Train - OTP incorrectly outside possession limits
Possession Irregularity leading to Collision between OTP and a Passenger
Train - OTP incorrectly outside possession limits
Infrastructure Defect leading to Collision between OTP and a Passenger Train
- OTP incorrectly outside possession limits
Driver/Operator Error - Propelling leading to Collision between OTP and a
Passenger Train - OTP incorrectly outside possession limits
Signaller Error leading to Collision between OTP and a Passenger Train OTP incorrectly outside possession limits
Depot Track Defect leading to Collision between OTP and a Passenger Train OTP incorrectly outside possession limits
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
OTP hrs
8.43E-09
0.0500
0.0170
0.0460
0.0156
100.00%
34.00%
D
OTP hrs
7.19E-09
0.0145
0.0133
29.00%
D
OTP hrs
1.24E-09
0.0025
0.0023
5.00%
D
OTP hrs
1.24E-09
0.0025
0.0023
5.00%
D
OTP hrs
1.24E-09
0.0025
0.0023
5.00%
D
OTP hrs
1.09E-09
0.0022
0.0020
4.40%
D
OTP hrs
1.09E-09
0.0022
0.0020
4.40%
E
OTP hrs
7.44E-10
0.0015
0.0014
3.00%
D
OTP hrs
6.45E-10
0.0013
0.0012
2.60%
D
OTP hrs
6.45E-10
0.0013
0.0012
2.60%
D
OTP hrs
4.46E-10
9.00E-04
8.28E-04
1.80%
D
OTP hrs
2.97E-10
6.00E-04
5.52E-04
1.20%
D
OTP hrs
2.48E-10
5.00E-04
4.60E-04
1.00%
D
OTP hrs
1.98E-10
4.00E-04
3.68E-04
0.80%
D
OTP hrs
4.96E-11
1.00E-04
9.20E-05
0.20%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
24
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-03 OTP - Collision between OTP and non-passenger train inside possession
HET-03 OTP
OT01I62
Inadequate Safe System of Work leading to Collision between OTP and an
Engineering Train - inside possession
HET-03 OTP
OT02I62
Inadequate Safe System of Work leading to Collision between OTP and
Another Machine - Inside Possession
HET-03 OTP
OT01I54
Unsafe System of Work Employed by Workers leading to Collision between
OTP and an Engineering Train - inside possession
HET-03 OTP
OT02I54
Unsafe System of Work Employed by Workers leading to Collision between
OTP and Another Machine - Inside Possession
HET-03 OTP
OT02I15
Driver/Operator Error - Speeding leading to Collision between OTP and
Another Machine - Inside Possession
HET-03 OTP
OT01I14
Driver/Operator Error - Signal Passed at Danger leading to Collision between
OTP and an Engineering Train - inside possession
HET-03 OTP
OT01I60
Engineering Train Driver Error leading to Collision between OTP and an
Engineering Train - inside possession
HET-03 OTP
OT02I12
Driver/Operator Error - Inattention leading to Collision between OTP and
Another Machine - Inside Possession
HET-03 OTP
OT02I14
Driver/Operator Error - Signal Passed at Danger leading to Collision between
OTP and Another Machine - Inside Possession
HET-03 OTP
OT01I12
Driver/Operator Error - Inattention leading to Collision between OTP and an
Engineering Train - inside possession
HET-03 OTP
OT01I50
Signaller Error leading to Collision between OTP and an Engineering Train inside possession
HET-03 OTP
OT01I59
Defect on OTP leading to Collision between OTP and an Engineering Train inside possession
HET-03 OTP
OT01I11
Driver/operator Error - Braking leading to Collision between OTP and an
Engineering Train - inside possession
HET-03 OTP
OT01I15
Driver/Operator Error - Speeding leading to Collision between OTP and an
Engineering Train - inside possession
HET-03 OTP
OT01I46
Possession Irregularity leading to Collision between OTP and an Engineering
Train - inside possession
HET-03 OTP
OT02I59
Defect on OTP leading to Collision between OTP and Another Machine Inside Possession
HET-03 OTP
OT02I11
Driver/operator Error - Braking leading to Collision between OTP and Another
Machine - Inside Possession
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
OTP hrs
2.08E-07
11.00
0.4200
0.0463
0.0098
100.00%
21.13%
D
OTP hrs
2.08E-06
4.200
0.0097
20.87%
D
OTP hrs
7.44E-08
0.1500
0.0035
7.55%
D
OTP hrs
7.44E-07
1.500
0.0034
7.45%
D
OTP hrs
5.45E-07
1.100
0.0025
5.47%
D
OTP hrs
4.96E-08
0.1000
0.0023
5.03%
D
OTP hrs
4.96E-08
0.1000
0.0023
5.03%
D
OTP hrs
4.96E-07
1.000
0.0023
4.97%
D
OTP hrs
4.96E-07
1.000
0.0023
4.97%
E
OTP hrs
2.48E-08
0.0500
0.0012
2.52%
D
OTP hrs
2.48E-08
0.0500
0.0012
2.52%
D
OTP hrs
9.92E-09
0.0200
4.66E-04
1.01%
D
OTP hrs
9.92E-09
0.0200
4.66E-04
1.01%
D
OTP hrs
9.92E-09
0.0200
4.66E-04
1.01%
D
OTP hrs
9.92E-09
0.0200
4.66E-04
1.01%
D
OTP hrs
9.92E-08
0.2000
4.60E-04
0.99%
D
OTP hrs
9.92E-08
0.2000
4.60E-04
0.99%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
25
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-03 OTP
OT02I46
Possession Irregularity leading to Collision between OTP and Another
Machine - Inside Possession
HET-03 OTP
OT02I50
Signaller Error leading to Collision between OTP and Another Machine Inside Possession
HET-03 OTP
OT01I07
Defect on Other Vehicle leading to Collision between OTP and an
Engineering Train - inside possession
HET-03 OTP
OT01I13
Driver/Operator Error - Propelling leading to Collision between OTP and an
Engineering Train - inside possession
HET-03 OTP
OT01I17
Handsignaller Error leading to Collision between OTP and an Engineering
Train - inside possession
HET-03 OTP
OT01I31
Incorrect Management of IC Interface leading to Collision between OTP and
an Engineering Train - inside possession
HET-03 OTP
OT01I32
Infrastructure Defect leading to Collision between OTP and an Engineering
Train - inside possession
HET-03 OTP
OT02I13
Driver/Operator Error - Propelling leading to Collision between OTP and
Another Machine - Inside Possession
HET-03 OTP
OT02I17
Handsignaller Error leading to Collision between OTP and Another Machine Inside Possession
HET-03 OTP
OT02I31
Incorrect Management of IC Interface leading to Collision between OTP and
Another Machine - Inside Possession
HET-03 OTP
OT02I32
Infrastructure Defect leading to Collision between OTP and Another Machine Inside Possession
HET-04 - Collision of train with object on line (not resulting in derailment)
HET-04A - Collision of train with object on line outside possession (not resulting in derailment)
HET-04A
RVSOTHF
RV struck - other cause - vehicle on lineside via fence/wall
HET-04A
RVSOTH
RV struck - other cause
HET-04A
RVSOTHB
RV struck - other cause - vehicle on lineside via bridge
HET-04A
RVSRTAE
RV struck - RTA - vehicle on lineside via embankment/bank
HET-04A
RVSRTAB
RV struck - RTA - vehicle on lineside via bridge
HET-04A
RVSRTAF
RV struck - RTA - vehicle on lineside via fence/wall
HET-04A
AANMOBJEUE Train collision with animals on the line
Version 5.5/May 2008
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
9.92E-08
National
frequency
(events/ year)
0.2000
Risk cont.
(FWI / year)
4.60E-04
Risk cont.
% of total
HE risk
0.99%
Deriv. of
prec. (D,
E, N)
D
OTP hrs
9.92E-08
0.2000
4.60E-04
0.99%
D
OTP hrs
4.96E-09
0.0100
2.33E-04
0.50%
D
OTP hrs
4.96E-09
0.0100
2.33E-04
0.50%
D
OTP hrs
4.96E-09
0.0100
2.33E-04
0.50%
D
OTP hrs
4.96E-09
0.0100
2.33E-04
0.50%
D
OTP hrs
4.96E-09
0.0100
2.33E-04
0.50%
D
OTP hrs
4.96E-08
0.1000
2.30E-04
0.50%
D
OTP hrs
4.96E-08
0.1000
2.30E-04
0.50%
D
OTP hrs
4.96E-08
0.1000
2.30E-04
0.50%
E
OTP hrs
4.96E-08
0.1000
2.30E-04
0.50%
D
1.71E-09
8.57E-10
8.57E-10
8.57E-10
4.28E-10
4.28E-10
1.84E-06
2881.8
2865.8
0.5714
0.2857
0.2857
0.2857
0.1429
0.1429
615.0
0.8723
0.8717
0.2544
0.1272
0.1272
0.1272
0.0636
0.0636
0.0224
100.00%
99.93%
29.16%
14.58%
14.58%
14.58%
7.29%
7.29%
2.57%
D
D
D
D
D
D
D
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
26
Table B
Normaliser
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
3.96E-07
3.93E-07
3.60E-07
132.0
131.0
120.0
0.0048
0.0048
0.0044
0.55%
0.55%
0.50%
D
D
D
BVANRUBLUE
RVSVANDF
MMATOTHEUE
Cause precursor description
Train collision with misc. objects placed on the line by vandals
Train collision with trees
Train collision with object: cause/object not established
Train collision with concrete blocks/troughing/stones placed on the line by
vandals
Train collision with bicycles/tricycles/child's scooter
Train collision with birds including ducks/geese/swans
Train collision with shopping trolleys/bin/pram/wheel barrow placed on the line
by vandals
Train collision with rubble/rubbish/debris placed on the line by vandals
RV struck - criminal/vandal activity - vehicle on lineside via fence/wall
Train collision with engineers material/equipment left foul (including boards)
National
frequency
(events/
normaliser)
1.44E-06
7.98E-07
7.20E-07
6.84E-07
Tot. trn mls
Tot. trn mls
Tot. trn mls
3.30E-07
1.29E-09
2.88E-07
110.0
0.4286
96.00
0.0040
0.0040
0.0035
0.46%
0.46%
0.40%
D
D
D
HET-04A
HET-04A
HET-04A
HET-04A
HET-04A
HET-04A
HET-04A
HET-04A
HET-04A
MINFAULTUE
HBALOBJEUE
MISCOBJEUE
BBLNOBJEUE
MMATDETOUE
BVANOBJTHR
BVANDETSUE
PTRAOBJEPF
BVANOBSUUE
Train collision with object due to infrastructure defect/fault
Train collision with high ballast
Train collision with miscellaneous objects on the line
Train collision with objects blown onto the line
Train collision with detonators on the line
Train Collision with objects thrown/fired at trains by vandals
Train collision with detonators placed on the line by vandals
Train collision with objects/debris fallen from trains
Train collision with object suspended from bridge/tunnel/signal by vandals
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
2.34E-07
1.68E-07
1.47E-07
1.35E-07
1.35E-07
1.08E-07
1.05E-07
6.00E-08
4.80E-08
78.00
56.00
49.00
45.00
45.00
36.00
35.00
20.00
16.00
0.0028
0.0020
0.0018
0.0016
0.0016
0.0013
0.0013
7.30E-04
5.84E-04
0.33%
0.23%
0.20%
0.19%
0.19%
0.15%
0.15%
0.08%
0.07%
D
D
D
D
D
D
D
D
D
HET-04A
HET-04A
YOBJECTSUF
YOBJECTSUH
Tot. trn mls
Tot. trn mls
3.90E-08
3.30E-08
13.00
11.00
4.74E-04
4.01E-04
0.05%
0.05%
D
D
HET-04A
HET-04A
HET-04A
HET-04A
HET-04A
BVANSOFMAT
BVANOHLE
ROHLOBJEUF
RLNSOBJEUF
ROBJSUSPUE
Train collision with object due to defective rail vehicle
Train collision with infrastructure (e.g. bridge, signal, cable) due to human
error
Train collision with sofa/mattress placed on the line by vandals
Train collision with debris from OHLE structures due to vandalism
Train collision with debris from OHLE structures
Train collision with debris from landslips
Train collision with object suspended from bridge/tunnel including icicles
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
3.00E-08
2.70E-08
1.20E-08
9.00E-09
9.00E-09
10.000
9.000
4.000
3.000
3.000
3.65E-04
3.28E-04
1.46E-04
1.09E-04
1.09E-04
0.04%
0.04%
0.02%
0.01%
0.01%
D
D
D
D
D
HET-04A
RBGDOBJEUF
Train collision with debris from overbridges
Tot. trn mls
9.00E-09
3.000
1.09E-04
0.01%
D
Hazardous Event
Number
HET-04A
HET-04A
HET-04A
HET-04A
Precursor code
BVANMISCUE
BTREOBJEUE
CAUNOTEST
BVANCONCUE
HET-04A
HET-04A
HET-04A
BBICYOBJUE
ABIRDOBJEUE
BVANTROLUE
HET-04A
HET-04A
HET-04A
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
480.0
266.0
240.0
228.0
Risk cont.
(FWI / year)
0.0175
0.0097
0.0088
0.0083
Risk cont.
% of total
HE risk
2.01%
1.11%
1.00%
0.95%
Deriv. of
prec. (D,
E, N)
D
D
D
D
27
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-04A
BVANTHRTRN Train collision with objects/debris (e.g. seat cushions) thrown from train by
vandals
HET-04A
MTCERROBJE Train collision with detonators/possession marker boards on the line due to
train crew error
HET-04A
MVFOOBJEUE Train collision with maintenance vehicles left foul
HET-04A
BVANVEHIUE
Train collision with empty vehicles (car/motorbike) driven on the line by
vandals
HET-04A
PLATOBJEUE
Train collision with objects fallen from platform
HET-04A
PLCOOBJEUE Train collision with debris from platform collapse
HET-04A
RVSOTHE
RV struck - other cause - vehicle on lineside via embankment/bank
HET-04A
RVSVANDB
RV struck - criminal/vandal activity - vehicle on lineside via bridge
HET-04A
RVSVANDE
RV struck - criminal/vandal activity - vehicle on lineside via embankment/bank
HET-04 OTP - Collision of OTP with object on line inside possession (not resulting in derailment)
HET-04 OTP
OT05I55T
Vandalism leading to Collision between OTP and an Obstruction on/near
Running Line - Inside Possession
HET-04 OTP
OT05I32T
Infrastructure Defect leading to Collision between OTP and an Obstruction
on/near Running Line - Inside Possession
HET-04 OTP
OT05I37T
Maintenance Equipment/Tools on/near Running Line leading to Collision
between OTP and an Obstruction on/near Running Line - Inside Possession
Normaliser
Tot. trn mls
National
frequency
(events/
normaliser)
9.00E-09
National
frequency
(events/ year)
3.000
Risk cont.
(FWI / year)
1.09E-04
Risk cont.
% of total
HE risk
0.01%
Deriv. of
prec. (D,
E, N)
D
Tot. trn mls
7.50E-09
2.500
9.12E-05
0.01%
D
Tot. trn mls
Tot. trn mls
6.00E-09
4.50E-09
2.000
1.500
7.30E-05
5.47E-05
0.01%
0.01%
D
D
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
1.50E-09
6.00E-10
0
0
0
0.5000
0.2000
0
0
0
1.82E-05
7.30E-06
0
0
0
0.00%
0.00%
0%
0%
0%
D
D
N
N
N
OTP hrs
5.49E-06
15.97
11.07
5.77E-04
4.00E-04
0.07%
0.05%
E
OTP hrs
1.19E-06
2.395
8.66E-05
0.01%
E
OTP hrs
5.46E-07
1.102
3.98E-05
0.00%
E
HET-04 OTP
OT05I20T
Inadequate Contractor Controls / Management leading to Collision between
OTP and an Obstruction on/near Running Line - Inside Possession
OTP hrs
2.61E-07
0.5269
1.90E-05
0.00%
E
HET-04 OTP
OT05I12T
OTP hrs
1.58E-07
0.3194
1.15E-05
0.00%
E
HET-04 OTP
OT05I59T
OTP hrs
7.92E-08
0.1597
5.77E-06
0.00%
E
HET-04 OTP
OT05I54T
Driver/Operator Error - Inattention leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession
Defect on OTP leading to Collision between OTP and an Obstruction on/near
Running Line - Inside Possession
Unsafe System of Work Employed by Workers leading to Collision between
OTP and an Obstruction on/near Running Line - Inside Possession
OTP hrs
7.92E-08
0.1597
5.77E-06
0.00%
E
HET-04 OTP
OT05I11T
Driver/Operator Error - Braking leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession
OTP hrs
3.96E-08
0.0798
2.89E-06
0.00%
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
28
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-04 OTP
OT05I15T
Driver/Operator Error - Speeding leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession
HET-04 OTP
OT05I31T
Incorrect Management of IC Interface leading to Collision between OTP and
an Obstruction on/near Running Line - Inside Possession
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
3.96E-08
National
frequency
(events/ year)
0.0798
Risk cont.
(FWI / year)
2.89E-06
Risk cont.
% of total
HE risk
0.00%
Deriv. of
prec. (D,
E, N)
E
OTP hrs
3.96E-08
0.0798
2.89E-06
0.00%
E
0.0741
0.0080
0.0045
100.00%
10.81%
6.04%
D
HET-06 - Collision between two passenger trains in station (permissive working)
HET-06A - Collision between two passenger trains in station (permissive working): rollbacks
HET-06A
PPWRDRSUPH Driver error during train set-up leading to roll back permissive working
collision
HET-06A
PPWRDRHBPH Driver failure to apply brakes leading to roll back permissive working collision
Pass. trn mls
1.91E-08
12.83
9.595
5.365
Pass. trn mls
6.89E-09
1.937
0.0016
2.18%
D
HET-06A
Pass. trn mls
5.61E-09
1.576
0.0013
1.77%
D
Pass. trn mls
2.56E-09
0.7186
6.00E-04
0.81%
D
Pass. trn mls
0
3.69E-09
0
0.0017
0.0017
0%
2.34%
2.34%
N
Pass. trn mls
0
1.037
1.037
Pass. trn mls
0
0
0
0%
N
Pass. trn mls
0
0
0
0%
N
Pass. trn mls
0
0
0
0%
N
PPWRDRBKPH Driver inadvertent brake release leading to roll back permissive working
collision
HET-06A
PPWRDRSDPH Driver error during train shutdown leading to roll back permissive working
collision
HET-06A
PPWRBRK-PF Defective brakes leading to roll back permissive working collision
HET-06B - Collision between two passenger trains in station (permissive working): low speed
HET-06B
PPWLDRSPPH Driver error while coupling/uncoupling units leading to permissive working
collision
HET-06B
PPWLDRREVH Driver error accidentally selecting reverse instead of forwards leading to
permissive working collision
HET-06B
PPWLDRBTPH Driver error using couple/ uncouple button leading to permissive working
collision
HET-06B
PPWLDRPRPH Driver error when propelling leading to permissive working collision
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
29
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-06C - Collision between two passenger trains in station (permissive working): potential for high speed
HET-06C
PPWPDRBKPH Driver misjudges braking/failure to control train leading to permissive working
collision
HET-06C
PPWPDRCOPH Driver loss of concentration leading to permissive working collision
HET-06C
PPWPDREXPH Driver inexperience leading to permissive working collision
HET-06C
TPWPAHRCPE Low adhesion due to rail contamination leading to permissive working
collision
HET-06C
PPWPBRK-PF
Defective brakes leading to permissive working collision
HET-06C
WPWPAHLFPE Low adhesion due to leaves leading to permissive workings
HET-06C
PPWPDROSPH Overspeeding leading to permissive working collision
HET-06C
PPWPCONTPF Defective train control equipment leading to permissive working collision
HET-06C
Pass. trn mls
3.56E-09
National
frequency
(events/ year)
2.197
1.000
Pass. trn mls
Pass. trn mls
Pass. trn mls
1.86E-09
1.51E-09
4.45E-10
0.5227
0.4244
0.1250
0.0153
0.0124
0.0037
20.66%
16.78%
4.94%
D
D
D
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
4.45E-10
0
0
0
0.1250
0
0
0
0.0037
0
0
0
4.94%
0%
0%
0%
D
N
N
N
Pass. trn mls
0
0
0
0%
N
Risk cont.
(FWI / year)
0.0644
0.0293
Risk cont.
% of total
HE risk
86.86%
39.53%
Deriv. of
prec. (D,
E, N)
D
Pass. trn mls
0
0
0
0%
N
HET-06C
Low adhesion and driver fails to adjust to conditions leading to permissive
working collision
WPWPAHWTPE Low adhesion due to weather conditions leading to permissive working
collisions
PPWPDRALPH Driver under the influence of alcohol leading to permissive working collision
Pass. trn mls
0
0
0
0%
N
HET-06C
PPWPDRILPH
Pass. trn mls
0
0
0
0%
N
0.1446
0.0037
0.0011
6.16E-04
5.85E-04
5.17E-04
100.00%
2.58%
0.77%
0.43%
0.40%
0.36%
D
D
D
D
HET-06C
TPWPAHDRPH
Normaliser
National
frequency
(events/
normaliser)
Driver medical condition leading to permissive working collision
HET-09 - Collision with buffer stops
HET-09A - Collision with buffer stops: rollbacks
HET-09A
PBSRDRGNPH Driver error (general) leading to roll back buffer stop collision
HET-09A
PBSRDRSUPH Driver error during train set-up leading to roll back buffer stop collision
HET-09A
PBSRDRHBPH Driver failure to apply brakes leading to roll back buffer stop collision
HET-09A
PBSRDRBKPH Driver inadvertent brake release leading to roll back buffer stop collision
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
4.74E-09
2.62E-09
2.49E-09
2.20E-09
11.21
4.469
1.333
0.7372
0.7010
0.6194
HET-09A
PBSRDRSDPH
Driver error during train shutdown leading to roll back buffer stop collision
Pass. trn mls
1.96E-09
0.5513
4.60E-04
0.32%
D
HET-09A
PBSRBRK-PF
Defective brakes leading to roll back buffer stop collision
Pass. trn mls
1.87E-09
0.5268
4.40E-04
0.30%
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
30
Table B
Normaliser
National
frequency
(events/
normaliser)
Pass. trn mls
Pass. trn mls
3.90E-09
2.83E-09
National
frequency
(events/ year)
2.420
1.097
0.7966
Pass. trn mls
Pass. trn mls
1.06E-09
5.14E-10
0.2975
0.1444
4.97E-04
2.41E-04
0.34%
0.17%
D
D
HET-09B
PBSLDRPRPH Driver error when propelling leading to buffer stop collision
HET-09C - Collision with buffer stops: potential for high speed
HET-09C
PBSMSBK2PH Driver misjudges braking leading to buffer stop collision
HET-09C
PBSPBRK-PF
Defective brakes leading to buffer stop collision
HET-09C
PBSPDRCOPH Driver loss of concentration leading to buffer stop collision
HET-09C
TBSPAHDRPH Low adhesion and driver fails to adjust to conditions leading to buffer stop
collision
HET-09C
PBSPDREXPH Driver inexperience leading to buffer stop collision
HET-09C
TBSPAHRCPE Low adhesion due to rail contamination leading to buffers stop collision
Pass. trn mls
3.01E-10
5.95E-09
3.03E-09
2.57E-09
1.13E-09
1.41E-04
0.1365
0.0559
0.0249
0.0241
0.0093
0.10%
94.41%
38.67%
17.24%
16.69%
6.46%
D
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
0.0845
4.256
1.673
0.8509
0.7223
0.3189
Pass. trn mls
Pass. trn mls
5.51E-10
3.95E-10
0.1549
0.1111
0.0052
0.0033
3.58%
2.25%
D
D
HET-09C
HET-09C
HET-09C
HET-09C
HET-09C
HET-09C
HET-09C
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.94E-10
2.79E-10
2.31E-10
2.31E-10
2.22E-10
1.60E-10
9.33E-11
0.0827
0.0784
0.0649
0.0649
0.0624
0.0449
0.0262
0.0028
0.0023
0.0022
0.0022
0.0021
0.0015
7.69E-04
1.91%
1.59%
1.50%
1.50%
1.44%
1.04%
0.53%
E
E
E
E
D
D
D
OTP hrs
1.39E-08
0.0667
0.0280
3.19E-04
1.34E-04
0.22%
0.09%
E
OTP hrs
6.61E-09
0.0133
6.39E-05
0.04%
E
OTP hrs
6.61E-09
0.0133
6.39E-05
0.04%
E
OTP hrs
1.65E-09
0.0033
1.60E-05
0.01%
E
Hazardous Event
Number
Precursor code Cause precursor description
HET-09B - Collision with buffer stops: low speed
HET-09B
PBSLDRSPPH Driver error while splitting units leading to buffer stop collision
HET-09B
PBSLDRREVH Driver error accidentally selecting reverse instead of forwards leading to
buffer stop collision
HET-09B
PBSDSCOMPH Driver-Shunter Communication failure leading to buffer stop collision
HET-09B
PBSLDRBTPH Driver error using couple/ uncouple button leading to buffer stop collision
PBSPDROSPH
WBSPAHLFPE
PBSPDRALPH
PBSPDRILPH
PBSPCONTPF
PBSRUNAWPH
WBSPAHWTPE
Overspeeding leading to buffer stop collision
Low adhesion due to leaves leading to buffer stops
Driver under the influence of alcohol leading to buffer stop collision
Driver medical condition leading to buffer stop collision
Defective train control equipment leading to buffer stop collision
Run Away Train leading to buffer stop collision
Low adhesion due to weather conditions leading to buffers stop collisions
HET-09 OTP - Collision with buffer stops: OTP inside possession
HET-09 OTP
OT03I12T
Driver/Operator Error - Inattention leading to Collision between OTP and
Buffers - Inside Possession
HET-09 OTP
OT03I11T
Driver/Operator Error - Braking leading to Collision between OTP and Buffers Inside Possession
HET-09 OTP
OT03I15T
Driver/Operator Error - Speeding leading to Collision between OTP and
Buffers - Inside Possession
HET-09 OTP
OT03I32T
Infrastructure Defect leading to Collision between OTP and Buffers - Inside
Possession
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.0040
0.0018
0.0013
Risk cont.
% of total
HE risk
2.79%
1.27%
0.92%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
31
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-09 OTP
OT03I59T
Defect on OTP leading to Collision between OTP and Buffers - Inside
Possession
HET-09 OTP
OT03I13T
Driver/Operator Error - Propelling leading to Collision between OTP and
Buffers - Inside Possession
HET-09 OTP
OT03I14T
Driver/Operator Error - Signal Passed at Danger leading to Collision between
OTP and Buffers - Inside Possession
HET-09 OTP
OT03I31T
Incorrect Management of IC Interface leading to Collision between OTP and
Buffers - Inside Possession
HET-10 - Passenger train collision with road vehicle on level crossing
HET-10A - Passenger train collision with road vehicle on level crossing: AOCL & ABCL only
HET-10A
VAOCLDRRTH RV driver error - RV struck by Train on AOCL
HET-10A
VAOCLDELTH RV driver deliberate action - RV struck by Train on AOCL
HET-10A
WAOCLENVTE RV incorrectly on LC due to environmental factors - RV struck by Train on
AOCL
HET-10A
VABCLDRRTH RV driver error - RV struck by Train on ABCL
HET-10A
VAOCLDRTTH Train driver error - RV struck by Train on AOCL
HET-10A
VAOCLSUIXPE RV driver suicide - RV struck by train on AOCL
HET-10A
VAOCLSTRTE RV stranded / failed on LC - RV struck by Train on AOCL
HET-10A
WABCLENVTE RV incorrectly on LC due to environmental factors - RV struck by Train on
ABCL
HET-10A
VABCLSTRTE
RV stranded / failed on LC - RV struck by Train on ABCL
HET-10A
LAOCLLSETF
AOCL lights fail to operate - RV struck by Train on AOCL
HET-10A
PAOCLOVSTH Train overspeeding - RV struck by Train on AOCL
HET-10A
PAOCLSPDTH SPAD at signal protecting the LC - RV struck by Train on AOCL
HET-10A
VABCLDELTH
RV driver deliberate action (zig-zag) - RV struck by Train on ABCL
HET-10A
LABCLBLETF
ABCL barriers/lights fail to operate - RV struck by Train on ABCL
HET-10A
PABCLOVSTH Train overspeeding - RV struck by Train on ABCL
HET-10A
PABCLSPDTH SPAD at signal protecting the LC - RV struck by Train on ABCL
HET-10A
VABCLSUIXPE RV driver suicide - RV struck by train on ABCL
HET-10A
VABCLRTATE
RV incorrectly on LC due to RTA - RV struck by train on ABCL
HET-10A
VAOCLRTATE RV incorrectly on LC due to RTA - RV struck by train on AOCL
Version 5.5/May 2008
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
1.65E-09
National
frequency
(events/ year)
0.0033
Risk cont.
(FWI / year)
1.60E-05
Risk cont.
% of total
HE risk
0.01%
Deriv. of
prec. (D,
E, N)
E
OTP hrs
1.32E-09
0.0027
1.28E-05
0.01%
E
OTP hrs
9.92E-10
0.0020
9.58E-06
0.01%
E
OTP hrs
3.31E-10
6.67E-04
3.19E-06
0.00%
E
Pass. trn mls
Pass. trn mls
Pass. trn mls
1.28E-08
3.02E-09
4.52E-10
15.62
4.856
3.610
0.8483
0.1270
3.031
0.4299
0.3239
0.0761
0.0114
100.00%
14.19%
10.69%
2.51%
0.38%
D
D
D
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
3.06E-10
3.06E-10
3.06E-10
2.12E-11
1.49E-11
0.0859
0.0859
0.0859
0.0059
0.0042
0.0077
0.0077
0.0019
5.34E-04
3.77E-04
0.25%
0.25%
0.06%
0.02%
0.01%
D
D
D
E
E
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
7.36E-12
9.34E-13
9.34E-13
9.34E-13
5.78E-13
5.78E-13
5.78E-13
5.78E-13
5.78E-13
0
0
0.0021
2.62E-04
2.62E-04
2.62E-04
1.62E-04
1.62E-04
1.62E-04
1.62E-04
1.62E-04
0
0
1.86E-04
2.36E-05
2.36E-05
2.36E-05
1.46E-05
1.46E-05
1.46E-05
1.46E-05
3.50E-06
0
0
0.01%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0%
0%
E
E
E
E
E
E
E
E
E
N
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
32
Table B
Normaliser
National
frequency
(events/
normaliser)
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.14E-09
5.94E-12
4.40E-13
HET-10B
VOC--SUIXPE
RV driver suicide - RV struck by train on OC
Pass. trn mls
HET-10B
VOCRTA--TE
RV incorrectly on LC due to RTA - RV struck by train on OC
Pass. trn mls
HET-10C - Passenger train collision with road vehicle on level crossing: other crossings (AHB, FP, MG/MCB/CCTV & all UWC)
HET-10C
VUWCTDRRTH RV driver error - RV struck by Train on UWC+T
Pass. trn mls
HET-10C
VAHB-DRRTH
RV driver error - RV struck by Train on AHB
Pass. trn mls
HET-10C
VUWC-DRRTH RV driver error - RV struck by Train on UWC
Pass. trn mls
HET-10C
VUWCMDRRTH RV driver error - RV struck by Train on UWC+MWL
Pass. trn mls
HET-10C
VUWCTDELTH RV driver deliberate action - RV struck by Train UWC+T
Pass. trn mls
HET-10C
VAHB-DELTH
RV driver deliberate action (zig-zag) - RV struck by Train on AHB
Pass. trn mls
HET-10C
VAHB-STRTE
RV stranded / failed on LC - RV struck by Train on AHB
Pass. trn mls
HET-10C
VUWC-DELTH RV driver deliberate action - RV struck by Train UWC
Pass. trn mls
HET-10C
LMG/BSKPTH
Signaller / Crossing keeper error - RV struck by Train on MG/B
Pass. trn mls
HET-10C
WAHB-ENVTE RV incorrectly on LC due to environmental factors - RV struck by Train on
Pass. trn mls
AHB
HET-10C
VMG/BDRRTH RV driver error - RV struck by Train on MG/B
Pass. trn mls
HET-10C
VUWCTSKPTH Signaller / Crossing keeper error (local op) - RV struck by Train on UWC+T
Pass. trn mls
3.56E-14
0
8.26E-09
6.42E-09
4.89E-09
3.06E-09
2.22E-09
2.14E-09
1.87E-09
8.01E-10
6.74E-10
6.44E-10
1.00E-05
0
10.16
2.320
1.805
1.375
0.8594
0.6238
0.6016
0.5242
0.2251
0.1893
0.1811
6.12E-10
4.87E-10
0.1719
0.1369
0.0455
0.0363
1.50%
1.20%
D
D
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
3.06E-10
3.06E-10
3.06E-10
3.06E-10
3.06E-10
2.63E-10
1.22E-09
1.61E-10
1.36E-10
6.97E-11
6.43E-11
0.0859
0.0859
0.0859
0.0859
0.0859
0.0740
0.3438
0.0454
0.0382
0.0196
0.0181
0.0228
0.0228
0.0228
0.0228
0.0228
0.0196
0.0153
0.0120
0.0101
0.0052
0.0048
0.75%
0.75%
0.75%
0.75%
0.75%
0.65%
0.51%
0.40%
0.33%
0.17%
0.16%
D
D
D
D
D
D
D
D
E
E
E
Hazardous Event
Number
Precursor code Cause precursor description
HET-10B - Passenger train collision with road vehicle on level crossing: open crossings (OC)
HET-10B
VOC--DRRTH
RV driver error - RV struck by Train on OC
HET-10B
VOC--DELTH
RV driver deliberate action - RV struck by Train OC
HET-10B
WOC--ENVTE
RV incorrectly on LC due to environmental factors - RV struck by Train on OC
VMG/BDELTH
VFP---VAND
LUWCM-LETF
VAHBRTA-TE
VFPDEL--TH
VUWC-STRTE
VAHBSUIXPE
VUWCTSTRTE
VMG/BSTRTE
VUWCMDELTH
LAHB-SKPTH
Version 5.5/May 2008
RV driver deliberate action - RV struck by Train on MG/B
Vandalism - RV struck by Train on FP
UWC + MWL lights fail to operate - RV struck by train on UWC+MWL
RV incorrectly on LC due to RTA - RV struck by train on AHB
RV (motorcyclist) deliberate action - RV struck by train on FP
RV stranded / failed on LC - RV struck by Train on UWC
RV driver suicide - RV struck by train on AHB
RV stranded / failed on LC - RV struck by Train on UWC+T
RV stranded / failed on LC - RV struck by Train on MG/B
RV driver deliberate action - RV struck by Train UWC+MWL
Signaller / Crossing keeper error (local op) - RV struck by Train on AHB
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.6034
0.6016
0.0017
1.24E-04
Risk cont.
(FWI / year)
0.0050
0.0050
1.39E-05
1.03E-06
Risk cont.
% of total
HE risk
0.17%
0.16%
0.00%
0.00%
Deriv. of
prec. (D,
E, N)
5.33E-09
0
2.596
0.6147
0.4781
0.3643
0.2277
0.1653
0.1594
0.1389
0.0596
0.0502
0.0480
0.00%
0%
85.65%
20.28%
15.77%
12.02%
7.51%
5.45%
5.26%
4.58%
1.97%
1.65%
1.58%
E
N
D
D
D
D
D
D
D
D
D
D
D
E
E
33
Table B
Hazardous Event
Number
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
Precursor code
VUWCSUIXPE
PMG/BOVSTH
PMG/BSPDTH
LMG/BLSETF
WMG/BENVTR
HET-10C
WUWC-ENVTE
HET-10C
WUWCTENVTE
HET-10C
HET-10C
HET-10C
HET-10C
LAHB-DETTF
LAHB-BLETF
PAHB-OVSTH
WUWCMENVTE
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
HET-10C
VUWCMSTRTE
VUWCTSUIXPE
VUWCLSUIXPE
VFP--SUIXPE
VMGBSUIXPE
VUWCRTA-TE
VUWCTRTATE
VUWCMRTATE
Cause precursor description
RV driver suicide - RV struck by train on UWC
Train overspeeding - RV struck by Train on MG/B
SPAD at signal protecting the LC - RV struck by Train on MG/B
MG/B lights/barriers fail to operate - RV struck by Train on MG/B
RV incorrectly on LC due to environmental factors - RV struck by Train on
MG/B
RV incorrectly on LC due to environmental factors - RV struck by Train on
UWC
RV incorrectly on LC due to environmental factors - RV struck by Train on
UWC+T
Failure to detect train approaching LC - RV struck by Train on AHB
AHB barriers/lights fail to operate - RV struck by Train on AHB
Train overspeeding - RV struck by Train on AHB
RV incorrectly on LC due to environmental factors - RV struck by Train on
UWC+MWL
RV stranded / failed on LC - RV struck by Train on UWC+MWL
RV driver suicide - RV struck by train on UWC +T
RV driver suicide - RV struck by train on UWC + MWL
RV driver suicide - RV struck by train on FP crossings
RV driver suicide - RV struck by train on MG/B
RV incorrectly on LC due to RTA - RV struck by train on UWC
RV incorrectly on LC due to RTA - RV struck by train on UWC + T
RV incorrectly on LC due to RTA - RV struck by train on UWC + MWL
HET-11 - Non-passenger train collision with road vehicle on level crossing
HET-11A - Non-passenger train collision with road vehicle on level crossing: AOCL & ABCL only
HET-11A
VAOCLDRRTH RV driver error - RV struck by Train on AOCL
HET-11A
VAOCLDELTH RV driver deliberate action - RV struck by Train on AOCL
HET-11A
WAOCLENVTE RV incorrectly on LC due to environmental factors - RV struck by Train on
AOCL
HET-11A
VABCLDRRTH RV driver error - RV struck by Train on ABCL
HET-11A
VAOCLDRTTH Train driver error - RV struck by Train on AOCL
Version 5.5/May 2008
Normaliser
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
National
frequency
(events/
normaliser)
3.06E-10
4.12E-11
4.12E-11
4.12E-11
3.57E-11
National
frequency
(events/ year)
0.0859
0.0116
0.0116
0.0116
0.0100
Risk cont.
(FWI / year)
0.0038
0.0031
0.0031
0.0031
0.0027
Risk cont.
% of total
HE risk
0.13%
0.10%
0.10%
0.10%
0.09%
Deriv. of
prec. (D,
E, N)
D
E
E
E
E
Pass. trn mls
3.39E-11
0.0095
0.0025
0.08%
E
Pass. trn mls
3.15E-11
0.0088
0.0023
0.08%
E
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.71E-11
2.71E-11
2.71E-11
6.30E-12
0.0076
0.0076
0.0076
0.0018
0.0020
0.0020
0.0020
4.69E-04
0.07%
0.07%
0.07%
0.02%
E
E
E
E
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.28E-12
8.51E-13
2.58E-13
0
0
0
0
0
6.40E-04
2.39E-04
7.26E-05
0
0
0
0
0
1.70E-04
1.07E-05
3.23E-06
0
0
0
0
0
0.01%
0.00%
0.00%
0%
0%
0%
0%
0%
E
E
E
N
N
N
N
N
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
1.33E-08
3.14E-09
4.69E-10
3.110
0.9392
0.6981
0.1641
0.0246
0.5077
0.0666
0.0504
0.0118
0.0018
100.00%
13.12%
9.93%
2.33%
0.35%
D
D
D
Non pass. trn mls
Non pass. trn mls
3.18E-10
3.18E-10
0.0166
0.0166
0.0012
0.0012
0.24%
0.24%
D
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
34
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-11A
VAOCLSTRTE RV stranded / failed on LC - RV struck by Train on AOCL
HET-11A
WABCLENVTE RV incorrectly on LC due to environmental factors - RV struck by Train on
ABCL
HET-11A
VABCLSTRTE
RV stranded / failed on LC - RV struck by Train on ABCL
HET-11A
VAOCLSUIXPE RV driver suicide - RV struck by train on AOCL
HET-11A
LAOCLLSETF
AOCL lights fail to operate - RV struck by Train on AOCL
HET-11A
PAOCLOVSTH Train overspeeding - RV struck by Train on AOCL
HET-11A
PAOCLSPDTH SPAD at signal protecting the LC - RV struck by Train on AOCL
HET-11A
VABCLDELTH
RV driver deliberate action (zig-zag) - RV struck by Train on ABCL
HET-11A
LABCLBLETF
ABCL barriers/lights fail to operate - RV struck by Train on ABCL
HET-11A
PABCLOVSTH Train overspeeding - RV struck by Train on ABCL
HET-11A
PABCLSPDTH SPAD at signal protecting the LC - RV struck by Train on ABCL
HET-11A
VABCLSUIXPE RV driver suicide - RV struck by train on ABCL
HET-11A
VAOCLRTATE RV incorrectly on LC due to RTA - RV struck by train on AOCL
HET-11A
VABCLRTATE
RV incorrectly on LC due to RTA - RV struck by train on ABCL
HET-11A OTP - OTP collision with road vehicle on level crossing inside possession: AOCL & ABCL only
HET-11A OTP
OT04I05AOL
Crossing User Error - RV struck by OTP on AOCL inside possession
HET-11A OTP
OT04I05ABL
Crossing User Error - RV struck by OTP on ABCL inside possession
HET-11A OTP
OT04I54AOL
Unsafe System of Work Employed by Workers - RV struck by OTP on AOCL
inside possession
HET-11A OTP
OT04I54ABL
Unsafe System of Work Employed by Workers - RV struck by OTP on ABCL
inside possession
HET-11A OTP
OT04I12AOL
OTP Driver/Operator Error (Inattention) - RV struck by OTP on AOCL inside
possession
HET-11A OTP
OT04I59AOL
Defect on OTP - RV struck by OTP on AOCL inside possession
HET-11A OTP
OT04I11AOL
OTP Driver/Operator Error (Braking) - RV struck by OTP on AOCL inside
possession
HET-11A OTP
OT04I14AOL
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
AOCL inside possession
HET-11A OTP
OT04I15AOL
OTP Driver/Operator Error (Speeding) - RV struck by OTP on AOCL inside
possession
HET-11A OTP
OT04I17AOL
Handsignaller Error - RV struck by OTP on AOCL inside possession
HET-11A OTP
OT04I32AOL
Infrastructure Defect - RV struck by OTP on AOCL inside possession
Version 5.5/May 2008
Normaliser
Non pass. trn mls
Non pass. trn mls
National
frequency
(events/
normaliser)
2.20E-11
1.55E-11
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
7.65E-12
3.18E-10
9.70E-13
9.70E-13
9.70E-13
6.00E-13
6.00E-13
6.00E-13
6.00E-13
6.00E-13
0
0
OTP hrs
OTP hrs
OTP hrs
5.72E-10
2.19E-10
1.14E-10
4.00E-04
0.0166
5.08E-05
5.08E-05
5.08E-05
3.14E-05
3.14E-05
3.14E-05
3.14E-05
3.14E-05
0
0
0.0021
0.0012
4.41E-04
2.31E-04
OTP hrs
4.38E-11
8.83E-05
1.64E-05
0.00%
D
OTP hrs
1.52E-11
3.07E-05
5.71E-06
0.00%
D
OTP hrs
OTP hrs
7.62E-12
7.62E-12
1.54E-05
1.54E-05
2.86E-06
2.86E-06
0.00%
0.00%
D
D
OTP hrs
7.62E-12
1.54E-05
2.86E-06
0.00%
D
OTP hrs
7.62E-12
1.54E-05
2.86E-06
0.00%
D
OTP hrs
OTP hrs
7.62E-12
7.62E-12
1.54E-05
1.54E-05
2.86E-06
2.86E-06
0.00%
0.00%
D
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0012
8.13E-04
Risk cont.
(FWI / year)
8.31E-05
5.87E-05
Risk cont.
