[insert Cover.jpg]
SMTH
NR/SIG/10665
Signal Maintenance Testing Handbook
Means of Compliance
Publication Date: 2 March 2013
Contents
1 Job roles
4
2 Risk mitigation
4
3 Reference documentation
4
4 Roles and Responsibilities
4
5 Definitions
4
6 NR/ROSE Queries or Comments
4
7 NR/ROSE Implementations
4
8 Missing and Late Maintenance
5
Appendix A Index of Modules
6
User information
This Network Rail standard contains colour-coding according to the following Red–Amber–Green
classification.
Red requirements – No deviations, could stop the railway
• Red requirements shall always be complied with and achieved.
• Red requirements shall be presented in a red box with the word “shall” or
expressed as a direct instruction.
• Accountability for the efficacy of red requirements lies with the Professional
Head/Standard Owner.
• Red requirements are monitored for compliance.
• Corrective actions shall be enforced if deviations are discovered through functional
checks (e.g. engineering verification visits, audit or Operations Self-Assurance).
Amber requirements – Controlled deviations, approved risk analysis and mitigation
• Amber requirements shall be complied with unless deviation has been approved
in advance.
• Amber requirements shall be presented with an amber sidebar and with the word
“shall” or expressed as a direct instruction.
• Accountability for the efficacy of these requirements lies with the Professional
Head/Standard Owner, or their nominated Delegated Authority.
• Amber requirements are monitored for compliance.
• Deviations may be permitted. Deviations are approved by the Standard Owner or
through existing Delegated Authority arrangements.
• Corrective actions shall be enforced if non-approved deviations are discovered
through functional checks (e.g. engineering verification visits, audit or Operations
Self-Assurance).
Green – Guidance
• Guidance is based on good practice. Guidance represents supporting information to
help achieve Red and Amber requirements.
• Guidance shall be presented with a dotted green sidebar and with the word “should”
(usually in notes) or as a direct instruction.
• Guidance is not mandatory and is not monitored for compliance.
• Alternative solutions may be used. Alternative solutions do not need to be formally
approved.
• Decisions made by a competent person to use alternative solutions should be
backed up by appropriate evidence or documentation.
1 Job roles
This manual applies to Signalling Technicians.
2 Risk mitigation
This manual provides controls to mitigate the high level risk on ‘breakdown of safe separation of
trains.’
3 Reference documentat
NR/L2/SIG/10662
Process for the Introduction of New or Revised Maintenance
Regimes
NR/GN/SIG/10670
ROSE Project - Implementation Guidance
NR/L3/SIG/10663
Signal Maintenance Specifications
NR/L2/SIG/11755
DC Track Circuits
TI047
Zero Tolerance to Earth Faults
NR/L2/SIG/11752
Train Detection
NR/L1/OPS/010
Signals Passed at Danger and Signal Reversions
NR/L2/SIG/10661
Signalling Maintenance Task Intervals
NR/L3/TRK/1202
S+C systems - Flat bottom full depth switches - Management of
fixed stretcher bar assemblies, lock stretcher bars fastenings and
the associated defects
NR/L2/TRK/001
Inspection and Maintenance of Permanent Way
NR/L2/SIG/11655
Management of Signalling Wire and Cable Insulation Degradation
4 Roles and Responsibilities
A full breakdown of roles and responsibilities are given in NR/L2/SIG/10662.
5 Definitions
For the purposes of this standard, the following terms and definitions apply.
Default Maintenance
Regime
The maintenance regime to be used on all signalling assets on
Network Rail infrastructure apart from alternative regimes on
certain equipment types that have be authorised following the
process detailed in NR/L2/SIG/10662
Alternative
Maintenance Regime
This can be any maintenance regime authorised by
NR/L2/SIG/10662, example being Reliability Centred
Maintenance (RCM)
6 NR/ROSE Queries or Comments
If you have any queries or comments about any of the NR/ROSE suite, contact in the first instant