% of total
HE risk
0.02%
0.01%
Deriv. of
prec. (D,
E, N)
E
E
2.89E-05
1.40E-05
3.66E-06
3.66E-06
3.66E-06
2.27E-06
2.27E-06
2.27E-06
2.27E-06
2.65E-08
0
0
3.95E-04
2.14E-04
8.20E-05
4.29E-05
0.01%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0%
0%
0.08%
0.04%
0.02%
0.01%
E
D
E
E
E
E
E
E
E
E
N
N
D
D
D
35
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-11A OTP
OT04I12ABL
OTP Driver/Operator Error (Inattention) - RV struck by OTP on ABCL inside
possession
HET-11A OTP
OT04I13AOL
OTP Driver/Operator Error (Propelling) - RV struck by OTP on AOCL inside
possession
HET-11A OTP
OT04I31AOL
Incorrect Management of IC Interface - RV struck by OTP on AOCL inside
possession
HET-11A OTP
OT04I46AOL
Possession Irregularity - RV struck by OTP on AOCL inside possession
HET-11A OTP
HET-11A OTP
HET-11A OTP
OT04I50AOL
OT04I59ABL
OT04I11ABL
HET-11A OTP
OT04I14ABL
HET-11A OTP
OT04I15ABL
HET-11A OTP
HET-11A OTP
HET-11A OTP
OT04I32ABL
OT04I17ABL
OT04I13ABL
HET-11A OTP
OT04I31ABL
HET-11A OTP
OT04I46ABL
Signaller Error - RV struck by OTP on AOCL inside possession
Defect on OTP - RV struck by OTP on ABCL inside possession
OTP Driver/Operator Error (Braking) - RV struck by OTP on ABCL inside
possession
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
ABCL inside possession
OTP Driver/Operator Error (Speeding) - RV struck by OTP on ABCL inside
possession
Infrastructure Defect - RV struck by OTP on ABCL inside possession
Handsignaller Error - RV struck by OTP on ABCL inside possession
OTP Driver/Operator Error (Propelling) - RV struck by OTP on ABCL inside
possession
Incorrect Management of IC Interface - RV struck by OTP on ABCL inside
possession
Possession Irregularity - RV struck by OTP on ABCL inside possession
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
5.84E-12
National
frequency
(events/ year)
1.18E-05
Risk cont.
(FWI / year)
2.19E-06
Risk cont.
% of total
HE risk
0.00%
Deriv. of
prec. (D,
E, N)
D
OTP hrs
3.81E-12
7.69E-06
1.43E-06
0.00%
D
OTP hrs
3.81E-12
7.69E-06
1.43E-06
0.00%
D
OTP hrs
3.81E-12
7.69E-06
1.43E-06
0.00%
D
OTP hrs
OTP hrs
OTP hrs
3.81E-12
2.92E-12
2.92E-12
7.69E-06
5.89E-06
5.89E-06
1.43E-06
1.09E-06
1.09E-06
0.00%
0.00%
0.00%
D
D
D
OTP hrs
2.92E-12
5.89E-06
1.09E-06
0.00%
D
OTP hrs
2.92E-12
5.89E-06
1.09E-06
0.00%
D
OTP hrs
OTP hrs
OTP hrs
2.92E-12
2.92E-12
1.46E-12
5.89E-06
5.89E-06
2.94E-06
1.09E-06
1.09E-06
5.47E-07
0.00%
0.00%
0.00%
D
D
D
OTP hrs
1.46E-12
2.94E-06
5.47E-07
0.00%
D
OTP hrs
1.46E-12
2.94E-06
5.47E-07
0.00%
D
5.47E-07
0.0118
0.0118
3.27E-05
2.43E-06
0.00%
2.33%
2.32%
0.01%
0.00%
D
1.34E-10
0
0.00%
0%
E
N
HET-11A OTP
OT04I50ABL
Signaller Error - RV struck by OTP on ABCL inside possession
HET-11B - Non-passenger train collision with road vehicle on level crossing: open crossings (OC)
HET-11B
VOC--DRRTH
RV driver error - RV struck by Train on OC
HET-11B
VOC--DELTH
RV driver deliberate action - RV struck by Train OC
HET-11B
WOC--ENVTE
RV incorrectly on LC due to environmental factors - RV struck by Train on OC
OTP hrs
1.46E-12
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
2.22E-09
6.17E-12
4.57E-13
2.94E-06
0.1167
0.1163
3.23E-04
2.39E-05
HET-11B
HET-11B
Non pass. trn mls
Non pass. trn mls
3.70E-14
0
1.94E-06
0
VOC--SUIXPE
VOCRTA--TE
Version 5.5/May 2008
RV driver suicide - RV struck by train on OC
RV incorrectly on LC due to RTA - RV struck by train on OC
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
E
E
36
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Normaliser
HET-11B OTP - OTP collision with road vehicle on level crossing inside possession: open crossings (OC)
HET-11B OTP
OT04I05-OC
Crossing User Error - RV struck by OTP on OC inside possession
OTP hrs
HET-11B OTP
OT04I54-OC
Unsafe System of Work Employed by Workers - RV struck by OTP on OC
OTP hrs
inside possession
HET-11B OTP
OT04I12-OC
OTP Driver/Operator Error (Inattention) - RV struck by OTP on OC inside
OTP hrs
possession
HET-11B OTP
OT04I59-OC
Defect on OTP - RV struck by OTP on OC inside possession
OTP hrs
HET-11B OTP
OT04I11-OC
OTP Driver/Operator Error (Braking) - RV struck by OTP on OC inside
OTP hrs
possession
HET-11B OTP
OT04I14-OC
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
OTP hrs
OC inside possession
HET-11B OTP
OT04I15-OC
OTP Driver/Operator Error (Speeding) - RV struck by OTP on OC inside
OTP hrs
possession
HET-11B OTP
OT04I17-OC
Handsignaller Error - RV struck by OTP on OC inside possession
OTP hrs
HET-11B OTP
OT04I32-OC
Infrastructure Defect - RV struck by OTP on OC inside possession
OTP hrs
HET-11B OTP
OT04I13-OC
OTP Driver/Operator Error (Propelling) - RV struck by OTP on OC inside
OTP hrs
possession
HET-11B OTP
OT04I31-OC
Incorrect Management of IC Interface - RV struck by OTP on OC inside
OTP hrs
possession
HET-11B OTP
OT04I46-OC
Possession Irregularity - RV struck by OTP on OC inside possession
OTP hrs
HET-11B OTP
OT04I50-OC
Signaller Error - RV struck by OTP on OC inside possession
OTP hrs
HET-11C - Non-passenger train collision with road vehicle on level crossing: other crossings (AHB, FP, MG/MCB/CCTV & all UWC)
HET-11C
VUWCTDRRTH RV driver error - RV struck by Train on UWC+T
Non pass. trn mls
HET-11C
VAHB-DRRTH
RV driver error - RV struck by Train on AHB
Non pass. trn mls
HET-11C
VUWC-DRRTH RV driver error - RV struck by Train on UWC
Non pass. trn mls
HET-11C
VUWCMDRRTH RV driver error - RV struck by Train on UWC+MWL
Non pass. trn mls
HET-11C
VUWCTDELTH RV driver deliberate action - RV struck by Train UWC+T
Non pass. trn mls
HET-11C
VAHB-DELTH
RV driver deliberate action (zig-zag) - RV struck by Train on AHB
Non pass. trn mls
HET-11C
VAHB-STRTE
RV stranded / failed on LC - RV struck by Train on AHB
Non pass. trn mls
HET-11C
VUWC-DELTH RV driver deliberate action - RV struck by Train UWC
Non pass. trn mls
HET-11C
LMG/BSKPTH
Signaller / Crossing keeper error - RV struck by Train on MG/B
Non pass. trn mls
HET-11C
WAHB-ENVTE RV incorrectly on LC due to environmental factors - RV struck by Train on
Non pass. trn mls
AHB
HET-11C
VMG/BDRRTH RV driver error - RV struck by Train on MG/B
Non pass. trn mls
Version 5.5/May 2008
National
frequency
(events/
normaliser)
Risk cont.
(FWI / year)
1.29E-04
9.71E-05
1.94E-05
Risk cont.
% of total
HE risk
0.03%
0.02%
0.00%
Deriv. of
prec. (D,
E, N)
2.59E-10
5.18E-11
National
frequency
(events/ year)
6.97E-04
5.22E-04
1.04E-04
6.91E-12
1.39E-05
2.59E-06
0.00%
D
3.45E-12
3.45E-12
6.97E-06
6.97E-06
1.29E-06
1.29E-06
0.00%
0.00%
D
D
3.45E-12
6.97E-06
1.29E-06
0.00%
D
3.45E-12
6.97E-06
1.29E-06
0.00%
D
3.45E-12
3.45E-12
1.73E-12
6.97E-06
6.97E-06
3.48E-06
1.29E-06
1.29E-06
6.47E-07
0.00%
0.00%
0.00%
D
D
D
1.73E-12
3.48E-06
6.47E-07
0.00%
D
1.73E-12
1.73E-12
6.47E-07
6.47E-07
0.4125
0.0984
0.0765
0.0583
0.0364
0.0264
0.0255
0.0222
0.0095
0.0080
0.0077
0.00%
0.00%
81.25%
19.38%
15.07%
11.48%
7.18%
5.21%
5.02%
4.38%
1.88%
1.58%
1.51%
D
D
8.58E-09
6.67E-09
5.08E-09
3.18E-09
2.31E-09
2.22E-09
1.94E-09
8.32E-10
7.00E-10
6.70E-10
3.48E-06
3.48E-06
1.964
0.4488
0.3490
0.2659
0.1662
0.1207
0.1163
0.1014
0.0435
0.0366
0.0350
D
D
D
D
D
D
D
D
D
D
6.35E-10
0.0332
0.0073
1.44%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
D
37
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-11C
VUWCTSKPTH Signaller / Crossing keeper error (local op) - RV struck by Train on UWC+T
Normaliser
Non pass. trn mls
National
frequency
(events/
normaliser)
5.06E-10
HET-11C
HET-11C
HET-11C
HET-11C
HET-11C
HET-11C
HET-11C
HET-11C
HET-11C
HET-11C
VMG/BDELTH
VFP---VAND
VAHBRTA-TE
LUWCM-LETF
VFPDEL--TH
VUWC-STRTE
VUWCTSTRTE
VMG/BSTRTE
VUWCMDELTH
LAHB-SKPTH
RV driver deliberate action - RV struck by Train on MG/B
Vandalism - RV struck by Train on FP
RV incorrectly on LC due to RTA - RV struck by train on AHB
UWC + MWL lights fail to operate - RV struck by train on UWC+MWL
RV (motorcyclist) deliberate action - RV struck by train on FP
RV stranded / failed on LC - RV struck by Train on UWC
RV stranded / failed on LC - RV struck by Train on UWC+T
RV stranded / failed on LC - RV struck by Train on MG/B
RV driver deliberate action - RV struck by Train UWC+MWL
Signaller / Crossing keeper error (local op) - RV struck by Train on AHB
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
3.18E-10
3.18E-10
3.18E-10
3.18E-10
3.18E-10
2.74E-10
1.68E-10
1.41E-10
7.25E-11
6.68E-11
0.0166
0.0166
0.0166
0.0166
0.0166
0.0143
0.0088
0.0074
0.0038
0.0035
0.0036
0.0036
0.0036
0.0036
0.0036
0.0031
0.0019
0.0016
8.31E-04
7.66E-04
0.72%
0.72%
0.72%
0.72%
0.72%
0.62%
0.38%
0.32%
0.16%
0.15%
D
D
D
D
D
D
D
E
E
E
HET-11C
HET-11C
HET-11C
HET-11C
PMG/BOVSTH
PMG/BSPDTH
LMG/BLSETF
WMG/BENVTR
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
4.28E-11
4.28E-11
4.28E-11
3.71E-11
0.0022
0.0022
0.0022
0.0019
4.91E-04
4.91E-04
4.91E-04
4.25E-04
0.10%
0.10%
0.10%
0.08%
E
E
E
E
HET-11C
WUWC-ENVTE
Non pass. trn mls
3.53E-11
0.0018
4.04E-04
0.08%
E
HET-11C
WUWCTENVTE
Non pass. trn mls
3.27E-11
0.0017
3.75E-04
0.07%
E
HET-11C
HET-11C
HET-11C
HET-11C
HET-11C
LAHB-DETTF
LAHB-BLETF
PAHB-OVSTH
VAHBSUIXPE
WUWCMENVTE
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
2.82E-11
2.82E-11
2.82E-11
1.27E-09
6.55E-12
0.0015
0.0015
0.0015
0.0665
3.43E-04
3.23E-04
3.23E-04
3.23E-04
1.06E-04
7.51E-05
0.06%
0.06%
0.06%
0.02%
0.01%
E
E
E
D
E
HET-11C
HET-11C
HET-11C
HET-11C
HET-11C
VUWCMSTRTE
VUWCSUIXPE
VUWCTSUIXPE
VUWCLSUIXPE
VFP--SUIXPE
Train overspeeding - RV struck by Train on MG/B
SPAD at signal protecting the LC - RV struck by Train on MG/B
MG/B lights/barriers fail to operate - RV struck by Train on MG/B
RV incorrectly on LC due to environmental factors - RV struck by Train on
MG/B
RV incorrectly on LC due to environmental factors - RV struck by Train on
UWC
RV incorrectly on LC due to environmental factors - RV struck by Train on
UWC+T
Failure to detect train approaching LC - RV struck by Train on AHB
AHB barriers/lights fail to operate - RV struck by Train on AHB
Train overspeeding - RV struck by Train on AHB
RV driver suicide - RV struck by train on AHB
RV incorrectly on LC due to environmental factors - RV struck by Train on
UWC+MWL
RV stranded / failed on LC - RV struck by Train on UWC+MWL
RV driver suicide - RV struck by train on UWC
RV driver suicide - RV struck by train on UWC +T
RV driver suicide - RV struck by train on UWC + MWL
RV driver suicide - RV struck by train on FP crossings
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
2.37E-12
3.18E-10
8.85E-13
2.68E-13
0
1.24E-04
0.0166
4.63E-05
1.40E-05
0
2.71E-05
2.65E-05
7.38E-08
2.24E-08
0
0.01%
0.01%
0.00%
0.00%
0%
E
D
E
E
N
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0265
Risk cont.
(FWI / year)
0.0058
Risk cont.
% of total
HE risk
1.14%
Deriv. of
prec. (D,
E, N)
D
38
Table B
National
frequency
(events/
Hazardous Event
normaliser)
Number
Precursor code Cause precursor description
Normaliser
HET-11C
VMGBSUIXPE
RV driver suicide - RV struck by train on MG/B
Non pass. trn mls
0
HET-11C
VUWCRTA-TE RV incorrectly on LC due to RTA - RV struck by train on UWC
Non pass. trn mls
0
HET-11C
VUWCTRTATE RV incorrectly on LC due to RTA - RV struck by train on UWC + T
Non pass. trn mls
0
HET-11C
VUWCMRTATE RV incorrectly on LC due to RTA - RV struck by train on UWC + MWL
Non pass. trn mls
0
HET-11C OTP - OTP collision with road vehicle on level crossing inside possession: other crossings (AHB, FP, MG/MCB/CCTV & all UWC)
HET-11C OTP
OT04I05-FP
Crossing User Error - RV struck by OTP on FP crossing inside possession
OTP hrs
1.16E-08
HET-11C OTP
HET-11C OTP
HET-11C OTP
HET-11C OTP
OT04I05UWT
OT04I05UWC
OT04I05MGB
OT04I54-FP
HET-11C OTP
HET-11C OTP
OT04I05AHB
OT04I54UWT
HET-11C OTP
OT04I54UWC
HET-11C OTP
OT04I54MGB
HET-11C OTP
OT04I05UWL
HET-11C OTP
OT04I54AHB
HET-11C OTP
OT04I12-FP
HET-11C OTP
OT04I12UWT
HET-11C OTP
OT04I12UWC
HET-11C OTP
HET-11C OTP
OT04I59-FP
OT04I11-FP
HET-11C OTP
OT04I14-FP
Version 5.5/May 2008
National
frequency
(events/ year)
0
0
0
0
0.0872
0.0234
Risk cont.
(FWI / year)
0
0
0
0
0.0162
0.0043
Risk cont.
% of total
HE risk
0%
0%
0%
0%
3.19%
0.86%
Deriv. of
prec. (D,
E, N)
N
N
N
N
D
Crossing User Error - RV struck by OTP on UWC+T inside possession
Crossing User Error - RV struck by OTP on UWC inside possession
Crossing User Error - RV struck by OTP on MG/B inside possession
Unsafe System of Work Employed by Workers - RV struck by OTP on FP
crossing inside possession
Crossing User Error - RV struck by OTP on AHB inside possession
Unsafe System of Work Employed by Workers - RV struck by OTP on
UWC+T inside possession
Unsafe System of Work Employed by Workers - RV struck by OTP on UWC
inside possession
Unsafe System of Work Employed by Workers - RV struck by OTP on MG/B
inside possession
Crossing User Error - RV struck by OTP on UWC+MWL inside possession
OTP hrs
OTP hrs
OTP hrs
OTP hrs
7.45E-09
6.93E-09
3.85E-09
2.32E-09
0.0150
0.0140
0.0078
0.0047
0.0028
0.0026
0.0014
8.68E-04
0.55%
0.51%
0.28%
0.17%
D
D
D
D
OTP hrs
OTP hrs
2.04E-09
1.49E-09
0.0041
0.0030
7.63E-04
5.58E-04
0.15%
0.11%
D
D
OTP hrs
1.39E-09
0.0028
5.19E-04
0.10%
D
OTP hrs
7.69E-10
0.0016
2.88E-04
0.06%
D
OTP hrs
5.76E-10
0.0012
2.16E-04
0.04%
D
Unsafe System of Work Employed by Workers - RV struck by OTP on AHB
inside possession
OTP Driver/Operator Error (Inattention) - RV struck by OTP on FP crossing
inside possession
OTP Driver/Operator Error (Inattention) - RV struck by OTP on UWC+T inside
possession
OTP Driver/Operator Error (Inattention) - RV struck by OTP on UWC inside
possession
Defect on OTP - RV struck by OTP on FP crossing inside possession
OTP Driver/Operator Error (Braking) - RV struck by OTP on FP crossing
inside possession
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
FP crossing inside possession
OTP hrs
4.07E-10
8.22E-04
1.53E-04
0.03%
D
OTP hrs
3.09E-10
6.23E-04
1.16E-04
0.02%
D
OTP hrs
1.99E-10
4.01E-04
7.45E-05
0.01%
D
OTP hrs
1.85E-10
3.73E-04
6.92E-05
0.01%
D
OTP hrs
OTP hrs
1.54E-10
1.54E-10
3.11E-04
3.11E-04
5.79E-05
5.79E-05
0.01%
0.01%
D
D
OTP hrs
1.54E-10
3.11E-04
5.79E-05
0.01%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
39
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-11C OTP
OT04I15-FP
OTP Driver/Operator Error (Speeding) - RV struck by OTP on FP crossing
inside possession
HET-11C OTP
OT04I17-FP
Handsignaller Error - RV struck by OTP on FP crossing inside possession
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
1.54E-10
National
frequency
(events/ year)
3.11E-04
Risk cont.
(FWI / year)
5.79E-05
Risk cont.
% of total
HE risk
0.01%
Deriv. of
prec. (D,
E, N)
D
OTP hrs
1.54E-10
3.11E-04
5.79E-05
0.01%
D
HET-11C OTP
OT04I32-FP
Infrastructure Defect - RV struck by OTP on FP crossing inside possession
OTP hrs
1.54E-10
3.11E-04
5.79E-05
0.01%
D
HET-11C OTP
OT04I54UWL
OTP hrs
1.15E-10
2.32E-04
4.32E-05
0.01%
D
HET-11C OTP
OT04I12MGB
OTP hrs
1.03E-10
2.07E-04
3.84E-05
0.01%
D
HET-11C OTP
HET-11C OTP
OT04I59UWT
OT04I11UWT
OTP hrs
OTP hrs
9.93E-11
9.93E-11
2.00E-04
2.00E-04
3.72E-05
3.72E-05
0.01%
0.01%
D
D
HET-11C OTP
OT04I14UWT
OTP hrs
9.93E-11
2.00E-04
3.72E-05
0.01%
D
HET-11C OTP
OT04I15UWT
OTP hrs
9.93E-11
2.00E-04
3.72E-05
0.01%
D
HET-11C OTP
HET-11C OTP
OT04I17UWT
OT04I32UWT
Unsafe System of Work Employed by Workers - RV struck by OTP on
UWC+MWL inside possession
OTP Driver/Operator Error (Inattention) - RV struck by OTP on MG/B inside
possession
Defect on OTP - RV struck by OTP on UWC+T inside possession
OTP Driver/Operator Error (Braking) - RV struck by OTP on UWC+T inside
possession
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
UWC+T inside possession
OTP Driver/Operator Error (Speeding) - RV struck by OTP on UWC+T inside
possession
Handsignaller Error - RV struck by OTP on UWC+T inside possession
Infrastructure Defect - RV struck by OTP on UWC+T inside possession
OTP hrs
OTP hrs
9.93E-11
9.93E-11
2.00E-04
2.00E-04
3.72E-05
3.72E-05
0.01%
0.01%
D
D
HET-11C OTP
HET-11C OTP
OT04I59UWC
OT04I11UWC
OTP hrs
OTP hrs
9.24E-11
9.24E-11
1.86E-04
1.86E-04
3.46E-05
3.46E-05
0.01%
0.01%
D
D
HET-11C OTP
OT04I14UWC
OTP hrs
9.24E-11
1.86E-04
3.46E-05
0.01%
D
HET-11C OTP
OT04I15UWC
OTP hrs
9.24E-11
1.86E-04
3.46E-05
0.01%
D
HET-11C OTP
HET-11C OTP
HET-11C OTP
OT04I17UWC
OT04I32UWC
OT04I13-FP
OTP hrs
OTP hrs
OTP hrs
9.24E-11
9.24E-11
7.72E-11
1.86E-04
1.86E-04
1.56E-04
3.46E-05
3.46E-05
2.89E-05
0.01%
0.01%
0.01%
D
D
D
HET-11C OTP
OT04I31-FP
OTP hrs
7.72E-11
1.56E-04
2.89E-05
0.01%
D
Version 5.5/May 2008
Defect on OTP - RV struck by OTP on UWC inside possession
OTP Driver/Operator Error (Braking) - RV struck by OTP on UWC inside
possession
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
UWC inside possession
OTP Driver/Operator Error (Speeding) - RV struck by OTP on UWC inside
possession
Handsignaller Error - RV struck by OTP on UWC inside possession
Infrastructure Defect - RV struck by OTP on UWC inside possession
OTP Driver/Operator Error (Propelling) - RV struck by OTP on FP crossing
inside possession
Incorrect Management of IC Interface - RV struck by OTP on FP crossing
inside possession
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
40
Table B
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
7.72E-11
National
frequency
(events/ year)
1.56E-04
Risk cont.
(FWI / year)
2.89E-05
Risk cont.
% of total
HE risk
0.01%
Deriv. of
prec. (D,
E, N)
D
Signaller Error - RV struck by OTP on FP crossing inside possession
OTP Driver/Operator Error (Inattention) - RV struck by OTP on AHB inside
possession
Defect on OTP - RV struck by OTP on MG/B inside possession
OTP Driver/Operator Error (Braking) - RV struck by OTP on MG/B inside
possession
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
MG/B inside possession
OTP Driver/Operator Error (Speeding) - RV struck by OTP on MG/B inside
possession
Handsignaller Error - RV struck by OTP on MG/B inside possession
Infrastructure Defect - RV struck by OTP on MG/B inside possession
OTP Driver/Operator Error (Propelling) - RV struck by OTP on UWC+T inside
possession
Incorrect Management of IC Interface - RV struck by OTP on UWC+T inside
possession
Possession Irregularity - RV struck by OTP on UWC+T inside possession
OTP hrs
OTP hrs
7.72E-11
5.43E-11
1.56E-04
1.10E-04
2.89E-05
2.04E-05
0.01%
0.00%
D
D
OTP hrs
OTP hrs
5.13E-11
5.13E-11
1.03E-04
1.03E-04
1.92E-05
1.92E-05
0.00%
0.00%
D
D
OTP hrs
5.13E-11
1.03E-04
1.92E-05
0.00%
D
OTP hrs
5.13E-11
1.03E-04
1.92E-05
0.00%
D
OTP hrs
OTP hrs
OTP hrs
5.13E-11
5.13E-11
4.97E-11
1.03E-04
1.03E-04
1.00E-04
1.92E-05
1.92E-05
1.86E-05
0.00%
0.00%
0.00%
D
D
D
OTP hrs
4.97E-11
1.00E-04
1.86E-05
0.00%
D
OTP hrs
4.97E-11
1.00E-04
1.86E-05
0.00%
D
Signaller Error - RV struck by OTP on UWC+T inside possession
OTP Driver/Operator Error (Propelling) - RV struck by OTP on UWC inside
possession
Incorrect Management of IC Interface - RV struck by OTP on UWC inside
possession
Possession Irregularity - RV struck by OTP on UWC inside possession
Signaller Error - RV struck by OTP on UWC inside possession
Defect on OTP - RV struck by OTP on AHB inside possession
OTP Driver/Operator Error (Braking) - RV struck by OTP on AHB inside
possession
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
AHB inside possession
OTP hrs
OTP hrs
4.97E-11
4.62E-11
1.00E-04
9.31E-05
1.86E-05
1.73E-05
0.00%
0.00%
D
D
OTP hrs
4.62E-11
9.31E-05
1.73E-05
0.00%
D
OTP hrs
OTP hrs
OTP hrs
OTP hrs
4.62E-11
4.62E-11
2.72E-11
2.72E-11
9.31E-05
9.31E-05
5.48E-05
5.48E-05
1.73E-05
1.73E-05
1.02E-05
1.02E-05
0.00%
0.00%
0.00%
0.00%
D
D
D
D
OTP hrs
2.72E-11
5.48E-05
1.02E-05
0.00%
D
Hazardous Event
Number
Precursor code Cause precursor description
HET-11C OTP
OT04I46-FP
Possession Irregularity - RV struck by OTP on FP crossing inside possession
HET-11C OTP
HET-11C OTP
OT04I50-FP
OT04I12AHB
HET-11C OTP
HET-11C OTP
OT04I59MGB
OT04I11MGB
HET-11C OTP
OT04I14MGB
HET-11C OTP
OT04I15MGB
HET-11C OTP
HET-11C OTP
HET-11C OTP
OT04I17MGB
OT04I32MGB
OT04I13UWT
HET-11C OTP
OT04I31UWT
HET-11C OTP
OT04I46UWT
HET-11C OTP
HET-11C OTP
OT04I50UWT
OT04I13UWC
HET-11C OTP
OT04I31UWC
HET-11C OTP
HET-11C OTP
HET-11C OTP
HET-11C OTP
OT04I46UWC
OT04I50UWC
OT04I59AHB
OT04I11AHB
HET-11C OTP
OT04I14AHB
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
41
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-11C OTP
OT04I15AHB
OTP Driver/Operator Error (Speeding) - RV struck by OTP on AHB inside
possession
HET-11C OTP
OT04I17AHB
Handsignaller Error - RV struck by OTP on AHB inside possession
HET-11C OTP
OT04I32AHB
Infrastructure Defect - RV struck by OTP on AHB inside possession
HET-11C OTP
OT04I13MGB
OTP Driver/Operator Error (Propelling) - RV struck by OTP on MG/B inside
possession
HET-11C OTP
OT04I31MGB
Incorrect Management of IC Interface - RV struck by OTP on MG/B inside
possession
HET-11C OTP
OT04I46MGB
Possession Irregularity - RV struck by OTP on MG/B inside possession
HET-11C OTP
HET-11C OTP
OT04I50MGB
OT04I12UWL
HET-11C OTP
OT04I13AHB
HET-11C OTP
OT04I31AHB
HET-11C OTP
HET-11C OTP
HET-11C OTP
HET-11C OTP
OT04I46AHB
OT04I50AHB
OT04I59UWL
OT04I11UWL
HET-11C OTP
OT04I14UWL
HET-11C OTP
OT04I15UWL
HET-11C OTP
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
2.72E-11
National
frequency
(events/ year)
5.48E-05
Risk cont.
(FWI / year)
1.02E-05
Risk cont.
% of total
HE risk
0.00%
Deriv. of
prec. (D,
E, N)
D
OTP hrs
OTP hrs
OTP hrs
2.72E-11
2.72E-11
2.56E-11
5.48E-05
5.48E-05
5.17E-05
1.02E-05
1.02E-05
9.61E-06
0.00%
0.00%
0.00%
D
D
D
OTP hrs
2.56E-11
5.17E-05
9.61E-06
0.00%
D
OTP hrs
2.56E-11
5.17E-05
9.61E-06
0.00%
D
OTP hrs
OTP hrs
2.56E-11
1.54E-11
5.17E-05
3.10E-05
9.61E-06
5.76E-06
0.00%
0.00%
D
D
OTP hrs
1.36E-11
2.74E-05
5.09E-06
0.00%
D
OTP hrs
1.36E-11
2.74E-05
5.09E-06
0.00%
D
OTP hrs
OTP hrs
OTP hrs
OTP hrs
1.36E-11
1.36E-11
7.68E-12
7.68E-12
2.74E-05
2.74E-05
1.55E-05
1.55E-05
5.09E-06
5.09E-06
2.88E-06
2.88E-06
0.00%
0.00%
0.00%
0.00%
D
D
D
D
OTP hrs
7.68E-12
1.55E-05
2.88E-06
0.00%
D
OTP hrs
7.68E-12
1.55E-05
2.88E-06
0.00%
D
OT04I17UWL
Signaller Error - RV struck by OTP on MG/B inside possession
OTP Driver/Operator Error (Inattention) - RV struck by OTP on UWC+MWL
inside possession
OTP Driver/Operator Error (Propelling) - RV struck by OTP on AHB inside
possession
Incorrect Management of IC Interface - RV struck by OTP on AHB inside
possession
Possession Irregularity - RV struck by OTP on AHB inside possession
Signaller Error - RV struck by OTP on AHB inside possession
Defect on OTP - RV struck by OTP on UWC+MWL inside possession
OTP Driver/Operator Error (Braking) - RV struck by OTP on UWC+MWL
inside possession
OTP Driver/Operator Error (Signal Passed at Danger) - RV struck by OTP on
UWC+MWL inside possession
OTP Driver/Operator Error (Speeding) - RV struck by OTP on UWC+MWL
inside possession
Handsignaller Error - RV struck by OTP on UWC+MWL inside possession
OTP hrs
7.68E-12
1.55E-05
2.88E-06
0.00%
D
HET-11C OTP
OT04I32UWL
Infrastructure Defect - RV struck by OTP on UWC+MWL inside possession
OTP hrs
7.68E-12
1.55E-05
2.88E-06
0.00%
D
HET-11C OTP
OT04I13UWL
OTP Driver/Operator Error (Propelling) - RV struck by OTP on UWC+MWL
inside possession
OTP hrs
3.84E-12
7.75E-06
1.44E-06
0.00%
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
42
Table B
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
3.84E-12
National
frequency
(events/ year)
7.75E-06
Risk cont.
(FWI / year)
1.44E-06
Risk cont.
% of total
HE risk
0.00%
Deriv. of
prec. (D,
E, N)
D
OTP hrs
3.84E-12
7.75E-06
1.44E-06
0.00%
D
OTP hrs
3.84E-12
7.75E-06
1.44E-06
0.00%
D
HET-12 - Derailment of passenger trains
HET-12
RLNS----UF
Running into landslip leading to train derailment
HET-12
XSGM----PH
Signaller/ crossing keeper error leading to PT derailment
HET-12
XDSC----PF
Defective S&C leading to PT derailment
HET-12
BVAN----UE
Running into items placed on the track by vandals leading to train derailment
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
3.56E-09
2.96E-09
2.96E-09
2.67E-09
9.139
1.000
0.8333
0.8333
0.7500
3.129
0.3132
0.2610
0.2610
0.2349
100.00%
10.01%
8.34%
8.34%
7.51%
D
D
D
D
HET-12
HET-12
RSCR----UE
VBND----UE
Rail bridge collapse - scour leading to train derailment
Running into vehicles through boundary fence leading to train derailment
Pass. trn mls
Pass. trn mls
8.89E-11
1.19E-09
0.0250
0.3333
0.1931
0.1793
6.17%
5.73%
E
D
HET-12
HET-12
HET-12
HET-12
HET-12
PTRA----PF
BTRE----UE
TBKR----PF
TBCK----PF
TSPG----PF
Running into objects fallen from trains leading to PT derailment
Running into trees leading to train derailment
Broken rail leading to PT derailment
Buckled rail leading to PT derailment
Gauge spread (assumed always slow speed) leading to PT derailment
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
1.78E-09
1.19E-09
1.12E-09
1.12E-09
2.96E-09
0.5000
0.3333
0.3143
0.3143
0.8333
0.1647
0.1044
0.0984
0.0984
0.0977
5.26%
3.34%
3.15%
3.15%
3.12%
D
D
D
D
D
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
RTUNWALLUF
PSPD----PH
TTWS----PF
AANM----UE
TFSH----PF
PCRW----PH
XPRD----PH
RSLP----PF
RBSHCOL-UE
PWHL----PF
PAXB----PF
Running into debris in the tunnel leading to train derailment
SPAD at S&C leading to PT derailment
Track twist leading to PT derailment
Running into large animals leading to train derailment
Broken fishplate leading to PT derailment
Other driver/train crew error at S&C leading to PT derailment
Track maintenance staff errors leading to PT derailment
Subsidence/ landslip under track leading to PT derailment
Rail bridge collapse - bridge bashing leading to train derailment
Wheel failure leading to PT Derailment
Seized axle box bearing leading to PT derailment
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.22E-10
7.33E-10
6.67E-10
5.93E-10
5.59E-10
5.59E-10
5.59E-10
5.59E-10
2.13E-11
4.45E-10
4.19E-10
0.0625
0.2060
0.1875
0.1667
0.1572
0.1572
0.1572
0.1572
0.0060
0.1250
0.1179
0.0733
0.0645
0.0618
0.0522
0.0518
0.0492
0.0492
0.0492
0.0464
0.0412
0.0388
2.34%
2.06%
1.97%
1.67%
1.65%
1.57%
1.57%
1.57%
1.48%
1.32%
1.24%
D
D
D
D
D
D
D
D
E
D
D
Hazardous Event
Number
Precursor code Cause precursor description
HET-11C OTP
OT04I31UWL
Incorrect Management of IC Interface - RV struck by OTP on UWC+MWL
inside possession
HET-11C OTP
OT04I46UWL
Possession Irregularity - RV struck by OTP on UWC+MWL inside possession
HET-11C OTP
OT04I50UWL
Version 5.5/May 2008
Signaller Error - RV struck by OTP on UWC+MWL inside possession
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
43
Table B
Hazardous Event
Number
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
Precursor code
YMSC----PE
XSCO----PH
XPOS----PF
TTUNBKR-PF
VBGV----UE
SWRG----PF
PSHN----PH
MMAT----UE
BBLN----UE
WSNO----UE
BFLL----UE
Cause precursor description
Miscellaneous/ unknown causes on plain line leading to PT derailment
Incorrect scotch and clip of points leading to PT derailment
Points in the wrong position and not detected leading to PT derailment
Broken rail in tunnel leading to PT derailment
Running into vehicles fallen from overbridge leading to train derailment
Wrongside signal failure at S&C leading to PT derailment
Shunter errors leading to PT derailment
Running into Engineers materials left foul leading to train derailment
Running into items blown onto the line leading to train derailment
Running into snow/ice leading to train derailment
Running into items that have fallen onto the line leading to train derailment
Normaliser
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
National
frequency
(events/
normaliser)
4.19E-10
4.19E-10
4.19E-10
1.08E-10
2.22E-10
3.73E-10
2.22E-10
2.22E-10
2.22E-10
2.22E-10
2.22E-10
HET-12
HET-12
RBGD----UF
RBLD----UF
Pass. trn mls
Pass. trn mls
2.22E-10
2.22E-10
0.0625
0.0625
0.0196
0.0196
0.63%
0.63%
E
D
HET-12
HET-12
HET-12
HET-12
PSUS----PF
PBUF----PF
PAXL----PF
RBSH----UE
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.10E-10
2.10E-10
2.10E-10
2.13E-10
0.0589
0.0589
0.0589
0.0600
0.0194
0.0194
0.0194
0.0188
0.62%
0.62%
0.62%
0.60%
D
D
D
E
HET-12
XSCM----PF
Running into to debris from overbridges leading to train derailment
Running into debris from lineside structures/buildings leading to train
derailment
Suspension system/bogie failures leading to PT derailment
Buffer locking leading to PT derailment
Axle failure leading to PT derailment
Bridge bashing leading to bridge displacement (not collapse) and train
derailment
Movement of points under train (equipment faults) leading to PT derailment
Pass. trn mls
2.10E-10
0.0589
0.0185
0.59%
D
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
PSNT----PF
RDRN----UF
POSL----PH
RBGS----UF
PWHF----PF
PCATDR--PH
TTKD----UE
Severe braking/snatch leading to PT derailment
Drainage culvert/pipework collapse leading to train derailment
Overspeeding leading to PT derailment
Rail bridge structural failure leading to train derailment
Wheel flats or wheel/tyre wear beyond limits leading to PT derailment
Cat D SPAD or runaway leading to PT derailment
Track damage from other undetected derailment leading to train derailment
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
1.78E-10
1.78E-10
1.16E-10
7.12E-12
1.19E-10
2.22E-10
7.12E-11
0.0500
0.0500
0.0327
0.0020
0.0333
0.0625
0.0200
0.0165
0.0157
0.0156
0.0155
0.0110
0.0073
0.0066
0.53%
0.50%
0.50%
0.49%
0.35%
0.23%
0.21%
E
E
D
E
E
E
E
HET-12
HET-12
HET-12
PCUP----PF
RWAL----UF
VMVE----UE
Coupling failure leading to PT derailment
Running into debris from retaining walls leading to train derailment
Running into maintenance vehicles leading to train derailment
Pass. trn mls
Pass. trn mls
Pass. trn mls
3.56E-11
3.56E-11
1.78E-11
0.0100
0.0100
0.0050
0.0033
0.0031
0.0016
0.11%
0.10%
0.05%
E
E
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.1179
0.1179
0.1179
0.0303
0.0625
0.1047
0.0625
0.0625
0.0625
0.0625
0.0625
Risk cont.
(FWI / year)
0.0388
0.0369
0.0369
0.0355
0.0336
0.0328
0.0196
0.0196
0.0196
0.0196
0.0196
Risk cont.
% of total
HE risk
1.24%
1.18%
1.18%
1.13%
1.07%
1.05%
0.63%
0.63%
0.63%
0.63%
0.63%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
44
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-12
UTRN----UE
Running into train derailed while in depots/sidings leading to train derailment
Normaliser
Pass. trn mls
National
frequency
(events/
normaliser)
1.78E-11
HET-12
HET-12
HET-12
HET-12
HET-12
HET-12
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
7.12E-12
1.78E-12
1.78E-12
3.56E-13
1.78E-13
1.78E-13
0.0020
5.00E-04
5.00E-04
1.00E-04
5.00E-05
5.00E-05
6.26E-04
1.57E-04
1.57E-04
3.29E-05
1.65E-05
1.57E-05
0.02%
0.01%
0.01%
0.00%
0.00%
0.00%
E
E
E
E
E
E
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
6.27E-08
4.83E-08
2.90E-08
2.41E-08
2.41E-08
57.44
13.82
2.167
1.667
1.000
0.8333
0.8333
0.5812
0.3344
0.0482
0.0371
0.0215
0.0185
0.0179
100.00%
57.54%
8.29%
6.38%
3.69%
3.19%
3.08%
D
D
D
D
D
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
1.93E-08
1.93E-08
0.6667
0.6667
0.0148
0.0143
2.55%
2.46%
D
D
BBLD----UE
WWIN----UE
ROHL----UF
RQAK----UE
WFLD----UE
RSIG----UF
Running into objects from building site leading to train derailment
High winds leading to train derailment
Running into debris from OHLE structures leading to train derailment
Structural damage due to earthquake leading to train derailment
Running into flooding leading to train derailment
Running into debris from signalling gantries leading to train derailment
HET-13 - Derailment of non-passenger train
HET-13 FTP - Derailment of freight trains on passenger lines outside possession
HET-13 FTP
TTWS----FF
Track twist leading to FT derailment on Pass. lines
HET-13 FTP
TSPG----FF
Gauge spread leading to FT derailment on Pass. lines
HET-13 FTP
XDSC----FF
Defective S&C leading to FT derailment on Pass. lines
HET-13 FTP
FSNT----FF
Severe braking/Snatch leading to FT derailment on Pass. lines
HET-13 FTP
XMISC---FF
Miscellaneous/unknown causes on S&C leading to FT derailment on Pass.
lines
HET-13 FTP
TMSC----FF
Misc. track faults leading to FT derailment on Pass. lines
HET-13 FTP
FCRW----FH
Other driver/train crew error at S&C leading to FT derailment on Pass. lines
National
frequency
(events/ year)
0.0050
Risk cont.
(FWI / year)
0.0016
Risk cont.
% of total
HE risk
0.05%
Deriv. of
prec. (D,
E, N)
E
HET-13 FTP
XSGM----FH
Signaller/ crossing keeper error leading to FT derailment on Pass. Lines
Frt. tr. mi. on ps. lines
1.93E-08
0.6667
0.0143
2.46%
D
HET-13 FTP
HET-13 FTP
TTUNBKR-FF
YMSC----FE
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
5.43E-09
1.45E-08
0.1875
0.5000
0.0117
0.0111
2.01%
1.91%
D
D
HET-13 FTP
HET-13 FTP
FSHN----FH
VBND----UE
Broken rail in tunnel leading to FT derailment on Pass. lines
Miscellaneous/ unknown causes on plain line leading to FT derailment on
Pass. lines
Shunter errors leading to FT derailment on Pass. lines
Running into vehicles through boundary fence leading to train derailment
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
1.45E-08
1.20E-09
0.5000
0.0414
0.0107
0.0102
1.85%
1.76%
D
D
HET-13 FTP
HET-13 FTP
RSCR----UE
FSUS----FF
Rail bridge collapse - scour leading to train derailment
Suspension system/bogie failures leading to FT derailment on Pass. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
9.00E-11
9.65E-09
0.0031
0.3333
0.0099
0.0074
1.70%
1.28%
E
D
HET-13 FTP
HET-13 FTP
FMARS---FH
FSPD----FH
Marshalling of train leading to FT derailment on Pass. lines
Signal passed at danger at S&C leading to FT derailment on Pass. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
9.65E-09
9.94E-09
0.3333
0.3433
0.0074
0.0074
1.28%
1.27%
D
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
45
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 FTP
XSCM----FF
Movement of points under train (equipment faults) leading to FT derailment
on Pass. lines
HET-13 FTP
FTRA----FF
Running into objects fallen from trains leading to FT derailment on Pass. lines
Normaliser
Frt. tr. mi. on ps. lines
National
frequency
(events/
normaliser)
9.65E-09
Frt. tr. mi. on ps. lines
9.05E-09
0.3125
0.0069
1.20%
D
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
FCATDR--FH
FBUF----FF
TBCK----FF
FWHL----FF
XSCO----FH
Cat D SPAD or runaway leading to FT derailment on pass. lines
Buffer locking leading to FT derailment on Pass. lines
Buckled rail leading to FT derailment on Pass. lines
Wheel failure leading to FT derailment on Pass. lines
Incorrect scotch and clip of points leading to FT derailment on Pass. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
9.65E-09
4.83E-09
4.83E-09
4.51E-09
4.51E-09
0.3333
0.1667
0.1667
0.1559
0.1559
0.0062
0.0037
0.0036
0.0035
0.0033
1.07%
0.64%
0.62%
0.60%
0.58%
D
D
D
D
D
HET-13 FTP
FWHF----FF
Frt. tr. mi. on ps. lines
3.62E-09
0.1250
0.0028
0.48%
D
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
RLNS----UF
FAXB----FF
TFSH----FF
RBSHCOL-UE
BVAN----UE
Wheel flats or wheel/tyre wear beyond limits leading to FT derailment on
Pass. lines
Running into landslip leading to train derailment
Seized axle box bearing leading to FT derailment on Pass. lines
Broken fishplate leading to FT derailment on Pass. lines
Rail bridge collapse - bridge bashing leading to train derailment
Running into items placed on the track by vandals leading to train derailment
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
3.60E-09
3.38E-09
3.38E-09
2.16E-11
2.70E-09
0.1243
0.1169
0.1169
7.46E-04
0.0932
0.0027
0.0026
0.0026
0.0024
0.0020
0.46%
0.45%
0.45%
0.41%
0.34%
D
D
D
E
D
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
FOSL----FH
VBGV----UE
FVAND---FF
FAXL----FF
XPRD----FH
XFOS----FF
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
1.89E-09
2.25E-10
2.43E-09
2.18E-09
1.81E-09
1.81E-09
0.0654
0.0078
0.0841
0.0754
0.0625
0.0625
0.0020
0.0019
0.0018
0.0017
0.0013
0.0013
0.34%
0.33%
0.31%
0.29%
0.23%
0.23%
D
D
D
D
D
D
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
FUNDER--FF
FCUP----FF
TBKR----FF
RSLP----FF
Overspeeding leading to FT derailment on Pass. lines
Running into vehicles fallen from overbridge leading to train derailment
Other vandalism leading to FT derailment on Pass. lines
Axle failure leading to FT derailment on Pass. lines
Track maintenance staff errors leading to FT derailment on Pass. lines
Points in the wrong position and not detected leading to FT derailment on
Pass. lines
Twisted underframe leading to FT derailment on Pass. lines
Coupling failure leading to FT derailment on Pass. lines
Broken rail leading to FT derailment on Pass. lines
Subsidence/ landslip under track leading to FT derailment on Pass. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
1.69E-09
1.69E-09
1.69E-09
1.69E-09
0.0585
0.0585
0.0585
0.0585
0.0013
0.0013
0.0013
0.0013
0.22%
0.22%
0.22%
0.22%
D
D
D
D
HET-13 FTP
FMSC----FF
Miscellaneous mechanical faults leading to FT derailment on Pass. lines
Frt. tr. mi. on ps. lines
1.51E-09
0.0521
0.0012
0.20%
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.3333
Risk cont.
(FWI / year)
0.0072
Risk cont.
% of total
HE risk
1.23%
Deriv. of
prec. (D,
E, N)
D
46
Table B
Hazardous Event
Number
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
Precursor code
TCYCLIC-FF
BTRE----UE
FLOAD---FH
RBGS----UF
RTUNWALLUF
AANM----UE
SWRG----FF
MMAT----UE
BBLN----UE
WSNO----UE
BFLL----UE
Cause precursor description
Cyclic top leading to FT derailment on Pass. lines
Running into trees leading to train derailment
Uneven loading leading to FT derailment on Pass. lines
Rail bridge structural failure leading to train derailment
Running into debris in the tunnel leading to train derailment
Running into large animals leading to train derailment
Wrongside signal failure at S&C leading to FT derailment on Pass. lines
Running into Engineers materials left foul leading to train derailment
Running into items blown onto the line leading to train derailment
Running into snow/ice leading to train derailment
Running into items that have fallen onto the line leading to train derailment
Normaliser
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
National
frequency
(events/
normaliser)
1.48E-09
1.20E-09
1.10E-09
7.20E-12
2.25E-10
6.00E-10
3.77E-10
2.25E-10
2.25E-10
2.25E-10
2.25E-10
HET-13 FTP
HET-13 FTP
RBGD----UF
RBLD----UF
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
2.25E-10
2.25E-10
0.0078
0.0078
1.67E-04
1.67E-04
0.03%
0.03%
E
D
HET-13 FTP
RBSH----UE
Frt. tr. mi. on ps. lines
2.16E-10
0.0075
1.60E-04
0.03%
E
HET-13 FTP
HET-13 FTP
RDRN----UF
TTKD----UE
Running into to debris from overbridges leading to train derailment
Running into debris from lineside structures/buildings leading to train
derailment
Bridge bashing leading to bridge displacement (not collapse) and train
derailment
Drainage culvert/pipework collapse leading to train derailment
Track damage from other undetected derailment leading to train derailment
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
1.80E-10
7.20E-11
0.0062
0.0025
1.33E-04
5.53E-05
0.02%
0.01%
E
E
HET-13 FTP
HET-13 FTP
HET-13 FTP
RWAL----UF
VMVE----UE
UTRN----UE
Running into debris from retaining walls leading to train derailment
Running into maintenance vehicles leading to train derailment
Running into train derailed while in depots/sidings leading to train derailment
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
3.60E-11
1.80E-11
1.80E-11
0.0012
6.21E-04
6.21E-04
2.67E-05
1.33E-05
1.33E-05
0.00%
0.00%
0.00%
E
E
E
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
HET-13 FTP
BBLD----UE
ROHL----UF
WWIN----UE
RQAK----UE
WFLD----UE
RSIG----UF
Running into objects from building site leading to train derailment
Running into debris from OHLE structures leading to train derailment
High winds leading to train derailment
Structural damage due to earthquake leading to train derailment
Running into flooding leading to train derailment
Running into debris from signalling gantries leading to train derailment
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
Frt. tr. mi. on ps. lines
7.20E-12
1.80E-12
1.80E-12
3.60E-13
1.80E-13
1.80E-13
2.49E-04
6.21E-05
6.21E-05
1.24E-05
6.21E-06
6.21E-06
5.34E-06
1.33E-06
1.33E-06
2.76E-07
1.38E-07
1.33E-07
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
E
E
E
E
E
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0510
0.0414
0.0379
2.49E-04
0.0078
0.0207
0.0130
0.0078
0.0078
0.0078
0.0078
Risk cont.
(FWI / year)
0.0011
8.89E-04
8.44E-04
7.92E-04
4.83E-04
4.45E-04
2.79E-04
1.67E-04
1.67E-04
1.67E-04
1.67E-04
Risk cont.
% of total
HE risk
0.20%
0.15%
0.15%
0.14%
0.08%
0.08%
0.05%
0.03%
0.03%
0.03%
0.03%
Deriv. of
prec. (D,
E, N)
D
D
D
E
D
D
D
D
D
D
D
47
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 FTP OTP - Derailment of OTP on passenger lines inside possession
HET-13 FTP OTP OT09I3213P
Infrastructure Defect leading to OTP Derailment on passenger line
HET-13 FTP OTP OT09I1213P
Driver/Operator Error - Inattention leading to OTP Derailment on passenger
line
HET-13 FTP OTP OM01-5423P
Unsafe System of Work Employed by Workers leading to OTP roll over and
subsequent derailment of freight train on passenger line
HET-13 FTP OTP OT09I1413P
Driver/Operator Error - Signal Passed at Danger leading to OTP Derailment
on passenger line
HET-13 FTP OTP OT09I0813P
Defect on OTM leading to OTP Derailment on passenger line
HET-13 FTP OTP OT09I1513P
Driver/Operator Error - Speeding leading to OTP Derailment on passenger
line
HET-13 FTP OTP OM01-1223P
Driver/Operator Error - Inattention leading to OTP roll over and subsequent
derailment of freight train on passenger line
HET-13 FTP OTP OT09I3113P
Incorrect Management of IC Interface leading to OTP Derailment on
passenger line
HET-13 FTP OTP OM01-3223P
Infrastructure Defect leading to OTP roll over and subsequent derailment of
freight train on passenger line
HET-13 FTP OTP OM01-5923P
Defect on OTP leading to OTP roll over and subsequent derailment of freight
train on passenger line
HET-13 FTP OTP OM01-1623P
Failure of Lifting Equipment leading to OTP roll over and subsequent
derailment of freight train on passenger line
HET-13 FTP OTP OT09I4413P
Points Controller Error leading to OTP Derailment on passenger line
HET-13 FTP OTP OT09I5413P
Unsafe System of Work Employed by Workers leading to OTP Derailment on
passenger line
HET-13 FTP OTP OT09I1113P
Driver/Operator Error - Braking leading to OTP Derailment on passenger line
Normaliser
National
frequency
(events/
normaliser)
OTP hrs
OTP hrs
1.14E-05
1.04E-06
National
frequency
(events/ year)
31.82
22.91
2.098
OTP hrs
7.42E-10
0.0015
0.0042
0.72%
D
OTP hrs
8.24E-07
1.662
0.0037
0.63%
D
OTP hrs
OTP hrs
7.81E-07
6.16E-07
1.575
1.243
0.0035
0.0027
0.60%
0.47%
D
D
OTP hrs
3.71E-10
7.48E-04
0.0021
0.36%
D
OTP hrs
3.73E-07
0.7520
0.0017
0.29%
D
OTP hrs
2.78E-10
5.61E-04
0.0016
0.27%
D
OTP hrs
2.60E-10
5.24E-04
0.0015
0.25%
D
OTP hrs
1.85E-10
3.74E-04
0.0010
0.18%
D
OTP hrs
OTP hrs
2.22E-07
2.22E-07
0.4485
0.4485
9.88E-04
9.88E-04
0.17%
0.17%
D
D
OTP hrs
1.65E-07
0.3325
7.33E-04
0.13%
D
Risk cont.
(FWI / year)
0.0814
0.0505
0.0046
Risk cont.
% of total
HE risk
14.01%
8.68%
0.80%
Deriv. of
prec. (D,
E, N)
D
D
HET-13 FTP OTP OT09I5013P
HET-13 FTP OTP OT05I5523P
Signaller Error leading to OTP Derailment on passenger line
Vandalism Leading to Collision between OTP and an Obstruction on/near
Running Line - Inside Possession and subsequent derailment of freight train
on passenger line
OTP hrs
OTP hrs
1.58E-07
5.14E-09
0.3180
0.0104
7.01E-04
5.86E-04
0.12%
0.10%
D
D
HET-13 FTP OTP OT05I3223P
Infrastructure Defect Leading to Collision between OTP and an Obstruction
on/near Running Line - Inside Possession and subsequent derailment of
freight train on passenger line
OTP hrs
1.11E-09
0.0022
1.27E-04
0.02%
D
HET-13 FTP OTP OM01-3123P
Incorrect Management of IC Interface leading to OTP roll over and
subsequent derailment of freight train on passenger line
OTP hrs
1.85E-11
3.74E-05
1.05E-04
0.02%
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
48
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 FTP OTP OT05I3723P
Maintenance Equipment/Tools on/near Running Line Leading to Collision
between OTP and an Obstruction on/near Running Line - Inside Possession
and subsequent derailment of freight train on passenger line
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
5.12E-10
National
frequency
(events/ year)
0.0010
Risk cont.
(FWI / year)
5.84E-05
Risk cont.
% of total
HE risk
0.01%
Deriv. of
prec. (D,
E, N)
D
HET-13 FTP OTP OT09I0913P
HET-13 FTP OTP OT05I2023P
Depot Track Defect leading to OTP Derailment on passenger line
Inadequate Contractor Controls / Management Leading to Collision between
OTP and an Obstruction on/near Running Line - Inside Possession and
subsequent derailment of freight train on passenger line
OTP hrs
OTP hrs
7.19E-09
2.45E-10
0.0145
4.94E-04
3.20E-05
2.79E-05
0.01%
0.00%
D
D
HET-13 FTP OTP OT05I1223P
Driver/Operator Error - Inattention Leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession and subsequent
derailment of freight train on passenger line
OTP hrs
1.48E-10
2.99E-04
1.69E-05
0.00%
D
HET-13 FTP OTP OT05I5923P
Defect on OTP Leading to Collision between OTP and an Obstruction
on/near Running Line - Inside Possession and subsequent derailment of
freight train on passenger line
OTP hrs
7.42E-11
1.50E-04
8.46E-06
0.00%
D
HET-13 FTP OTP OT05I5423P
Unsafe System of Work Employed by Workers Leading to Collision between
OTP and an Obstruction on/near Running Line - Inside Possession and
subsequent derailment of freight train on passenger line
OTP hrs
7.42E-11
1.50E-04
8.46E-06
0.00%
D
HET-13 FTP OTP OT05I1123P
Driver/Operator Error - Braking Leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession and subsequent
derailment of freight train on passenger line
OTP hrs
3.71E-11
7.48E-05
4.23E-06
0.00%
D
HET-13 FTP OTP OT05I1523P
Driver/Operator Error - Speeding Leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession and subsequent
derailment of freight train on passenger line
OTP hrs
3.71E-11
7.48E-05
4.23E-06
0.00%
D
HET-13 FTP OTP OT05I3123P
Incorrect Management of IC Interface Leading to Collision between OTP and
an Obstruction on/near Running Line - Inside Possession and subsequent
derailment of freight train on passenger line
OTP hrs
3.71E-11
7.48E-05
4.23E-06
0.00%
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
49
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 FTF - Derailment of freight trains on freight only lines outside possession
HET-13 FTF
TTWS----NF
Track twist leading to FT derailment on freight only lines
HET-13 FTF
XDSC----NF
Defective S&C leading to FT derailment on freight only lines
HET-13 FTF
FCATDR--NH
Cat D SPAD or runaway leading to FT derailment on freight only lines
HET-13 FTF
FCRW----NH
Other driver/train crew error at S&C leading to FT derailment on freight only
lines
HET-13 FTF
TTUNBKR-NF
Broken rail in tunnel leading to FT derailment on freight only lines
HET-13 FTF
XSGM----NH
Signaller/ crossing keeper error leading to FT derailment on freight only lines
HET-13 FTF
HET-13 FTF
FSHN----NH
XSCM----NF
HET-13 FTF
XMISC---NF
HET-13 FTF
HET-13 FTF
HET-13 FTF
Normaliser
National
frequency
(events/
normaliser)
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
4.18E-07
4.18E-07
3.48E-07
2.09E-07
National
frequency
(events/ year)
7.192
1.000
1.000
0.8333
0.5000
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
5.23E-08
1.39E-07
0.1250
0.3333
0.0057
0.0045
0.98%
0.78%
D
D
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
1.39E-07
1.39E-07
0.3333
0.3333
0.0045
0.0045
0.78%
0.78%
D
D
Risk cont.
(FWI / year)
0.1037
0.0142
0.0136
0.0094
0.0068
Risk cont.
% of total
HE risk
17.85%
2.45%
2.34%
1.61%
1.17%
Deriv. of
prec. (D,
E, N)
D
D
D
D
Frt. tr. mi. on frt. lines
1.39E-07
0.3333
0.0045
0.78%
D
TCYCLIC-NF
TSPG----NF
FSPD----NH
Shunter errors leading to FT derailment on freight only lines
Movement of points under train (equipment faults) leading to FT derailment
on freight only lines
Miscellaneous/unknown causes on S&C leading to FT derailment on freight
only lines
Cyclic top leading to FT derailment on freight only lines
Gauge spread leading to FT derailment on freight only lines
Signal passed at danger at S&C leading to FT derailment on freight only lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
1.31E-07
1.12E-07
8.61E-08
0.3125
0.2686
0.2060
0.0044
0.0038
0.0028
0.76%
0.66%
0.48%
D
D
D
HET-13 FTF
HET-13 FTF
FBUF----NF
XPRD----NH
Buffer locking leading to FT derailment on freight only lines
Track maintenance staff errors leading to FT derailment on freight only lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
7.84E-08
6.97E-08
0.1875
0.1667
0.0027
0.0023
0.46%
0.39%
D
D
HET-13 FTF
HET-13 FTF
TBCK----NF
FWHF----NF
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
6.97E-08
5.23E-08
0.1667
0.1250
0.0023
0.0018
0.39%
0.31%
D
D
HET-13 FTF
HET-13 FTF
HET-13 FTF
FSNT----NF
TMSC----NF
YMSC----NE
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
5.23E-08
5.23E-08
5.23E-08
0.1250
0.1250
0.1250
0.0018
0.0018
0.0018
0.31%
0.31%
0.31%
D
D
D
HET-13 FTF
HET-13 FTF
HET-13 FTF
FMARS---NH
FOSL----NH
FSUS----NF
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
5.23E-08
2.73E-08
2.61E-08
0.1250
0.0654
0.0625
0.0018
0.0014
8.89E-04
0.31%
0.23%
0.15%
D
D
D
HET-13 FTF
FTRA----NF
Buckled rail leading to FT derailment on freight only lines
Wheel flats or wheel/tyre wear beyond limits leading to FT derailment on
freight only lines
Severe braking/Snatch leading to FT derailment on freight only lines
Misc. track faults leading to FT derailment on freight only lines
Miscellaneous/ unknown causes on plain line leading to FT derailment on
freight only lines
Marshalling of train leading to FT derailment on freight only lines
Overspeeding leading to FT derailment on freight only lines
Suspension system/bogie failures leading to FT derailment on freight only
lines
Running into objects fallen from trains leading to FT derailment on freight only
lines
Frt. tr. mi. on frt. lines
2.61E-08
0.0625
8.89E-04
0.15%
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
50
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 FTF
FAXL----NF
Axle failure leading to FT derailment on freight only lines
HET-13 FTF
XFOS----NF
Points in the wrong position and not detected leading to FT derailment on
freight only lines
HET-13 FTF
FVAND---NF
Other vandalism leading to FT derailment on freight only lines
HET-13 FTF
VBND----UE
Running into vehicles through boundary fence leading to train derailment
Normaliser
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
National
frequency
(events/
normaliser)
2.61E-08
2.61E-08
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
2.61E-08
1.20E-09
0.0625
0.0029
8.51E-04
6.91E-04
0.15%
0.12%
D
D
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
RSCR----UE
RBSHCOL-UE
FWHL----NF
XSCO----NH
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
9.00E-11
2.16E-11
4.51E-09
4.51E-09
2.15E-04
5.16E-05
0.0108
0.0108
6.90E-04
1.66E-04
1.54E-04
1.47E-04
0.12%
0.03%
0.03%
0.03%
E
E
D
D
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
VBGV----UE
RLNS----UF
TFSH----NF
FAXB----NF
BVAN----UE
Rail bridge collapse - scour leading to train derailment
Rail bridge collapse - bridge bashing leading to train derailment
Wheel failure leading to FT derailment on freight only lines
Incorrect scotch and clip of points leading to FT derailment on freight only
lines
Running into vehicles fallen from overbridge leading to train derailment
Running into landslip leading to train derailment
Broken fishplate leading to FT derailment on freight only lines
Seized axle box bearing leading to FT derailment on freight only lines
Running into items placed on the track by vandals leading to train derailment
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
2.25E-10
3.60E-09
3.38E-09
3.38E-09
2.70E-09
5.38E-04
0.0086
0.0081
0.0081
0.0065
1.30E-04
1.17E-04
1.15E-04
1.15E-04
8.79E-05
0.02%
0.02%
0.02%
0.02%
0.02%
D
D
D
D
D
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
FUNDER--NF
FCUP----NF
RBGS----UF
TBKR----NF
RSLP----NF
Twisted underframe leading to FT derailment on freight only lines
Coupling failure leading to FT derailment on freight only lines
Rail bridge structural failure leading to train derailment
Broken rail leading to FT derailment on freight only lines
Subsidence/ landslip under track leading to FT derailment on freight only lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
1.69E-09
1.69E-09
7.20E-12
1.69E-09
1.69E-09
0.0040
0.0040
1.72E-05
0.0040
0.0040
5.76E-05
5.76E-05
5.52E-05
5.51E-05
5.51E-05
0.01%
0.01%
0.01%
0.01%
0.01%
D
D
E
D
D
HET-13 FTF
FMSC----NF
Miscellaneous mechanical faults leading to FT derailment on freight only lines
Frt. tr. mi. on frt. lines
1.51E-09
0.0036
5.13E-05
0.01%
D
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
BTRE----UE
FLOAD---NH
RTUNWALLUF
AANM----UE
SWRG----NF
Running into trees leading to train derailment
Uneven loading leading to FT derailment on freight only lines
Running into debris in the tunnel leading to train derailment
Running into large animals leading to train derailment
Wrongside signal failure at S&C leading to FT derailment on freight only lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
1.20E-09
1.10E-09
2.25E-10
6.00E-10
3.77E-10
0.0029
0.0026
5.38E-04
0.0014
9.02E-04
3.91E-05
3.74E-05
2.45E-05
1.95E-05
1.23E-05
0.01%
0.01%
0.00%
0.00%
0.00%
D
D
D
D
D
HET-13 FTF
RBGD----UF
Running into to debris from overbridges leading to train derailment
Frt. tr. mi. on frt. lines
2.25E-10
5.38E-04
7.33E-06
0.00%
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0625
0.0625
Risk cont.
(FWI / year)
8.89E-04
8.51E-04
Risk cont.
% of total
HE risk
0.15%
0.15%
Deriv. of
prec. (D,
E, N)
D
D
51
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 FTF
RBLD----UF
Running into debris from lineside structures/buildings leading to train
derailment
HET-13 FTF
MMAT----UE
Running into Engineers materials left foul leading to train derailment
HET-13 FTF
BBLN----UE
Running into items blown onto the line leading to train derailment
HET-13 FTF
WSNO----UE
Running into snow/ice leading to train derailment
HET-13 FTF
BFLL----UE
Running into items that have fallen onto the line leading to train derailment
Normaliser
Frt. tr. mi. on frt. lines
National
frequency
(events/
normaliser)
2.25E-10
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
2.25E-10
2.25E-10
2.25E-10
2.25E-10
5.38E-04
5.38E-04
5.38E-04
5.38E-04
7.33E-06
7.33E-06
7.33E-06
7.33E-06
0.00%
0.00%
0.00%
0.00%
D
D
D
D
HET-13 FTF
RBSH----UE
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
HET-13 FTF
National
frequency
(events/ year)
5.38E-04
Risk cont.
(FWI / year)
7.33E-06
Risk cont.
% of total
HE risk
0.00%
Deriv. of
prec. (D,
E, N)
D
Frt. tr. mi. on frt. lines
2.16E-10
5.16E-04
7.03E-06
0.00%
E
RDRN----UF
TTKD----UE
Bridge bashing leading to bridge displacement (not collapse) and train
derailment
Drainage culvert/pipework collapse leading to train derailment
Track damage from other undetected derailment leading to train derailment
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
1.80E-10
7.20E-11
4.30E-04
1.72E-04
5.86E-06
2.45E-06
0.00%
0.00%
E
E
RWAL----UF
VMVE----UE
UTRN----UE
Running into debris from retaining walls leading to train derailment
Running into maintenance vehicles leading to train derailment
Running into train derailed while in depots/sidings leading to train derailment
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
3.60E-11
1.80E-11
1.80E-11
8.61E-05
4.30E-05
4.30E-05
1.17E-06
5.86E-07
5.86E-07
0.00%
0.00%
0.00%
E
E
E
HET-13 FTF
BBLD----UE
Running into objects from building site leading to train derailment
HET-13 FTF
ROHL----UF
Running into debris from OHLE structures leading to train derailment
HET-13 FTF
WWIN----UE
High winds leading to train derailment
HET-13 FTF
RQAK----UE
Structural damage due to earthquake leading to train derailment
HET-13 FTF
WFLD----UE
Running into flooding leading to train derailment
HET-13 FTF
RSIG----UF
Running into debris from signalling gantries leading to train derailment
HET-13 FTF OTP - Derailment of OTP on freight only lines inside possession
HET-13 FTF OTP OT09I3213F
Infrastructure Defect leading to OTP Derailment on freight only line
HET-13 FTF OTP OT09I1213F
Driver/Operator Error - Inattention leading to OTP Derailment on freight only
line
HET-13 FTF OTP OM01-5423F
Unsafe System of Work Employed by Workers leading to OTP roll over and
subsequent derailment of freight train on freight only line
HET-13 FTF OTP OT09I1413F
Driver/Operator Error - Signal Passed at Danger leading to OTP Derailment
on freight only line
HET-13 FTF OTP OT09I0813F
Defect on OTM leading to OTP Derailment on freight only line
HET-13 FTF OTP OT09I1513F
Driver/Operator Error - Speeding leading to OTP Derailment on freight only
line
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
Frt. tr. mi. on frt. lines
7.20E-12
1.80E-12
1.80E-12
3.60E-13
1.80E-13
1.80E-13
7.86E-07
7.20E-08
2.34E-07
5.86E-08
5.86E-08
1.22E-08
6.12E-09
5.86E-09
0.0056
0.0035
3.20E-04
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.97%
0.60%
0.06%
E
E
E
E
E
E
OTP hrs
OTP hrs
1.72E-05
4.30E-06
4.30E-06
8.61E-07
4.30E-07
4.30E-07
2.203
1.586
0.1453
D
D
OTP hrs
5.14E-11
1.04E-04
2.91E-04
0.05%
D
OTP hrs
5.71E-08
0.1151
2.54E-04
0.04%
D
OTP hrs
OTP hrs
5.41E-08
4.27E-08
0.1091
0.0861
2.40E-04
1.90E-04
0.04%
0.03%
D
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
52
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 FTF OTP OM01-1223F
Driver/Operator Error - Inattention leading to OTP roll over and subsequent
derailment of freight train on freight only line
HET-13 FTF OTP OT09I3113F
Incorrect Management of IC Interface leading to OTP Derailment on freight
only line
HET-13 FTF OTP OM01-3223F
Infrastructure Defect leading to OTP roll over and subsequent derailment of
freight train on freight only line
HET-13 FTF OTP OM01-5923F
Defect on OTP leading to OTP roll over and subsequent derailment of freight
train on freight only line
HET-13 FTF OTP OM01-1623F
Failure of Lifting Equipment leading to OTP roll over and subsequent
derailment of freight train on freight only line
HET-13 FTF OTP OT09I4413F
Points Controller Error leading to OTP Derailment on freight only line
HET-13 FTF OTP OT09I5413F
Unsafe System of Work Employed by Workers leading to OTP Derailment on
freight only line
HET-13 FTF OTP OT09I1113F
Driver/Operator Error - Braking leading to OTP Derailment on freight only line
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
2.57E-11
National
frequency
(events/ year)
5.18E-05
Risk cont.
(FWI / year)
1.45E-04
Risk cont.
% of total
HE risk
0.03%
Deriv. of
prec. (D,
E, N)
D
OTP hrs
2.58E-08
0.0521
1.15E-04
0.02%
D
OTP hrs
1.93E-11
3.89E-05
1.09E-04
0.02%
D
OTP hrs
1.80E-11
3.63E-05
1.02E-04
0.02%
D
OTP hrs
1.28E-11
2.59E-05
7.27E-05
0.01%
D
OTP hrs
OTP hrs
1.54E-08
1.54E-08
0.0311
0.0311
6.84E-05
6.84E-05
0.01%
0.01%
D
D
OTP hrs
1.14E-08
0.0230
5.07E-05
0.01%
D
HET-13 FTF OTP OT09I5013F
HET-13 FTF OTP OT05I5523F
Signaller Error leading to OTP Derailment on freight only line
Vandalism Leading to Collision between OTP and an Obstruction on/near
Running Line - Inside Possession and subsequent derailment of freight train
on freight only line
OTP hrs
OTP hrs
1.09E-08
3.56E-10
0.0220
7.18E-04
4.85E-05
4.06E-05
0.01%
0.01%
D
D
HET-13 FTF OTP OT05I3223F
Infrastructure Defect Leading to Collision between OTP and an Obstruction
on/near Running Line - Inside Possession and subsequent derailment of
freight train on freight only line
OTP hrs
7.71E-11
1.55E-04
8.79E-06
0.00%
D
HET-13 FTF OTP OM01-3123F
Incorrect Management of IC Interface leading to OTP roll over and
subsequent derailment of freight train on freight only line
Maintenance Equipment/Tools on/near Running Line Leading to Collision
between OTP and an Obstruction on/near Running Line - Inside Possession
and subsequent derailment of freight train on freight only line
OTP hrs
1.28E-12
2.59E-06
7.27E-06
0.00%
D
OTP hrs
3.55E-11
7.15E-05
4.04E-06
0.00%
D
Depot Track Defect leading to OTP Derailment on freight only line
Inadequate Contractor Controls / Management Leading to Collision between
OTP and an Obstruction on/near Running Line - Inside Possession and
subsequent derailment of freight train on freight only line
OTP hrs
OTP hrs
4.98E-10
1.70E-11
0.0010
3.42E-05
2.21E-06
1.93E-06
0.00%
0.00%
D
D
HET-13 FTF OTP OT05I3723F
HET-13 FTF OTP OT09I0913F
HET-13 FTF OTP OT05I2023F
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
53
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 FTF OTP OT05I1223F
Driver/Operator Error - Inattention Leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession and subsequent
derailment of freight train on freight only line
Normaliser
OTP hrs
National
frequency
(events/
normaliser)
1.03E-11
National
frequency
(events/ year)
2.07E-05
Risk cont.
(FWI / year)
1.17E-06
Risk cont.
% of total
HE risk
0.00%
Deriv. of
prec. (D,
E, N)
D
HET-13 FTF OTP OT05I5923F
Defect on OTP Leading to Collision between OTP and an Obstruction
on/near Running Line - Inside Possession and subsequent derailment of
freight train on freight only line
OTP hrs
5.14E-12
1.04E-05
5.86E-07
0.00%
D
HET-13 FTF OTP OT05I5423F
Unsafe System of Work Employed by Workers Leading to Collision between
OTP and an Obstruction on/near Running Line - Inside Possession and
subsequent derailment of freight train on freight only line
OTP hrs
5.14E-12
1.04E-05
5.86E-07
0.00%
D
HET-13 FTF OTP OT05I1123F
Driver/Operator Error - Braking Leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession and subsequent
derailment of freight train on freight only line
OTP hrs
2.57E-12
5.18E-06
2.93E-07
0.00%
D
HET-13 FTF OTP OT05I1523F
Driver/Operator Error - Speeding Leading to Collision between OTP and an
Obstruction on/near Running Line - Inside Possession and subsequent
derailment of freight train on freight only line
OTP hrs
2.57E-12
5.18E-06
2.93E-07
0.00%
D
HET-13 FTF OTP OT05I3123F
Incorrect Management of IC Interface Leading to Collision between OTP and
an Obstruction on/near Running Line - Inside Possession and subsequent
derailment of freight train on freight only line
OTP hrs
2.57E-12
5.18E-06
2.93E-07
0.00%
D
HET-13 EP - Derailment of ECS&Parcels trains on passenger lines
HET-13 EP
TSPG----CF
Gauge spread leading to ECS or PCLS derailment
HET-13 EP
XSGM----CH
Signaller/ crossing keeper error leading to ECS or PCLS derailment
HET-13 EP
FCATDR--CH
Cat D SPAD or runaway leading to ECS or PCLS derailment
HET-13 EP
VBND----UE
Running into vehicles through boundary fence leading to train derailment
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
2.17E-08
2.17E-08
2.17E-08
1.31E-09
2.400
0.3333
0.3333
0.3333
0.0202
0.0560
0.0064
0.0062
0.0058
0.0047
9.63%
1.11%
1.06%
0.99%
0.81%
D
D
D
D
HET-13 EP
HET-13 EP
HET-13 EP
HET-13 EP
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
9.83E-11
1.08E-08
1.08E-08
8.13E-09
0.0015
0.1667
0.1667
0.1250
0.0044
0.0032
0.0031
0.0024
0.76%
0.55%
0.53%
0.41%
E
D
D
D
RSCR----UE
FWHL----CF
FSHN----CH
FTRA----CF
Version 5.5/May 2008
Rail bridge collapse - scour leading to train derailment
Wheel failure leading to ECS or PCLS derailment
Shunter errors leading to ECS or PCLS derailment
Running into objects fallen from trains leading to ECS or PCLS derailment
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
54
Table B
Normaliser
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
TTWS----CF
FMARS---CH
XMISC---CF
Cause precursor description
Defective S&C leading to ECS or PCLS derailment
Signal passed at danger at S&C leading to ECS or PCLS derailment
Wheel flats or wheel/tyre wear beyond limits leading to ECS or PCLS
derailment
Track twist leading to ECS or PCLS derailment
Marshalling of train leading to ECS or PCLS derailment
Miscellaneous/unknown causes on S&C leading to ECS or PCLS derailment
National
frequency
(events/
normaliser)
8.13E-09
7.81E-09
4.06E-09
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
4.06E-09
4.06E-09
4.06E-09
0.0625
0.0625
0.0625
0.0012
0.0012
0.0012
0.21%
0.21%
0.20%
D
D
D
HET-13 EP
HET-13 EP
HET-13 EP
HET-13 EP
RLNS----UF
RBSHCOL-UE
VBGV----UE
BVAN----UE
Running into landslip leading to train derailment
Rail bridge collapse - bridge bashing leading to train derailment
Running into vehicles fallen from overbridge leading to train derailment
Running into items placed on the track by vandals leading to train derailment
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
3.93E-09
2.36E-11
2.46E-10
2.95E-09
0.0605
3.63E-04
0.0038
0.0454
0.0011
0.0011
8.78E-04
8.41E-04
0.19%
0.18%
0.15%
0.14%
D
E
D
D
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
FVAND---CF
FOSL----CH
FMSC----CF
BTRE----UE
TMSC----CF
RBGS----UF
TBKR----CF
TBCK----CF
RTUNWALLUF
AANM----UE
TFSH----CF
XPRD----CH
RSLP----CF
FCRW----CH
Other vandalism leading to ECS or PCLS derailment
Overspeeding leading to ECS or PCLS derailment
Miscellaneous mechanical faults leading to ECS or PCLS derailment
Running into trees leading to train derailment
Misc. track faults leading to ECS or PCLS derailment
Rail bridge structural failure leading to train derailment
Broken rail leading to ECS or PCLS derailment
Buckled rail leading to ECS or PCLS derailment
Running into debris in the tunnel leading to train derailment
Running into large animals leading to train derailment
Broken fishplate leading to ECS or PCLS derailment
Track maintenance staff errors leading to ECS or PCLS derailment
Subsidence/ landslip under track leading to ECS or PCLS derailment
Other driver/train crew error at S&C leading to ECS or PCLS derailment
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
2.66E-09
2.13E-09
1.65E-09
1.31E-09
1.24E-09
7.87E-12
1.24E-09
1.24E-09
2.46E-10
6.56E-10
6.18E-10
6.18E-10
6.18E-10
6.18E-10
0.0409
0.0327
0.0253
0.0202
0.0190
1.21E-04
0.0190
0.0190
0.0038
0.0101
0.0095
0.0095
0.0095
0.0095
7.59E-04
7.26E-04
4.89E-04
3.74E-04
3.67E-04
3.53E-04
3.53E-04
3.53E-04
2.17E-04
1.87E-04
1.83E-04
1.76E-04
1.76E-04
1.76E-04
0.13%
0.12%
0.08%
0.06%
0.06%
0.06%
0.06%
0.06%
0.04%
0.03%
0.03%
0.03%
0.03%
0.03%
D
D
D
D
D
E
D
D
D
D
D
D
D
D
HET-13 EP
HET-13 EP
FAXB----CF
YMSC----CE
ECS & parcels trn mls
ECS & parcels trn mls
4.64E-10
4.64E-10
0.0071
0.0071
1.37E-04
1.37E-04
0.02%
0.02%
D
D
HET-13 EP
XSCO----CH
Seized axle box bearing leading to ECS or PCLS derailment
Miscellaneous/ unknown causes on plain line leading to ECS or PCLS
derailment
Incorrect scotch and clip of points leading to ECS or PCLS derailment
ECS & parcels trn mls
4.64E-10
0.0071
1.32E-04
0.02%
D
Hazardous Event
Number
HET-13 EP
HET-13 EP
HET-13 EP
Precursor code
XDSC----CF
FSPD----CH
FWHF----CF
HET-13 EP
HET-13 EP
HET-13 EP
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.1250
0.1201
0.0625
Risk cont.
(FWI / year)
0.0023
0.0022
0.0012
Risk cont.
% of total
HE risk
0.40%
0.38%
0.21%
Deriv. of
prec. (D,
E, N)
D
D
D
55
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 EP
XFOS----CF
Points in the wrong position and not detected leading to ECS or PCLS
derailment
HET-13 EP
SWRG----CF
Wrongside signal failure at S&C leading to ECS or PCLS derailment
HET-13 EP
TTUNBKR-CF
Broken rail in tunnel leading to ECS or PCLS derailment
HET-13 EP
MMAT----UE
Running into Engineers materials left foul leading to train derailment
HET-13 EP
BBLN----UE
Running into items blown onto the line leading to train derailment
HET-13 EP
WSNO----UE
Running into snow/ice leading to train derailment
HET-13 EP
BFLL----UE
Running into items that have fallen onto the line leading to train derailment
Normaliser
ECS & parcels trn mls
National
frequency
(events/
normaliser)
4.64E-10
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
4.12E-10
1.19E-10
2.46E-10
2.46E-10
2.46E-10
2.46E-10
0.0063
0.0018
0.0038
0.0038
0.0038
0.0038
1.17E-04
1.05E-04
7.01E-05
7.01E-05
7.01E-05
7.01E-05
0.02%
0.02%
0.01%
0.01%
0.01%
0.01%
D
E
D
D
D
D
HET-13 EP
HET-13 EP
RBGD----UF
RBLD----UF
ECS & parcels trn mls
ECS & parcels trn mls
2.46E-10
2.46E-10
0.0038
0.0038
7.01E-05
7.01E-05
0.01%
0.01%
E
D
HET-13 EP
HET-13 EP
HET-13 EP
HET-13 EP
FSUS----CF
FBUF----CF
FAXL----CF
RBSH----UE
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
2.32E-10
2.32E-10
2.32E-10
2.36E-10
0.0036
0.0036
0.0036
0.0036
6.87E-05
6.87E-05
6.87E-05
6.72E-05
0.01%
0.01%
0.01%
0.01%
D
D
D
E
HET-13 EP
XSCM----CF
HET-13 EP
HET-13 EP
HET-13 EP
National
frequency
(events/ year)
0.0071
Risk cont.
(FWI / year)
1.32E-04
Risk cont.
% of total
HE risk
0.02%
Deriv. of
prec. (D,
E, N)
D
ECS & parcels trn mls
2.32E-10
0.0036
6.61E-05
0.01%
D
FSNT----CF
RDRN----UF
TTKD----UE
Running into to debris from overbridges leading to train derailment
Running into debris from lineside structures/buildings leading to train
derailment
Suspension system/bogie failures leading to ECS or PCLS derailment
Buffer locking leading to ECS or PCLS derailment
Axle failure leading to ECS or PCLS derailment
Bridge bashing leading to bridge displacement (not collapse) and train
derailment
Movement of points under train (equipment faults) leading to ECS or PCLS
derailment
Severe braking/Snatch leading to ECS or PCLS derailment
Drainage culvert/pipework collapse leading to train derailment
Track damage from other undetected derailment leading to train derailment
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
1.97E-10
1.97E-10
7.87E-11
0.0030
0.0030
0.0012
5.83E-05
5.61E-05
2.33E-05
0.01%
0.01%
0.00%
E
E
E
HET-13 EP
HET-13 EP
HET-13 EP
HET-13 EP
FCUP----CF
RWAL----UF
VMVE----UE
UTRN----UE
Coupling failure leading to ECS or PCLS derailment
Running into debris from retaining walls leading to train derailment
Running into maintenance vehicles leading to train derailment
Running into train derailed while in depots/sidings leading to train derailment
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
3.93E-11
3.93E-11
1.97E-11
1.97E-11
6.05E-04
6.05E-04
3.02E-04
3.02E-04
1.17E-05
1.12E-05
5.61E-06
5.61E-06
0.00%
0.00%
0.00%
0.00%
E
E
E
E
HET-13 EP
HET-13 EP
HET-13 EP
HET-13 EP
HET-13 EP
BBLD----UE
ROHL----UF
WWIN----UE
RQAK----UE
WFLD----UE
Running into objects from building site leading to train derailment
Running into debris from OHLE structures leading to train derailment
High winds leading to train derailment
Structural damage due to earthquake leading to train derailment
Running into flooding leading to train derailment
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
ECS & parcels trn mls
7.87E-12
1.97E-12
1.97E-12
3.93E-13
1.97E-13
1.21E-04
3.02E-05
3.02E-05
6.05E-06
3.02E-06
2.24E-06
5.61E-07
5.61E-07
1.17E-07
5.83E-08
0.00%
0.00%
0.00%
0.00%
0.00%
E
E
E
E
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
56
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-13 EP
RSIG----UF
Running into debris from signalling gantries leading to train derailment
HET-17 - Fire on passenger train (in station)
HET-17i - Fire on passenger train interior at station
HET-17i
PFIREIAVEH
PT EMU: fires inside PT due to arson/vandalism fires
HET-17i
PFIREIAVDH
PT DMU: fires inside PT due to arson/vandalism fires
HET-17i
PFIREIBCLF
PT ELOCO: fires inside PT buffet car fires
HET-17i
PFIREIHVEF
PT EMU: fires inside PT due to H&V equipment fault
HET-17i
PFIREIBCHF
PT HST/DEMU: fires inside PT buffet car fires
HET-17i
PFIREIHEEH
PT EMU: fires inside PT due to human error /carelessness (includes crew and
passenger)
HET-17i
PFIREICFEF
PT EMU: fires inside PT. Cab fires
HET-17i
PFIREIAVHH
PT HST/DEMU: fires inside PT due to arson/vandalism fires
HET-17i
PFIREIELEF
PT EMU: fires inside PT due to electrical equipment
HET-17i
PFIREIHVDF
PT DMU: fires inside PT due to H&V equipment faults
HET-17i
PFIREIDCEH
PT EMU: fires inside PT due to discarded cigarettes
HET-17i
PFIREIBCEF
PT EMU: fires inside PT buffet car fires
HET-17i
PFIREIDCLH
PT ELOCO: fires inside PT due to discarded cigarettes
HET-17i
PFIREIDCHH
PT HST/DEMU: fires inside PT due to discarded cigarettes
HET-17i
PFIREIDCDH
PT DMU: fires inside PT due to discarded cigarettes
HET-17i
PFIREIAVLH
PT ELOCO: fires inside PT due to arson/vandalism fires
HET-17i
PFIREIELHF
PT HST/DEMU: fires inside PT due to electrical equipment
HET-17i
PFIREICFDF
PT DMU: fires inside PT. Cab fires
HET-17i
PFIREIOTDF
PT DMU: fire inside due to other causes
HET-17i
PFIREIDCIH
PT DLOCO: fires inside PT due to discarded cigarettes
HET-17i
PFIREIHVLF
PT ELOCO: fires inside PT due to H&V equipment faults
HET-17i
PFIREIOTEF
PT EMU: fires inside due to other causes
HET-17i
PFIREIHVIF
PT DLOCO: fires inside PT due to H&V equipment faults
HET-17i
PFIREIAVIH
PT DLOCO: fires inside PT due to arson/vandalism fires
HET-17i
PFIREIHEDH
PT DMU: fires inside PT due to human error /carelessness (includes crew
and passenger)
HET-17i
PFIREIHVHF
PT HST/DEMU: fires inside PT due to H&V equipment faults
HET-17i
PFIREICFIF
PT DLOCO: fires inside PT. Cab fires
Version 5.5/May 2008
National
frequency
(events/
normaliser)
1.97E-13
National
frequency
(events/ year)
3.02E-06
Risk cont.
(FWI / year)
5.61E-08
Risk cont.