should be made to your SM(S) or line manager. If the query or comment cannot be answered at
this level, the SM(S) or line manger should contact the HQ ROSE team.
7 NR/ROSE Implementations
Reliability Centred Maintenance of Signalling Equipment regimes can be introduced on a full or
pilot basis with the agreement of the Professional Head [Signals & Telecoms].
ROSE regimes detailed in this section have been developed using issue 3 or issue 4 of
NR/L2/SIG10662. Implementation guidance is provided in NR/GN/SIG/10670.
8 Missing and Late Maintenance
No scheduled maintenance interval may exceed the stated interval. Maintenance may be
undertaken ‘early’, provided this is within one week of the scheduled maintenance for 13 weekly
services. Longer interval services may be undertaken ‘early’ within one month of scheduled
service. On a ‘one off’ basis, longer services may be undertaken earlier that ‘within one month of
scheduled service’ in order to reschedule maintenance to better realise workload savings from
ROSE Scheduled maintenance services that are not completed fully or are only partly completed
by the scheduled day to be classed as ‘late maintenance’. ‘Late maintenance’ to be reprogrammed
within 25% of 13 weeks for all A services, regardless of planned interval. For B services, late
maintenance shall normally be reprogrammed within 25% of the scheduled maintenance interval.
‘Late maintenance’ need not be reported for the purposes of this standard – unless (in the cases of
the shorter scheduled intervals) the service is completely cancelled.
Any late maintenance not completed within these intervals to be classed as ‘missed maintenance’.
Missed maintenance shall be reported to the Signal & Telecoms Maintenance Engineer.
Wherever possible, ‘missed maintenance’ shall be caught up. Should such catching up prove
difficult, the Signal & Telecoms Maintenance Engineer shall assess the risk of the ‘missed
maintenance’. The risk assessment shall consider the maintenance history of that item, its failure
rate, and any safety hazards that might be introduced by deferring the service.
Where the risk assessment at the end of the ‘late maintenance’\period (as defined above) indicates
that safety is compromised, special arrangements shall be made to catch up the maintenance
without further delay.
Scheduled maintenance services shall not be cancelled without the permission of the Professional
Head [Signals & Telecoms].
Where an additional (between scheduled interval) visit to the equipment is necessary, e.g.
maintenance tests as a result of faulting activity, any remedial action taken shall be recorded and
taken into account in any subsequently proposed interval change. Such intervention shall not affect
the scheduled intervals from continuing as agreed.
NOTE The revised NR/ROSE maintenance regimes shall only be carried out on equipment where
the implementation process has been completed.
NOTE The NR/SMS tasks and tests referred to in this document are the issues that are detailed in
the current issue of NR/L3/SIG/10663.
Appendix A
Index of Modules
Module
Title
Issue
Date
001
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – Criteria and Frequencies
3
02/03/2013
002
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – FPL Testing Criteria
1
03/09/2011
010
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – NR/ROSE/AX15 Axle Counter
Thales AzLM
1
03/09/2011
011
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – NR/ROSE/Test/253 EBITRACK
200
2
02/03/2013
012
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – NR/ROSE/Test/254 SF15/U Type
Aster Track Circuit Test
1
03/09/2011
013
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – NR/ROSE/Test/057
Uninterruptible Power Supplies (UPS) Tests
1
03/09/2011
014
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – NR/ROSE/SG16 VMS LED
Signal
1
03/09/2011
015
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – Colour Light Index
1
03/12/2011
016
Miniature Stop Light (MSL) & Miniature Warning Light
(MWL) Level crossing with Dorman LED units