% of total
HE risk
0.00%
Deriv. of
prec. (D,
E, N)
E
Pass. EMU trn mls
Pass. DMU trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. HST trn mls
Pass. EMU trn mls
2.36E-08
2.91E-09
1.53E-08
9.59E-10
5.45E-09
6.64E-10
12.88
4.643
3.014
0.3673
0.1695
0.1224
0.0848
0.0848
0.0423
0.0016
0.0010
1.25E-04
5.76E-05
4.16E-05
2.88E-05
2.88E-05
100.00%
3.74%
2.43%
0.30%
0.14%
0.10%
0.07%
0.07%
D
D
D
D
D
D
Pass. EMU trn mls
Pass. HST trn mls
Pass. EMU trn mls
Pass. DMU trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. HST trn mls
Pass. DMU trn mls
Pass. el. loco. trn mls
Pass. HST trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. dsl. loco. trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. DMU trn mls
6.64E-10
4.85E-09
5.90E-10
5.22E-10
5.17E-10
4.43E-10
4.24E-09
2.42E-09
2.99E-10
2.55E-09
1.21E-09
1.49E-10
1.49E-10
2.22E-08
1.31E-09
1.14E-10
2.06E-08
2.06E-08
7.66E-11
0.0848
0.0753
0.0753
0.0659
0.0659
0.0565
0.0471
0.0377
0.0377
0.0283
0.0188
0.0188
0.0188
0.0145
0.0145
0.0145
0.0135
0.0135
0.0097
2.88E-05
2.56E-05
2.56E-05
2.24E-05
2.24E-05
1.92E-05
1.60E-05
1.28E-05
1.28E-05
9.61E-06
6.40E-06
6.40E-06
6.40E-06
4.93E-06
4.93E-06
4.93E-06
4.57E-06
4.57E-06
3.28E-06
0.07%
0.06%
0.06%
0.05%
0.05%
0.05%
0.04%
0.03%
0.03%
0.02%
0.02%
0.02%
0.02%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Pass. HST trn mls
Pass. dsl. loco. trn mls
6.21E-10
1.44E-08
0.0097
0.0094
3.28E-06
3.20E-06
0.01%
0.01%
D
D
Normaliser
ECS & parcels trn mls
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
57
Table B
Hazardous Event
Number
HET-17i
HET-17i
HET-17i
HET-17i
Precursor code
PFIREIELLF
PFIREIOTLF
PFIREICFLF
PFIREIHEHF
HET-17i
HET-17i
HET-17i
HET-17i
HET-17i
PFIREIELDF
PFIREICFHF
PFIREIBCIF
PFIREIOTHF
PFIREIHELH
HET-17i
HET-17i
HET-17i
PFIREIELIF
PFIREIMELF
PFIREIPLLF
HET-17i
PFIREIAMLH
HET-17i
HET-17i
PFIREIMEEF
PFIREIPLEF
HET-17i
PFIREIAMEH
HET-17i
PFIREITPEF
HET-17i
HET-17i
PFIREIMEIF
PFIREIHEIH
HET-17i
PFIREIPLIF
HET-17i
PFIREIAMIH
HET-17i
HET-17i
PFIREIOTIF
PFIREIMEDF
Version 5.5/May 2008
Cause precursor description
PT ELOCO: fires inside PT due to electrical equipment
PT ELOCO: fire inside due to other causes
PT ELOCO: fires inside PT. Cab fires
PT HST/DEMU: fires inside PT due to human error /carelessness (includes
crew and passenger)
PT DMU: fires inside PT due to electrical equipment
PT HST/DEMU: fires inside PT. Cab fires
PT DLOCO: fires inside PT buffet car fires
PT HST/DEMU: fires inside due to other causes
PT ELOCO: fires inside PT due to human error /carelessness (includes crew
and passenger)
PT DLOCO: fires inside PT due to electrical equipment
PT ELOCO: fires inside PT due to mechanical equipment
PT ELOCO: fires inside PT due to passengers luggage (flammable liquids,
lighters etc)
PT ELOCO: fires inside PT due to unauthorised use of 13 amp sockets on
train
PT EMU: fires inside PT due to mechanical equipment
PT EMU: fires inside PT due to passengers luggage (flammable liquids,
lighters etc)
PT EMU: fires inside PT due to unauthorised use of 13 amp sockets on train
PT EMU: fires inside PT due to traction power transformers (where located
inside passenger carrying vehicle)
PT DLOCO: fires inside PT due to mechanical equipment
PT DLOCO: fires inside PT due to human error /carelessness (includes crew
and passenger)
PT DLOCO: fires inside PT due to passengers luggage (flammable liquids,
lighters etc)
PT DLOCO: fires inside PT due to unauthorised use of 13 amp sockets on
train
PT DLOCO: fires inside due to other causes
PT DMU: fires inside PT due to mechanical equipment
Normaliser
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. HST trn mls
National
frequency
(events/
normaliser)
8.49E-10
8.49E-10
8.49E-10
6.06E-10
National
frequency
(events/ year)
0.0094
0.0094
0.0094
0.0094
Risk cont.
(FWI / year)
3.20E-06
3.20E-06
3.20E-06
3.20E-06
Risk cont.
% of total
HE risk
0.01%
0.01%
0.01%
0.01%
Deriv. of
prec. (D,
E, N)
D
D
D
D
Pass. DMU trn mls
Pass. HST trn mls
Pass. dsl. loco. trn mls
Pass. HST trn mls
Pass. el. loco. trn mls
7.46E-11
4.33E-10
1.03E-08
3.11E-10
4.35E-10
0.0094
0.0067
0.0067
0.0048
0.0048
3.20E-06
2.29E-06
2.29E-06
1.64E-06
1.64E-06
0.01%
0.01%
0.01%
0.00%
0.00%
D
D
D
D
D
Pass. dsl. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
0
0
0
0
0
0
0
0
0
0%
0%
0%
N
N
N
Pass. el. loco. trn mls
0
0
0
0%
N
Pass. EMU trn mls
Pass. EMU trn mls
0
0
0
0
0
0
0%
0%
N
N
Pass. EMU trn mls
0
0
0
0%
N
Pass. EMU trn mls
0
0
0
0%
N
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
0
0
0
0
0
0
0%
0%
N
N
Pass. dsl. loco. trn mls
0
0
0
0%
N
Pass. dsl. loco. trn mls
0
0
0
0%
N
Pass. dsl. loco. trn mls
Pass. DMU trn mls
0
0
0
0
0
0
0%
0%
N
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
58
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-17i
PFIREIPLDF
PT DMU: fires inside PT due to passengers luggage (flammable liquids,
lighters etc)
HET-17i
PFIREIBCDF
PT DMU: fires inside PT buffet car fires
HET-17i
PFIREIAMDH
PT DMU: fires inside PT due to unauthorized use of 13 amp sockets on train
Normaliser
Pass. DMU trn mls
National
frequency
(events/
normaliser)
0
Pass. DMU trn mls
Pass. DMU trn mls
0
0
0
0
0
0
0%
0%
N
N
HET-17i
HET-17i
Pass. HST trn mls
Pass. HST trn mls
0
0
0
0
0
0
0%
0%
N
N
Pass. HST trn mls
0
0
0
0%
N
Pass. EMU trn mls
0
1.06E-08
2.37E-09
2.37E-09
2.37E-09
1.76E-08
8.19E-09
1.97E-09
1.97E-09
1.97E-09
1.12E-08
8.00E-09
7.89E-10
2.73E-09
4.80E-09
1.14E-07
2.14E-09
2.14E-09
1.95E-09
8.16E-08
1.56E-09
7.62E-08
0
0.0407
0.0100
0.0022
0.0022
0.0022
0.0020
0.0019
0.0018
0.0018
0.0018
0.0013
9.24E-04
7.39E-04
6.48E-04
5.54E-04
5.54E-04
5.09E-04
5.09E-04
4.63E-04
3.96E-04
3.70E-04
3.69E-04
0%
96.26%
23.61%
5.25%
5.25%
5.25%
4.81%
4.60%
4.37%
4.37%
4.37%
3.06%
2.19%
1.75%
1.53%
1.31%
1.31%
1.20%
1.20%
1.09%
0.94%
0.88%
0.87%
N
Pass. DMU trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. HST trn mls
Pass. EMU trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. DMU trn mls
Pass. EMU trn mls
Pass. HST trn mls
Pass. dsl. loco. trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. dsl. loco. trn mls
Pass. EMU trn mls
Pass. dsl. loco. trn mls
0
8.236
1.343
0.2985
0.2985
0.2985
0.2736
1.045
0.2488
0.2488
0.2488
0.1741
0.1244
0.0995
0.3483
0.0746
0.0746
0.2736
0.2736
0.2488
0.0533
0.1990
0.0498
PFIREIMEHF
PFIREIPLHF
PT HST/DEMU: fires inside PT due to mechanical equipment
PT HST/DEMU: fires inside PT due to passengers luggage (flammable
liquids, lighters etc)
HET-17i
PFIREIAMHH
PT HST/DEMU: fires inside PT due to unauthorised use of 13 amp sockets
on train
HET-17i
PFIREIEREF
PT EMU: Eurostar engine room fire inside
HET-17o - Fire on passenger train exterior at station
HET-17o
PFIREOENDF
PT DMU: engine fires
HET-17o
PFIREOOLDF
PT DMU: oil/diesel leak fires
HET-17o
PFIREOOTDF
PT DMU: fires outside due to other causes (excluding underframe)
HET-17o
PFIREOOUDF
PT DMU: underframe fire outside due to other causes
HET-17o
PFIREOESHF
PT HST/DEMU: exhaust systems fires
HET-17o
PFIREOCCEF
PT EMU: current collection fires
HET-17o
PFIREOESDF
PT DMU: exhaust systems fires
HET-17o
PFIREOBDDF
PT DMU: dragging brake fires
HET-17o
PFIREOEUDF
PT DMU: electric equipment fires outside (underframe)
HET-17o
PFIREOPCHF
PT HST/DEMU: power car fires
HET-17o
PFIREOENHF
PT HST/DEMU: engine fires
HET-17o
PFIREOMEDF
PT DMU: mechanical equipment fires
HET-17o
PFIREORBEF
PT EMU: resistance bank fires
HET-17o
PFIREOOLHF
PT HST/DEMU: oil/diesel leak fires
HET-17o
PFIREOBDIF
PT DLOCO: dragging brake fires
HET-17o
PFIREOSGEF
PT EMU: switch gear fires
HET-17o
PFIREOEUEF
PT EMU: electric equipment fires (underframe)
HET-17o
PFIREOTMEF
PT EMU: traction motors fires
HET-17o
PFIREOENIF
PT DLOCO: engine fires
HET-17o
PFIREOAXEF
PT EMU: hot/failed axle box fires
HET-17o
PFIREOTMIF
PT DLOCO: traction motors fires
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0
Risk cont.
(FWI / year)
0
Risk cont.
% of total
HE risk
0%
Deriv. of
prec. (D,
E, N)
N
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
59
Table B
Hazardous Event
Number
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
Precursor code
PFIREOAXDF
PFIREOBSDF
PFIREOBSIF
PFIREOVADH
PFIREOELHF
PFIREOBDHF
PFIREOBDLF
PFIREOVAEH
PFIREOBDEF
PFIREORBHF
PFIREOTMHF
PFIREOEXIF
PFIREOEUIF
PFIREOLOIF
PFIREOCEDF
PFIREOCEHF
PFIREOOTHF
Cause precursor description
PT DMU: hot/failed axle box fires
PT DMU: brake sparking fires
PT DLOCO: brake sparking fires
PT DMU: fires due to vandalism
PT HST/DEMU: electrical equipment fires (excluding underframe)
PT HST/DEMU: dragging brake fires
PT ELOCO: dragging brake fires
PT EMU: fires outside PT due to vandalism
PT EMU: dragging brake fires
PT HST/DEMU: resistance bank fires
PT HST/DEMU: traction motors fires
PT DLOCO: exhaust systems fires
PT DLOCO: electrical equipment fires (underframe)
PT DLOCO: locomotive fire
PT DMU: control equipment fires
PT HST/DEMU: control equipment fires
PT HST/DEMU: fires outside due to other causes (excluding underframe)
Normaliser
Pass. DMU trn mls
Pass. DMU trn mls
Pass. dsl. loco. trn mls
Pass. DMU trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. DMU trn mls
Pass. HST trn mls
Pass. HST trn mls
National
frequency
(events/
normaliser)
3.94E-10
3.94E-10
7.62E-08
3.94E-10
3.20E-09
3.20E-09
1.57E-08
1.36E-09
1.36E-09
1.64E-09
1.60E-09
3.81E-08
3.81E-08
3.81E-08
1.97E-10
1.60E-09
1.60E-09
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
PFIREOVAIH
PFIREOEUHF
PFIREOOUHF
PFIREOELLF
PFIREOELEF
PFIREOOLIF
PFIREOELIF
PFIREOOULF
PFIREOBSHF
PFIREOVAHH
PFIREOBADF
PFIREOOUEF
PFIREOOTEF
PFIREOTMLF
PFIREOMEEF
PT DLOCO: fires due to vandalism
PT HST/DEMU: electrical equipment fires (underframe)
PT HST/DEMU: underframe fire outside due to other causes
PT ELOCO: electrical equipment fires (excluding underframe)
PT EMU: electrical equipment fires (excluding underframe)
PT DLOCO: oil/diesel leak fires
PT DLOCO: electrical equipment fires (excluding underframe)
PT ELOCO: underframe fire outside due to other causes
PT HST/DEMU: brake sparking fires
PT HST/DEMU: fires due to vandalism
PT DMU: battery box fires
PT EMU: underframe fire outside due to other causes
PT EMU: fires outside due to other causes (excluding underframe)
PT ELOCO: traction motors fires
PT EMU: mechanical equipment fires
Pass. dsl. loco. trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. el. loco. trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. DMU trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
3.81E-08
1.60E-09
1.60E-09
8.00E-09
5.85E-10
2.72E-08
2.72E-08
4.60E-09
8.21E-10
8.21E-10
1.01E-10
3.90E-10
3.90E-10
4.48E-09
3.90E-10
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0498
0.0498
0.0498
0.0498
0.0498
0.0498
0.1741
0.1741
0.1741
0.0255
0.0249
0.0249
0.0249
0.0249
0.0249
0.0249
0.0249
Risk cont.
(FWI / year)
3.69E-04
3.69E-04
3.69E-04
3.69E-04
3.69E-04
3.69E-04
3.24E-04
3.24E-04
3.24E-04
1.89E-04
1.85E-04
1.85E-04
1.85E-04
1.85E-04
1.85E-04
1.85E-04
1.85E-04
Risk cont.
% of total
HE risk
0.87%
0.87%
0.87%
0.87%
0.87%
0.87%
0.77%
0.77%
0.77%
0.45%
0.44%
0.44%
0.44%
0.44%
0.44%
0.44%
0.44%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
0.0249
0.0249
0.0249
0.0888
0.0746
0.0178
0.0178
0.0510
0.0128
0.0128
0.0128
0.0498
0.0498
0.0498
0.0498
1.85E-04
1.85E-04
1.85E-04
1.65E-04
1.39E-04
1.32E-04
1.32E-04
9.49E-05
9.47E-05
9.47E-05
9.47E-05
9.25E-05
9.25E-05
9.25E-05
9.25E-05
0.44%
0.44%
0.44%
0.39%
0.33%
0.31%
0.31%
0.22%
0.22%
0.22%
0.22%
0.22%
0.22%
0.22%
0.22%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
60
Table B
Hazardous Event
Number
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
HET-17o
Precursor code
PFIREOAXLF
PFIREOTRLF
PFIREOEULF
PFIREOTCEF
PFIREOCEEF
PFIREOTREF
PFIREOBSLF
PFIREOCHLF
PFIREOCCLF
PFIREOBSEF
PFIREOBAEF
PFIREOOLEF
PFIREOVALH
PFIREOOTLF
PFIREOMELF
PFIREOCELF
PFIREOSGLF
PFIREOBALF
PFIREORBLF
PFIREOCHEF
PFIREOAXIF
PFIREOMEIF
PFIREOOTIF
PFIREOBAIF
PFIREORBIF
PFIREOSGIF
PFIREOCEIF
PFIREOOUIF
PFIREOELDF
PFIREOAXHF
PFIREOMEHF
PFIREOBAHF
PFIREOSGHF
Version 5.5/May 2008
Cause precursor description
PT ELOCO: hot/failed axle box fires
PT ELOCO: transformer fires
PT ELOCO: electrical equipment fires (underframe)
PT EMU: traction current return problems
PT EMU: control equipment fires
PT EMU: transformer fires
PT ELOCO: brake sparking fires
PT ELOCO: choke fires
PT ELOCO: current collection fires
PT EMU: brake sparking fires
PT EMU: battery box fires
PT EMU: oil/diesel leak fires
PT ELOCO: fires due to vandalism
PT ELOCO: fires outside due to other causes (excluding underframe)
PT ELOCO: mechanical equipment fires
PT ELOCO: control equipment fires
PT ELOCO: switch gear fires
PT ELOCO: battery box fires
PT ELOCO: resistance bank fires
PT EMU: choke fires
PT DLOCO: hot/failed axle box fires
PT DLOCO: mechanical equipment fires
PT DLOCO: fires outside due to other causes (excluding underframe)
PT DLOCO: battery fires
PT DLOCO: resistance bank fires
PT DLOCO: switchgear fires
PT DLOCO: control equipment fires
PT DLOCO: underframe fire outside due to other causes
PT DMU: electrical equipment fires (excluding underframe)
PT HST/DEMU: hot/failed axle box fires
PT HST/DEMU: mechanical equipment fires
PT HST/DEMU: battery fires
PT HST/DEMU: switchgear fires
Normaliser
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. DMU trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. HST trn mls
National
frequency
(events/
normaliser)
4.48E-09
4.48E-09
3.20E-09
1.95E-10
1.95E-10
1.95E-10
2.24E-09
1.60E-09
1.60E-09
1.39E-10
1.39E-10
1.00E-10
1.15E-09
1.15E-09
1.15E-09
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0498
0.0498
0.0355
0.0249
0.0249
0.0249
0.0249
0.0178
0.0178
0.0178
0.0178
0.0128
0.0128
0.0128
0.0128
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Risk cont.
(FWI / year)
9.25E-05
9.25E-05
6.61E-05
4.63E-05
4.63E-05
4.63E-05
4.63E-05
3.30E-05
3.30E-05
3.30E-05
3.30E-05
2.37E-05
2.37E-05
2.37E-05
2.37E-05
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Risk cont.
% of total
HE risk
0.22%
0.22%
0.16%
0.11%
0.11%
0.11%
0.11%
0.08%
0.08%
0.08%
0.08%
0.06%
0.06%
0.06%
0.06%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
61
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-17o
PFIREOTRHF
PT HST/DEMU: transformer fires
HET-17o
PFIREOOLLF
PT ELOCO: oil/diesel leak fires
Normaliser
Pass. HST trn mls
Pass. el. loco. trn mls
HET-18 - Fire on passenger train (not in station)
HET-18i - Fire on passenger train interior not at station
HET-18i
PFIREIAVEH
PT EMU: fires inside PT due to arson/vandalism fires
Pass. EMU trn mls
HET-18i
PFIREIAVDH
PT DMU: fires inside PT due to arson/vandalism fires
Pass. DMU trn mls
HET-18i
PFIREIBCLF
PT ELOCO: fires inside PT buffet car fires
Pass. el. loco. trn mls
HET-18i
PFIREIHVEF
PT EMU: fires inside PT due to H&V equipment fault
Pass. EMU trn mls
HET-18i
PFIREIHEEH
PT EMU: fires inside PT due to human error /carelessness (includes crew and
Pass. EMU trn mls
passenger)
HET-18i
PFIREIBCHF
PT HST/DEMU: fires inside PT buffet car fires
Pass. HST trn mls
HET-18i
PFIREICFEF
PT EMU: fires inside PT. Cab fires
Pass. EMU trn mls
HET-18i
PFIREIAVHH
PT HST/DEMU: fires inside PT due to arson/vandalism fires
Pass. HST trn mls
HET-18i
PFIREIELEF
PT EMU: fires inside PT due to electrical equipment
Pass. EMU trn mls
HET-18i
PFIREIHVDF
PT DMU: fires inside PT due to H&V equipment faults
Pass. DMU trn mls
HET-18i
PFIREIDCEH
PT EMU: fires inside PT due to discarded cigarettes
Pass. EMU trn mls
HET-18i
PFIREIBCEF
PT EMU: fires inside PT buffet car fires
Pass. EMU trn mls
HET-18i
PFIREIDCLH
PT ELOCO: fires inside PT due to discarded cigarettes
Pass. el. loco. trn mls
HET-18i
PFIREIDCHH
PT HST/DEMU: fires inside PT due to discarded cigarettes
Pass. HST trn mls
HET-18i
PFIREIDCDH
PT DMU: fires inside PT due to discarded cigarettes
Pass. DMU trn mls
HET-18i
PFIREIAVLH
PT ELOCO: fires inside PT due to arson/vandalism fires
Pass. el. loco. trn mls
HET-18i
PFIREIELHF
PT HST/DEMU: fires inside PT due to electrical equipment
Pass. HST trn mls
HET-18i
PFIREICFDF
PT DMU: fires inside PT. Cab fires
Pass. DMU trn mls
HET-18i
PFIREIOTDF
PT DMU: fire inside due to other causes
Pass. DMU trn mls
HET-18i
PFIREIDCIH
PT DLOCO: fires inside PT due to discarded cigarettes
Pass. dsl. loco. trn mls
HET-18i
PFIREIHVLF
PT ELOCO: fires inside PT due to H&V equipment faults
Pass. el. loco. trn mls
HET-18i
PFIREIOTEF
PT EMU: fires inside due to other causes
Pass. EMU trn mls
HET-18i
PFIREIHVIF
PT DLOCO: fires inside PT due to H&V equipment faults
Pass. dsl. loco. trn mls
HET-18i
PFIREIAVIH
PT DLOCO: fires inside PT due to arson/vandalism fires
Pass. dsl. loco. trn mls
HET-18i
PFIREIHVHF
PT HST/DEMU: fires inside PT due to H&V equipment faults
Pass. HST trn mls
HET-18i
PFIREIHEDH
PT DMU: fires inside PT due to human error /carelessness (includes crew
Pass. DMU trn mls
and passenger)
Version 5.5/May 2008
National
frequency
(events/
normaliser)
0
0
National
frequency
(events/ year)
0
0
Risk cont.
(FWI / year)
0
0
Risk cont.
% of total
HE risk
0%
0%
Deriv. of
prec. (D,
E, N)
N
N
4.78E-07
5.89E-08
3.09E-07
1.94E-08
1.34E-08
151.9
93.95
60.99
7.433
3.430
2.478
1.715
0.0552
0.0234
0.0152
0.0019
8.54E-04
6.17E-04
4.27E-04
100.00%
42.41%
27.53%
3.36%
1.55%
1.12%
0.77%
D
D
D
D
D
1.10E-07
1.34E-08
9.81E-08
1.19E-08
1.06E-08
1.05E-08
8.96E-09
8.59E-08
4.90E-08
6.04E-09
5.15E-08
2.45E-08
3.02E-09
3.02E-09
4.49E-07
2.64E-08
2.30E-09
4.17E-07
4.17E-07
1.26E-08
1.55E-09
1.715
1.715
1.525
1.525
1.334
1.334
1.143
0.9529
0.7623
0.7623
0.5717
0.3812
0.3812
0.3812
0.2932
0.2932
0.2932
0.2723
0.2723
0.1955
0.1955
4.27E-04
4.27E-04
3.80E-04
3.80E-04
3.32E-04
3.32E-04
2.85E-04
2.37E-04
1.90E-04
1.90E-04
1.42E-04
9.49E-05
9.49E-05
9.49E-05
7.30E-05
7.30E-05
7.30E-05
6.78E-05
6.78E-05
4.87E-05
4.87E-05
0.77%
0.77%
0.69%
0.69%
0.60%
0.60%
0.52%
0.43%
0.34%
0.34%
0.26%
0.17%
0.17%
0.17%
0.13%
0.13%
0.13%
0.12%
0.12%
0.09%
0.09%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
62
Table B
Hazardous Event
Number
HET-18i
HET-18i
HET-18i
HET-18i
HET-18i
Precursor code
PFIREICFIF
PFIREIELLF
PFIREIOTLF
PFIREICFLF
PFIREIHEHF
HET-18i
HET-18i
HET-18i
HET-18i
HET-18i
PFIREIELDF
PFIREICFHF
PFIREIBCIF
PFIREIOTHF
PFIREIHELH
HET-18i
HET-18i
HET-18i
PFIREIELIF
PFIREIMELF
PFIREIPLLF
HET-18i
PFIREIAMLH
HET-18i
HET-18i
PFIREIMEEF
PFIREIPLEF
HET-18i
PFIREIAMEH
HET-18i
PFIREITPEF
HET-18i
HET-18i
PFIREIMEIF
PFIREIHEIH
HET-18i
PFIREIPLIF
HET-18i
PFIREIAMIH
Version 5.5/May 2008
Cause precursor description
PT DLOCO: fires inside PT. Cab fires
PT ELOCO: fires inside PT due to electrical equipment
PT ELOCO: fire inside due to other causes
PT ELOCO: fires inside PT. Cab fires
PT HST/DEMU: fires inside PT due to human error /carelessness (includes
crew and passenger)
PT DMU: fires inside PT due to electrical equipment
PT HST/DEMU: fires inside PT. Cab fires
PT DLOCO: fires inside PT buffet car fires
PT HST/DEMU: fires inside due to other causes
PT ELOCO: fires inside PT due to human error /carelessness (includes crew
and passenger)
PT DLOCO: fires inside PT due to electrical equipment
PT ELOCO: fires inside PT due to mechanical equipment
PT ELOCO: fires inside PT due to passengers luggage (flammable liquids,
lighters etc)
PT ELOCO: fires inside PT due to unauthorised use of 13 amp sockets on
train
PT EMU: fires inside PT due to mechanical equipment
PT EMU: fires inside PT due to passengers luggage (flammable liquids,
lighters etc)
PT EMU: fires inside PT due to unauthorised use of 13 amp sockets on train
PT EMU: fires inside PT due to traction power transformers (where located
inside passenger carrying vehicle)
PT DLOCO: fires inside PT due to mechanical equipment
PT DLOCO: fires inside PT due to human error /carelessness (includes crew
and passenger)
PT DLOCO: fires inside PT due to passengers luggage (flammable liquids,
lighters etc)
PT DLOCO: fires inside PT due to unauthorised use of 13 amp sockets on
train
Normaliser
Pass. dsl. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. HST trn mls
National
frequency
(events/
normaliser)
2.92E-07
1.72E-08
1.72E-08
1.72E-08
1.23E-08
National
frequency
(events/ year)
0.1906
0.1906
0.1906
0.1906
0.1906
Risk cont.
(FWI / year)
4.75E-05
4.75E-05
4.75E-05
4.75E-05
4.75E-05
Risk cont.
% of total
HE risk
0.09%
0.09%
0.09%
0.09%
0.09%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
Pass. DMU trn mls
Pass. HST trn mls
Pass. dsl. loco. trn mls
Pass. HST trn mls
Pass. el. loco. trn mls
1.51E-09
8.76E-09
2.08E-07
6.29E-09
8.81E-09
0.1906
0.1361
0.1361
0.0977
0.0977
4.75E-05
3.39E-05
3.39E-05
2.43E-05
2.43E-05
0.09%
0.06%
0.06%
0.04%
0.04%
D
D
D
D
D
Pass. dsl. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
0
0
0
0
0
0
0
0
0
0%
0%
0%
N
N
N
Pass. el. loco. trn mls
0
0
0
0%
N
Pass. EMU trn mls
Pass. EMU trn mls
0
0
0
0
0
0
0%
0%
N
N
Pass. EMU trn mls
0
0
0
0%
N
Pass. EMU trn mls
0
0
0
0%
N
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
0
0
0
0
0
0
0%
0%
N
N
Pass. dsl. loco. trn mls
0
0
0
0%
N
Pass. dsl. loco. trn mls
0
0
0
0%
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
63
Table B
Hazardous Event
Number
HET-18i
HET-18i
HET-18i
Precursor code
PFIREIOTIF
PFIREIMEDF
PFIREIPLDF
HET-18i
HET-18i
PFIREIBCDF
PFIREIAMDH
HET-18i
HET-18i
PFIREIMEHF
PFIREIPLHF
Cause precursor description
PT DLOCO: fires inside due to other causes
PT DMU: fires inside PT due to mechanical equipment
PT DMU: fires inside PT due to passengers luggage (flammable liquids,
lighters etc)
PT DMU: fires inside PT buffet car fires
PT DMU: fires inside PT due to unauthorized use of 13 amp sockets on train
PT HST/DEMU: fires inside PT due to mechanical equipment
PT HST/DEMU: fires inside PT due to passengers luggage (flammable
liquids, lighters etc)
HET-18i
PFIREIAMHH
PT HST/DEMU: fires inside PT due to unauthorised use of 13 amp sockets
on train
HET-18i
PFIREIEREF
PT EMU: Eurostar engine room fire inside
HET-18o - Fire on passenger train exterior not at station
HET-18o
PFIREOENDF
PT DMU: engine fires
HET-18o
PFIREOCCEF
PT EMU: current collection fires
HET-18o
PFIREOOLDF
PT DMU: oil/diesel leak fires
HET-18o
PFIREOOTDF
PT DMU: fires outside due to other causes (excluding underframe)
HET-18o
PFIREOOUDF
PT DMU: underframe fire outside due to other causes
HET-18o
PFIREOESHF
PT HST/DEMU: exhaust systems fires
HET-18o
PFIREOESDF
PT DMU: exhaust systems fires
HET-18o
PFIREOBDDF
PT DMU: dragging brake fires
HET-18o
PFIREOEUDF
PT DMU: electric equipment fires outside (underframe)
HET-18o
PFIREOPCHF
PT HST/DEMU: power car fires
HET-18o
PFIREORBEF
PT EMU: resistance bank fires
HET-18o
PFIREOSGEF
PT EMU: switch gear fires
HET-18o
PFIREOEUEF
PT EMU: electric equipment fires (underframe)
HET-18o
PFIREOENHF
PT HST/DEMU: engine fires
HET-18o
PFIREOTMEF
PT EMU: traction motors fires
HET-18o
PFIREOMEDF
PT DMU: mechanical equipment fires
HET-18o
PFIREOAXEF
PT EMU: hot/failed axle box fires
HET-18o
PFIREOBDLF
PT ELOCO: dragging brake fires
Version 5.5/May 2008
Normaliser
Pass. dsl. loco. trn mls
Pass. DMU trn mls
Pass. DMU trn mls
National
frequency
(events/
normaliser)
0
0
0
National
frequency
(events/ year)
0
0
0
Risk cont.
(FWI / year)
0
0
0
Risk cont.
% of total
HE risk
0%
0%
0%
Deriv. of
prec. (D,
E, N)
N
N
N
Pass. DMU trn mls
Pass. DMU trn mls
0
0
0
0
0
0
0%
0%
N
N
Pass. HST trn mls
Pass. HST trn mls
0
0
0
0
0
0
0%
0%
N
N
Pass. HST trn mls
0
0
0
0%
N
Pass. EMU trn mls
0
7.50E-08
5.76E-08
1.67E-08
1.67E-08
1.67E-08
1.24E-07
1.39E-08
1.39E-08
1.39E-08
7.89E-08
1.92E-08
1.51E-08
1.51E-08
5.63E-08
1.37E-08
5.55E-09
1.10E-08
1.10E-07
0
0.0318
0.0068
0.0024
0.0015
0.0015
0.0015
0.0014
0.0013
0.0013
0.0013
8.88E-04
8.08E-04
6.35E-04
6.35E-04
6.34E-04
5.77E-04
5.07E-04
4.62E-04
4.04E-04
0%
57.59%
12.42%
4.39%
2.76%
2.76%
2.76%
2.53%
2.30%
2.30%
2.30%
1.61%
1.46%
1.15%
1.15%
1.15%
1.05%
0.92%
0.84%
0.73%
N
Pass. DMU trn mls
Pass. EMU trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. HST trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. HST trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. HST trn mls
Pass. EMU trn mls
Pass. DMU trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
0
57.98
9.457
7.355
2.101
2.101
2.101
1.926
1.751
1.751
1.751
1.226
2.452
1.926
1.926
0.8756
1.751
0.7005
1.401
1.226
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
64
Table B
Hazardous Event
Number
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
Precursor code
PFIREOVAEH
PFIREOBDEF
PFIREOOLHF
PFIREOBDIF
PFIREOENIF
PFIREOELHF
PFIREOBDHF
PFIREOTMIF
PFIREOAXDF
PFIREOBSDF
PFIREOBSIF
PFIREOVADH
PFIREOELLF
PFIREOELEF
PFIREORBHF
PFIREOTMHF
PFIREOCEHF
PFIREOOTHF
Cause precursor description
PT EMU: fires outside PT due to vandalism
PT EMU: dragging brake fires
PT HST/DEMU: oil/diesel leak fires
PT DLOCO: dragging brake fires
PT DLOCO: engine fires
PT HST/DEMU: electrical equipment fires (excluding underframe)
PT HST/DEMU: dragging brake fires
PT DLOCO: traction motors fires
PT DMU: hot/failed axle box fires
PT DMU: brake sparking fires
PT DLOCO: brake sparking fires
PT DMU: fires due to vandalism
PT ELOCO: electrical equipment fires (excluding underframe)
PT EMU: electrical equipment fires (excluding underframe)
PT HST/DEMU: resistance bank fires
PT HST/DEMU: traction motors fires
PT HST/DEMU: control equipment fires
PT HST/DEMU: fires outside due to other causes (excluding underframe)
Normaliser
Pass. EMU trn mls
Pass. EMU trn mls
Pass. HST trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. dsl. loco. trn mls
Pass. DMU trn mls
Pass. DMU trn mls
Pass. dsl. loco. trn mls
Pass. DMU trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. HST trn mls
National
frequency
(events/
normaliser)
9.61E-09
9.61E-09
3.38E-08
8.04E-07
5.74E-07
2.25E-08
2.25E-08
5.36E-07
2.78E-09
2.78E-09
5.36E-07
2.78E-09
5.64E-08
4.12E-09
1.16E-08
1.13E-08
1.13E-08
1.13E-08
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
PFIREOEUHF
PFIREOOUHF
PFIREOEXIF
PFIREOEUIF
PFIREOLOIF
PFIREOCEDF
PFIREOVAIH
PFIREOOULF
PFIREOOUEF
PFIREOOTEF
PFIREOTMLF
PFIREOMEEF
PFIREOAXLF
PFIREOTRLF
PT HST/DEMU: electrical equipment fires (underframe)
PT HST/DEMU: underframe fire outside due to other causes
PT DLOCO: exhaust systems fires
PT DLOCO: electrical equipment fires (underframe)
PT DLOCO: locomotive fire
PT DMU: control equipment fires
PT DLOCO: fires due to vandalism
PT ELOCO: underframe fire outside due to other causes
PT EMU: underframe fire outside due to other causes
PT EMU: fires outside due to other causes (excluding underframe)
PT ELOCO: traction motors fires
PT EMU: mechanical equipment fires
PT ELOCO: hot/failed axle box fires
PT ELOCO: transformer fires
Pass. HST trn mls
Pass. HST trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. DMU trn mls
Pass. dsl. loco. trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
1.13E-08
1.13E-08
2.68E-07
2.68E-07
2.68E-07
1.39E-09
2.68E-07
3.24E-08
2.74E-09
2.74E-09
3.16E-08
2.74E-09
3.16E-08
3.16E-08
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
1.226
1.226
0.5254
0.5254
0.3753
0.3502
0.3502
0.3502
0.3502
0.3502
0.3502
0.3502
0.6254
0.5254
0.1796
0.1751
0.1751
0.1751
Risk cont.
(FWI / year)
4.04E-04
4.04E-04
3.80E-04
3.80E-04
2.72E-04
2.54E-04
2.54E-04
2.54E-04
2.54E-04
2.54E-04
2.54E-04
2.54E-04
2.06E-04
1.73E-04
1.30E-04
1.27E-04
1.27E-04
1.27E-04
Risk cont.
% of total
HE risk
0.73%
0.73%
0.69%
0.69%
0.49%
0.46%
0.46%
0.46%
0.46%
0.46%
0.46%
0.46%
0.37%
0.31%
0.24%
0.23%
0.23%
0.23%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
0.1751
0.1751
0.1751
0.1751
0.1751
0.1751
0.1751
0.3592
0.3502
0.3502
0.3502
0.3502
0.3502
0.3502
1.27E-04
1.27E-04
1.27E-04
1.27E-04
1.27E-04
1.27E-04
1.27E-04
1.18E-04
1.15E-04
1.15E-04
1.15E-04
1.15E-04
1.15E-04
1.15E-04
0.23%
0.23%
0.23%
0.23%
0.23%
0.23%
0.23%
0.21%
0.21%
0.21%
0.21%
0.21%
0.21%
0.21%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
65
Table B
Hazardous Event
Number
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
Precursor code
PFIREOOLIF
PFIREOELIF
PFIREOEULF
PFIREOBSHF
PFIREOVAHH
PFIREOBADF
PFIREOTCEF
PFIREOCEEF
PFIREOTREF
PFIREOBSLF
PFIREOBSEF
PFIREOBAEF
PFIREOCHLF
PFIREOCCLF
PFIREOVALH
PFIREOOTLF
PFIREOOLEF
PFIREOMELF
PFIREOCELF
PFIREOSGLF
PFIREOBALF
PFIREORBLF
PFIREOCHEF
PFIREOAXIF
PFIREOMEIF
PFIREOOTIF
PFIREOBAIF
PFIREORBIF
PFIREOSGIF
PFIREOCEIF
PFIREOOUIF
PFIREOELDF
PFIREOAXHF
Version 5.5/May 2008
Cause precursor description
PT DLOCO: oil/diesel leak fires
PT DLOCO: electrical equipment fires (excluding underframe)
PT ELOCO: electrical equipment fires (underframe)
PT HST/DEMU: brake sparking fires
PT HST/DEMU: fires due to vandalism
PT DMU: battery box fires
PT EMU: traction current return problems
PT EMU: control equipment fires
PT EMU: transformer fires
PT ELOCO: brake sparking fires
PT EMU: brake sparking fires
PT EMU: battery box fires
PT ELOCO: choke fires
PT ELOCO: current collection fires
PT ELOCO: fires due to vandalism
PT ELOCO: fires outside due to other causes (excluding underframe)
PT EMU: oil/diesel leak fires
PT ELOCO: mechanical equipment fires
PT ELOCO: control equipment fires
PT ELOCO: switch gear fires
PT ELOCO: battery box fires
PT ELOCO: resistance bank fires
PT EMU: choke fires
PT DLOCO: hot/failed axle box fires
PT DLOCO: mechanical equipment fires
PT DLOCO: fires outside due to other causes (excluding underframe)
PT DLOCO: battery fires
PT DLOCO: resistance bank fires
PT DLOCO: switchgear fires
PT DLOCO: control equipment fires
PT DLOCO: underframe fire outside due to other causes
PT DMU: electrical equipment fires (excluding underframe)
PT HST/DEMU: hot/failed axle box fires
Normaliser
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. el. loco. trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. DMU trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. el. loco. trn mls
Pass. EMU trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. dsl. loco. trn mls
Pass. DMU trn mls
Pass. HST trn mls
National
frequency
(events/
normaliser)
1.91E-07
1.91E-07
2.25E-08
5.78E-09
5.78E-09
7.12E-10
1.37E-09
1.37E-09
1.37E-09
1.58E-08
9.80E-10
9.80E-10
1.13E-08
1.13E-08
8.09E-09
8.09E-09
7.04E-10
8.09E-09
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.1251
0.1251
0.2502
0.0898
0.0898
0.0898
0.1751
0.1751
0.1751
0.1751
0.1251
0.1251
0.1251
0.1251
0.0898
0.0898
0.0898
0.0898
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Risk cont.
(FWI / year)
9.06E-05
9.06E-05
8.24E-05
6.50E-05
6.50E-05
6.50E-05
5.77E-05
5.77E-05
5.77E-05
5.77E-05
4.12E-05
4.12E-05
4.12E-05
4.12E-05
2.96E-05
2.96E-05
2.96E-05
2.96E-05
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Risk cont.
% of total
HE risk
0.16%
0.16%
0.15%
0.12%
0.12%
0.12%
0.10%
0.10%
0.10%
0.10%
0.07%
0.07%
0.07%
0.07%
0.05%
0.05%
0.05%
0.05%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
66
Table B
Hazardous Event
Number
HET-18o
HET-18o
HET-18o
HET-18o
HET-18o
Precursor code
PFIREOMEHF
PFIREOBAHF
PFIREOSGHF
PFIREOTRHF
PFIREOOLLF
Cause precursor description
PT HST/DEMU: mechanical equipment fires
PT HST/DEMU: battery fires
PT HST/DEMU: switchgear fires
PT HST/DEMU: transformer fires
PT ELOCO: oil/diesel leak fires
HET-20 - Fire on non-passenger train
HET-20A - Fire on non-passenger train outside possession
HET-20A
PFWGCAR-E
Fire on FT wagon - cargo
HET-20A
PFWGHAB-E
Fire on FT wagon - axle/bearing failure
HET-20A
PFWGDRB-E
Fire on FT wagon - dragging brakes
HET-20A
PFWGHE--E
Fire on FT wagon - human error/carelessness
HET-20A
PFWGVAN-E
Fire on FT wagon - vandalism/arson
HET-20A
PFWGSPA-E
Fire on FT wagon - brake sparking
HET-20A
PFLCDENG-E
Fire on FT diesel loco - engine
HET-20A
PFLCDEX--E
Fire on FT diesel loco - exhaust system
HET-20A
PFDCSDMUEE Fire on DMU ECS - engine
HET-20A
PFLCDE---E
Fire on FT diesel loco - electrical
HET-20A
PFLCELTM-E
Fire on FT electric loco - traction motor
HET-20A
PFECSBE-E
Fire on berthed EMU - electrical
HET-20A
PFLCDLEDBE
Fire on LE diesel loco - dragging brakes
HET-20A
PFECSCC-E
Fire on EMU ECS - current collection
HET-20A
PFECSAB-E
Fire on EMU ECS - axle/bearing failure
HET-20A
PFDCSHSTXE Fire on HST/DEMU ECS - exhaust system
HET-20A
PFRRN----E
Fire on road-rail vehicle/track machine - cause not established
HET-20A
PFLCDLEEXE
Fire on LE diesel loco - exhaust system
HET-20A
PFECSG--E
Fire on EMU ECS - resistance bank
HET-20A
PFECSE--E
Fire on EMU ECS - electrical
HET-20A
PFECSBV-E
Fire on berthed EMU - arson/vandalism
HET-20A
PFDCSDMUFE Fire on DMU ECS - electrical
HET-20A
PFDCSDO-E
Fire on diesel engineer's stock - other
HET-20A
PFDCSHSTEE Fire on HST/DEMU ECS - engine
HET-20A
PFLCDLEE-E
Fire on LE diesel loco - engine
Version 5.5/May 2008
Normaliser
Pass. HST trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. HST trn mls
Pass. el. loco. trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
ECS trn mls
Frt & parcels trn mls
Frt & parcels trn mls
ECS trn mls
Frt & parcels trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
National
frequency
(events/
normaliser)
0
0
0
0
0
National
frequency
(events/ year)
0
0
0
0
0
Risk cont.
(FWI / year)
0
0
0
0
0
Risk cont.
% of total
HE risk
0%
0%
0%
0%
0%
Deriv. of
prec. (D,
E, N)
N
N
N
N
N
3.77E-08
2.15E-08
1.08E-08
1.08E-08
5.39E-09
5.39E-09
8.08E-08
3.77E-08
1.54E-07
2.15E-08
2.15E-08
5.27E-08
1.08E-08
3.95E-08
3.95E-08
3.95E-08
3.95E-08
2.82E-08
2.82E-08
2.63E-08
2.63E-08
2.63E-08
2.63E-08
2.63E-08
2.63E-08
28.09
27.46
1.400
0.8000
0.4000
0.4000
0.2000
0.2000
3.000
1.400
2.333
0.8000
0.8000
0.8000
0.4000
0.6000
0.6000
0.6000
0.6000
0.4286
0.4286
0.4000
0.4000
0.4000
0.4000
0.4000
0.4000
0.0528
0.0509
0.0200
0.0114
0.0057
0.0057
0.0029
0.0029
4.19E-04
1.96E-04
1.79E-04
1.12E-04
1.12E-04
6.12E-05
5.59E-05
4.59E-05
4.59E-05
4.59E-05
4.59E-05
3.28E-05
3.28E-05
3.06E-05
3.06E-05
3.06E-05
3.06E-05
3.06E-05
3.06E-05
100.00%
96.27%
37.79%
21.59%
10.80%
10.80%
5.40%
5.40%
0.79%
0.37%
0.34%
0.21%
0.21%
0.12%
0.11%
0.09%
0.09%
0.09%
0.09%
0.06%
0.06%
0.06%
0.06%
0.06%
0.06%
0.06%
0.06%
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
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
67
Table B
Hazardous Event
Number
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-20A
HET-20A
HET-20A
HET-20A
HET-20A
HET-20A
Precursor code
PFRRENG--E
PFECSDB-E
PFLCDBB--E
PFLCDFFP-E
PFLCDDRB-E
PFLCDHE--E
PFLCELETME
PFLCDUC--E
PFECSDRB-E
PFDLBE---E
PFLCDABF-E
PFLCDBRS-E
PFLCELTR-E
PFLCEDRB-E
PFLCDEEL-E
PFLCDLEBSE
PFDCSDEN-E
PFECSL--E
PFDCSDOL-E
PFECSN--E
PFDCSDMUDE
PFLCDERF-E
PFDCSBARE
PFDCSBHVE
PFDCSDMUOE
PFDCSHSTCE
PFECSBBAE
PFECSBC-E
PFECSEF--E
PFLCELCC-E
PFLCELE-E
PFECSBOCE
PFDCSEF--E
Version 5.5/May 2008
Cause precursor description
Fire on road-rail vehicle/track machine - engine
Fire on EMU ECS - dragging brakes
Fire on FT diesel loco - battery box
Fire on FT diesel loco - diesel/oil leak
Fire on FT diesel loco - dragging brakes
Fire on FT diesel loco - human error/carelessness
Fire on LE electric loco - traction motor
Fire on FT diesel loco - underframe
Fire on electric stock ECS - dragging brakes
Fire on berthed diesel loco - engine
Fire on FT diesel loco - axle/bearing failure
Fire on FT diesel loco - brake sparking
Fire on FT electric loco - transformer
Fire on FT electric loco - dragging brakes
Fire on ECS diesel loco - electrical
Fire on LE diesel loco - brake sparking
Fire on diesel engineer's stock - engine
Fire on EMU ECS - switch gear
Fire on diesel engineer's stock - oil leak
Fire on EMU ECS - cause not established
Fire on DMU ECS - diesel/oil leak
Fire on ECS diesel loco - engine
Fire on berthed DMU - arson/vandalism
Fire on berthed DMU - H&V equipment fault
Fire on DMU ECS - outside due to other causes
Fire on HST/DEMU ECS - buffet cars
Fire on berthed EMU - battery box
Fire on berthed EMU - current collection
Fire on electric stock ECS - electrical
Fire on FT electric loco - current collection
Fire on FT electric loco - electrical
Fire on berthed EMU - other outside causes
Fire on diesel hauled stock ECS - electrical
Normaliser
ECS trn mls
ECS trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
ECS trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
Frt & parcels trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
Frt & parcels trn mls
Frt & parcels trn mls
ECS trn mls
ECS trn mls
National
frequency
(events/
normaliser)
2.63E-08
2.63E-08
5.39E-09
5.39E-09
5.39E-09
5.39E-09
5.39E-09
5.39E-09
1.88E-08
3.98E-09
3.85E-09
3.85E-09
3.85E-09
3.85E-09
1.35E-08
1.35E-08
1.35E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
1.32E-08
2.76E-09
2.76E-09
9.74E-09
9.41E-09
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.4000
0.4000
0.2000
0.2000
0.2000
0.2000
0.2000
0.2000
0.2857
0.1479
0.1429
0.1429
0.1429
0.1429
0.2051
0.2051
0.2051
0.2000
0.2000
0.2000
0.2000
0.2000
0.2000
0.2000
0.2000
0.2000
0.2000
0.2000
0.2000
0.1026
0.1026
0.1479
0.1429
Risk cont.
(FWI / year)
3.06E-05
3.06E-05
2.79E-05
2.79E-05
2.79E-05
2.79E-05
2.79E-05
2.79E-05
2.19E-05
2.07E-05
2.00E-05
2.00E-05
2.00E-05
2.00E-05
1.57E-05
1.57E-05
1.57E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.53E-05
1.43E-05
1.43E-05
1.13E-05
1.09E-05
Risk cont.
% of total
HE risk
0.06%
0.06%
0.05%
0.05%
0.05%
0.05%
0.05%
0.05%
0.04%
0.04%
0.04%
0.04%
0.04%
0.04%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.03%
0.02%
0.02%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
E
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
D
68
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-20A
PFDCSBENE
Fire on berthed DMU - engine
HET-20A
PFDCSBS-E
Fire on diesel engineer's stock - brakes sparking
HET-20A
PFDCSHSTFE Fire on HST/DEMU ECS - electrical
HET-20A
PFDCSDBD-E
Fire on diesel engineer's stock - brakes dragging
HET-20A
PFDCSDEL-E
Fire on diesel engineer's stock - electrical
HET-20A
PFDCSDES-E
Fire on diesel engineer's stock - exhaust system
HET-20A
PFDCSHSTOE Fire on HST/DEMU ECS - outside due to other causes
HET-20A
PFECSOUCE
Fire on EMU ECS - other underframe cause
HET-20A
PFECSTM-E
Fire on EMU ECS - traction motor
HET-20A
PFLCELEL-E
Fire on ECS electric loco - electrical
HET-20A
PFRRAB---E
Fire on road-rail vehicle/track machine - axle/bearing failure
HET-20A
PFDCSDMUAE Fire on DMU ECS - axle/bearing failure
HET-20A
PFDCSDMUHE Fire on DMU ECS - H&V equipment fault
HET-20A
PFDCSHSTBE Fire on HST/DEMU ECS - dragging brakes
HET-20A
PFLCDEXH-E
Fire on ECS diesel loco - exhaust systems
HET-20A
PFLCDLEOLE
Fire on LE diesel loco - diesel / oil leak
HET-20A
PFRRHE---E
Fire on road-rail vehicle/track machine - human error/carelessness
HET-20A
PFECSC--E
Fire on EMU ECS - cabs
HET-20A
PFECSHV--E
Fire on electric stock ECS - H&V equipment fault
HET-20A
PFDCSDMUVE Fire on DMU ECS - vandalism
HET-20 OTP - Fire on OTP inside possession
HET-20 OTP
OT08I59
Defect on OTP leading to Fire on OTP - Inside Possession
HET-20 OTP
OT08I54
Vandalism leading to Fire on OTP - Inside Possession
HET-20 OTP
OT08I55
Unsafe system of work employed by workers leading to Fire on OTP - Inside
Possession
HET-21 - Train crushed by structural collapse or large object (not at station)
HET-21A - Train crushed by structural collapse or large object outside possession (not at station)
HET-21A
RSTRUCT---F
Significant NRMI structural collapse (bridge, tunnel, building, retaining wall)
Version 5.5/May 2008
Normaliser
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
ECS trn mls
National
frequency
(events/
normaliser)
9.41E-09
9.41E-09
9.41E-09
9.41E-09
9.41E-09
9.41E-09
9.41E-09
9.41E-09
9.41E-09
9.41E-09
6.76E-09
6.76E-09
6.76E-09
6.76E-09
6.76E-09
6.76E-09
6.76E-09
6.76E-09
6.76E-09
0
OTP hrs
OTP hrs
OTP hrs
3.08E-07
4.10E-09
3.15E-09
National
frequency
(events/ year)
0.1429
0.1429
0.1429
0.1429
0.1429
0.1429
0.1429
0.1429
0.1429
0.1429
0.1026
0.1026
0.1026
0.1026
0.1026
0.1026
0.1026
0.1026
0.1026
0
0.6360
0.6214
0.0083
0.0064
1.19E-12
4.13E-04
3.96E-04
3.96E-04
Tot. trn mls
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
1.09E-05
1.09E-05
1.09E-05
1.09E-05
1.09E-05
1.09E-05
1.09E-05
1.09E-05
1.09E-05
1.09E-05
7.85E-06
7.85E-06
7.85E-06
7.85E-06
7.85E-06
7.85E-06
7.85E-06
7.85E-06
7.85E-06
0
0.0020
0.0019
2.56E-05
1.97E-05
Risk cont.
% of total
HE risk
0.02%
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%
0.01%
0.01%
0.01%
0.01%
0.01%
0%
3.73%
3.65%
0.05%
0.04%
0.0045
0.0045
0.0045
100.00%
99.56%
99.56%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
N
E
E
E
D
69
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-21 OTP - OTP crushed by structural collapse or large object inside possession (not at station)
HET-21 OTP
OT11I32
Infrastructure Defect OTP Crushed by Structural Collapse - Inside Possession
HET-21 OTP
OT11I54
Unsafe System of Work Employed by Workers OTP Crushed by Structural
Collapse - Inside Possession
HET-22 - Structural collapse at station
HET-22
RSTATSTR-F
Structural collapse at station
HET-23 - Explosion on passenger train
HET-23
PEXPLOS-PF
Spontaneous explosion on a passenger train
HET-24 - Explosion on freight train
HET-24
FEXPLOSHFF
Spontaneous explosion on a freight train (hazardous freight)
HET-24
FEXPLOS-FF
Spontaneous explosion on a freight train (non-hazardous freight)
HET-25 - Train divisions (not leading to collision)
HET-25A - Train divisions (not leading to collision): in station
HET-25A
USNOTESTPE Division in station - cause not established
HET-25A
USCOUERRPH Division in station due to coupling error
HET-25A
USDFCOUPPF Division in station due to defective coupling
HET-25A
USDRVBUTPH Division in station due to driver pressing the uncoupling button in error
HET-25A
USINCOUPPH Division in station due to inappropriate coupling
HET-25B - Train divisions (not leading to collision): on running line
HET-25B
URNOTESTPE Division on running line - cause not established
HET-25B
URDFCOUPPF Division on running line due to defective coupling
HET-25B
URCOUERRPH Division on running line due to coupling error
HET-25B
URINCOUPPH Division on running line due to inappropriate coupling
HET-25B
URDRVBUTPH Division on running line due to driver pressing the uncoupling button in error
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
OTP hrs
6.35E-12
National
frequency
(events/ year)
1.71E-05
1.28E-05
OTP hrs
2.12E-12
4.27E-06
4.92E-06
0.11%
E
Station
3.97E-06
0.0100
0.0100
0.0387
0.0387
100.00%
100.00%
E
Pass. trn mls
7.12E-11
0.0200
0.0200
0.0046
0.0046
100.00%
100.00%
E
Non pass. trn mls
Non pass. trn mls
1.91E-10
1.61E-10
0.0184
0.0100
0.0084
0.0693
0.0684
8.49E-04
100.00%
98.77%
1.23%
E
D
13.67
9.000
4.000
2.333
1.667
0.6667
0.3333
4.667
2.333
1.667
0.3333
0.3333
0
0.0128
0.0066
0.0029
0.0017
0.0012
4.89E-04
2.44E-04
0.0062
0.0031
0.0022
4.44E-04
4.44E-04
0
100.00%
51.47%
22.88%
13.34%
9.53%
3.81%
1.91%
48.53%
24.26%
17.33%
3.47%
3.47%
0%
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
1.42E-08
8.30E-09
5.93E-09
2.37E-09
1.19E-09
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
8.30E-09
5.93E-09
1.19E-09
1.19E-09
0
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
1.97E-05
1.48E-05
Risk cont.
% of total
HE risk
0.44%
0.33%
Deriv. of
prec. (D,
E, N)
E
D
D
D
D
D
D
D
D
D
N
70
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HET-26 - Collision between a failed train and an assisting train
HET-26
UASSILEFE
Low adhesion due to leaves leading to non-passenger train collision
HET-26
UASSISEFE
Failed train not properly secured leading to assisting non-passenger train
collision (Runaway)
HET-26
UASSIMIFE
Driver misjudges braking/failure to control train leading to assisting nonpassenger train collision
HET-26
UASSIRCFE
Low adhesion due to rail contamination leading to assisting non-passenger
train collision
HET-26
UASSILEPE
Low adhesion due to leaves leading to passenger train collision
HET-26
UASSISEPE
Failed train not properly secured leading to assisting passenger train collision
(Runaway)
HET-26
UASSIRCPE
Low adhesion due to rail contamination leading to assisting passenger train
collision
HET-26
UASSIMIPE
Driver misjudges braking/failure to control train leading to assisting passenger
train collision
HET-26
UASSICOPE
Driver loss of concentration leading to assisting passenger train collision
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
Non pass. trn mls
Non pass. trn mls
4.55E-09
4.55E-09
0.8571
0.2381
0.2381
0.0220
0.0056
0.0056
100.00%
25.37%
25.37%
D
D
Non pass. trn mls
2.28E-09
0.1190
0.0028
12.69%
D
Non pass. trn mls
2.28E-09
0.1190
0.0028
12.69%
D
Pass. trn mls
Pass. trn mls
1.69E-10
1.69E-10
0.0476
0.0476
0.0017
0.0017
7.96%
7.96%
D
D
Pass. trn mls
8.47E-11
0.0238
8.74E-04
3.98%
D
Pass. trn mls
8.47E-11
0.0238
8.74E-04
3.98%
D
Pass. trn mls
0
0
0
0%
N
HET-26
HET-26
HET-26
HET-26
UASSIINPE
UASSIOVPE
UASSIDBPE
UASSITCPE
Driver inexperience leading to assisting passenger train collision
Overspeeding leading to assisting passenger train collision
Defective brakes leading to assisting passenger train collision
Defective train control equipment leading to assisting passenger train collision
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
0
0
0
0
0
0
0
0
0
0
0
0
0%
0%
0%
0%
N
N
N
N
HET-26
UASSILAPE
Pass. trn mls
0
0
0
0%
N
HET-26
UASSIWEPE
Pass. trn mls
0
0
0
0%
N
HET-26
UASSIALPE
Pass. trn mls
0
0
0
0%
N
HET-26
HET-26
UASSIMEPE
UASSIPRPE
Pass. trn mls
Pass. trn mls
0
0
0
0
0
0
0%
0%
N
N
HET-26
UASSIERPE
Pass. trn mls
0
0
0
0%
N
HET-26
UASSICOFE
Low adhesion and driver fails to adjust to conditions leading to assisting
passenger train collision
Low adhesion due to weather conditions leading to assisting passenger train
collisions
Driver under the influence of alcohol leading to assisting passenger train
collision
Driver medical condition leading to assisting passenger train collision
Failed train not correctly protected leading to assisting passenger train
collision
Erroneous understanding of where failed train is located leading to assisting
passenger train collision
Driver loss of concentration leading to assisting non-passenger train collision
Non pass. trn mls
0
0
0
0%
N
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
71
Table B
Hazardous Event
Number
HET-26
HET-26
HET-26
HET-26
Precursor code
UASSIINFE
UASSIOVFE
UASSIDBFE
UASSITCFE
HET-26
UASSILAFE
HET-26
UASSIWEFE
HET-26
UASSIALFE
HET-26
UASSIMEFE
HET-26
UASSIPRFE
HET-26
UASSIERFE
Version 5.5/May 2008
Cause precursor description
Driver inexperience leading to assisting non-passenger train collision
Overspeeding leading to assisting non-passenger train collision
Defective brakes leading to assisting non-passenger train collision
Defective train control equipment leading to assisting non-passenger train
collision
Low adhesion and driver fails to adjust to conditions leading to assisting nonpassenger train collision
Low adhesion due to weather conditions leading to assisting non-passenger
train collisions
Driver under the influence of alcohol leading to assisting non-passenger train
collision
Driver medical condition leading to assisting non-passenger train collision
Normaliser
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
Non pass. trn mls
National
frequency
(events/
normaliser)
0
0
0
0
Non pass. trn mls
0
0
0
0%
N
Non pass. trn mls
0
0
0
0%
N
Non pass. trn mls
0
0
0
0%
N
Non pass. trn mls
0
0
0
0%
N
Failed train not correctly protected leading to assisting non-passenger train
collision
Erroneous understanding of where failed train is located leading to assisting
non-passenger train collision
Non pass. trn mls
0
0
0
0%
N
Non pass. trn mls
0
0
0
0%
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0
0
0
0
Risk cont.
(FWI / year)
0
0
0
0
Risk cont.
% of total
HE risk
0%
0%
0%
0%
Deriv. of
prec. (D,
E, N)
N
N
N
N
72
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
0.2358
0.0148
0.0148
100.00%
6.30%
6.30%
D
HEM-01 - Passenger injury during evacuation following stopped train
HEM-01A - Passenger injury during evacuation following stopped train (controlled evacuation)
HEM-01A
PEVCCNT--H
Passenger injured during controlled evacuation following a stopped train
Pass. jour
1.60E-09
2.567
1.800
1.800
HEM-01B - Passenger injury during evacuation following stopped train (uncontrolled evacuation)
HEM-01B
PEVCUCNT-H
Passenger injured during uncontrolled evacuation following a stopped train
Pass. jour
8.89E-11
0.1000
0.1000
0.0076
0.0076
3.23%
3.23%
D
Pass. jour
5.93E-10
0.6667
0.6667
0.2134
0.2134
90.48%
90.48%
D
0.0704
0.0688
0.0688
100.00%
97.72%
97.72%
D
HEM-01C - Passenger injury during evacuation following stopped train (due to overheating of train)
HEM-01C
POVERHEATE Passenger injury during evacuation following stopped train (due to
overheating of train)
HEM-02 - Passenger fall from train in running
HEM-02A - Passenger fall from train door in running (slam door)
HEM-02A
PPSLFALL-H
Passenger fall from slam door train in running(including jumped from Train)
Pass. jour
2.96E-10
0.7560
0.3333
0.3333
HEM-02B - Passenger fall from train door in running (non-slam door)
HEM-02B
PPPDFALL-H
Passenger falls from train door train in running(including jumped from Train)
Pass. jour
3.76E-10
0.4226
0.4226
0.0016
0.0016
2.28%
2.28%
D
Pass. jour
2.07E-09
2.533
2.333
2.333
0.0447
0.0028
0.0028
100.00%
6.33%
6.33%
D
Pass. jour
1.78E-10
0.2000
0.2000
0.0419
0.0419
93.67%
93.67%
D
7.73E-08
21.75
21.73
21.73
0.0774
0.0621
0.0621
100.00%
80.26%
80.26%
D
HEM-03 - Passenger struck while leaning out of train (train in running)
HEM-03A - Passenger struck by droplight while leaning out of train (train in running)
HEM-03A
PPDROPT--H
Passenger struck by ascending droplight window while leaning out of moving
train
HEM-03B - Passenger struck by lineside object (eg. bridge/stanchion) while leaning out of train
HEM-03B
PPLEANT--H
Passenger struck by lineside object (eg. bridge/stanchion) while leaning out of
train
HEM-04 - Passenger struck by object through train window
HEM-04A - Passenger struck by object through train window other than by projection from OTP
HEM-04A
PSTRKWIN-E
Passenger struck by object through train window
Version 5.5/May 2008
Pass. trn mls
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
73
Table B
Normaliser
National
frequency
(events/
normaliser)
OTP hrs
9.92E-09
National
frequency
(events/ year)
0.0213
0.0200
OTP hrs
6.37E-10
0.0013
4.97E-06
0.01%
E
HEM-05 - Train door closes on passenger
HEM-05
PPOWRD---H
Train door closes onto passenger (non-slam door stock)
HEM-05
PSLAMDR--H
Train door closes on passenger (slam door stock)
Pass. jour
Pass. jour
2.40E-07
5.33E-09
275.7
269.7
6.000
0.6962
0.6690
0.0272
100.00%
96.09%
3.91%
D
D
HEM-06 - Passenger fall between train and platform
HEM-06
PPLTFALL-H
Passenger fall between train and platform
Pass. jour
1.96E-07
221.0
221.0
2.011
2.011
100.00%
100.00%
D
HEM-07 - Passenger fall out of train onto track at station
HEM-07
PTSGFALL-H
Passenger fall out of train onto track at station
Pass. jour
6.08E-10
0.6841
0.6841
0.0093
0.0093
100.00%
100.00%
D
HEM-08 - Passenger fall from platform and struck by train
HEM-08
PPLGFALL-H
Passenger fall from platform and struck by train - general causes
HEM-08
PPLLFALL-H
Passenger fall from platform and struck by train under influence of alcohol
Pass. jour
Pass. jour
2.67E-09
2.37E-09
5.667
3.000
2.667
2.357
1.248
1.109
100.00%
52.94%
47.06%
D
D
Pass. jour
Pass. jour
Pass. jour
2.04E-07
2.64E-08
4.18E-09
460.4
264.1
229.7
29.67
4.700
3.593
2.454
2.134
0.2756
0.0437
100.00%
68.29%
59.39%
7.67%
1.22%
D
D
D
Pass. jour
4.44E-11
Pass. jour
Pass. jour
Pass. jour
1.65E-07
8.00E-09
1.19E-09
0.0500
196.3
186.0
9.000
1.342
4.65E-04
1.139
1.079
0.0522
0.0078
0.01%
31.71%
30.04%
1.45%
0.22%
Hazardous Event
Number
Precursor code Cause precursor description
HEM-04 OTP - Passenger struck by object through train window due to projection from OTP
HEM-04 OTP
POBOTPI-OE
Passenger struck by projection from OTP inside possession through train
window
HEM-04 OTP
PWINOTP-OE
Passenger hit by object through train window thrown by OTP inside
possession
HEM-09 - Passenger injury while boarding/alighting train (platform side)
HEM-09A - Passenger injury while alighting train (platform side)
HEM-09A
PTASFALL-H
Passenger injury while alighting stationary train
HEM-09A
PTALFALL-H
Passenger injury while alighting train under influence of alcohol
HEM-09A
PTALLTSP-H
Passenger injury while alighting on the cess side (long train at short platform)
HEM-09A
PTAMFALL-H
Passenger injury while alighting moving train
HEM-09B - Passenger injury while boarding train (platform side)
HEM-09B
PTBSFALL-H
Passenger injury while boarding stationary train
HEM-09B
PTBLFALL-H
Passenger injury while boarding train under influence of alcohol
HEM-09B
PTBMFALL-H
Passenger injury while boarding moving train
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.0153
0.0153
Risk cont.
% of total
HE risk
19.74%
19.74%
Deriv. of
prec. (D,
E, N)
E
E
D
D
D
74
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEM-10 - Passenger struck by train while on platform
HEM-10A - Passenger struck by train while on platform due to standing too close to platform edge
HEM-10A
PPLSTR---H
Passenger struck by train due to standing too close to platform edge
HEM-10B - Passenger struck by train door while on platform
HEM-10B
PPLSTD---E
Passenger injury due to being hit by train door while on platform
HEM-10 OTP - Passenger on platform struck by OTP inside possession
HEM-10 OTP
PSTROTP-OE
Passenger on Platform struck by OTP - Inside Possession
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
0.5126
0.5114
0.5114
5.98E-04
5.98E-04
5.72E-04
5.72E-04
100.00%
99.77%
99.77%
0.12%
0.12%
0.11%
0.11%
Deriv. of
prec. (D,
E, N)
Pass. jour
6.22E-09
Pass. jour
1.27E-10
OTP hrs
3.68E-09
7.150
7.000
7.000
0.1429
0.1429
0.0074
0.0074
0.4449
0.4443
0.2962
100.00%
99.85%
66.57%
D
D
D
E
HEM-11 - Passenger struck while crossing track at station on crossing
HEM-11A - Passenger struck while crossing track at station on crossing outside a possession
HEM-11A
PSTCROSS-H
Passenger struck while crossing track at station on crossing (misuse - error)
Pass. jour
3.03E-10
0.5114
0.5106
0.3404
HEM-11A
PSTCROSVIH
Pass. jour
1.51E-10
0.1702
0.1481
33.28%
D
HEM-11A
PSTCROSPRH
Pass. jour
0
0
0
0%
N
OTP hrs
3.68E-10
7.43E-04
7.43E-04
6.49E-04
6.49E-04
0.15%
0.15%
E
OTP hrs
0
0
0
0%
N
OTP hrs
0
0
0
0%
N
Tot. trn mls
Tot. trn mls
1.63E-08
4.28E-10
4.02E-09
3.503
3.498
3.408
0.0897
0.0051
0.0051
100.00%
99.85%
97.29%
2.56%
0.15%
0.15%
D
D
OTP hrs
5.580
5.571
5.429
0.1429
0.0081
0.0081
Passenger struck while crossing track at station on crossing (misuse violation)
Passenger struck while crossing track at station on crossing (proper use)
HEM-11 OTP - Passenger struck while crossing track at station on crossing by a OTP inside a possession
HEM-11 OTP
PSTRXOTPOE Passenger stuck while crossing track at station on crossing by an OTP inside
a possession (misuse - error)
HEM-11 OTP
PSTRXOTPPR Passenger stuck while crossing track at station on crossing by an OTP inside
a possession (proper use)
HEM-11 OTP
PSTRXOTPVI
Passenger stuck while crossing track at station on crossing by an OTP inside
a possession (misuse - violation)
HEM-12 - Adult/child trespasser struck while crossing track at station
HEM-12A - Adult/child trespasser struck while crossing track at station
HEM-12A
KATRESTN-H
Adult trespasser struck while crossing track at station
HEM-12A
JCTRESTN-H
Child trespasser struck while crossing track at station
HEM-12 OTP - Adult/child trespasser struck while crossing track at station in possession
HEM-12 OTP
OTRESTN-OH
Adult / child trespasser struck by an OTM outside a possession or OTP inside
a possession
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
N
75
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEM-13 - Passenger crushing caused by crowding on train
HEM-13
POVERCR--H
Train crowding leading to passenger injury
HEM-14 - Workforce (not track worker) struck/crushed by train
HEM-14A - Workforce (not track worker) struck/crushed by train outside possession
HEM-14A
GTDINATT-H
Train crew (driver) inattention while on track leading to being struck/crushed
by train
HEM-14A
OWILLSTR-H
Other workforce ill health - fall into path of train
HEM-14A
TCILLSTR-H
Train crew (other) ill health - fall into path of train
HEM-14A
TDILLSTR-H
Train crew (driver) ill health - fall into path of train
HEM-14A
TCSTRFALLH
Train crew (other) struck by train following fall from platform
HEM-14A
OWSTRTRK-H Other workforce struck/crushed while taking short cuts across lines in station
HEM-14A
TDSTRTRK-H
Train crew (driver) struck/crushed while taking short cuts across lines in
station
HEM-14A
OWSTRFALLH Other workforce struck by train following fall from platform
HEM-14A
TDSTRFALLH
Train crew (driver) struck by train following fall from platform
HEM-14A
TCSTRTRK-H
Train crew (other) struck/crushed while taking short cuts across lines in
station
HEM-14B - Workforce (not track worker) struck/crushed by train outside possession (error during coupling)
HEM-14B
GOWCOCRU-H Other workforce error during coupling/uncoupling leading to being
struck/crushed by train
HEM-14B
GTDCOCRU-H Train crew (driver) error during coupling/uncoupling leading to being
struck/crushed by train
HEM-14 OTP - OTP workforce (not track worker) struck/crushed by OTP inside possession
HEM-14 OTP
GTDRLOTPOE OTP Train crew (driver) struck/crushed by OTP rollover inside possession
HEM-14 OTP
HEM-14 OTP
GTDSCOTPOE
GTDSTOTPOH
HEM-14 OTP
GTCSTOTPOH
Version 5.5/May 2008
OTP Train crew (driver) struck/crushed by OTP inside possession
OTP Train crew (driver) struck/crushed by machine during
coupling/uncoupling inside possession
OTP Train crew (other) struck/crushed by machine during
coupling/uncoupling inside possession
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
Pass. jour
9.19E-09
10.33
10.33
0.0705
0.0705
100.00%
100.00%
D
Tot. trn mls
1.02E-09
0.7121
0.3400
0.3400
0.3564
0.2648
0.2648
100.00%
74.30%
74.30%
D
Pass. jour
Pass. trn mls
Tot. trn mls
Pass. trn mls
Pass. jour
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0%
0%
0%
0%
0%
N
N
N
N
N
Tot. trn mls
0
0
0
0%
N
Pass. jour
Tot. trn mls
Pass. trn mls
0
0
0
0
0
0
0
0
0
0%
0%
0%
N
N
N
Pass. jour
1.78E-10
0.2500
0.2000
0.0690
0.0552
19.37%
15.50%
D
Tot. trn mls
1.50E-10
0.0500
0.0138
3.87%
D
OTP hrs
9.92E-09
0.1221
0.0200
0.0225
0.0148
6.32%
4.15%
D
OTP hrs
OTP hrs
5.97E-09
2.23E-08
0.0120
0.0450
0.0066
5.55E-04
1.86%
0.16%
D
D
OTP hrs
2.23E-08
0.0450
5.55E-04
0.16%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
76
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEM-15 - Train crew/ track worker fall from train/OTP in running
HEM-15A - Train crew fall from train in running outside possession
HEM-15A
GTDFAFRT-H
Train crew (driver) falls from train in running
HEM-15A
GTCFAFRT-H
Train crew (other) falls from train in running
HEM-15 OTP - Track worker fall from OTP in running inside possession
HEM-15 OTP
GTWFAFRT-H
Track worker fall from OTP in running
HEM-16 - Workforce injury while boarding/alighting train
HEM-16A - Workforce injury while alighting train to platform outside possession
HEM-16A
GTCALPLT-H
Train crew (other) injury while alighting train to platform
HEM-16A
GOWALPLT-H
Other workforce injury while alighting train to platform
HEM-16A
GTDALPLT-H
Train crew (driver) injury while alighting train to platform
HEM-16A
GTWALPLT-H
Track worker injury while alighting train to platform
HEM-16B - Workforce injury while alighting train to track outside possession
HEM-16B
GTDALTRK-H
Train crew (driver) injury while alighting train to track
HEM-16B
GTWALTRK-H
Track worker injury while alighting train to track
HEM-16B
GOWALTRK-H Other workforce injury while alighting train to track
HEM-16B
GTCALTRK-H
Train crew (other) injury while alighting train to track
HEM-16C - Workforce injury while boarding train from platform outside possession
HEM-16C
GOWBOPLT-H Other workforce injury while boarding train from platform
HEM-16C
GTCBOPLT-H
Train crew (other) injury while boarding train from platform
HEM-16C
GTDBOPLT-H
Train crew (driver) injury while boarding train from platform
HEM-16C
GTWBOPLT-H Track worker injury while boarding train from platform
HEM-16D - Workforce injury while boarding train from track outside possession
HEM-16D
GTDBOTRK-H
Train crew (driver) injury while boarding train from track
HEM-16D
GOWBOTRK-H Other workforce injury while boarding train from track
HEM-16D
GTWBOTRK-H Track worker injury while boarding train from track
HEM-16D
GTCBOTRK-H
Train crew (other) injury while boarding train from track
HEM-16 OTP - OTP workforce fall getting on/off OTP inside possession
HEM-16 OTP
GTCBAOTPOE OTP Train crew (other) fall getting on/off inside possession
HEM-16 OTP
GTDBAOTPOE OTP Train crew (driver) fall getting on/off OTP inside possession
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
Tot. trn mls
Pass. trn mls
1.50E-10
1.78E-10
OTP hrs
4.96E-07
Pass. trn mls
Pass. jour
Tot. trn mls
Trk wrkr hrs
2.60E-07
4.90E-08
3.77E-08
3.64E-09
Tot. trn mls
Trk wrkr hrs
Pass. jour
Pass. trn mls
6.18E-08
1.09E-07
3.00E-09
6.00E-09
Pass. jour
Pass. trn mls
Tot. trn mls
Trk wrkr hrs
3.70E-08
1.31E-07
4.38E-08
0
Tot. trn mls
Pass. jour
Trk wrkr hrs
Pass. trn mls
2.30E-08
3.00E-09
1.82E-08
2.37E-09
OTP hrs
OTP hrs
1.16E-06
3.31E-07
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
1.100
0.1000
0.0500
0.0500
1.000
1.000
0.0613
0.0190
0.0095
0.0095
0.0423
0.0423
100.00%
31.01%
15.51%
15.51%
68.99%
68.99%
D
E
281.4
141.0
73.07
55.11
12.58
0.2000
31.66
20.60
6.000
3.374
1.686
93.03
41.62
36.81
14.60
0
12.71
7.667
3.374
1.000
0.6667
3.000
2.333
0.6667
1.186
0.7224
0.3744
0.2824
0.0645
0.0010
0.1550
0.1008
0.0294
0.0165
0.0083
0.2351
0.1052
0.0931
0.0369
0
0.0485
0.0293
0.0129
0.0038
0.0025
0.0250
0.0194
0.0055
100.00%
60.91%
31.57%
23.81%
5.44%
0.09%
13.07%
8.50%
2.48%
1.39%
0.70%
19.83%
8.87%
7.85%
3.11%
0%
4.09%
2.47%
1.09%
0.32%
0.21%
2.11%
1.64%
0.47%
D
D
D
D
D
D
D
D
D
D
D
D
N
D
D
D
D
D
D
77
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEM-17 - Train crew struck while leaning out of train (train in running)
HEM-17A - Train crew struck while leaning out of train outside possession
HEM-17A
GTCSTRLE-H
Train crew (other) struck while leaning out of train
HEM-17A
GTDSTRLE-H
Train crew (driver) struck while leaning out of train
HEM-17 OTP - OTP Train crew struck while leaning out of OTP inside possession
HEM-17 OTP
GTCSLOTPOH OTP Train crew (other) struck while leaning out of OTP inside possession
HEM-17 OTP
GTDSLOTPOH
OTP Train crew (driver) struck while leaning out of OTP inside possession
HEM-18 - Train crew hit by object through train window
HEM-18A - Train crew hit by object through train window outside possession
HEM-18A
GTDOBWIN-H
Train crew (driver) hit by object through train window
HEM-18A
GTCOBWIN-H
Train crew (other) hit by object through train window
HEM-18 OTP - OTP Train crew hit by object through OTP window inside possession
HEM-18 OTP
GTCOBOTPOE OTP train crew (driver) injury following collision of NRMI train with projection
from OTP inside possession
HEM-18 OTP
GTDOBOTPOE OTP train crew (driver) injury following collision of NRMI train with projection
from OTP inside possession
HEM-18 OTP
GTCPTOTPOE OTP Train crew (other) hit by projection from another train through OTP
window inside possession
HEM-18 OTP
GTDPTOTPOE OTP Train crew (driver) hit by projection from another train through OTP
window inside possession
HEM-18 OTP
GTDWDOTPOE OTP train crew (driver) hit by object through OTP window inside possession
HEM-18 OTP
GTCWDOTPOE OTP train crew (other) hit by object through OTP window inside possession
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
0.0315
0.0300
0.0169
0.0130
0.0016
7.79E-04
100.00%
95.06%
53.71%
41.35%
4.94%
2.47%
D
D
Pass. trn mls
Tot. trn mls
2.98E-08
1.93E-08
OTP hrs
2.48E-08
14.92
14.82
8.376
6.447
0.1000
0.0500
OTP hrs
2.48E-08
0.0500
7.79E-04
2.47%
E
Tot. trn mls
Pass. trn mls
8.10E-08
3.56E-08
7.63E-08
0.1754
0.1616
0.1179
0.0437
0.0138
0.0063
100.00%
92.14%
67.24%
24.90%
7.86%
3.57%
D
D
OTP hrs
37.64
37.00
27.00
10.00
0.6433
0.1540
OTP hrs
7.63E-08
0.1540
0.0063
3.57%
E
OTP hrs
5.83E-08
0.1176
4.86E-04
0.28%
D
OTP hrs
5.83E-08
0.1176
4.86E-04
0.28%
D
OTP hrs
2.48E-08
0.0500
1.44E-04
0.08%
D
OTP hrs
2.48E-08
0.0500
1.44E-04
0.08%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
E
E
78
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
HEM-19 - Track worker struck/crushed by train
HEM-19
GFSAFW--UH
Track worker struck/crushed due to the failure of a safe system of working
being set up
HEM-19
GFAILA--UH
Track worker failure to move out of path of train (aware of train)
HEM-19
GFAILN--UH
Track worker failure to move out of path of train (not aware of train)
HEM-19
GLOS----UH
Lookout struck/crushed by train
HEM-19
UBRP----UF
Track worker struck/crushed following train brake failure in possession
Trk wrkr hrs
1.94E-08
4.700
1.063
2.323
0.5755
100.00%
24.77%
D
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
6.71E-09
6.71E-09
7.23E-09
5.32E-09
0.3685
0.3685
0.3968
0.2923
0.1994
0.1994
0.1614
0.1582
8.58%
8.58%
6.95%
6.81%
D
D
D
D
HEM-19
HEM-19
HEM-19
GSTF----UH
GMOVE---UH
GSTR----UH
Track worker slip, trip or fall into path of train
Track worker struck by train (unknown cause)
Track worker strays from lineside onto running line and struck/crushed
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
6.71E-09
4.93E-09
5.13E-09
0.3685
0.2706
0.2816
0.1499
0.1465
0.1145
6.45%
6.30%
4.93%
D
D
D
HEM-19
HEM-19
GCOM----UH
GPOS----UH
Trk wrkr hrs
Trk wrkr hrs
3.78E-09
2.67E-09
0.2076
0.1466
0.1123
0.0793
4.84%
3.41%
D
D
HEM-19
HEM-19
UDRV----UH
GSRR----UH
Track worker struck/crushed due to failure in communication
Track worker struck due to incorrect possession initiation/removal
arrangements
Track worker struck/crushed following driver/machine operator error
Track worker strays onto adjacent running line and struck/crushed (red zone)
Trk wrkr hrs
Trk wrkr hrs
2.53E-09
2.37E-09
0.1386
0.1301
0.0750
0.0529
3.23%
2.28%
D
D
HEM-19
HEM-19
HEM-19
HEM-19
GLOF----UH
GALIT----UH
GSHUNT--UH
GSTL----UH
Track worker struck by train due to failure of lookout
Track worker struck/crushed due to alighting a train in error
Track worker struck/crushed by train during shunting movements
Track worker in possession strays onto running line and struck/crushed
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
1.60E-09
1.48E-09
1.32E-09
7.78E-10
0.0876
0.0810
0.0727
0.0427
0.0474
0.0329
0.0296
0.0174
2.04%
1.42%
1.27%
0.75%
D
D
D
D
HEM-19
HEM-19
HEM-19
WILLH-PT
GPAT----UH
UWRS----UH
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
7.71E-10
7.48E-10
7.28E-10
0.0423
0.0411
0.0400
0.0172
0.0167
0.0163
0.74%
0.72%
0.70%
D
D
D
HEM-19
HEM-19
FWAG----FH
GSSC----UH
Trk wrkr hrs
Trk wrkr hrs
4.88E-10
6.03E-10
0.0268
0.0331
0.0145
0.0135
0.62%
0.58%
D
D
HEM-19
HEM-19
GGGE----UH
GCUP----FH
Trk wrkr hrs
Trk wrkr hrs
6.01E-10
5.38E-10
0.0330
0.0295
0.0134
0.0120
0.58%
0.52%
D
D
HEM-19
UOVP----UH
Track worker ill-health - fall into path of train
Track worker struck by train in mobile site
Track worker struck/crushed when getting out of the wrong side of a
train/OTM
Train/wagons not secured correctly
Track worker struck by train while taking short cuts across lines (not in
station)
Track worker struck by out of gauge item on passing train
Track worker crushed due to errors during coupling/uncoupling trains in
possession
Track worker struck given train overspeeding in possession
Trk wrkr hrs
4.03E-10
0.0221
0.0120
0.52%
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
79
Table B
Hazardous Event
Number
HEM-19
HEM-19
HEM-19
Precursor code
USPD----UH
UDRP----UE
GSSS----SH
Cause precursor description
Train enters possession incorrectly due to signal passed at danger
Derailment of train/OTM in possession
Track worker struck by train while taking short cuts across lines in station
Normaliser
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
National
frequency
(events/
normaliser)
3.54E-10
3.54E-10
4.48E-10
HEM-19
GDRL----UE
Track worker struck/crushed by train derailed on line adjacent to work site
Trk wrkr hrs
3.11E-10
0.0171
0.0092
0.40%
D
HEM-19
HEM-19
GFPLT---UE
SPOS----UE
Track worker fall off platform and being struck by train
Wrongside signal failures allowing train into possession
Trk wrkr hrs
Trk wrkr hrs
3.75E-10
2.51E-10
0.0206
0.0138
0.0084
0.0075
0.36%
0.32%
D
D
HEM-20 - Workforce struck by flying object (includes objects thrown by OTM movements outside a possession)
HEM-20A - Workforce (non-track worker) struck by small flying object disturbed by or thrown from passing train outside possession
HEM-20A
GTCSTGRT-P
Train crew (other) struck by grit/dust
Pass. trn mls
4.98E-08
HEM-20A
GTDSTGRT-P
Train crew (driver) struck by grit/dust
Tot. trn mls
2.40E-08
HEM-20A
GTCSTFLY-P
Train crew (other) struck by other flying object
Pass. trn mls
2.61E-08
HEM-20A
GTDSTFLY-P
Train crew (driver) struck by other flying object
Tot. trn mls
8.00E-09
HEM-20A
GOWSTGRT-P Other workforce struck by grit/dust
Pass. jour
2.37E-09
HEM-20A
GOWSTFLY-P
Other workforce struck by other flying object
Pass. jour
2.96E-10
HEM-20B - Track worker struck by flying object disturbed by or thrown from passing train outside possession
HEM-20B
GTWSTFLY-P
Track worker struck by other flying object
Trk wrkr hrs
1.34E-07
HEM-20B
GTWSTGRT-P Track worker struck by grit/dust
Trk wrkr hrs
4.86E-08
HEM-20 OTP - Track worker or OTP train driver struck by flying object disturbed by or thrown from passing train or vehicle inside possession
HEM-20 OTP
GTWFYOTPOE Track worker struck by flying object inside possession
OTP hrs
4.96E-07
HEM-20 OTP
GTDFYOTPOE OTP Train crew (driver) struck by flying object inside possession
OTP hrs
6.26E-08
46.13
35.00
14.00
8.000
7.333
2.667
2.667
0.3333
10.00
7.333
2.667
1.126
1.000
0.1263
0.1114
0.0791
0.0316
0.0181
0.0166
0.0060
0.0060
7.54E-04
0.0292
0.0214
0.0078
0.0030
0.0027
3.42E-04
100.00%
71.03%
28.41%
16.24%
14.88%
5.41%
5.41%
0.68%
26.23%
19.24%
7.00%
2.74%
2.43%
0.31%
HEM-21 - Workforce fall between train and platform
HEM-21
GTCTRPLAUH Train crew (other) fall between train and platform
HEM-21
GOWTRPLAUH Other workforce fall between train and platform
HEM-21
GTDTRPLAUH Train crew (driver) fall between train and platform
HEM-21
GTWTRPLAUH Track worker fall between train and platform
103.6
74.55
17.00
12.00
0
0.5037
0.3626
0.0827
0.0584
0
100.00%
71.99%
16.42%
11.59%
0%
Version 5.5/May 2008
Pass. trn mls
Pass. jour
Tot. trn mls
Trk wrkr hrs
2.65E-07
1.51E-08
3.60E-08
0
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0.0195
0.0195
0.0246
Risk cont.
(FWI / year)
0.0105
0.0105
0.0100
Risk cont.