(NR/ROSE/LC-A7/1)
1
02/03/2013
017
Miniature Stop Light Crossing (MSL) Test Plan
(NR/ROSE/LX74/1)
1
02/03/2013
018
AC 50 Hz Track Circuit - Service A (NR/ROSE/TCA1/1)
1
02/03/2013
019
FS2600 Track Circuit (NR/ROSE/TC-A2/1)
1
02/03/2013
020
AC 50 Hz Track Circuit - Service B (NR/ROSE/TCB1/1)
1
02/03/2013
021
Vaughan Harmon Small Train Describer Type 4M
(NR/ROSE/TD-A1/1)
1
02/03/2013
070
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – ROSE LC Index
2
03/03/2012
End
Module 001
Reliability Centred Maintenance of Signalling
Equipment (ROSE) – Criteria and Frequencies
Endorsement and Authorisation
For endorsement and authorisation, please refer to NR/SIG/10665
Contents
1 Tasks and Tests Undertaken to NR/ROSE Periodicity
9
1.1 AWS Permanent and Electro-Magnets (incl PSR Permanent Magnets)
9
1.2 DC Track Circuits
11
1.3 Disconnection Boxes
13
1.4 Location Cases or Portable Equipment Rooms (double cut lineside circuits & SSI only) 13
1.5 HVI Track Circuits
17
1.6 PLODS
17
1.7 Reed Single Rail TCs
17
1.8 Reflective Boards and signs
18
1.9 TCAIDS
18
1.10 TOWS
18
1.11 FPL Testing Frequency
19
1.12 Western Region Quick Release Track Circuits
19
2 Tasks and Tests Undertaken to NR/ROSE Specifications
19
2.1 AZLM Axle Counter
20
2.2 TI21 Track Circuits
20
2.3 Aster U type/SF15 Track Circuits
21
2.4 TPWS
21
2.5 AHB Level crossing with BR843 barriers
22
2.6 VMS Searchlight Signal
22
2.7 LED Signals
23
2.8 SL35 Filament Colour Light Signals
24
2.9 Howells SL35 LED replacement module
25
2.10 AC 50 Hz Track Circuit (Single and double rail types)
26
2.11 FS2600 Track Circuits
27
2.12 Vaughan Harmon Small Train Describer (4M)
27
2.13 TRTS, CD & RA Platform Plungers
28
2.14 Miniature Stop Light (MSL) & Miniature Warning Light (MWL) Level Crossing with Dorman
LED units
28
1 Tasks and Tests Undertaken to NR/ROSE Periodicity
This section contains the details of tasks and tests which are undertaken to a NR/SMS
specification but to a NR/ROSE frequency
1.1 AWS Permanent and Electro-Magnets (incl PSR Permanent Magnets)
A new revised ROSE regime has been introduced as part of an ongoing process of review and
improvement.
At present DUs may chose to remain on the existing ROSE regime of annual maintenance or may
move to the revised ROSE regime outlined below
Maintenance Specification
NR/SMS/AW11 and NR/SMS/Test/024
Scope
The regime change applies to AWS Permanent, Electro
and Suppressor Magnets, PSR Permanent Magnets
maintained by signalling teams.
Exclusions
This does not apply to AWS magnets which are known to
have security problems (i.e. where sleepers are rotten) or
which have a history of being damaged by train mounted
equipment
Changes
Generally the A service can be conducted at 52 weekly
intervals.
Prerequisites
None
Revised ROSE
Maintenance Specification
Removal of NR/SMS/AW11 and NR/SMS/Test/024
Scope
The regime change applies to AWS Permanent, Electro
and Suppressor Magnets, PSR Permanent Magnets
maintained by signalling teams.
Changes
Maintenance of AWS may now be Condition Based, where
routine maintenance is withdrawn if the asset meets the
Prerequisites below. If the asset condition changes
maintenance must be reintroduced or the asset condition
improved.
Exclusions
This does not apply to AWS magnets which are known to
have security problems (i.e. where sleepers are rotten) or
which have a history of being damaged by train mounted
equipment. These continue to require maintenance.
Prerequisites
Before moving any AWS to the revised Rose, it must be
checked for any earth on the AWS Busbar, and that both
the cable entry gland and termination box lid seal is
effective, any defects must be corrected first.
[insert un number fig_1]
1.2 DC Track Circuits
1.2.1 Medium Voltage
These NR/ROSE amendments only apply to the TCs detailed in the scope.
Maintenance
Specification
NR/SMS/TC01 and NR/SMS/Test/251
The regime change applies to
Scope
Exclusions
 standard AC-immune DC track circuits with nonadjustable feedsets (medium voltage) as defined in
NR/L2/SIG/11755 section 4.2.1.