% of total
HE risk
0.45%
0.45%
0.43%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
N
80
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Normaliser
National
frequency
(events/
normaliser)
HEM-22 - Workforce fall out of train onto track at station
HEM-22
GTCFATRK-H
Train crew (other) fall out of train onto track at station
HEM-22
GTDFATRK-H
Train crew (driver) fall out of train onto track at station
HEM-22
GTWFATRK-H Track worker fall out of train onto track at station
HEM-22
GOWFATRK-H Other workforce fall out of train onto track at station
Pass. trn mls
Tot. trn mls
Trk wrkr hrs
Pass. jour
2.37E-10
1.00E-10
0
0
0.1000
0.0667
0.0333
0
0
0.0145
0.0097
0.0048
0
0
100.00%
66.67%
33.33%
0%
0%
D
D
N
N
HEM-23 - Train door closes on workforce
HEM-23
GTCEXTDO-E
External train door closes on train crew (other)
HEM-23
GTDEXTDO-E
External train door closes on train crew (driver)
HEM-23
GOWEXTDO-E External train door closes on other workforce
HEM-23
GTWEXTDO-E External train door closes on track worker
Pass. trn mls
Tot. trn mls
Pass. jour
Trk wrkr hrs
1.13E-07
7.57E-08
1.55E-08
1.82E-08
75.30
31.64
25.23
17.43
1.000
0.2373
0.0997
0.0795
0.0549
0.0032
100.00%
42.02%
33.51%
23.15%
1.33%
D
D
D
D
HEM-24 - Track worker struck while leaning out of on-track machine/vehicle
HEM-24
GTWSTRLE-H
Track worker struck while leaning out of on-track machine/vehicle
Trk wrkr hrs
3.64E-09
0.2000
0.2000
0.0031
0.0031
100.00%
100.00%
D
38.53
38.33
38.33
0.2000
0.2000
25.95
25.87
25.87
0.0766
0.0766
100.00%
99.70%
99.70%
0.30%
0.30%
D
2.210
2.200
2.200
0.0100
0.0100
2.237
2.232
2.232
0.0051
0.0051
100.00%
99.77%
99.77%
0.23%
0.23%
D
HEM-25 - Adult trespasser struck/crushed while on the mainline railway
HEM-25A - Adult trespasser struck/crushed while on the mainline railway outside possession
HEM-25A
KADTRES--H
Adult trespasser struck/crushed by train on NRMI
HEM-25 OTP - Adult trespasser struck/crushed by OTP inside possession
HEM-25 OTP
KSTROTP-OH
Adult trespasser struck/crushed by OTP inside possession
HEM-26 - Child trespasser struck/crushed while on mainline railway
HEM-26A - Child trespasser struck/crushed while on mainline railway outside possession
HEM-26A
JCHTRES--H
Child trespasser struck/crushed by train on NRMI
HEM-26 OTP - Child trespasser struck/crushed by OTP inside possession
HEM-26 OTP
JSTROTP-OH
Child trespasser struck/crushed by OTP inside possession
Version 5.5/May 2008
Tot. trn mls
1.15E-07
OTP hrs
9.92E-08
Tot. trn mls
6.60E-09
OTP hrs
4.95E-09
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
D
D
81
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
7.159
0.1735
0.0721
100.00%
2.42%
1.01%
E
HEM-27 - MOP pedestrian struck/crushed by train on level crossing or footpath crossing
HEM-27A - MOP pedestrian struck/crushed by train on level crossing: AOCL & ABCL only
HEM-27A
KSTRAOCL1H MOP pedestrian struck/crushed by train on - AOCL (Improper use - error)
LXs: AOCL
7.09E-04
9.005
0.2182
0.0907
HEM-27A
KSTRAOCL2H
MOP pedestrian struck/crushed by train on - AOCL (Improper use - violation)
LXs: AOCL
4.07E-04
0.0522
0.0415
0.58%
D
HEM-27A
KSTRABCL1H
MOP pedestrian struck/crushed by train on - ABCL (Improper use - error)
LXs: ABCL
9.57E-04
0.0479
0.0380
0.53%
E
HEM-27A
KSTRABCL2H
MOP pedestrian struck/crushed by train on - ABCL (Improper use - violation)
LXs: ABCL
5.50E-04
0.0275
0.0219
0.31%
E
0.0017
3.782
0.7685
3.007
0.6109
42.00%
8.53%
D
HEM-27B - MOP pedestrian struck/crushed by train on level crossing: other crossing (AHB, MG/MCB/CCTV & all UWC)
HEM-27B
KSTRAHB-1H
MOP pedestrian struck/crushed by train on - AHB (Improper use - error)
LXs: AHB
HEM-27B
KSTRMGB-1H
LXs: MG, MCB + CCTV
8.76E-04
0.7256
0.5769
8.06%
D
KSTRUWC-1H
MOP pedestrian struck/crushed by train on - MG, MCB + CCTV (Improper
use - error)
MOP pedestrian struck/crushed by train on - UWC (Improper use - error)
HEM-27B
LXs: UWC
5.13E-04
0.5442
0.4327
6.04%
D
HEM-27B
KSTRAHB-2H
MOP pedestrian struck/crushed by train on - AHB (Improper use - violation)
LXs: AHB
9.80E-04
0.4419
0.3513
4.91%
D
HEM-27B
KSTRMGB-2H
LXs: MG, MCB + CCTV
5.04E-04
0.4172
0.3317
4.63%
D
HEM-27B
KSTRUWC-2H
MOP pedestrian struck/crushed by train on - MG, MCB + CCTV (Improper
use - violation)
MOP pedestrian struck/crushed by train on - UWC (Improper use - violation)
LXs: UWC
2.95E-04
0.3129
0.2488
3.47%
E
HEM-27B
KSTRUWCT1H
MOP pedestrian struck/crushed by train on - UWC + T (Improper use - error)
LXs: UWC + T
1.09E-04
0.1814
0.1442
2.01%
D
HEM-27B
KSTRUWCM1H MOP pedestrian struck/crushed by train on - UWC + MWL (Improper use error)
KSTRUWCT2H MOP pedestrian struck/crushed by train on - UWC + T (Improper use violation)
KSTRUWCM2H MOP pedestrian struck/crushed by train on - UWC + MWL (Improper use violation)
LXs: UWC + MWL
0.0020
0.1814
0.1442
2.01%
E
LXs: UWC + T
6.28E-05
0.1043
0.0829
1.16%
D
LXs: UWC + MWL
0.0011
0.1043
0.0829
1.16%
D
HEM-27B
HEM-27B
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
82
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEM-27C - MOP pedestrian struck/crushed by train on level crossing: footpath crossing
HEM-27C
KFOOTCR-1H
MOP pedestrian struck/crushed by train on - FP (Improper use - error)
HEM-27C
KFOOTCR-2H
MOP pedestrian struck/crushed by train on - FP (Improper use - violation)
HEM-27 OTP - MOP pedestrian struck/crushed by OTP inside possession on level crossing
HEM-27 OTP
KSTRFP--OH
MOP pedestrian struck/crushed by OTP on FP level crossing inside
possession
HEM-27 OTP
KSTRUWCTOH MOP pedestrian struck/crushed by OTP on UWC+T level crossing inside
possession
HEM-27 OTP
KSTRUWC-OH MOP pedestrian struck/crushed by OTP on UWC level crossing inside
possession
HEM-27 OTP
KSTRMGB-OH MOP pedestrian struck/crushed by OTP on MG/B/CCTV level crossing inside
possession
HEM-27 OTP
KSTRAHB-OH
MOP pedestrian struck/crushed by OTP on AHB level crossing inside
possession
HEM-27 OTP
KSTRUWCMOH MOP pedestrian struck/crushed by OTP on UWC+MWL level crossing inside
possession
HEM-27 OTP
KSTRAOCLOH MOP pedestrian struck/crushed by OTP on AOCL level crossing inside
possession
HEM-27 OTP
KSTRABCLOH MOP pedestrian struck/crushed by OTP on ABCL level crossing inside
possession
HEM-29 - MOP outside mainline railway struck/crushed as a result of mainline railway operations
HEM-29
KRCIOPS--E
MOP outside NRMI struck/crushed as a result of NRMI operations (includes
OTM operations outside a possession and OTP operations inside a
possession)
HEM-30 - MOP fall while riding illegally on train
HEM-30A - MOP fall while riding illegally on train outside possession
HEM-30A
KSURF----H
MOP fall/injured while riding illegally on train (surfing)
HEM-30A
KELSUR---E
MOP electrocuted while riding illegally on train (surfing)
HEM-30 OTP - MOP fall while riding illegally on OTP inside possession
HEM-30 OTP
KSURFOYPOH MOP fall while riding illegally on OTP inside a possession
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
LXs: FP
LXs: FP
0.0012
7.06E-04
National
frequency
(events/ year)
5.000
3.175
1.825
OTP hrs
8.78E-10
0.0051
0.0018
0.0040
0.0014
0.06%
0.02%
D
OTP hrs
5.65E-10
0.0011
9.06E-04
0.01%
D
OTP hrs
5.26E-10
0.0011
8.43E-04
0.01%
D
OTP hrs
2.92E-10
5.89E-04
4.68E-04
0.01%
D
OTP hrs
1.55E-10
3.12E-04
2.48E-04
0.00%
D
OTP hrs
4.37E-11
8.82E-05
7.01E-05
0.00%
D
OTP hrs
4.34E-11
8.75E-05
6.96E-05
0.00%
D
OTP hrs
1.66E-11
3.35E-05
2.66E-05
0.00%
D
Trk mts
6.44E-10
0.0200
0.0200
0.0024
0.0024
100.00%
100.00%
E
4.938
4.933
4.333
0.6000
0.0045
0.0045
0.9393
0.9387
0.6072
0.3315
6.24E-04
6.24E-04
100.00%
99.93%
64.64%
35.29%
0.07%
0.07%
Tot. trn mls
Tot. trn mls
1.30E-08
1.80E-09
OTP hrs
2.21E-09
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
3.975
2.524
1.451
Risk cont.
% of total
HE risk
55.52%
35.25%
20.27%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
83
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEM-31 - MOP suicide or attempted suicide (open verdict)
HEM-31A - MOP suicide (attempted)
HEM-31A
KSUIAT---H
MOP Attempted suicide or suspected suicide not resulting in fatality
HEM-31B - MOP suicide
HEM-31B
KSUICD---H
MOP suicide or suspected suicide resulting in fatality (may include open
verdict)
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
222.5
3.375
3.375
219.1
219.1
100.00%
1.52%
1.52%
98.48%
98.48%
D
Tot. trn mls
1.45E-07
Tot. trn mls
6.55E-07
266.7
48.33
48.33
218.3
218.3
Trk mts
8.59E-08
2.667
2.667
0.0067
0.0067
100.00%
100.00%
D
HEM-38 - Passenger injury due to sudden train movement
HEM-38
PPABODLRUP Passenger strikes part of body eg head, knee, ribs etc due to train lurching
Pass. trn mls
1.31E-07
98.73
36.96
0.5597
0.1695
100.00%
30.29%
D
HEM-38
PPABODBRUP
Passenger strikes part of body eg head, knee, ribs etc due to train braking
Pass. trn mls
6.58E-08
18.49
0.1582
28.27%
D
HEM-38
HEM-38
PPASCALRUP
PPAOBJLRUP
Pass. trn mls
Pass. trn mls
5.22E-08
4.98E-08
14.67
14.00
0.0673
0.0642
12.02%
11.47%
D
D
HEM-38
HEM-38
HEM-38
PPAOTHBRUP
PPAOTHLRUP
PPAOBJBRUP
Pass. trn mls
Pass. trn mls
Pass. trn mls
1.66E-08
2.21E-08
1.07E-08
4.667
6.200
3.000
0.0399
0.0284
0.0257
7.13%
5.08%
4.59%
D
D
D
HEM-38
PPASCABRUP
Passenger scald/burn due to train lurching
Passenger struck by object inside train eg luggage, catering trolley due to
train lurching
Passenger: other due to train braking
Passenger: other due to train lurching
Passenger struck by object inside train eg luggage, catering trolley due to
train braking
Passenger scald/burn due to train braking
Pass. trn mls
2.67E-09
0.7500
0.0064
1.15%
D
Pass. trn mls
6.88E-07
399.3
193.3
1.111
0.5390
100.00%
48.49%
D
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.10E-07
1.76E-07
1.66E-07
59.16
49.60
46.71
0.1649
0.1383
0.1302
14.84%
12.44%
11.72%
D
D
D
Pass. trn mls
7.00E-08
19.67
0.0540
4.86%
D
HEM-32 - MOP struck by object from the mainline railway
HEM-32
KRCIOBJ--E
MOP struck by objects from NRMI (includes objects thrown by/from OTM
outside possession and OTP inside possession)
HEM-39 - Train crew injury due to sudden train movement
HEM-39
GTCBODLRUP Train crew (other) strikes part of body eg head, knee, ribs etc due to train
lurching
HEM-39
GTCSCALRUP Train crew (other) scald/burn due to train lurching
HEM-39
GTCOTHLRUP Train crew (other): other due to train lurching
HEM-39
GTCOBJLRUP Train crew (other) struck by object inside train eg luggage, catering trolley due
to train lurching
HEM-39
GTCBODBRUP Train crew (other) strikes part of body eg head, knee, ribs etc due to train
braking
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
84
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEM-39
GTCOBJBRUP Train crew (other) struck by object inside train eg luggage, catering trolley due
to train braking
HEM-39
GTCOTHBRUP Train crew (other): other due to train braking
HEM-39
GTDINJLRUP
Train crew (driver) injury due to train lurching
HEM-39
GTCSCABRUP Train crew (other) scald/burn due to train braking
HEM-39
GTDINJBRUP
Train crew (driver) injury due to train braking
HEM-40 - MOP struck by train due to standing too close to platform edge
HEM-40
PMPSTR---H
MOP struck by train due to standing too close to platform edge
Version 5.5/May 2008
Normaliser
Pass. trn mls
National
frequency
(events/
normaliser)
3.71E-08
National
frequency
(events/ year)
10.43
Risk cont.
(FWI / year)
0.0287
Risk cont.
% of total
HE risk
2.58%
Deriv. of
prec. (D,
E, N)
D
Pass. trn mls
Tot. trn mls
Pass. trn mls
Tot. trn mls
2.37E-08
1.92E-08
1.66E-08
8.00E-09
6.667
6.400
4.667
2.667
0.0183
0.0178
0.0128
0.0073
1.65%
1.61%
1.15%
0.66%
D
D
D
D
Tot. trn mls
7.11E-10
0.2371
0.2371
0.1837
0.1837
100.00%
100.00%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
85
Table B
Page left blank intentionally
Version 5.5/May 2008
86
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-01 - Workforce exposure to fire
HEN-01
YLNOFIRE-E
Track worker exposure to lineside fire (other than in station)
HEN-01
GTDOFIRE-E
Train crew (driver) exposure to lineside fire (other than in station)
Normaliser
National
frequency
(events/
normaliser)
Trk wrkr hrs
Tot. trn mls
3.64E-08
3.00E-09
National
frequency
(events/ year)
3.000
2.000
1.000
Risk cont.
(FWI / year)
0.0373
0.0248
0.0124
Risk cont.
% of total
HE risk
100.00%
66.67%
33.33%
Deriv. of
prec. (D,
E, N)
D
D
HEN-02 - Lineside fire in station
HEN-02
YLNSFIRE-E
Other workforce exposure to lineside fire in station
Pass. jour
3.56E-10
0.4000
0.4000
0.0027
0.0027
100.00%
100.00%
D
HEN-03 - Fire in station
HEN-03
YSTAFIRE-E
Fire in station
Pass. jour
5.93E-10
0.6667
0.6667
0.0081
0.0081
100.00%
100.00%
D
Trk wrkr hrs
Tot. trn mls
Pass. trn mls
4.55E-09
0
0
0.2500
0.2500
0
0
0.0106
0.0106
0
0
100.00%
100.00%
0%
0%
D
N
N
Pass. jour
4.44E-11
0.0500
0.0500
0.1500
0.1500
100.00%
100.00%
D
HEN-07 - Passenger exposure to hazardous substances
HEN-07
PANIINSB-E
Passenger exposure to animal/insect bites
HEN-07
PHAZSSUB-E
Passenger exposure to hazardous substances leakage at station
HEN-07
PEXPTOX--E
Passenger exposure to toxic fumes
HEN-07
PHAZOSUB-E
Passenger exposure to hazardous substances leakage not at station
Pass. jour
Pass. jour
Pass. jour
Pass. jour
2.37E-09
5.93E-10
1.78E-10
0
3.533
2.667
0.6667
0.2000
0
0.0217
0.0164
0.0041
0.0012
0
100.00%
75.47%
18.87%
5.66%
0%
D
D
D
N
HEN-08 - Passenger exposed to electrical arcing at station
HEN-08
PSTAARC--E
Passenger exposed to electrical arcing at station
Pass. jour
1.78E-10
0.2000
0.2000
0.0022
0.0022
100.00%
100.00%
D
HEN-09 - Passenger electric shock at station (OHL)
HEN-09
PSHKSOHL-H
Passenger electric shock at station (OHL)
Pass. jour
5.93E-11
0.0667
0.0667
0.0667
0.0667
100.00%
100.00%
E
HEN-04 - Workforce exposure to lineside explosion
HEN-04
GTWEEXPLNE Track worker exposure to lineside explosion
HEN-04
GTDEEXPLNE Train crew (driver) exposure to lineside explosion
HEN-04
GTCEEXPLNE Train crew (other) exposure to lineside explosion
HEN-05 - Explosion at station
HEN-05
YLNSEXPL-E
Version 5.5/May 2008
Explosion at station
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
87
Table B
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
HEN-10 - Passenger electric shock at station (conductor rail)
HEN-10
PCONDST--H
Passenger electric shock at station (conductor rail)
Pass. jour
1.48E-09
1.667
1.667
0.5362
0.5362
100.00%
100.00%
D
HEN-11 - Passenger electric shock at station (non-traction supplies)
HEN-11
PSHKSNTS-H
Passenger electric shock at station (Non-traction supplies)
Pass. jour
5.93E-10
0.6667
0.6667
0.0041
0.0041
100.00%
100.00%
D
HEN-12 - Passenger at station exposed to smoke or fumes
HEN-12
PSTAFUMS-E
Passenger at station exposed to smoke or fumes
Pass. jour
4.44E-11
0.0500
0.0500
3.74E-04
3.74E-04
100.00%
100.00%
E
Hazardous Event
Number
Precursor code Cause precursor description
HEN-13 - Passenger fall from platform onto track (no train present)
HEN-13
PPNLFALL-H
Passenger under influence of alcohol/drugs falls from platform onto track (no
train present)
HEN-13
PPNGFALL-H
Passenger falls from platform onto track (no train present) - general causes
Pass. jour
1.88E-08
46.00
21.20
0.8095
0.3731
100.00%
46.08%
D
Pass. jour
1.18E-08
13.30
0.2341
28.92%
D
HEN-13
PPLTFILL-E
Pass. jour
6.22E-09
7.000
0.1232
15.22%
D
HEN-13
PPLTVIMP-E
Pass. jour
4.00E-09
4.500
0.0792
9.78%
D
1.90E-07
1.03E-07
9.99E-08
7.32E-08
4.68E-08
4.65E-08
4.53E-08
3.14E-08
1.03E-08
6.81E-09
5.04E-09
2664.8
740.8
214.0
116.0
112.3
82.33
52.67
52.33
50.91
35.33
11.60
7.667
5.667
23.73
6.446
1.862
1.009
0.9774
0.7164
0.4582
0.4553
0.4430
0.3074
0.1009
0.0667
0.0493
100.00%
27.16%
7.84%
4.25%
4.12%
3.02%
1.93%
1.92%
1.87%
1.30%
0.43%
0.28%
0.21%
D
D
D
D
D
D
D
D
D
D
D
Passenger falls from platform onto track (no train present) due to illness
(seizure, collapse, etc)
Passenger falls from platform onto track (no train present) due to visual
impairment
HEN-14 - Passenger slip, trip or fall
HEN-14A - Passenger slip, trip or fall (platform)
HEN-14A
PPLTSLNC-E
Passenger slip, trip or fall on platform no specific cause
HEN-14A
PPLTSLR--H
Passenger slip, trip or fall due to running on platform
HEN-14A
PPLTSLW--E
Passenger slip, trip or fall due to wet surface on platform
HEN-14A
PPLTSLU--E
Passenger slip, trip or fall due to uneven surface on platform
HEN-14A
PPLTSLO--E
Passenger slip, trip or fall due to object on platform
HEN-14A
PPLTILL--E
Passenger slip, trip or fall on platform due to ill health
HEN-14A
PPLTALC--E
Passenger slip, trip or fall on platform due to alcohol or drugs
HEN-14A
PPLTSLI--E
Passenger slip, trip or fall due to ice/snow on platform
HEN-14A
PPLTSLF--E
Passenger slip, trip or fall due to food on platform
HEN-14A
PPLTOVER-E
Passenger slip, trip or fall due to overcrowding on platform
HEN-14A
PPLTSBIR-E
Passenger slip, trip or fall due to bird droppings on platform
Version 5.5/May 2008
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
88
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-14B - Passenger slip, trip or fall (stairs)
HEN-14B
PSTRUNSPEE Passenger slip, trip or fall on stairs no specific cause
HEN-14B
PSTRRUN--E
Passenger slip, trip or fall due to running on stairs
HEN-14B
PSTRALC--E
Passenger slip, trip or fall on stairs due to alcohol or drugs
HEN-14B
PSTRWET--E
Passenger slip, trip or fall due to wet surface on stairs
HEN-14B
PSTRILL--E
Passenger slip, trip or fall on stairs due to ill health
HEN-14B
PSTRSURF-E
Passenger slip, trip or fall due to uneven surface on stairs
HEN-14B
PSTRCROWDE Passenger slip, trip or fall due to overcrowding on stairs
HEN-14B
PSTROBJ--E
Passenger slip, trip or fall due to object on stairs
HEN-14B
PSTRICE--E
Passenger slip, trip or fall due to ice/snow on stairs
HEN-14B
PSTRFOOD-E
Passenger slip, trip or fall due to food on stairs
HEN-14B
PSTRBIRD-E
Passenger slip, trip or fall due to bird droppings on stairs
HEN-14C - Passenger slip, trip or fall (escalator)
HEN-14C
PESCUNSPEE Passenger slip, trip or fall on escalator no specific cause
HEN-14C
PESCALC--E
Passenger slip, trip or fall on escalator due to alcohol or drugs
HEN-14C
PESCOBJ--E
Passenger slip, trip or fall due to object on escalator
HEN-14C
PESCILL--E
Passenger slip, trip or fall on escalator due to ill health
HEN-14C
PESCRUN--E
Passenger slip, trip or fall due to running on escalator
HEN-14C
PESCCROWDE Passenger slip, trip or fall due to overcrowding on escalator
HEN-14C
PESCSURF-E
Passenger slip, trip or fall due to uneven surface on escalator
HEN-14C
PESCWET--E
Passenger slip, trip or fall due to wet surface on escalator
HEN-14C
PESCFOOD-E
Passenger slip, trip or fall due to food on escalator
HEN-14C
PESCICE--E
Passenger slip, trip or fall due to ice/snow on escalator
HEN-14D - Passenger slip, trip or fall (station concourse)
HEN-14D
PCONWET--E
Passenger slip, trip or fall due to wet surface on station concourse (includes
waiting room)
HEN-14D
PCONUNSPEE Passenger slip, trip or fall on station concourse (includes waiting room) no
specific cause
HEN-14D
PCONSURF-E
Passenger slip, trip or fall due to uneven surface on station concourse
(includes waiting room)
HEN-14D
PCONALC--E
Passenger slip, trip or fall on station concourse (includes waiting room) due to
alcohol or drugs
HEN-14D
PCONOBJ--E
Passenger slip, trip or fall due to object on station concourse (includes waiting
room)
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
4.76E-07
1.10E-07
7.70E-08
5.36E-08
2.67E-08
1.07E-08
1.07E-08
1.01E-08
7.70E-09
2.96E-10
0
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
2.67E-07
8.03E-08
4.44E-08
2.76E-08
1.21E-08
4.44E-09
4.15E-09
1.96E-09
5.33E-10
1.78E-10
Pass. jour
1.14E-07
National
frequency
(events/ year)
880.7
536.0
123.3
86.67
60.33
30.00
12.00
12.00
11.33
8.667
0.3333
0
498.0
300.3
90.33
50.00
31.00
13.67
5.000
4.667
2.200
0.6000
0.2000
450.8
128.7
Pass. jour
9.69E-08
109.0
0.8785
3.70%
D
Pass. jour
4.96E-08
55.80
0.4497
1.90%
D
Pass. jour
3.56E-08
40.00
0.3224
1.36%
D
Pass. jour
3.11E-08
35.00
0.2821
1.19%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
10.27
6.249
1.438
1.010
0.7034
0.3498
0.1399
0.1399
0.1321
0.1010
0.0039
0
2.583
1.557
0.4685
0.2593
0.1608
0.0709
0.0259
0.0242
0.0114
0.0031
0.0010
3.633
1.037
Risk cont.
% of total
HE risk
43.27%
26.33%
6.06%
4.26%
2.96%
1.47%
0.59%
0.59%
0.56%
0.43%
0.02%
0%
10.88%
6.56%
1.97%
1.09%
0.68%
0.30%
0.11%
0.10%
0.05%
0.01%
0.00%
15.31%
4.37%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
N
D
D
D
D
D
D
D
D
D
D
D
89
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-14D
PCONFOOD-E Passenger slip, trip or fall due to food on station concourse (includes waiting
room)
HEN-14D
PCONRUN--E
Passenger slip, trip or fall due to running on station concourse (includes
waiting room)
HEN-14D
PCONILL--E
Passenger slip, trip or fall on station concourse (includes waiting room) due to
ill health
HEN-14D
PCONBIRD-E
Passenger slip, trip or fall due to bird droppings on station concourse
(includes waiting room)
HEN-14D
PCONICE--E
Passenger slip, trip or fall due to ice/snow on station concourse (includes
waiting room)
HEN-14D
PCONCROWDE Passenger slip, trip or fall due to overcrowding on station concourse (includes
waiting room)
HEN-14E - Passenger slip, trip or fall while legitimately crossing line on station crossing
HEN-14E
PPLTLINE-E
Passenger slip, trip or fall while legitimately crossing line on station crossing
HEN-14F - Passenger slip, trip or fall (chair, bench, wheelchair)
HEN-14F
PCHAUNSPEE Passenger slip, trip or fall from chairs, benches, wheelchairs etc. no specific
cause
HEN-14F
PCHADEF--E
Passenger slip, trip or fall from defective chairs, benches, etc. (due to
vandalism, poor maintenance etc)
HEN-14F
PCHAALC--E
Passenger slip, trip or fall from chairs, benches, wheelchairs etc. due to
alcohol
HEN-14F
PCHAILL--E
Passenger slip, trip or fall from chairs due to ill health
HEN-14F
PCHASURF-E
Passenger slip, trip or fall from chairs due to uneven surface
HEN-14F
PCHAWET--E
Passenger slip, trip or fall from chairs due to wet surface
HEN-14F
PCHAOBJ--E
Passenger slip, trip or fall from chairs, benches, wheelchairs etc. due to
object
HEN-14F
PCHACROWDE Passenger slip, trip or fall from chairs, benches, wheelchairs etc. due to
overcrowding
HEN-14F
PCHAFOOD-E Passenger slip, trip or fall from chairs, benches, wheelchairs etc. due to food
HEN-14F
PCHAICE--E
Version 5.5/May 2008
Passenger slip, trip or fall from chairs, benches, wheelchairs etc. due to
ice/snow
Normaliser
Pass. jour
National
frequency
(events/
normaliser)
2.16E-08
National
frequency
(events/ year)
24.33
Risk cont.
(FWI / year)
0.1961
Risk cont.
% of total
HE risk
0.83%
Deriv. of
prec. (D,
E, N)
D
Pass. jour
2.13E-08
24.00
0.1934
0.82%
D
Pass. jour
1.93E-08
21.67
0.1746
0.74%
D
Pass. jour
5.33E-09
6.000
0.0484
0.20%
D
Pass. jour
4.15E-09
4.667
0.0376
0.16%
D
Pass. jour
1.48E-09
1.667
0.0134
0.06%
D
Pass. jour
2.37E-09
2.667
2.667
0.0210
0.0210
0.09%
0.09%
D
Pass. jour
5.63E-09
19.81
6.333
0.1109
0.0355
0.47%
0.15%
D
Pass. jour
5.63E-09
6.333
0.0355
0.15%
D
Pass. jour
2.67E-09
3.000
0.0168
0.07%
D
Pass. jour
Pass. jour
Pass. jour
Pass. jour
1.78E-09
1.48E-09
2.96E-10
1.27E-10
2.000
1.667
0.3333
0.1429
0.0112
0.0093
0.0019
8.00E-04
0.05%
0.04%
0.01%
0.00%
D
D
D
D
Pass. jour
0
0
0
0%
N
Pass. jour
0
0
0
0%
N
Pass. jour
0
0
0
0%
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
90
Table B
Normaliser
National
frequency
(events/
normaliser)
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
2.04E-08
1.54E-08
1.51E-08
3.26E-09
2.96E-09
2.07E-09
1.78E-09
1.48E-09
1.48E-09
National
frequency
(events/ year)
72.00
23.00
17.33
17.00
3.667
3.333
2.333
2.000
1.667
1.667
HEN-15 - Passenger fall from overbridge at station
HEN-15
PPOVERB--H
Passenger fall from overbridge at station
Pass. jour
1.48E-09
1.667
1.667
0.2931
0.2931
100.00%
100.00%
D
HEN-16 - Passenger fall during evacuation at station
HEN-16
PEVCFALL-H
Passenger fall during evacuation at station
Pass. jour
4.44E-11
0.0500
0.0500
0.0027
0.0027
100.00%
100.00%
D
HEN-17 - Passenger crushing caused by overcrowding at station
HEN-17
POVRFALL-H
Passenger crushing caused by crowding at station
Pass. jour
8.89E-10
1.000
1.000
0.0270
0.0270
100.00%
100.00%
D
130.8
126.9
77.33
30.20
16.60
2.400
0.3333
3.956
3.956
2.097
2.074
1.264
0.4937
0.2714
0.0392
0.0054
0.0229
0.0229
100.00%
98.91%
60.29%
23.54%
12.94%
1.87%
0.26%
1.09%
1.09%
Hazardous Event
Number
Precursor code Cause precursor description
HEN-14G - Passenger slip, trip or fall (ramps)
HEN-14G
PRAMUNSPEE Passenger slip, trip or fall on ramps no specific cause
HEN-14G
PRAMRUN--E
Passenger slip, trip or fall due to running on ramps
HEN-14G
PRAMWET--E
Passenger slip, trip or fall due to wet surface on ramps
HEN-14G
PRAMALC--E
Passenger slip, trip or fall on ramps due to alcohol or drugs
HEN-14G
PRAMSURF-E
Passenger slip, trip or fall due to uneven surface on ramps
HEN-14G
PRAMILL--E
Passenger slip, trip or fall on ramps due to ill health
HEN-14G
PRAMICE--E
Passenger slip, trip or fall due to ice/snow on ramps
HEN-14G
PRAMOBJ--E
Passenger slip, trip or fall due to object on ramps
HEN-14G
PRAMFOOD-E Passenger slip, trip or fall due to food on ramps
HEN-21 - Workforce struck/crushed by structural collapse or large object
HEN-21A - Workforce struck/crushed by structural collapse or large object
HEN-21A
GTWCRAIL-E
Track worker struck/crushed by rail
HEN-21A
GTWSTSLE-E
Track worker struck/crushed by sleepers
HEN-21A
GTWSTMIS-E
Track worker struck/crushed by miscellaneous object
HEN-21A
GOWFSTMI-E
Other workforce struck/crushed by miscellaneous object
HEN-21A
GTCSTMIS-E
Train crew struck/crushed by miscellaneous object
HEN-21 OTP - Track worker struck by load dropped from OTP inside possession
HEN-21 OTP
GTWLODTYOE Track worker struck by load dropped from OTP inside possession
Version 5.5/May 2008
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Pass. jour
Pass. trn mls
1.41E-06
5.50E-07
3.02E-07
2.13E-09
1.19E-09
OTP hrs
1.96E-06
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.6700
0.2140
0.1613
0.1582
0.0341
0.0310
0.0217
0.0186
0.0155
0.0155
Risk cont.
% of total
HE risk
2.82%
0.90%
0.68%
0.67%
0.14%
0.13%
0.09%
0.08%
0.07%
0.07%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
91
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Normaliser
National
frequency
(events/
normaliser)
HEN-22 - Workforce trapped in machinery
HEN-22
GTWTRPMA-E Track worker trapped in machinery (others)
HEN-22
GTWTRPPT-E
Track worker trapped in points/point machines
HEN-22
GOWTRPMA-E Other workforce trapped in machinery
Trk wrkr hrs
Trk wrkr hrs
Pass. jour
6.48E-08
6.56E-08
7.11E-10
7.957
3.557
3.600
0.8000
0.2096
0.1164
0.0670
0.0262
100.00%
55.54%
31.96%
12.49%
D
D
D
HEN-23 - Workforce struck by/contact with/trapped in object at station
HEN-23
GOWTCHPA-E Other workforce trapped/crushed/hit at station
HEN-23
GTCTCHPA-E
Train crew (other) trapped/crushed/hit at station
HEN-23
GTDTCHPA-E
Train crew (driver) trapped/crushed/hit at station
HEN-23
GTWTCHPA-E Track worker trapped/crushed/hit at station
Pass. jour
Pass. trn mls
Tot. trn mls
Trk wrkr hrs
3.91E-07
1.84E-07
5.90E-08
2.00E-07
522.3
440.0
51.67
19.67
11.00
1.072
0.9027
0.1060
0.0403
0.0226
100.00%
84.24%
9.89%
3.77%
2.11%
D
D
D
D
5.33E-06
1.38E-06
7.56E-08
8.36E-08
9.91E-07
4.74E-07
4.62E-08
1.65E-07
2.73E-08
9.00E-08
2.34E-08
3.46E-07
2.40E-08
9.96E-08
4.92E-07
6.40E-08
1.21E-08
7.11E-09
8.30E-09
1.95E-09
5.57E-08
1150.9
1147.6
292.7
75.67
85.00
94.00
54.40
26.00
52.00
46.33
30.67
30.00
26.33
19.00
27.00
28.00
27.00
21.33
13.67
8.000
9.333
2.190
15.67
7.489
7.450
2.085
0.6890
0.4014
0.3997
0.3501
0.2521
0.2455
0.2188
0.2184
0.2137
0.1695
0.1415
0.1275
0.1190
0.1148
0.1007
0.0973
0.0890
0.0850
0.0810
0.0792
100.00%
99.48%
27.83%
9.20%
5.36%
5.34%
4.68%
3.37%
3.28%
2.92%
2.92%
2.85%
2.26%
1.89%
1.70%
1.59%
1.53%
1.35%
1.30%
1.19%
1.13%
1.08%
1.06%
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
HEN-24 - Workforce slip, trip or fall <2m
HEN-24A - Workforce (other than OTP train crew) slip, trip or fall <2m
HEN-24A
GTW<2TRK-E
Track worker slip, trip or fall (<2m) on track or about track
HEN-24A
GTW<2LMC-E
Track worker slip, trip or fall (<2m) while lifting, moving, carrying
HEN-24A
GOW<2PLT-E
Other workforce slip, trip or fall (<2m) on platform
HEN-24A
GOW<2STP-E
Other workforce slip, trip or fall (<2m) on stairs/steps
HEN-24A
GTW<2OBJ-E
Track worker slip, trip or fall (<2m) over object
HEN-24A
GTW<2VEH-E
Track worker slip, trip or fall (<2m) from vehicle
HEN-24A
GOW<2CON-E Other workforce slip, trip or fall (<2m) in station concourse etc
HEN-24A
GTC<2PLT-E
Train crew (other) slip, trip or fall (<2m) on platform
HEN-24A
GOW<2TRK-E Other workforce slip, trip or fall (<2m) on track or about track
HEN-24A
GTD<2TRK-E
Train crew (driver) slip, trip or fall (<2m) on track or about track
HEN-24A
GOW<2OBJ-E
Other workforce slip, trip or fall (<2m) over object
HEN-24A
GTW<2SLS-E
Track worker slip, trip or fall (<2m) on sloping surfaces
HEN-24A
GOW<2SIG-E
Other workforce slip, trip or fall (<2m) in signal box
HEN-24A
GTC<2STP-E
Train crew (other) slip, trip or fall (<2m) on stairs/steps
HEN-24A
GTW<2STP-E
Track worker slip, trip or fall (<2m) on stairs/steps
HEN-24A
GTD<2PLT-E
Train crew (driver) slip, trip or fall (<2m) on platform
HEN-24A
GOW<2CRS-E Other workforce slip, trip or fall (<2m) on walkway or crossing
HEN-24A
GOW<2GEN-E Other workforce slip, trip or fall (<2m): unclassifiable
HEN-24A
GOW<2LMC-E Other workforce slip, trip or fall (<2m) while lifting, moving, carrying
HEN-24A
GOW<2ILL-E
Other workforce slip, trip or fall (<2m) due to ill health
HEN-24A
GTC<2ICE-E
Train crew (other) slip, trip or fall (<2m) on ice/snow
Version 5.5/May 2008
Trk wrkr hrs
Trk wrkr hrs
Pass. jour
Pass. jour
Trk wrkr hrs
Trk wrkr hrs
Pass. jour
Pass. trn mls
Pass. jour
Tot. trn mls
Pass. jour
Trk wrkr hrs
Pass. jour
Pass. trn mls
Trk wrkr hrs
Tot. trn mls
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. trn mls
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
92
Table B
Hazardous Event
Number
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
HEN-24A
Precursor code
GTW<2ICE-E
GOW<2SLS-E
GTW<2CRS-E
GOW<2VEH-E
GTD<2STP-E
GOW<2ICE-E
GOW<2LAD-H
GTW<2ILL-E
GTD<2CRS-E
GTW<2POL-E
GTC<2CON-E
GTW<2GEN-E
GTC<2OBJ-E
GTD<2OBJ-E
GTW<2LAD-H
GTC<2ILL-E
GTD<2ICE-E
GTD<2ILL-E
GTC<2SLS-E
GOW<2ESC-E
GOW<2POL-E
GTD<2SLS-E
GTW<2BRG-E
GTC<2TRK-E
GTW<2PLT-E
GTD<2CON-E
GTC<2LMC-E
GTD<2POL-E
GOW<2BRG-E
GTC<2CRS-E
GTC<2GEN-E
GTC<2POL-E
GTC<2VEH-E
Version 5.5/May 2008
Cause precursor description
Track worker slip, trip or fall (<2m) on ice/snow
Other workforce slip, trip or fall (<2m) on sloping surfaces
Track worker slip, trip or fall (<2m) on walkway or crossing
Other workforce slip, trip or fall (<2m) from vehicle
Train crew (driver) slip, trip or fall (<2m) on stairs/steps
Other workforce slip, trip or fall (<2m) on ice/snow
Other workforce slip, trip or fall (<2m) from ladder
Track worker slip, trip or fall (<2m) due to ill health
Train crew (driver) slip, trip or fall (<2m) on walkway or crossing
Track worker slip, trip or fall (<2m) from platform onto the line
Train crew (other) slip, trip or fall (<2m) in station concourse etc
Track worker slip, trip or fall (<2m): unclassifiable
Train crew (other) slip, trip or fall (<2m) over object
Train crew (driver) slip, trip or fall (<2m) over object
Track worker slip, trip or fall (<2m) from ladder
Train crew (other) slip, trip or fall (<2m) due to ill health
Train crew (driver) slip, trip or fall (<2m) on ice/snow
Train crew (driver) slip, trip or fall (<2m) due to ill health
Train crew (other) slip, trip or fall (<2m) on sloping surfaces
Other workforce slip, trip or fall (<2m) on escalator
Other workforce slip, trip or fall (<2m) from platform onto the line
Train crew (driver) slip, trip or fall (<2m) on sloping surfaces
Track worker slip, trip or fall (<2m) on bridge
Train crew (other) slip, trip or fall (<2m) on track or about track
Track worker slip, trip or fall (<2m) on platform
Train crew (driver) slip, trip or fall (<2m) in station concourse etc
Train crew (other) slip, trip or fall (<2m) while lifting, moving, carrying
Train crew (driver) slip, trip or fall (<2m) from platform onto the line
Other workforce slip, trip or fall (<2m) on bridge
Train crew (other) slip, trip or fall (<2m) on walkway or crossing
Train crew (other) slip, trip or fall (<2m): unclassifiable
Train crew (other) slip, trip or fall (<2m) from platform onto the line
Train crew (other) slip, trip or fall (<2m) from vehicle
Normaliser
Trk wrkr hrs
Pass. jour
Trk wrkr hrs
Pass. jour
Tot. trn mls
Pass. jour
Pass. jour
Trk wrkr hrs
Tot. trn mls
Trk wrkr hrs
Pass. trn mls
Trk wrkr hrs
Pass. trn mls
Tot. trn mls
Trk wrkr hrs
Pass. trn mls
Tot. trn mls
Tot. trn mls
Pass. trn mls
Pass. jour
Pass. jour
Tot. trn mls
Trk wrkr hrs
Pass. trn mls
Trk wrkr hrs
Tot. trn mls
Pass. trn mls
Tot. trn mls
Pass. jour
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
National
frequency
(events/
normaliser)
2.51E-07
8.30E-09
1.64E-07
5.63E-09
4.30E-08
1.04E-08
5.33E-09
2.64E-08
2.00E-08
5.46E-08
3.32E-08
6.07E-08
2.02E-08
1.60E-08
6.68E-08
3.06E-09
1.86E-08
2.46E-09
1.30E-08
5.33E-09
1.48E-09
9.00E-09
8.50E-08
1.07E-08
7.29E-08
1.10E-08
5.93E-09
3.00E-09
2.67E-09
5.93E-09
3.56E-09
2.37E-09
3.56E-09
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
13.80
9.333
9.000
6.333
14.33
11.67
6.000
1.450
6.667
3.000
9.333
3.333
5.667
5.333
3.667
0.8600
6.200
0.8200
3.667
6.000
1.667
3.000
4.667
3.000
4.000
3.667
1.667
1.000
3.000
1.667
1.000
0.6667
1.000
Risk cont.
(FWI / year)
0.0698
0.0695
0.0641
0.0614
0.0609
0.0590
0.0541
0.0536
0.0475
0.0444
0.0441
0.0371
0.0365
0.0343
0.0331
0.0318
0.0313
0.0303
0.0273
0.0255
0.0246
0.0223
0.0220
0.0214
0.0189
0.0173
0.0152
0.0148
0.0142
0.0119
0.0111
0.0099
0.0097
Risk cont.
% of total
HE risk
0.93%
0.93%
0.86%
0.82%
0.81%
0.79%
0.72%
0.72%
0.63%
0.59%
0.59%
0.50%
0.49%
0.46%
0.44%
0.42%
0.42%
0.40%
0.36%
0.34%
0.33%
0.30%
0.29%
0.29%
0.25%
0.23%
0.20%
0.20%
0.19%
0.16%
0.15%
0.13%
0.13%
Deriv. of
prec. (D,
E, N)
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
D
D
D
D
D
93
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-24A
GTD<2LMC-E
Train crew (driver) slip, trip or fall (<2m) while lifting, moving, carrying
HEN-24A
GTW<2SIG-E
Track worker slip, trip or fall (<2m) in signal box
HEN-24A
GTD<2GEN-E
Train crew (driver) slip, trip or fall (<2m): unclassifiable
HEN-24A
GTC<2ESC-E
Train crew (other) slip, trip or fall (<2m) on escalator
HEN-24A
GTD<2VEH-E
Train crew (driver) slip, trip or fall (<2m) from vehicle
HEN-24A
GTD<2ESC-E
Train crew (driver) slip, trip or fall (<2m) on escalator
HEN-24A
GTD<2BRG-E
Train crew (driver) slip, trip or fall (<2m) on bridge
HEN-24A
GTW<2CON-E Track worker slip, trip or fall (<2m) in station concourse etc
HEN-24A
GTC<2BRG-E
Train crew (other) slip, trip or fall (<2m) on bridge
HEN-24A
GTD<2SIG-E
Train crew (driver) slip, trip or fall (<2m) in signal box
HEN-24A
GTD<2LAD-H
Train crew (driver) slip, trip or fall (<2m) from ladder
HEN-24A
GTC<2SIG-E
Train crew (other) slip, trip or fall (<2m) in signal box
HEN-24A
GTC<2LAD-H
Train crew (other) slip, trip or fall (<2m) from ladder
HEN-24A
GTW<2ESC-E
Track worker slip, trip or fall (<2m) on escalator
HEN-24 OTP - Workforce (OTP train crew) slip, trip or fall <2m inside possession
HEN-24 OTP
GTC<2TRKPE
Train crew (other) slip, trip or fall (<2m) on track, related to OTP movement
inside possession
HEN-24 OTP
GTD<2TRKPE
Train crew (driver) slip, trip or fall (<2m) on track, related to OTP movement
inside possession
Normaliser
Tot. trn mls
Trk wrkr hrs
Tot. trn mls
Pass. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
Trk wrkr hrs
Pass. trn mls
Tot. trn mls
Tot. trn mls
Pass. trn mls
Pass. trn mls
Trk wrkr hrs
National
frequency
(events/
normaliser)
3.00E-09
3.04E-08
2.00E-09
5.93E-09
2.00E-09
1.20E-09
6.00E-10
3.64E-09
7.12E-10
6.00E-10
0
0
0
0
OTP hrs
9.92E-07
National
frequency
(events/ year)
1.000
1.667
0.6667
1.667
0.6667
0.4000
0.2000
0.2000
0.2000
0.2000
0
0
0
0
3.333
2.000
OTP hrs
6.61E-07
1.333
0.0156
0.21%
D
0.7507
0.7440
0.1898
0.1424
0.0475
0.0475
0.0449
0.0449
100.00%
99.10%
25.29%
18.97%
6.32%
6.32%
5.99%
5.99%
D
D
D
D
D
D
0.0337
0.0337
0.0337
0.0202
4.49%
4.49%
4.49%
2.69%
D
D
D
D
HEN-25 - Workforce slip, trip or fall >2m
HEN-25A - Workforce (other than OTP train crew) slip, trip or fall >2m
HEN-25A
GTW>2EMB-E Track worker slip, trip or fall (>2m) on embankment/wall/hill/cliff
HEN-25A
GTW>2HOL-E
Track worker slip, trip or fall (>2m) into hole/ pit
HEN-25A
GTW>2BRG-E Track worker slip, trip or fall (>2m) from bridge
HEN-25A
GTW>2CRN-E Track worker slip, trip or fall (>2m) from crane
HEN-25A
GOW>2STP-E
Other workforce slip, trip or fall (>2m) on stairs/steps
HEN-25A
GTW>2SCF-E
Track worker slip, trip or fall (>2m) from scaffold or temporary structure
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Pass. jour
Trk wrkr hrs
4.86E-08
3.64E-08
1.21E-08
1.21E-08
1.19E-09
2.43E-08
14.93
14.73
2.667
2.000
0.6667
0.6667
1.333
1.333
HEN-25A
HEN-25A
HEN-25A
HEN-25A
Trk wrkr hrs
Pass. jour
Trk wrkr hrs
Pass. jour
1.82E-08
8.89E-10
1.82E-08
5.33E-10
1.000
1.000
1.000
0.6000
GTW>2VEH-E
GOW>2LAD-H
GTW>2LAD-H
GOW>2ROF-E
Version 5.5/May 2008
Track worker slip, trip or fall (>2m) from vehicle
Other workforce slip, trip or fall (>2m) from ladder
Track worker slip, trip or fall (>2m) from ladder
Other workforce slip, trip or fall (>2m) from roof/structure
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.0091
0.0079
0.0074
0.0071
0.0065
0.0017
9.44E-04
9.44E-04
9.44E-04
9.44E-04
0
0
0
0
0.0390
0.0234
Risk cont.
% of total
HE risk
0.12%
0.11%
0.10%
0.09%
0.09%
0.02%
0.01%
0.01%
0.01%
0.01%
0%
0%
0%
0%
0.52%
0.31%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
N
N
N
N
D
94
Table B
Normaliser
Tot. trn mls
Pass. jour
Pass. jour
Pass. jour
National
frequency
(events/
normaliser)
6.00E-10
1.78E-10
1.78E-10
3.56E-10
National
frequency
(events/ year)
0.2000
0.2000
0.2000
0.4000
Risk cont.
(FWI / year)
0.0142
0.0142
0.0142
0.0135
Risk cont.
% of total
HE risk
1.90%
1.90%
1.90%
1.80%
Deriv. of
prec. (D,
E, N)
D
D
D
D
Hazardous Event
Number
HEN-25A
HEN-25A
HEN-25A
HEN-25A
Precursor code
GTD>2EMB-E
GOW>2EMB-E
GOW>2HOL-E
GOW>2SCF-E
Cause precursor description
Train crew (driver) slip, trip or fall (>2m) on embankment/wall/hill/cliff
Other workforce slip, trip or fall (>2m) on embankment/wall/hill/cliff
Other workforce slip, trip or fall (>2m) into hole/pit
Other workforce slip, trip or fall (>2m) from scaffold or temporary structure
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
HEN-25A
GTC>2STP-E
GOW>2GEN-E
GTW>2ROF-E
GTW>2GEN-E
GTW>2STP-E
GTC>2EMB-E
GOW>2BRG-E
GOW>2CRN-E
GTD>2GEN-E
GTC>2GEN-E
GTC>2LAD-H
GTW>2ESC-E
GTC>2HOL-E
GTC>2ESC-E
GTD>2STP-E
GTC>2ROF-E
GTD>2LAD-H
GTD>2ESC-E
GTC>2CRN-E
GTC>2BRG-E
GTD>2SCF-E
Train crew (other) slip, trip or fall (>2m) on stairs/steps
Other workforce slip, trip or fall (>2m): unclassifiable
Track worker slip, trip or fall (>2m) from roof/ structure
Track worker slip, trip or fall (>2m): unclassifiable
Track worker slip, trip or fall (>2m) on stairs/steps
Train crew (other) slip, trip or fall (>2m) on embankment/wall/hill/cliff
Other workforce slip, trip or fall (>2m) from bridge
Other workforce slip, trip or fall (>2m) from crane
Train crew (driver) slip, trip or fall (>2m): unclassifiable
Train crew (other) slip, trip or fall (>2m): unclassifiable
Train crew (other) slip, trip or fall (>2m) from ladder
Track worker slip, trip or fall (>2m) on escalator
Train crew (other) slip, trip or fall (>2m) into hole/ pit
Train crew (other) slip, trip or fall (>2m) on escalator
Train crew (driver) slip, trip or fall (>2m) on stairs/steps
Train crew (other) slip, trip or fall (>2m) from roof/structure
Train crew (driver) slip, trip or fall (>2m) from ladder
Train crew (driver) slip, trip or fall (>2m) on escalator
Train crew (other) slip, trip or fall (>2m) from crane
Train crew (other) slip, trip or fall (>2m) from bridge
Train crew (driver) slip, trip or fall (>2m) from scaffold or temporary structure
Pass. trn mls
Pass. jour
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Pass. trn mls
Pass. jour
Pass. jour
Tot. trn mls
Pass. trn mls
Pass. trn mls
Trk wrkr hrs
Pass. trn mls
Pass. trn mls
Tot. trn mls
Pass. trn mls
Tot. trn mls
Tot. trn mls
Pass. trn mls
Pass. trn mls
Tot. trn mls
1.42E-09
2.96E-10
6.07E-09
3.64E-09
3.64E-09
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4000
0.3333
0.3333
0.2000
0.2000
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.0135
0.0112
0.0112
0.0067
0.0067
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1.80%
1.50%
1.50%
0.90%
0.90%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
D
D
D
D
D
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
HEN-25A
GTC>2SCF-E
Train crew (other) slip, trip or fall (>2m) from scaffold or temporary structure
Pass. trn mls
0
0
0
0%
N
HEN-25A
HEN-25A
HEN-25A
GOW>2ESC-E
GOW>2VEH-E
GTC>2VEH-E
Other workforce slip, trip or fall (>2m) on escalator
Other workforce slip, trip or fall (>2m) from vehicle
Train crew (other) slip, trip or fall (>2m) from vehicle
Pass. jour
Pass. jour
Pass. trn mls
0
0
0
0
0
0
0
0
0
0%
0%
0%
N
N
N
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
95
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-25 OTP - Workforce (OTP train crew) slip, trip or fall >2m inside possession
HEN-25 OTP
GTD>2VEHPE Train crew (driver) slip, trip or fall (>2m) from vehicle inside possession
HEN-25 OTP
GTC>2VEHPE
Train crew (other) slip, trip or fall (>2m) from vehicle inside possession
HEN-26 - Workforce struck/crushed by non-train vehicle
HEN-26
GTWSTNTV-E
Track worker struck/crushed by non-train vehicle
HEN-26
GOWSTNTV-E Other workforce struck/crushed by non-train vehicle
HEN-26
GTCSTNTV-E
Train crew (other) struck/crushed by non-train vehicle
HEN-26
GTDSTNTV-E
Train crew (driver) struck/crushed by non-train vehicle
HEN-27 - Workforce burns due to welding etc
HEN-27A - Workforce burn due to electrical short circuit
HEN-27A
GOWBURNE-H Other workforce burn due to electrical short circuit
HEN-27A
GTWBURNE-H Track worker burn due to electrical short circuit
HEN-27A
GTCBURNE-H Train crew (other) burn due to electrical short circuit
HEN-27A
GTDBURNE-H Train crew (driver) burn due to electrical short circuit
HEN-27B - Workforce burn due to welding or flame cutting
HEN-27B
GTWBURNW-H Track worker burn due to welding or flame cutting
HEN-27B
GOWBURNW-H Other workforce burn due to welding or flame cutting
HEN-27B
GTCBURNW-H Train crew (other) burn due to welding or flame cutting
HEN-27B
GTDBURNW-H Train crew (driver) burn due to welding or flame cutting
HEN-27C - Workforce burn due to other causes
HEN-27C
GOWBURNO-E Other workforce burn due to other causes
HEN-27C
GTWBURNO-E Track worker burn due to other causes
HEN-27C
GTCBURNO-E Train crew (other) burn due to other causes
HEN-27C
GTDBURNO-E Train crew (driver) burn due to other causes
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
OTP hrs
4.96E-08
National
frequency
(events/ year)
0.2000
0.1000
OTP hrs
4.96E-08
0.1000
0.0034
0.45%
D
Trk wrkr hrs
Pass. jour
Pass. trn mls
Tot. trn mls
1.64E-07
3.91E-09
4.27E-09
1.80E-09
15.20
9.000
4.400
1.200
0.6000
0.3376
0.3099
0.0247
0.0020
9.87E-04
100.00%
91.81%
7.32%
0.58%
0.29%
D
D
D
D
35.26
0.8571
0.4286
0.4286
0
0
11.60
11.00
0.6000
0
0
22.80
10.33
9.000
1.800
1.667
0.0945
0.0023
0.0011
0.0011
0
0
0.0311
0.0295
0.0016
0
0
0.0611
0.0277
0.0241
0.0048
0.0045
100.00%
2.43%
1.22%
1.22%
0%
0%
32.90%
31.20%
1.70%
0%
0%
64.67%
29.31%
25.53%
5.11%
4.73%
Pass. jour
Trk wrkr hrs
Pass. trn mls
Tot. trn mls
3.81E-10
7.81E-09
0
0
Trk wrkr hrs
Pass. jour
Pass. trn mls
Tot. trn mls
2.00E-07
5.33E-10
0
0
Pass. jour
Trk wrkr hrs
Pass. trn mls
Tot. trn mls
9.19E-09
1.64E-07
6.40E-09
5.00E-09
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.0067
0.0034
Risk cont.
% of total
HE risk
0.90%
0.45%
Deriv. of
prec. (D,
E, N)
E
D
N
N
N
D
D
N
N
D
D
D
D
96
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-28 - Workforce exposure to arcing
HEN-28A - Workforce burn due to/exposure to arcing (conductor rail)
HEN-28A
GTWARCCO-E Track worker burn due to/exposure to arcing: conductor rail
HEN-28A
GOWARCCO-E Other workforce burn due to/exposure to arcing: conductor rail
HEN-28A
GTDARCCO-E Train crew (driver) burn due to/exposure to arcing: conductor rail
HEN-28A
GTCARCCO-E Train crew (other) burn due to/exposure to arcing: conductor rail
HEN-28B - Workforce burn due to/exposure to arcing (OHL)
HEN-28B
GTDARCOH-E Train crew (driver) exposure to arcing: OHL
HEN-28B
GTWARCOH-E Track worker exposure to arcing - OHL
HEN-28B
GTCARCOH-E Train crew (other) exposure to arcing: OHL
HEN-28B
GOWARCOH-E Other workforce exposure to arcing: OHL
HEN-28C - Workforce burn due to/exposure to arcing (other)
HEN-28C
GTWARCOT-E Track worker exposure to arcing: other causes
HEN-28C
GTCARCOT-E
Train crew (other) exposure to arcing: other causes
HEN-28C
GTDARCOT-E
Train crew (driver) exposure to arcing: other causes
HEN-29 - Workforce exposure to hazardous substances (including stings, bites and needle injuries)
HEN-29
GTWEXHAZ-E Track worker exposure to hazardous substances including insect and animal
bites, needle stick injuries
HEN-29
GOWEXHAZ-E Other workforce exposure to hazardous substances including insect and
animal bites, needle stick injuries
HEN-29
GTCEXHAZ-E
Train crew (other) exposure to hazardous substances including insect and
animal bites, needle stick injuries
HEN-29
GTDREXHAZ-E Train crew (driver) exposure to hazardous substances including insect and
animal bites, needle stick injuries
HEN-30 - Workforce electric shock (conductor rail)
HEN-30A - Workforce (other than OTP workforce) electric shock (conductor rail) due to fall
HEN-30A
GTWFACON-H Track worker electric shock: contact with conductor rail due to fall
HEN-30A
GTDFACON-H Train crew (driver) electric shock: contact with conductor rail due to fall
HEN-30A
GOWFACON-H
Version 5.5/May 2008
Other workforce electric shock: contact with conductor rail due to fall
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
0.0814
0.0595
0.0470
0.0063
0.0052
0.0010
0.0125
0.0094
0.0031
0
0
0.0094
0.0094
0
0
100.00%
73.08%
57.69%
7.69%
6.41%
1.28%
15.38%
11.54%
3.85%
0%
0%
11.54%
11.54%
0%
0%
Deriv. of
prec. (D,
E, N)
Trk wrkr hrs
Pass. jour
Tot. trn mls
Pass. trn mls
9.11E-08
5.93E-10
1.67E-09
3.95E-10
Tot. trn mls
Trk wrkr hrs
Pass. trn mls
Pass. jour
3.00E-09
6.07E-09
0
0
Trk wrkr hrs
Pass. trn mls
Tot. trn mls
1.82E-08
0
0
8.667
6.333
5.000
0.6667
0.5556
0.1111
1.333
1.000
0.3333
0
0
1.000
1.000
0
0
Trk wrkr hrs
7.41E-07
81.27
40.67
0.2442
0.1222
100.00%
50.04%
D
Pass. jour
2.93E-08
33.00
0.0992
40.61%
D
Pass. trn mls
1.64E-08
4.600
0.0138
5.66%
D
Tot. trn mls
9.00E-09
3.000
0.0090
3.69%
D
Trk wrkr hrs
Tot. trn mls
2.43E-08
1.50E-10
8.007
1.383
1.333
0.0500
0.7155
0.4666
0.4497
0.0169
100.00%
65.21%
62.85%
2.36%
D
D
Pass. jour
0
0
0
0%
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
D
D
D
D
D
N
N
D
N
N
97
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-30B - Workforce (other than OTP workforce) electric shock (conductor rail) via item/object
HEN-30B
GTWITCON-H
Track worker electric shock: contact with conductor rail via item/object
Normaliser
National
frequency
(events/
normaliser)
Trk wrkr hrs
HEN-30B
GTDITCON-H
Train crew (driver) electric shock: contact with conductor rail via item/object
HEN-30B
GOWITCON-H
Other workforce electric shock: contact with conductor rail via item/object
HEN-30 OTP - OTP workforce electric shock (conductor rail) due to movement of OTP inside possession
HEN-30 OTP
GTCIPCON-H
Train crew (other) electric shock: contact with conductor rail due to movement
of OTP inside possession
HEN-30 OTP
GTWIPCON-H
Track worker electric shock: contact with conductor rail due to movement of
OTP inside possession
HEN-30 OTP
GTDIPCON-H
Train crew (driver) electric shock: contact with conductor rail due to
movement of OTP inside possession
Risk cont.
(FWI / year)
0.2186
0.1785
Risk cont.
% of total
HE risk
30.55%
24.94%
Deriv. of
prec. (D,
E, N)
9.71E-08
National
frequency
(events/ year)
6.533
5.333
Tot. trn mls
3.00E-09
1.000
0.0335
4.68%
D
Pass. jour
1.78E-10
0.2000
0.0067
0.94%
D
OTP hrs
1.49E-08
0.0900
0.0300
0.0304
0.0101
4.24%
1.41%
E
OTP hrs
1.49E-08
0.0300
0.0101
1.41%
E
OTP hrs
1.49E-08
0.0300
0.0101
1.41%
E
0.3835
0.2464
0.2375
100.00%
64.25%
61.93%
D
D
HEN-31 - Workforce electric shock (OHL)
HEN-31A - Workforce (other than OTP workforce) electric shock (OHL) (direct contact)
HEN-31A
GTWISOHL-H
Track worker electric shock: contact with OHL due to incorrect isolation
Trk wrkr hrs
2.43E-08
2.807
1.383
1.333
HEN-31A
GTDISOHL-H
Train crew (driver) electric shock: contact with OHL due to incorrect isolation
Tot. trn mls
1.50E-10
0.0500
0.0089
2.32%
D
HEN-31A
GOWISOHL-H
Other workforce electric shock: contact with OHL due to incorrect isolation
Pass. jour
0
0
0
0%
N
HEN-31A
GTCISOHL-H
Train crew (other) electric shock: contact with OHL due to incorrect isolation
Pass. trn mls
0
0
0
0%
N
Trk wrkr hrs
Tot. trn mls
Pass. jour
Pass. trn mls
1.82E-08
1.00E-09
0
0
1.333
1.000
0.3333
0
0
0.1211
0.0908
0.0303
0
0
31.57%
23.68%
7.89%
0%
0%
D
D
N
N
HEN-31B - Workforce (other than OTP workforce) electric shock (OHL) (indirect contact)
HEN-31B
GTWITOHL-H
Track worker electric shock: contact with OHL via item/object
HEN-31B
GTDITOHL-H
Train crew (driver) electric shock: contact with OHL via item/object
HEN-31B
GOWITOHL-H
Other workforce electric shock: contact with OHL via item/object
HEN-31B
GTCITOHL-H
Train crew (other) electric shock: contact with OHL via item/object
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
98
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-31 OTP - OTP Workforce electric shock (OHL) (contact with OHL inside possession)
HEN-31 OTP
GOWIPOHL-H
Train crew (other) electric shock: contact with OHL inside possession
HEN-31 OTP
GTDIPOHL-H
Train crew (driver) electric shock: contact with OHL inside possession
Normaliser
National
frequency
(events/
normaliser)
OTP hrs
2.79E-08
National
frequency
(events/ year)
0.0900
0.0563
OTP hrs
1.67E-08
0.0338
0.0060
1.57%
E
8.59E-09
6.07E-08
1.20E-09
0
0.1341
0.1211
0.0873
0.0301
0.0036
0
0.0130
0.0065
100.00%
90.27%
65.12%
22.46%
2.69%
0%
9.73%
4.86%
D
D
D
N
6.69E-08
13.67
13.40
9.667
3.333
0.4000
0
0.2700
0.1350
6.69E-08
0.1350
0.0065
4.86%
E
0.1029
0.0468
0.0468
0.0011
0.0011
0.0550
0.0550
100.00%
45.51%
45.51%
1.02%
1.02%
53.47%
53.47%
0.1780
0.1562
0.0781
0.0781
0
0
100.00%
87.76%
43.88%
43.88%
0%
0%
HEN-32 - Workforce electric shock (non-traction supply)
HEN-32A - Workforce (other than OTP workforce) electric shock (non-traction supply)
HEN-32A
GOWESNTS-H Other workforce electric shock (non-traction supply)
Pass. jour
HEN-32A
GTWESNTS-H Track worker electric shock (non-traction supply)
Trk wrkr hrs
HEN-32A
GTDESNTS-H
Train crew (driver) electric shock (non-traction supply)
Tot. trn mls
HEN-32A
GTCESNTS-H
Train crew (other) electric shock (non-traction supply)
Pass. trn mls
HEN-32 OTP - OTP workforce electric shock (non-traction supply) due to OTP contact with buried services inside possession
HEN-32 OTP
GTDESNTBSH Train crew (driver) electric shock due to OTP contact with buried services
OTP hrs
inside possession
HEN-32 OTP
GTCESNTBSH Train crew (other) electric shock due to OTP contact with buried services
OTP hrs
inside possession
HEN-33 - Workforce asphyxiation / drowning
HEN-33A - Workforce asphyxiation in tunnel
HEN-33A
GTWASPHY-E Track worker asphyxiation in tunnel
HEN-33B - Workforce asphyxiation at station
HEN-33B
GTWASPHS-E Track worker asphyxiation at station
HEN-33C - Workforce asphyxiation (drowning)
HEN-33C
GTWDROWN-E Track worker drowning
HEN-35 - Workforce involved in road traffic accident whilst on duty
HEN-35A - Workforce (other than OTP workforce) involved in road traffic accident while on duty
HEN-35A
GTWRTA---H
Track worker involved in road traffic accident
HEN-35A
GOWRTA---H
Other workforce involved in road traffic accident
HEN-35A
GTCRTA---H
Train crew(other) involved in road traffic accident
HEN-35A
GTDRTA---H
Train crew(driver) involved in road traffic accident
Version 5.5/May 2008
Trk wrkr hrs
1.55E-09
Trk wrkr hrs
1.55E-09
Trk wrkr hrs
1.82E-09
0.2702
0.0851
0.0851
0.0851
0.0851
0.1000
0.1000
1.18E-08
5.73E-10
0
0
1.470
1.290
0.6452
0.6452
0
0
Trk wrkr hrs
Pass. jour
Pass. trn mls
Tot. trn mls
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
Risk cont.
(FWI / year)
0.0160
0.0100
Risk cont.
% of total
HE risk
4.18%
2.61%
Deriv. of
prec. (D,
E, N)
E
D
D
D
E
D
D
N
N
99
Table B
Normaliser
National
frequency
(events/
normaliser)
OTP hrs
4.46E-08
National
frequency
(events/ year)
0.1800
0.0900
OTP hrs
4.46E-08
0.0900
0.0109
6.12%
D
HEN-36 - Adult trespasser fall while on the mainline railway
HEN-36
KTRSFALL-H
Adult trespasser fall while on the mainline railway
Trk mts
6.66E-07
20.67
20.67
1.246
1.246
100.00%
100.00%
D
HEN-37 - Adult trespasser electric shock (OHL)
HEN-37
KTRSOHLN-H
Adult trespasser electric shock: contact with OHL not in station
HEN-37
KTRSOHLS-H
Adult trespasser electric shock: contact with OHL in station
Trk mts
Trk mts
4.83E-08
9.20E-09
1.786
1.500
0.2857
0.7835
0.6581
0.1254
100.00%
84.00%
16.00%
D
D
5.501
2.836
2.836
2.665
2.665
100.00%
51.55%
51.55%
48.45%
48.45%
D
Hazardous Event
Number
Precursor code Cause precursor description
HEN-35 OTP - OTP workforce involved in road traffic accident between OTP and another road vehicle
HEN-35 OTP
GTCRTAOTPH Train crew (other) involved in road accident between OTP and another road
vehicle
HEN-35 OTP
GTDRTAOTPH Train crew (driver) involved in road accident between OTP and another road
vehicle
Risk cont.
(FWI / year)
0.0218
0.0109
Risk cont.
% of total
HE risk
12.24%
6.12%
Deriv. of
prec. (D,
E, N)
D
HEN-38 - Adult trespasser electric shock (conductor rail)
HEN-38A - Adult trespasser electric shock (conductor rail) at station
HEN-38A
KTRSCONS-H
Adult trespasser electric shock: contact with conductor rail at station
HEN-38B - Adult trespasser electric shock (conductor rail) not at station
HEN-38B
KTRSCONN-H Adult trespasser electric shock: contact with conductor rail not at station
Trk mts
1.42E-07
Trk mts
1.29E-07
8.400
4.400
4.400
4.000
4.000
HEN-39 - Adult trespasser electric shock (non-traction supply)
HEN-39
KTRSNTSS-H
Adult trespasser electric shock: contact with non-traction supplies in station
Trk mts
2.39E-09
0.0741
0.0741
4.59E-04
4.59E-04
100.00%
100.00%
D
HEN-39
Trk mts
0
0
0
0%
N
Trk mts
5.38E-08
1.670
1.670
0.0459
0.0459
100.00%
100.00%
D
KTRSNTSN-H
Adult trespasser electric shock: contact with non-traction supplies not in
station
HEN-40 - Child trespasser fall while on the mainline railway
HEN-40
JTRSFALL-H
Child trespasser fall while on the mainline railway
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
D
100
Table B
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
HEN-41 - Child trespasser electric shock (OHL)
HEN-41
JTRSOHLN-H
Child trespasser electric shock: contact with OHL not in station
HEN-41
JTRSOHLS-H
Child trespasser electric shock: contact with OHL in station
Trk mts
Trk mts
7.82E-08
9.20E-09
2.714
2.429
0.2857
0.3533
0.3161
0.0372
100.00%
89.47%
10.53%
D
D
HEN-42 - Child trespasser electric shock (conductor rail)
HEN-42
JTRSCONS-H
Child trespasser electric shock: contact with conductor rail in station
HEN-42
JTRSCONN-H
Child trespasser electric shock: contact with conductor rail not in station
Trk mts
Trk mts
2.42E-08
1.93E-08
1.350
0.7500
0.6000
0.6936
0.3853
0.3083
100.00%
55.56%
44.44%
D
D
HEN-43 - Child trespasser electric shock (non-traction supply)
HEN-43
JTRSNTSS-H
Child trespasser electric shock: contact with non-traction supplies in station
Trk mts
3.58E-09
0.1111
0.1111
6.88E-04
6.88E-04
100.00%
100.00%
D
HEN-43
Trk mts
0
0
0
0%
N
LXs: MG, MCB + CCTV
2.48E-04
14.00
1.429
0.2055
0.3175
0.2085
0.0312
100.00%
65.67%
9.83%
D
LXs: AHB
4.56E-04
0.2055
0.0312
9.83%
D
LXs: MG, MCB + CCTV
LXs: MG, MCB + CCTV
2.48E-04
1.74E-04
0.2055
0.1443
0.0272
0.0219
8.57%
6.90%
D
E
LXs: AHB
3.20E-04
0.1443
0.0219
6.90%
E
LXs: MG, MCB + CCTV
LXs: MG, MCB + CCTV
1.74E-04
9.51E-05
0.1443
0.0787
0.0191
0.0119
6.02%
3.76%
D
D
LXs: AHB
1.75E-04
0.0787
0.0119
3.76%
E
LXs: MG, MCB + CCTV
9.51E-05
0.0787
0.0104
3.28%
D
Hazardous Event
Number
Precursor code Cause precursor description
JTRSNTSN-H
Child trespasser electric shock: contact with non-traction supplies not in
station
HEN-44 - MOP struck / trapped by level crossing equipment or involved in RTA at level crossing
HEN-44A - MOP struck by road vehicle or involved in RTA at level crossing
HEN-44A
KRVEMGB-1H
MOP injury due to road vehicle striking level crossing equipment - MG, MCB
+ CCTV (Improper userror)
HEN-44A
KRVEAHB-1H
MOP injury due to road vehicle striking level crossing equipment - AHB
(Improper userror)
HEN-44A
KCOLMGB-1H
MOP struck by road vehicle on MG, MCB + CCTV (Improper userror)
HEN-44A
KRVEMGB-3H
MOP injury due to road vehicle striking level crossing equipment - MG, MCB
+ CCTV (Proper use)
HEN-44A
KRVEAHB-3H
MOP injury due to road vehicle striking level crossing equipment - AHB
(Proper use)
HEN-44A
KCOLMGB-3H
MOP struck by road vehicle on MG, MCB + CCTV (Proper use)
HEN-44A
KRVEMGB-2H
MOP injury due to road vehicle striking level crossing equipment - MG, MCB
+ CCTV (Improper use - violation)
HEN-44A
KRVEAHB-2H
MOP injury due to road vehicle striking level crossing equipment - AHB
(Improper use - violation)
HEN-44A
KCOLMGB-2H
MOP struck by road vehicle on MG, MCB + CCTV (Improper use - violation)
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
101
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-44A
KRVEABCL1H
MOP injury due to road vehicle striking level crossing equipment - ABCL
(Improper userror)
HEN-44A
KRVEABCL3H
MOP injury due to road vehicle striking level crossing equipment - ABCL
(Proper use)
HEN-44A
KRVEABCL2H
MOP injury due to road vehicle striking level crossing equipment - ABCL
(Improper use - violation)
HEN-44A
KRTAAHB-1H
MOP injury due to road vehicle striking level crossing equipment following
RTA - AHB (Improper userror)
HEN-44A
KRTAAHB-3H
MOP injury due to road vehicle striking level crossing equipment following
RTA - AHB (Proper use)
HEN-44A
KRTAMGB-1H
MOP injury due to road vehicle striking level crossing equipment following
RTA - MG, MCB + CCTV (Improper userror)
HEN-44A
KRTAMGB-3H
MOP injury due to road vehicle striking level crossing equipment following
RTA - MG, MCB + CCTV (Proper use)
HEN-44A
KRTAABCL1H
MOP injury due to road vehicle striking level crossing equipment following
RTA - ABCL (Improper userror)
HEN-44A
KRTAAHB-2H
MOP injury due to road vehicle striking level crossing equipment following
RTA - AHB (Improper use - violation)
HEN-44A
KRTAABCL3H
MOP injury due to road vehicle striking level crossing equipment following
RTA - ABCL (Proper use)
HEN-44A
KRTAMGB-2H
MOP injury due to road vehicle striking level crossing equipment following
RTA - MG, MCB + CCTV (Improper use - violation)
HEN-44A
KRTAABCL2H
MOP injury due to road vehicle striking level crossing equipment following
RTA - ABCL (Improper use - violation)
HEN-44A
KRTAUWCT2H MOP injury due to road vehicle striking level crossing equipment following
RTA - UWC + T (Improper use - violation)
HEN-44A
KRTAUWC-1H MOP injury due to road vehicle striking level crossing equipment following
RTA - UWC (Improper userror)
HEN-44A
KRTAUWC-2H MOP injury due to road vehicle striking level crossing equipment following
RTA - UWC (Improper use - violation)
HEN-44A
KRTAUWC-3H MOP injury due to road vehicle striking level crossing equipment following
RTA - UWC (Proper use)
Version 5.5/May 2008
Normaliser
LXs: ABCL
National
frequency
(events/
normaliser)
0.0014
National
frequency
(events/ year)
0.0685
Risk cont.
(FWI / year)
0.0104
Risk cont.
% of total
HE risk
3.28%
Deriv. of
prec. (D,
E, N)
D
LXs: ABCL
9.62E-04
0.0481
0.0073
2.30%
E
LXs: ABCL
5.25E-04
0.0262
0.0040
1.25%
E
LXs: AHB
0
0
0
0%
N
LXs: AHB
0
0
0
0%
N
LXs: MG, MCB + CCTV
0
0
0
0%
N
LXs: MG, MCB + CCTV
0
0
0
0%
N
LXs: ABCL
0
0
0
0%
N
LXs: AHB
0
0
0
0%
N
LXs: ABCL
0
0
0
0%
N
LXs: MG, MCB + CCTV
0
0
0
0%
N
LXs: ABCL
0
0
0
0%
N
LXs: UWC + T
0
0
0
0%
N
LXs: UWC
0
0
0
0%
N
LXs: UWC
0
0
0
0%
N
LXs: UWC
0
0
0
0%
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
102
Table B
Hazardous Event
Number
HEN-44A
HEN-44A
HEN-44A
HEN-44A
HEN-44A
Precursor code
KCOLUWCT3H
KCOLUWCT2H
KCOLUWCT1H
KCOLUWCM3H
KRTAUWCM3H
HEN-44A
HEN-44A
KCOLABCL1H
KRVEUWC-2H
HEN-44A
KRVEUWC-3H
HEN-44A
KRVEUWCM1H
HEN-44A
KRVEUWCM2H
HEN-44A
KRVEUWCM3H
HEN-44A
HEN-44A
KCOLOC--1H
KRVEUWCT1H
HEN-44A
KRTAUWCM1H
HEN-44A
KRVEUWCT3H
HEN-44A
HEN-44A
HEN-44A
HEN-44A
HEN-44A
HEN-44A
KCOLABCL2H
KCOLABCL3H
KCOLAHB-1H
KCOLAHB-2H
KCOLAHB-3H
KRVEUWCT2H
HEN-44A
KRTAUWCT3H
Version 5.5/May 2008
Cause precursor description
MOP struck by road vehicle on UWC + T (Proper use)
MOP struck by road vehicle on UWC + T (Improper use - violation)
MOP struck by road vehicle on UWC + T (Improper userror)
MOP struck by road vehicle on UWC + MWL (Proper use)
MOP injury due to road vehicle striking level crossing equipment following
RTA - UWC + MWL (Proper use)
MOP struck by road vehicle on ABCL (Improper userror)
MOP injury due to road vehicle striking level crossing equipment - UWC
(Improper use - violation)
MOP injury due to road vehicle striking level crossing equipment - UWC
(Proper use)
MOP injury due to road vehicle striking level crossing equipment - UWC +
MWL (Improper userror)
MOP injury due to road vehicle striking level crossing equipment - UWC +
MWL (Improper use - violation)
MOP injury due to road vehicle striking level crossing equipment - UWC +
MWL (Proper use)
MOP struck by road vehicle on OC (Improper userror)
MOP injury due to road vehicle striking level crossing equipment - UWC + T
(Improper userror)
MOP injury due to road vehicle striking level crossing equipment following
RTA - UWC + MWL (Improper userror)
MOP injury due to road vehicle striking level crossing equipment - UWC + T
(Proper use)
MOP struck by road vehicle on ABCL (Improper use - violation)
MOP struck by road vehicle on ABCL (Proper use)
MOP struck by road vehicle on AHB (Improper userror)
MOP struck by road vehicle on AHB (Improper use - violation)
MOP struck by road vehicle on AHB (Proper use)
MOP injury due to road vehicle striking level crossing equipment - UWC + T
(Improper use - violation)
MOP injury due to road vehicle striking level crossing equipment following
RTA - UWC + T (Proper use)
Normaliser
LXs: UWC + T
LXs: UWC + T
LXs: UWC + T
LXs: UWC + MWL
LXs: UWC + MWL
National
frequency
(events/
normaliser)
0
0
0
0
0
National
frequency
(events/ year)
0
0
0
0
0
Risk cont.
(FWI / year)
0
0
0
0
0
Risk cont.
% of total
HE risk
0%
0%
0%
0%
0%
Deriv. of
prec. (D,
E, N)
N
N
N
N
N
LXs: ABCL
LXs: UWC
0
0
0
0
0
0
0%
0%
N
N
LXs: UWC
0
0
0
0%
N
LXs: UWC + MWL
0
0
0
0%
N
LXs: UWC + MWL
0
0
0
0%
N
LXs: UWC + MWL
0
0
0
0%
N
LXs: OC
LXs: UWC + T
0
0
0
0
0
0
0%
0%
N
N
LXs: UWC + MWL
0
0
0
0%
N
LXs: UWC + T
0
0
0
0%
N
LXs: ABCL
LXs: ABCL
LXs: AHB
LXs: AHB
LXs: AHB
LXs: UWC + T
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0%
0%
0%
0%
0%
0%
N
N
N
N
N
N
LXs: UWC + T
0
0
0
0%
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
103
Table B
Hazardous Event
Number
HEN-44A
HEN-44A
HEN-44A
Precursor code
KCOLUWCM2H
KCOLUWCM1H
KRTAUWCT1H
Cause precursor description
Normaliser
MOP struck by road vehicle on UWC + MWL (Improper use - violation)
LXs: UWC + MWL
MOP struck by road vehicle on UWC + MWL (Improper userror)
LXs: UWC + MWL
MOP injury due to road vehicle striking level crossing equipment following
LXs: UWC + T
RTA - UWC + T (Improper userror)
HEN-44A
KCOLUWC-3H MOP struck by road vehicle on UWC (Proper use)
LXs: UWC
HEN-44A
KCOLUWC-2H MOP struck by road vehicle on UWC (Improper use - violation)
LXs: UWC
HEN-44A
KCOLUWC-1H MOP struck by road vehicle on UWC (Improper userror)
LXs: UWC
HEN-44A
KRVEUWC-1H MOP injury due to road vehicle striking level crossing equipment - UWC
LXs: UWC
(Improper userror)
HEN-44A
KCOLOC--2H
MOP struck by road vehicle on OC (Improper use - violation)
LXs: OC
HEN-44A
KRTAUWCM2H MOP injury due to road vehicle striking level crossing equipment following
LXs: UWC + MWL
RTA - UWC + MWL (Improper use - violation)
HEN-44A
KCOLOC--3H
MOP struck by road vehicle on OC (Proper use)
LXs: OC
HEN-44B - MOP struck / trapped by level crossing equipment
HEN-44B
KEQUMGB-1H MOP struck/trapped by level crossing equipment - MG, MCB + CCTV
LXs: MG, MCB + CCTV
(Improper userror)
HEN-44B
KEQUMGB-3H MOP struck/trapped by level crossing equipment - MG, MCB + CCTV (Proper LXs: MG, MCB + CCTV
use)
HEN-44B
KEQUMGB-2H MOP struck/trapped by level crossing equipment - MG, MCB + CCTV
LXs: MG, MCB + CCTV
(Improper use - violation)
HEN-44B
KEQUAHB-1H
MOP struck/trapped by level crossing equipment - AHB (Improper userror)
LXs: AHB
HEN-44B
HEN-44B
KEQUAHB-3H
KEQUUWCT1H
HEN-44B
KEQUAHB-2H
HEN-44B
National
frequency
(events/
normaliser)
0
0
0
National
frequency
(events/ year)
0
0
0
Risk cont.
(FWI / year)
0
0
0
Risk cont.
% of total
HE risk
0%
0%
0%
Deriv. of
prec. (D,
E, N)
N
N
N
0
0
0
0
0
0
0
0
0
0
0
0
0%
0%
0%
0%
N
N
N
N
0
0
0
0
0
0
0%
0%
N
N
0
0
0.1090
0.0446
0%
34.33%
14.03%
N
0.0062
0
12.57
5.138
0.0044
3.608
0.0313
9.85%
D
0.0024
1.968
0.0171
5.37%
D
9.11E-04
0.4111
0.0036
1.12%
D
D
LXs: AHB
LXs: UWC + T
6.40E-04
9.50E-05
0.2886
0.1579
0.0025
0.0014
0.79%
0.43%
D
E
LXs: AHB
3.49E-04
0.1574
0.0014
0.43%
D
KEQUFP--1H
MOP struck/trapped by level crossing equipment - AHB (Proper use)
MOP struck/trapped by level crossing equipment - UWC + T (Improper
userror)
MOP struck/trapped by level crossing equipment - AHB (Improper use violation)
MOP struck/trapped by level crossing equipment - FP (Improper userror)
LXs: FP
5.30E-05
0.1370
0.0012
0.37%
D
HEN-44B
KEQUUWCT3H
MOP struck/trapped by level crossing equipment - UWC + T (Proper use)
LXs: UWC + T
6.67E-05
0.1108
9.61E-04
0.30%
D
HEN-44B
KEQUUWC-1H
MOP struck/trapped by level crossing equipment - UWC (Improper userror)
LXs: UWC
9.50E-05
0.1007
8.73E-04
0.28%
E
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
104
Table B
Hazardous Event
Number
HEN-44B
HEN-44B
HEN-44B
Precursor code
KEQUFP--3H
KEQUUWC-3H
KEQUABCL1H
HEN-44B
KEQUUWCT2H
HEN-44B
HEN-44B
HEN-44B
HEN-44B
HEN-44B
HEN-44B
HEN-44B
Cause precursor description
MOP struck/trapped by level crossing equipment - FP (Proper use)
MOP struck/trapped by level crossing equipment - UWC (Proper use)
MOP struck/trapped by level crossing equipment - ABCL (Improper userror)
MOP struck/trapped by level crossing equipment - UWC + T (Improper use violation)
KEQUFP--2H
MOP struck/trapped by level crossing equipment - FP (Improper use violation)
KEQUABCL3H MOP struck/trapped by level crossing equipment - ABCL (Proper use)
KEQUUWC-2H MOP struck/trapped by level crossing equipment - UWC (Improper use violation)
KEQUABCL2H MOP struck/trapped by level crossing equipment - ABCL (Improper use violation)
KEQUUWCM1H MOP struck/trapped by level crossing equipment - UWC + MWL (Improper
userror)
KEQUUWCM3H MOP struck/trapped by level crossing equipment - UWC + MWL (Proper use)
KEQUUWCM2H MOP struck/trapped by level crossing equipment - UWC + MWL (Improper
use - violation)
Normaliser
LXs: FP
LXs: UWC
LXs: ABCL
National
frequency
(events/
normaliser)
3.72E-05
6.67E-05
0.0014
National
frequency
(events/ year)
0.0962
0.0707
0.0685
Risk cont.
(FWI / year)
8.34E-04
6.13E-04
5.94E-04
Risk cont.
% of total
HE risk
0.26%
0.19%
0.19%
Deriv. of
prec. (D,
E, N)
D
D
E
LXs: UWC + T
3.64E-05
0.0605
5.24E-04
0.17%
E
LXs: FP
2.03E-05
0.0525
4.55E-04
0.14%
E
LXs: ABCL
LXs: UWC
9.62E-04
3.64E-05
0.0481
0.0386
4.17E-04
3.35E-04
0.13%
0.11%
E
E
LXs: ABCL
5.25E-04
0.0262
2.28E-04
0.07%
D
LXs: UWC + MWL
1.66E-04
0.0155
1.34E-04
0.04%
E
LXs: UWC + MWL
1.17E-04
0.0109
9.42E-05
0.03%
E
LXs: UWC + MWL
6.37E-05
0.0059
5.14E-05
0.02%
E
3.61E-07
16.53
11.20
11.20
3.336
2.759
2.759
100.00%
82.72%
82.72%
D
1.29E-07
4.000
4.000
0.4061
0.4061
12.17%
12.17%
D
4.29E-08
1.333
1.333
0.1702
0.1702
5.10%
5.10%
D
HEN-45 - MOP (non-trespasser) fall from outside onto the mainline railway
HEN-45A - MOP (non-trespasser) fall from outside onto the mainline railway from bridge (incl. RTA)
HEN-45A
KRCIFBRG-H
MOP (non-trespasser) fall from outside onto the mainline railway from bridge,
Trk mts
footbridge
HEN-45B - MOP (non-trespasser) fall from outside onto the mainline railway from wall, bank, roof or fence (incl. RTA)
HEN-45B
KRCIFOTH-H
MOP (non-trespasser) fall from outside onto the mainline railway from wall,
Trk mts
bank, roof, fence, etc
HEN-45C - MOP (non-trespasser) fall from outside onto the mainline railway from other eg viaduct (incl. RTA)
HEN-45C
KRCIFOTT-H
MOP (non-trespasser) fall from outside onto the mainline railway from other
Trk mts
eg viaduct
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
105
Table B
Hazardous Event
Number
Precursor code Cause precursor description
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
0.4026
0.3532
0.1433
100.00%
87.74%
35.59%
D
HEN-46 - MOP slip, trip or fall on level crossing or footpath crossing
HEN-46A - MOP slip, trip or fall on level crossing: other (AHB, MG/MCB/CCTV & all UWC)
HEN-46A
KSTFMGB-3H
MOP pedestrian slip, trip or fall on level crossing - MG, MCB + CCTV (Proper LXs: MG, MCB + CCTV
use)
HEN-46A
KCYCMGB-3H MOP cyclist fall on level crossing - MG, MCB + CCTV (Proper use)
LXs: MG, MCB + CCTV
HEN-46A
KMOTMGB-3H MOP motorcyclist fall on level crossing - MG, MCB + CCTV (Proper use)
LXs: MG, MCB + CCTV
0.0065
15.14
13.29
5.389
0.0041
9.08E-04
3.384
0.7520
0.0900
0.0200
22.35%
4.97%
D
D
HEN-46A
KSTFMGB-1H
LXs: MG, MCB + CCTV
6.30E-04
0.5216
0.0139
3.44%
D
HEN-46A
HEN-46A
HEN-46A
HEN-46A
KSTFUWC-3H
KCYCAHB-3H
KSTFAHB-3H
KCYCMGB-1H
MOP pedestrian slip, trip or fall on level crossing - MG, MCB + CCTV
(Improper use - error)
MOP pedestrian slip, trip or fall on level crossing - UWC (Proper use)
MOP cyclist fall on level crossing - AHB (Proper use)
MOP pedestrian slip, trip or fall on level crossing - AHB (Proper use)
MOP cyclist fall on level crossing - MG, MCB + CCTV (Improper use - error)
LXs: UWC
LXs: AHB
LXs: AHB
LXs: MG, MCB + CCTV
4.73E-04
0.0011
8.34E-04
3.96E-04
0.5013
0.5013
0.3760
0.3275
0.0133
0.0133
0.0100
0.0087
3.31%
3.31%
2.48%
2.16%
D
D
D
D
HEN-46A
KSTFUWCT3H
MOP pedestrian slip, trip or fall on level crossing - UWC + T (Proper use)
LXs: UWC + T
1.51E-04
0.2507
0.0067
1.66%
D
HEN-46A
KSTFMGB-2H
LXs: MG, MCB + CCTV
2.80E-04
0.2318
0.0062
1.53%
D
HEN-46A
KCYCMGB-2H
LXs: MG, MCB + CCTV
1.76E-04
0.1456
0.0039
0.96%
D
HEN-46A
HEN-46A
KSTFAOCL3H
KSTFUWCM3H
MOP pedestrian slip, trip or fall on level crossing - MG, MCB + CCTV
(Improper use - violation)
MOP cyclist fall on level crossing - MG, MCB + CCTV (Improper use violation)
MOP pedestrian slip, trip or fall on level crossing - AOCL (Proper use)
MOP pedestrian slip, trip or fall on level crossing - UWC + MWL (Proper use)
LXs: AOCL
LXs: UWC + MWL
9.79E-04
0.0013
0.1253
0.1253
0.0033
0.0033
0.83%
0.83%
D
D
HEN-46A
HEN-46A
HEN-46A
7.55E-05
1.18E-04
8.79E-05
0.1253
0.1253
0.0728
0.0033
0.0033
0.0019
0.83%
0.83%
0.48%
D
D
E
4.58E-05
0.0485
0.0013
0.32%
E
HEN-46A
HEN-46A
KMOTUWCT3H MOP motorcyclist fall on level crossing - UWC + T (Proper use)
LXs: UWC + T
KMOTUWC-3H MOP motorcyclist fall on level crossing - UWC (Proper use)
LXs: UWC
KMOTMGB-1H MOP motorcyclist fall on level crossing - MG, MCB + CCTV (Improper use LXs: MG, MCB + CCTV
error)
KSTFUWC-1H
MOP pedestrian slip, trip or fall on level crossing - UWC (Improper use LXs: UWC
error)
KCYCAHB-1H
MOP cyclist fall on level crossing - AHB (Improper use - error)
LXs: AHB
KSTFAHB-1H
MOP pedestrian slip, trip or fall on level crossing - AHB (Improper use - error)
LXs: AHB
1.08E-04
8.07E-05
0.0485
0.0364
0.0013
9.67E-04
0.32%
0.24%
E
D
HEN-46A
KMOTMGB-2H
3.91E-05
0.0323
8.60E-04
0.21%
E
HEN-46A
Version 5.5/May 2008
MOP motorcyclist fall on level crossing - MG, MCB + CCTV (Improper use violation)
LXs: MG, MCB + CCTV
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
106
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-46A
KSTFUWCT1H MOP pedestrian slip, trip or fall on level crossing - UWC + T (Improper use error)
HEN-46A
KSTFUWC-2H
MOP pedestrian slip, trip or fall on level crossing - UWC (Improper use violation)
HEN-46A
KCYCAHB-2H
MOP cyclist fall on level crossing - AHB (Improper use - violation)
HEN-46A
KSTFAHB-2H
MOP pedestrian slip, trip or fall on level crossing - AHB (Improper use violation)
HEN-46A
KSTFAOCL1H
MOP pedestrian slip, trip or fall on level crossing - AOCL (Improper use error)
HEN-46A
KSTFUWCM1H MOP pedestrian slip, trip or fall on level crossing - UWC + MWL (Improper
use - error)
HEN-46A
KMOTUWCT1H MOP motorcyclist fall on level crossing - UWC + T (Improper use - error)
HEN-46A
HEN-46A
HEN-46A
MOP motorcyclist fall on level crossing - UWC (Improper use - error)
MOP pedestrian slip, trip or fall on level crossing - UWC + T (Improper use violation)
KSTFAOCL2H
MOP pedestrian slip, trip or fall on level crossing - AOCL (Improper use violation)
KMOTUWCT2H MOP motorcyclist fall on level crossing - UWC + T (Improper use - violation)
HEN-46A
KMOTUWC-2H
MOP motorcyclist fall on level crossing - UWC (Improper use - violation)
HEN-46A
KSTFUWCM2H
HEN-46A
HEN-46A
HEN-46A
KMOTAOCL3H
KMOTAOCL1H
KMOTAOCL2H
MOP pedestrian slip, trip or fall on level crossing - UWC + MWL (Improper
use - violation)
MOP motorcyclist fall on level crossing - AOCL (Proper use)
MOP motorcyclist fall on level crossing - AOCL (Improper use - error)
MOP motorcyclist fall on level crossing - AOCL (Improper use - violation)
HEN-46A
HEN-46A
HEN-46A
HEN-46A
KCYCUWCT2H
KCYCUWCT3H
KSTFABCL3H
KCYCOC--3H
MOP cyclist fall on level crossing - UWC + T (Improper use - violation)
MOP cyclist fall on level crossing - UWC + T (Proper use)
MOP pedestrian slip, trip or fall on level crossing - ABCL (Proper use)
MOP cyclist fall on level crossing - OC (Proper use)
HEN-46A
KMOTUWC-1H
KSTFUWCT2H
Version 5.5/May 2008
Normaliser
LXs: UWC + T
National
frequency
(events/
normaliser)
1.46E-05
National
frequency
(events/ year)
0.0243
Risk cont.
(FWI / year)
6.45E-04
Risk cont.
% of total
HE risk
0.16%
Deriv. of
prec. (D,
E, N)
E
LXs: UWC
2.03E-05
0.0216
5.73E-04
0.14%
E
LXs: AHB
LXs: AHB
4.78E-05
3.59E-05
0.0216
0.0162
5.73E-04
4.30E-04
0.14%
0.11%
E
E
LXs: AOCL
9.48E-05
0.0121
3.22E-04
0.08%
E
LXs: UWC + MWL
1.30E-04
0.0121
3.22E-04
0.08%
E
LXs: UWC + T
7.30E-06
0.0121
3.22E-04
0.08%
E
LXs: UWC
LXs: UWC + T
1.14E-05
6.49E-06
0.0121
0.0108
3.22E-04
2.87E-04
0.08%
0.07%
E
E
LXs: AOCL
4.21E-05
0.0054
1.43E-04
0.04%
E
LXs: UWC + T
3.25E-06
0.0054
1.43E-04
0.04%
E
LXs: UWC
5.09E-06
0.0054
1.43E-04
0.04%
E
LXs: UWC + MWL
5.80E-05
0.0054
1.43E-04
0.04%
E
LXs: AOCL
LXs: AOCL
LXs: AOCL
0
0
0
0
0
0
0
0
0
0%
0%
0%
N
N
N
LXs: UWC + T
LXs: UWC + T
LXs: ABCL
LXs: OC
0
0
0
0
0
0
0
0
0
0
0
0
0%
0%
0%
0%
N
N
N
N
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
107
Table B
Normaliser
LXs: UWC + MWL
LXs: OC
LXs: UWC + MWL
KCYCAOCL3H
KCYCABCL3H
KMOTOC--1H
KMOTABCL3H
KMOTOC--2H
KMOTABCL2H
Cause precursor description
MOP motorcyclist fall on level crossing - UWC + MWL (Proper use)
MOP cyclist fall on level crossing - OC (Improper use - error)
MOP motorcyclist fall on level crossing - UWC + MWL (Improper use violation)
MOP cyclist fall on level crossing - AOCL (Proper use)
MOP cyclist fall on level crossing - ABCL (Proper use)
MOP motorcyclist fall on level crossing - OC (Improper use - error)
MOP motorcyclist fall on level crossing - ABCL (Proper use)
MOP motorcyclist fall on level crossing - OC (Improper use - violation)
MOP motorcyclist fall on level crossing - ABCL (Improper use - violation)
National
frequency
(events/
normaliser)
0
0
0
LXs: AOCL
LXs: ABCL
LXs: OC
LXs: ABCL
LXs: OC
LXs: ABCL
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0%
0%
0%
0%
0%
0%
N
N
N
N
N
N
HEN-46A
HEN-46A
HEN-46A
HEN-46A
HEN-46A
HEN-46A
HEN-46A
HEN-46A
KMOTABCL1H
KCYCABCL2H
KCYCOC--2H
KCYCABCL1H
KCYCAOCL2H
KCYCAOCL1H
KCYCUWCM3H
KCYCUWCM2H
MOP motorcyclist fall on level crossing - ABCL (Improper use - error)
MOP cyclist fall on level crossing - ABCL (Improper use - violation)
MOP cyclist fall on level crossing - OC (Improper use - violation)
MOP cyclist fall on level crossing - ABCL (Improper use - error)
MOP cyclist fall on level crossing - AOCL (Improper use - violation)
MOP cyclist fall on level crossing - AOCL (Improper use - error)
MOP cyclist fall on level crossing - UWC + MWL (Proper use)
MOP cyclist fall on level crossing - UWC + MWL (Improper use - violation)
LXs: ABCL
LXs: ABCL
LXs: OC
LXs: ABCL
LXs: AOCL
LXs: AOCL
LXs: UWC + MWL
LXs: UWC + MWL
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0%
0%
0%
0%
0%
0%
0%
0%
N
N
N
N
N
N
N
N
HEN-46A
HEN-46A
HEN-46A
KCYCUWCM1H MOP cyclist fall on level crossing - UWC + MWL (Improper use - error)
KMOTOC--3H
MOP motorcyclist fall on level crossing - OC (Proper use)
KMOTAHB-2H
MOP motorcyclist fall on level crossing - AHB (Improper use - violation)
LXs: UWC + MWL
LXs: OC
LXs: AHB
0
0
0
0
0
0
0
0
0
0%
0%
0%
N
N
N
HEN-46A
KSTFABCL1H
LXs: ABCL
0
0
0
0%
N
HEN-46A
HEN-46A
HEN-46A
KSTFOC--3H
KCYCUWC-1H
KSTFOC--1H
LXs: OC
LXs: UWC
LXs: OC
0
0
0
0
0
0
0
0
0
0%
0%
0%
N
N
N
HEN-46A
KMOTUWCM1H MOP motorcyclist fall on level crossing - UWC + MWL (Improper use - error)
LXs: UWC + MWL
0
0
0
0%
N
HEN-46A
KSTFOC--2H
LXs: OC
0
0
0
0%
N
Hazardous Event
Number
HEN-46A
HEN-46A
HEN-46A
Precursor code
KMOTUWCM3H
KCYCOC--1H
KMOTUWCM2H
HEN-46A
HEN-46A
HEN-46A
HEN-46A
HEN-46A
HEN-46A
Version 5.5/May 2008
MOP pedestrian slip, trip or fall on level crossing - ABCL (Improper use error)
MOP pedestrian slip, trip or fall on level crossing - OC (Proper use)
MOP cyclist fall on level crossing - UWC (Improper use - error)
MOP pedestrian slip, trip or fall on level crossing - OC (Improper use - error)
MOP pedestrian slip, trip or fall on level crossing - OC (Improper use violation)
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0
0
0
Risk cont.
(FWI / year)
0
0
0
Risk cont.
% of total
HE risk
0%
0%
0%
Deriv. of
prec. (D,
E, N)
N
N
N
108
Table B
Normaliser
LXs: UWC
LXs: UWC + T
LXs: ABCL
National
frequency
(events/
normaliser)
0
0
0
LXs: AHB
LXs: AHB
LXs: UWC
0
0
0
LXs: FP
LXs: FP
6.30E-04
6.10E-05
0
0
0
1.857
1.629
0.1577
LXs: FP
2.71E-05
0.0701
0.0019
0.46%
E
HEN-48 - MOP exposure to fire on the mainline railway
HEN-48
KRCIFIRE-E
MOP exposed to fire on NRMI
Trk mts
1.61E-09
0.0500
0.0500
0.0025
0.0025
100.00%
100.00%
E
HEN-49 - MOP exposure to explosion on the mainline railway
HEN-49
KRCIEXPL-E
MOP exposed to explosion on NRMI
Trk mts
1.61E-09
0.0500
0.0500
0.3000
0.3000
100.00%
100.00%
E
HEN-50 - MOP exposure to electrical arcing
HEN-50
KRCIARC--E
MOP exposed to electrical arcing from the mainline railway
Trk mts
1.61E-09
0.0500
0.0500
3.12E-04
3.12E-04
100.00%
100.00%
D
HEN-51 - MOP electric shock (OHL)
HEN-51
KOHLCON--H
MOP electric shock - contact with OHL
Trk mts
2.15E-08
0.6667
0.6667
0.1149
0.1149
100.00%
100.00%
D
HEN-52 - MOP electric shock (conductor rail)
HEN-52
KCONDCON-H MOP electric shock - contact with conductor rail
Trk mts
1.61E-09
0.0500
0.0500
0.0161
0.0161
100.00%
100.00%
D
Hazardous Event
Number
HEN-46A
HEN-46A
HEN-46A
Cause precursor description
MOP cyclist fall on level crossing - UWC (Improper use - violation)
MOP cyclist fall on level crossing - UWC + T (Improper use - error)
MOP pedestrian slip, trip or fall on level crossing - ABCL (Improper use violation)
HEN-46A
KMOTAHB-3H
MOP motorcyclist fall on level crossing - AHB (Proper use)
HEN-46A
KMOTAHB-1H
MOP motorcyclist fall on level crossing - AHB (Improper use - error)
HEN-46A
KCYCUWC-3H MOP cyclist fall on level crossing - UWC (Proper use)
HEN-46B - MOP slip, trip or fall on level crossing: open crossing (OC)
HEN-46B
KFPCFALL3H
MOP pedestrian slip, trip or fall on level crossing - FP (Proper use)
HEN-46B
KFPCFALL1H
MOP pedestrian slip, trip or fall on level crossing - FP (Improper use - error)
HEN-46B
Precursor code
KCYCUWC-2H
KCYCUWCT1H
KSTFABCL2H
KFPCFALL2H
Version 5.5/May 2008
MOP pedestrian slip, trip or fall on level crossing - FP (Improper use violation)
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
0
0
0
Risk cont.
(FWI / year)
0
0
0
Risk cont.
% of total
HE risk
0%
0%
0%
Deriv. of
prec. (D,
E, N)
N
N
N
0
0
0
0.0494
0.0433
0.0042
0%
0%
0%
12.26%
10.76%
1.04%
N
N
N
D
D
109
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-53 - MOP electric shock (non-traction supplies)
HEN-53
KSHKNTS--E
MOP electric shock: contact with non-traction supplies inside the mainline
railway
HEN-54 - MOP exposure to hazardous substances leakage on the mainline railway
HEN-54
KHAZORCI-E
MOP exposed to hazardous substance leakage on NRMI other than station
HEN-55 - Passenger struck by/contact with/trapped in object at station
HEN-55
PCONOBJRWE Passenger contact with other object on railway premises eg head strike on
station sign
HEN-55
PTRAPTCKGE Passenger trapped/injured in ticket gates
HEN-55
PPLSOB---E
Passenger injury due to being hit by objects while on platform
HEN-55
PPOPAS---E
Passenger injury due to being hit accidentally by other passengers on
platform or station
HEN-55
PPOBST---E
Passenger injury due to being hit by objects not on platform
HEN-55
PPVEST---E
Passenger injury due to being hit by vehicle not on platform
HEN-55
PPLSPL---E
Passenger injury due to being hit by platform vehicle while on platform
HEN-56 - Workforce struck by/contact with/ trapped in object not at station
HEN-56
GTWPOWER-H Track worker injury while using power/hand tools
HEN-56
GTWOBSTR-P Track worker struck by moving object eg falling branch
HEN-56
GTWSTROB-H Track worker injury due to striking/contact with object
HEN-56
GTWL-M-C-H
Track worker injury while lifting/moving/carrying
HEN-56
GTWSTGRITP Track worker injury due to being struck by grit/dust
HEN-56
GOWSTROB-H Other workforce injury due to striking/contact with object
HEN-56
GTWSTCLIP
Track worker injury due to being struck by track clips
HEN-56
GTWSHARP-H Track worker injury while using sharp object
HEN-56
GTWSTBAR-P Track worker injury due to being struck by bars whilst barring rails
HEN-56
GOWL-M-C-H
Other workforce injury while lifting/moving/carrying
HEN-56
GOWOBSTR-P Other workforce struck by moving object eg falling branch
HEN-56
GTWTREAD-H Track worker injury due to treading on object
HEN-56
GOWCOUPL-H Other workforce injury while coupling/uncoupling rail vehicles
Version 5.5/May 2008
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
Trk mts
1.07E-08
0.3333
0.3333
0.0021
0.0021
100.00%
100.00%
D
Trk mts
3.22E-10
0.0100
0.0100
0.1000
0.1000
100.00%
100.00%
E
Pass. jour
1.20E-07
317.3
134.7
1.053
0.4468
100.00%
42.44%
D
Pass. jour
Pass. jour
Pass. jour
6.07E-08
3.61E-08
2.96E-08
68.33
40.67
33.33
0.2267
0.1349
0.1106
21.53%
12.82%
10.50%
D
D
D
Pass. jour
Pass. jour
Pass. jour
2.58E-08
6.22E-09
3.85E-09
29.00
7.000
4.333
0.0962
0.0232
0.0144
9.14%
2.21%
1.37%
D
D
D
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Pass. jour
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Pass. jour
Pass. jour
Trk wrkr hrs
Pass. jour
2.62E-06
2.50E-06
2.00E-06
1.57E-06
6.50E-07
2.93E-08
4.98E-07
3.58E-07
3.46E-07
1.60E-08
7.70E-09
1.52E-07
5.63E-09
688.8
144.0
137.0
110.0
86.00
35.67
33.00
27.33
19.67
19.00
18.00
8.667
8.333
6.333
2.926
0.6118
0.5820
0.4673
0.3654
0.1515
0.1402
0.1161
0.0836
0.0807
0.0765
0.0368
0.0354
0.0269
100.00%
20.91%
19.89%
15.97%
12.49%
5.18%
4.79%
3.97%
2.86%
2.76%
2.61%
1.26%
1.21%
0.92%
D
D
D
D
D
D
D
D
D
D
D
D
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
110
Table B
Hazardous Event
Number
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
HEN-56
HEN-56
HEN-56
HEN-56
HEN-56
HEN-56
Precursor code
GTDSTROB-H
GTDCOUPL-H
GOWPOWER-H
GOWSTGRITP
GOWSHARP-H
GTCSTROB-H
GTDL-M-C-H
GOWTREAD-H
GTWCONPE-H
GTWCOUPL-H
GTDOBSTR-P
GTCL-M-C-H
GTCCOUPL-H
GTCOBSTR-P
GOWCONPE-H
GTDTREAD-H
GTDSHARP-H
GTCTREAD-H
GTCSHARP-H
GTCCONPE-H
GTDCONPE-H
Cause precursor description
Train crew (driver) injury due to striking/contact with object
Train crew (driver) injury while coupling/uncoupling rail vehicles
Other workforce injury while using power/hand tools
Other workforce injury due to being struck by grit/dust
Other workforce injury while using sharp object
Train crew (other) injury due to striking/contact with object
Train crew (driver) injury while lifting/moving/carrying
Other workforce injury due to treading on object
Track worker injury due to contact with other person
Track worker injury while coupling/uncoupling rail vehicles
Train crew (driver) struck by moving object eg falling branch
Train crew (other) injury while lifting/moving/carrying
Train crew (other) injury while coupling/uncoupling rail vehicles
Train crew (other) struck by moving object eg falling branch
Other workforce injury due to contact with other person
Train crew (driver) injury due to treading on object
Train crew (driver) injury while using sharp object
Train crew (other) injury due to treading on object
Train crew (other) injury while using sharp object
Train crew (other) injury due to contact with other person
Train crew (driver) injury due to contact with other person
HEN-57 - Passenger burn (not on train)
HEN-57
PBURNOTTRE Passenger burns not on train
HEN-58 - MOP injury on bridges/steps/subways (other than in stations) whilst on the mainline railway
HEN-58
KBRISTSUBE
Members of public injured on bridges/steps/subways (other than stations)
whilst on NRMI
Version 5.5/May 2008
Normaliser
Tot. trn mls
Tot. trn mls
Pass. jour
Pass. jour
Pass. jour
Pass. trn mls
Tot. trn mls
Pass. jour
Trk wrkr hrs
Trk wrkr hrs
Tot. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. jour
Tot. trn mls
Tot. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Tot. trn mls
National
frequency
(events/
normaliser)
1.70E-08
1.40E-08
3.85E-09
3.56E-09
3.56E-09
9.49E-09
6.00E-09
1.19E-09
2.43E-08
1.82E-08
3.00E-09
3.56E-09
2.37E-09
2.37E-09
3.56E-10
1.00E-09
1.00E-09
7.12E-10
7.12E-10
0
0
National
frequency
(events/ year)
5.667
4.667
4.333
4.000
4.000
2.667
2.000
1.333
1.333
1.000
1.000
1.000
0.6667
0.6667
0.4000
0.3333
0.3333
0.2000
0.2000
0
0
Risk cont.
(FWI / year)
0.0241
0.0198
0.0184
0.0170
0.0170
0.0113
0.0085
0.0057
0.0057
0.0042
0.0042
0.0042
0.0028
0.0028
0.0017
0.0014
0.0014
8.50E-04
8.50E-04
0
0
Risk cont.
% of total
HE risk
0.82%
0.68%
0.63%
0.58%
0.58%
0.39%
0.29%
0.19%
0.19%
0.15%
0.15%
0.15%
0.10%
0.10%
0.06%
0.05%
0.05%
0.03%
0.03%
0%
0%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
N
N
Pass. jour
5.63E-09
6.333
6.333
0.0104
0.0104
100.00%
100.00%
D
Trk mts
8.59E-08
2.667
2.667
0.0228
0.0228
100.00%
100.00%
D
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
111
Table B
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
Pass. jour
1.01E-08
11.33
11.33
0.0554
0.0554
100.00%
100.00%
D
Pass. jour
Trk wrkr hrs
Pass. trn mls
Tot. trn mls
2.13E-09
1.82E-08
7.12E-10
6.00E-10
3.800
2.400
1.000
0.2000
0.2000
0.0053
0.0034
0.0014
2.80E-04
2.80E-04
100.00%
63.16%
26.32%
5.26%
5.26%
D
D
D
D
HEN-61 - Passenger exposure to noise (not on train)
HEN-61
PEXPONOISE
Passenger exposed to noise
Pass. jour
2.96E-10
0.3333
0.3333
4.49E-04
4.49E-04
100.00%
100.00%
D
HEN-62 - Passenger on-train incident (excluding sudden train movement & assaults)
HEN-62
POTSTF---E
Passenger on-train: slip, trip or fall
HEN-62
POTINDOO-E
Passenger on-train: caught by internal train doors (either slam or power)
Pass. jour
Pass. jour
1.20E-07
1.36E-07
793.8
134.7
152.9
2.736
1.037
0.3068
100.00%
37.90%
11.21%
D
D
HEN-62
POTOHEAT-E
Pass. jour
4.00E-09
4.500
0.3025
11.06%
D
HEN-62
HEN-62
HEN-62
HEN-62
HEN-62
HEN-62
HEN-62
HEN-62
POTOTDEF-E
POTSTROB-E
POTSTFLL-E
POTSCOBN-E
POTCAUSH-E
POTOTH---E
POTINSB--E
POTCAUNS-E
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
Pass. jour
1.33E-07
1.11E-07
7.02E-08
5.96E-08
5.35E-08
1.10E-08
3.73E-09
3.56E-09
149.7
125.3
79.00
67.00
60.20
12.33
4.200
4.000
0.3004
0.2516
0.1586
0.1345
0.1208
0.0865
0.0295
0.0080
10.98%
9.19%
5.79%
4.91%
4.42%
3.16%
1.08%
0.29%
D
D
D
D
D
D
D
D
Hazardous Event
Number
Precursor code Cause precursor description
HEN-59 - MOP trapped at station
HEN-59
KCONOBJRWE MOP contact with other objects on railway premises ie banged head on
station sign
HEN-60 - Workforce exposure to noise (not on train)
HEN-60
GOWEXPNO-E Other workforce exposed to noise (not on train)
HEN-60
GTWEXPNO-E Track worker exposed to noise (not on train)
HEN-60
GTCEXPNO-E
Train crew (other) exposed to noise (not on train)
HEN-60
GTDEXPNO-E
Train crew (driver) exposed to noise (not on train)
Version 5.5/May 2008
Passenger on-train: fainting due to train overheating (not leading to
evacuation)
Passenger on-train: other defect on the train
Passenger on-train: strike against object eg fixed seating etc.
Passenger on-train: struck by falling/displaced luggage
Passenger on-train: scald/burn
Passenger on-train: caught on sharp object
Passenger on-train: other cause
Passenger on-train: animal/insect bite
Passenger on-train: caught on needle/syringe
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
112
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-63 - Workforce on-train incident (excluding sudden train movement & assaults)
HEN-63
GTCOTOBJ-E
Train crew (other) on-train: strike against object eg fixed seating etc.
HEN-63
GTCOTSTF-E
Train crew (other) on-train: slip, trip or fall
HEN-63
GTCOTDEF-E
Train crew (other) on-train: other defect on the train
HEN-63
GTCOTSCA-E
Train crew (other) on-train: scald/burn
HEN-63
GTCOTINT-E
Train crew (other) on-train: caught by internal train doors (either slam or
power)
HEN-63
GTCOTSHA-E
Train crew (other) on-train: caught by sharp object
HEN-63
GTDOTDEF-E
Train crew (driver) on-train: other defect on the train
HEN-63
GTDOTOBJ-E
Train crew (driver) on-train: strike against object eg fixed seating etc.
HEN-63
GTCOTCAT-E
Train crew (other) on-train: struck/crushed/trapped by catering trolley
HEN-63
GTDOTSTF-E
Train crew (driver) on-train: slip, trip or fall
HEN-63
GTDOTSHA-E
Train crew (driver) on-train: caught by sharp object
HEN-63
GTDOTINT-E
Train crew (driver) on-train: caught by internal train doors (either slam or
power)
HEN-63
GOWOTOBJ-E Other workforce on-train: strike against object eg fixed seating etc.
HEN-63
GTCOHEAT-E
Train crew (other) on-train: fainting due to train overheating (not leading to
evacuation)
HEN-63
GTCOTBIT-E
Train crew (other) on-train: animal/insect bite
HEN-63
GTCOTLUG-E
Train crew (other) on-train: struck by falling/displaced luggage
HEN-63
GOWOTSTF-E Other workforce on-train: slip, trip or fall
HEN-63
GTCOTELE-E
Train crew (other) on-train: electrical defect on the train
HEN-63
GTCOTOTH-E
Train crew (other) on-train: other
HEN-63
GTDOTOTH-E
Train crew (driver) on-train: other
HEN-63
GTCOTHAZ-E
Train crew (other) on-train: inhalation of hazardous substances/fumes
Normaliser
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
8.03E-07
3.62E-07
4.74E-07
4.68E-07
4.63E-07
1282.6
225.7
101.7
133.3
131.7
130.1
2.778
0.4412
0.3816
0.2607
0.2574
0.2544
100.00%
15.88%
13.74%
9.38%
9.27%
9.16%
D
D
D
D
D
Pass. trn mls
Tot. trn mls
Tot. trn mls
Pass. trn mls
Tot. trn mls
Tot. trn mls
Tot. trn mls
2.97E-07
2.47E-07
2.13E-07
1.73E-07
5.00E-08
7.00E-08
6.99E-08
83.40
82.33
71.00
48.67
16.67
23.33
23.31
0.1631
0.1610
0.1388
0.0952
0.0626
0.0456
0.0456
5.87%
5.79%
5.00%
3.43%
2.25%
1.64%
1.64%
D
D
D
D
D
D
D
Pass. jour
Pass. trn mls
2.04E-08
2.03E-09
23.00
0.5714
0.0450
0.0383
1.62%
1.38%
D
D
Pass. trn mls
Pass. trn mls
Pass. jour
Pass. trn mls
Pass. trn mls
Tot. trn mls
Pass. trn mls
6.90E-08
6.90E-08
8.36E-09
6.17E-08
4.98E-08
4.14E-08
4.84E-08
19.40
19.40
9.400
17.33
14.00
13.80
13.60
0.0379
0.0379
0.0353
0.0339
0.0274
0.0270
0.0266
1.37%
1.37%
1.27%
1.22%
0.99%
0.97%
0.96%
D
D
D
D
D
D
D
HEN-63
GOWOTINT-E
Other workforce on-train: caught by internal train doors (either slam or power)
Pass. jour
1.13E-08
12.70
0.0248
0.89%
D
HEN-63
GTDOTHAZ-E
Train crew (driver) on-train: inhalation of hazardous substances/fumes
Tot. trn mls
3.12E-08
10.40
0.0203
0.73%
D
HEN-63
HEN-63
HEN-63
HEN-63
GOWOTSHA-E
GOWOTDEF-E
GTDOTELE-E
GTDOTNOI-E
Other workforce on-train: caught by sharp object
Other workforce on-train: any other defect on the train
Train crew (driver) on-train: electrical defect on the train
Train crew (driver) on-train: exposed to noise eg detonators
Pass. jour
Pass. jour
Tot. trn mls
Tot. trn mls
6.52E-09
5.93E-09
1.80E-08
1.74E-08
7.333
6.667
6.000
5.800
0.0143
0.0130
0.0117
0.0113
0.52%
0.47%
0.42%
0.41%
D
D
D
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
113
Table B
Hazardous Event
Number
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
HEN-63
Precursor code
GOWOTSYR-E
GTCOTSYR-E
GTDOTBIT-E
GOWOTHAZ-E
GTWOTSTF-E
GOWOTLUG-E
GTWOTOBJ-E
GTCOTNOI-E
GTDOTSCA-E
GOWOTCAT-E
GTWOTDEF-E
GOWOTBIT-E
GOWOTSCA-E
GOWOTOTH-E
GTDOTLUG-E
GTWOTINT-E
Cause precursor description
Other workforce on-train: caught on needle/syringe
Train crew (other) on-train: caught on needle/syringe
Train crew (driver) on-train: animal/insect bite
Other workforce on-train: inhalation of hazardous substances/fumes
Track worker on-train: slip, trip or fall
Other workforce on-train: struck by falling/displaced luggage
Track worker on-train: strike against object eg fixed seating etc.
Train crew (other) on-train: exposed to noise eg detonators
Train crew (driver) on-train: scald/burn
Other workforce on-train: struck/crushed/trapped by catering trolley
Track worker on-train: other defect on the train
Other workforce on-train: animal/insect bite
Other workforce on-train: scald/burn
Other workforce on-train: other
Train crew (driver) on-train: struck by falling/displaced luggage
Track worker on-train: caught by internal train doors (either slam or power)
Normaliser
Pass. jour
Pass. trn mls
Tot. trn mls
Pass. jour
Trk wrkr hrs
Pass. jour
Trk wrkr hrs
Pass. trn mls
Tot. trn mls
Pass. jour
Trk wrkr hrs
Pass. jour
Pass. jour
Pass. jour
Tot. trn mls
Trk wrkr hrs
National
frequency
(events/
normaliser)
4.44E-09
1.78E-08
1.20E-08
3.02E-09
2.55E-08
1.78E-09
2.86E-08
5.69E-09
3.60E-09
1.02E-09
1.46E-08
7.11E-10
6.35E-10
5.93E-10
1.80E-09
7.81E-09
HEN-63
HEN-63
HEN-63
HEN-63
GTWOTSHA-E
GTDOTSYR-E
GOWOTELE-E
GTDOTCAT-E
Track worker on-train: caught by sharp object
Train crew (driver) on-train: caught on needle/syringe
Other workforce on-train: electrical defect on the train
Train crew (driver) on-train: struck/crushed/trapped by catering trolley
Trk wrkr hrs
Tot. trn mls
Pass. jour
Tot. trn mls
7.29E-09
1.20E-09
2.96E-10
6.00E-10
0.4000
0.4000
0.3333
0.2000
8.39E-04
7.82E-04
6.52E-04
3.91E-04
0.03%
0.03%
0.02%
0.01%
D
D
D
D
HEN-63
HEN-63
HEN-63
HEN-63
HEN-63
HEN-63
HEN-63
HEN-63
HEN-63
HEN-63
HEN-63
GTWOTOTH-E
GTWOTSCA-E
GTWOTCAT-E
GTWOTNOI-E
GTWOTELE-E
GTWOTHAZ-E
GTWOTLUG-E
GTWOTSYR-E
GTWOTBIT-E
GOWOTNOI-E
GTWOHEAT-E
Track worker on-train: other
Track worker on-train: scald/burn
Track worker on-train: struck/crushed/trapped by catering trolley
Track worker on-train: exposed to noise eg detonators
Track worker on-train: electrical defect on the train
Track worker on-train: inhalation of hazardous substances/fumes
Track worker on-train: struck by falling/displaced luggage
Track worker on-train: caught on needle/syringe
Track worker on-train: animal/insect bite
Other workforce on-train: exposed to noise eg detonators
Track worker on-train: fainting due to train overheating (not leading to
evacuation)
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Trk wrkr hrs
Pass. jour
Trk wrkr hrs
2.60E-09
2.60E-09
2.60E-09
0
0
0
0
0
0
0
0
0.1429
0.1429
0.1429
0
0
0
0
0
0
0
0
3.00E-04
3.00E-04
3.00E-04
0
0
0
0
0
0
0
0
0.01%
0.01%
0.01%
0%
0%
0%
0%
0%
0%
0%
0%
D
D
D
N
N
N
N
N
N
N
N
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
National
frequency
(events/ year)
5.000
5.000
4.000
3.400
1.400
2.000
1.571
1.600
1.200
1.143
0.8000
0.8000
0.7143
0.6667
0.6000
0.4286
Risk cont.
(FWI / year)
0.0098
0.0098
0.0078
0.0066
0.0054
0.0039
0.0033
0.0031
0.0023
0.0022
0.0017
0.0016
0.0014
0.0013
0.0012
8.99E-04
Risk cont.
% of total
HE risk
0.35%
0.35%
0.28%
0.24%
0.20%
0.14%
0.12%
0.11%
0.08%
0.08%
0.06%
0.06%
0.05%
0.05%
0.04%
0.03%
Deriv. of
prec. (D,
E, N)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
114
Table B
Hazardous Event
Number
Precursor code Cause precursor description
HEN-63
GOWOHEAT-E Other workforce on-train: fainting due to train overheating (not leading to
evacuation)
HEN-63
GTDOHEAT-E
Train crew (driver) on-train: fainting due to train overheating (not leading to
evacuation)
Normaliser
Pass. jour
National
frequency
(events/
normaliser)
0
National
frequency
(events/ year)
0
Risk cont.
(FWI / year)
0
Risk cont.
% of total
HE risk
0%
Deriv. of
prec. (D,
E, N)
N
Tot. trn mls
0
0
0
0%
N
Pass. jour
Pass. jour
Pass. jour
Pass. jour
1.81E-06
1.03E-06
1.13E-06
6.11E-07
5161.1
2038.4
1163.1
1271.9
687.6
8.495
5.082
2.900
0.3327
0.1799
100.00%
59.83%
34.14%
3.92%
2.12%
D
D
D
D
HEN-64 - Passenger assault
HEN-64
PSTPHYAS-E
HEN-64
POTPHYAS-E
HEN-64
PSTVERAS-E
HEN-64
POTVERAS-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
HEN-65 - Workforce assault
HEN-65
GOWSTPHY-E
HEN-65
GTCOTPHY-E
HEN-65
GTCOTVER-E
HEN-65
GTCSTPHY-E
HEN-65
GOWSTVER-E
HEN-65
GTDSTPHY-E
HEN-65
GTCSTVER-E
HEN-65
GTDOTPHY-E
HEN-65
GOWOTPHY-E
HEN-65
GTWNSPHY-E
Other workforce assault: physical on station concourse
Train crew (other) assault: physical on train
Train crew (other) assault: verbal on train
Train crew (other) assault: physical on station concourse
Other workforce assault: verbal on station concourse
Train crew (driver) assault: physical on station concourse
Train crew (other) assault: verbal on station concourse
Train crew (driver) assault: physical on train
Other workforce assault: physical on train
Track worker assault: physical not at station eg signal box, trackside etc
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
2.02E-06
1.42E-06
1.41E-06
4.42E-07
7.70E-07
1.28E-07
1.51E-07
6.88E-08
2.96E-08
2.49E-08
1862.0
568.9
399.7
395.0
124.3
216.3
36.00
42.33
19.33
8.333
7.000
3.560
1.350
0.9485
0.4460
0.2951
0.2443
0.0854
0.0478
0.0459
0.0198
0.0166
100.00%
37.92%
26.64%
12.53%
8.29%
6.86%
2.40%
1.34%
1.29%
0.56%
0.47%
D
D
D
D
D
D
D
D
D
D
HEN-65
HEN-65
HEN-65
GTDOTVER-E
GTDSTVER-E
GOWNSPHY-E
Train crew (driver) assault: verbal on train
Train crew (driver) assault: verbal on station concourse
Other workforce assault: physical not at station eg signal box, trackside etc
Pass. trn mls
Pass. trn mls
Pass. trn mls
4.27E-08
4.15E-08
1.57E-08
12.00
11.67
4.400
0.0136
0.0132
0.0104
0.38%
0.37%
0.29%
D
D
D
HEN-65
GTDNSPHY-E
Train crew (driver) assault: physical not at station eg signal box, trackside etc
Pass. trn mls
7.12E-09
2.000
0.0047
0.13%
D
HEN-65
HEN-65
GOWOTVER-E
GOWNSVER-E
Other workforce assault: verbal on train
Other workforce assault: verbal not at station eg signal box, trackside etc
Pass. trn mls
Pass. trn mls
1.07E-08
1.07E-08
3.000
3.000
0.0034
0.0034
0.10%
0.10%
D
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
115
Table B
Hazardous Event
Number
HEN-65
HEN-65
HEN-65
HEN-65
Precursor code
GTWSTPHY-E
GOWOTASS-E
GTCOTASS-E
GTDNSVER-E
Cause precursor description
Track worker assault: physical on station concourse
Other workforce assault: other
Train crew (other) assault: other
Train crew (driver) assault: verbal not at station eg signal box, trackside etc
Normaliser
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
National
frequency
(events/
normaliser)
4.74E-09
9.49E-09
7.12E-09
5.93E-09
HEN-65
GTCNSPHY-E
Train crew (other) assault: physical not at station eg signal box, trackside etc
Pass. trn mls
7.12E-10
0.2000
4.75E-04
0.01%
D
HEN-65
HEN-65
HEN-65
HEN-65
HEN-65
GTWOTPHY-E
GTDOTASS-E
GTWSTVER-E
GTWOTVER-E
GTCNSVER-E
Track worker assault: physical on train
Train crew (driver) assault: other
Track worker assault: verbal on station concourse
Track worker assault: verbal on train
Train crew (other) assault: verbal not at station eg signal box, trackside etc
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
Pass. trn mls
7.12E-10
1.42E-09
7.12E-10
0
0
0.2000
0.4000
0.2000
0
0
4.75E-04
4.52E-04
2.26E-04
0
0
0.01%
0.01%
0.01%
0%
0%
D
D
D
N
N
HEN-65
HEN-65
GTWOTASS-E
GTWNSVER-E
Track worker assault: other
Track worker assault: verbal not at station eg signal box, trackside etc
Pass. trn mls
Pass. trn mls
0
0
0
0
0
0
0%
0%
N
N
Station
Trk mts
Station
Trk mts
0.0339
1.72E-06
0.0212
6.47E-07
212.1
85.42
53.35
53.30
20.08
0.3678
0.2146
0.1340
0.0139
0.0053
100.00%
58.34%
36.44%
3.79%
1.43%
D
D
D
D
HEN-66 - MOP assault
HEN-66
KASSPHYS-E
HEN-66
KLIPHYS-E
HEN-66
KASSVERS-E
HEN-66
KLIVERS-E
MOP assault: physical on-station concourse or platform
MOP assault: physical lineside
MOP assault: verbal on-station concourse or platform
MOP assault: verbal lineside
National
frequency
(events/ year)
1.333
2.667
2.000
1.667
Risk cont.
(FWI / year)
0.0032
0.0030
0.0023
0.0019
Risk cont.
% of total
HE risk
0.09%
0.08%
0.06%
0.05%
Deriv. of
prec. (D,
E, N)
D
D
D
D
HEN-67 - MOP fall from platform onto track (no train present)
HEN-67
KPNLFALL-H
MOP under influence of alcohol/drugs fall from platform onto track (no train
present)
HEN-67
KPNGFALL-H
MOP fall from platform onto track (no train present) - general causes
Trk mts
3.22E-08
1.667
1.000
0.0301
0.0181
100.00%
60.00%
D
Trk mts
2.15E-08
0.6667
0.0121
40.00%
D
HEN-68 - MOP non-trespasser fall in stations
HEN-68
KNRCIFALLH
MOP non-trespasser fall on NRMI
Trk mts
3.16E-06
98.00
98.00
1.416
1.416
100.00%
100.00%
D
Version 5.5/May 2008
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
116
Table B
National
frequency
(events/
normaliser)
National
frequency
(events/ year)
Risk cont.
(FWI / year)
Risk cont.
% of total
HE risk
Deriv. of
prec. (D,
E, N)
Trk mts
1.72E-07
8.733
5.333
5.333
1.252
0.9127
0.9127
100.00%
72.87%
72.87%
D
Trk mts
9.66E-08
3.000
3.000
0.2887
0.2887
23.05%
23.05%
D
Trk mts
1.29E-08
0.4000
0.4000
0.0510
0.0510
4.07%
4.07%
D
Trk mts
6.44E-09
0.9429
0.2000
0.2000
0.1164
0.0276
0.0276
100.00%
23.72%
23.72%
D
Trk mts
1.93E-08
0.6000
0.6000
0.0723
0.0723
62.16%
62.16%
D
Trk mts
4.60E-09
0.1429
0.1429
0.0164
0.0164
14.12%
14.12%
D
HEN-73 - Passenger manual handling
HEN-73
PMANHAND-E Passenger injury through manual handling
Pass. trn mls
2.13E-08
6.000
6.000
0.1112
0.1112
100.00%
100.00%
D
HEN-74 - Workforce manual handling
HEN-74
GTRWKMAN-E Track worker injury through manual handling
HEN-74
GOTWKMAN-E Other workforce injury through manual handling
HEN-74
GTCOTMAN-E Train crew (other) injury through manual handling
HEN-74
GTCDRMAN-E Train crew (driver) injury through manual handling
Trk wrkr hrs
Pass. jour
Pass. trn mls
Tot. trn mls
2.84E-06
1.70E-07
3.19E-07
9.60E-08
469.3
156.0
191.7
89.67
32.00
1.105
0.4525
0.3809
0.2280
0.0439
100.00%
40.94%
34.46%
20.63%
3.97%
D
D
D
D
Hazardous Event
Number
Precursor code Cause precursor description
HEN-71 - Adult trespass fall/jump from outside onto the mainline railway
HEN-71A - Adult trespass fall/jump from outside onto the mainline railway from bridge
HEN-71A
KFALLBRG-H
Adult trespasser fall/jump from outside onto the mainline railway from bridge,
footbridge
HEN-71B - Adult trespass fall/jump from outside onto the mainline railway from wall, bank, roof or fence
HEN-71B
KFALLOTH-H
Adult trespasser fall/jump from outside onto the mainline railway from wall,
bank, roof, fence, etc
HEN-71C - Adult trespasser fall/jump from outside onto the mainline railway from other eg viaduct
HEN-71C
KFALLOTT-H
Adult trespasser fall/jump from outside onto the mainline railway from other
eg viaduct
HEN-72 - Child trespasser fall/jump from outside onto the mainline railway
HEN-72A - Child trespass fall/jump from outside onto the mainline railway from bridge
HEN-72A
JFALLBRG-H
Child trespasser fall/jump from outside onto the mainline railway from bridge,
footbridge
HEN-72B - Child trespass fall/jump from outside onto the mainline railway from wall, bank, roof or fence
HEN-72B
JFALLOTH-H
Child trespasser fall/jump from outside onto the mainline railway from wall,
bank, roof, fence, etc
HEN-72C - Child trespasser fall/jump from outside onto the mainline railway from other eg viaduct
HEN-72C
JFALLOTT-H
Child trespasser fall/jump from outside onto the mainline railway from other
eg viaduct
Version 5.5/May 2008
Normaliser
Table B: Precursor risk contributions (fatalities and weighted injuries per year)
117