BR904 feedsets

Westatic R4/R4B feedsets
Any applicable track circuits that contain any insulated rail
joints (IRJ’s) listed below shall be excluded from the pilot:
 Un-staggered IRJs (Un-staggered joints in the context of
this standard are insulated rail joints that maintain electrical
separation between two abutting sections of running rail that
are of the same polarity. In this situation, if the insulated rail
joint fails there is a risk that the feed of one track circuit will
operate the relay of the abutting track circuit, even when the
abutting track circuit feed is shunted by the wheels of a rail
vehicle.’)

(ii) Any joint that abuts a different type of DC track circuit

(iii) Any joint at the end of traction immunised railway
This list is not exhaustive and other joints may warrant
special consideration due to performance or safety issues.
Any track circuit fitted with NT2A type track relaysthat have
not been modified with a Domed Residual Pin
Changes
Generally the A service can be conducted at 26 weekly
intervals.
Prerequisites
Each track circuit that that does not have a feed end relay,
shall at the earliest opportunity, undergo a residual voltage
check in accordance with step 3 of NR/SMS/Test/251. If
<30% of the minimum drop away voltage cannot be
achieved, the track circuit should be excluded from this
change and the reasons behind the residual voltage values
be investigated.
1.2.2 Low Voltage (Primary cell fed)
Maintenance
Specification
NR/SMS/TC01 and NR/SMS/Test/251
Scope
The regime change applies to Primary Cell Low Voltage DC
Track Circuits with at least 9 ohm relays as defined in
NR/L2/SIG/11755 section 4.2.1
Changes
Generally the A service can be conducted at 26 weekly
intervals
It is recommended that on the annual ‘B’ service the primary
cells are replaced.
Primary Cells
To maintain reliability using this replacement frequency, the
capacity of the cells used should be based on the service
frequency, and the time the track circuit is in an occupied
state.
There are two versions of cells which should be used
 AS10/1 600Ah (cat no. 54/003198) for low use track
circuits and
 AS10/2 1200 Ah (cat no. 54/003199) for heavily used
track circuits
Any Track circuit with less than 9 ohm relays
Any track circuits that contain any insulated rail joints
(IRJ’s) listed below shall be excluded from the pilot:

Un-staggered IRJs (Un-staggered joints in the context of
 this document are insulated rail joints that maintain
electrical separation
 between two abutting sections of running rail that are of
the
 same polarity. In this situation, if the insulated rail joint
fails
Exclusions
 there is a risk that the feed of one track circuit will
operate the
 relay of the abutting track circuit, even when the abutting
track circuit feed is shunted by the wheels of a rail vehicle.’)

(ii) Any joint that abuts a different type of DC track circuit

(iii) Any joint at the end of traction immunised railway
 This list is not exhaustive and other joints may warrant
special

consideration due to performance or safety issues.
Other types of LV DC track circuits.- work is underway on LV
DC TCs which use secondary cells
Prerequisites
Each track circuit that that does not have a feed end relay,
shall at the earliest opportunity, undergo a residual voltage
check in accordance with step 3 of NR/SMS/Test/251. If
<30% of the minimum drop away voltage cannot be
achieved, the track circuit should be excluded from this
change and the reasons behind the residual voltage values
be investigated.
1.3 Disconnection Boxes
Disconnection Box maintenance is currently included within SMS EL21. With the introduction of
new frequencies for ROSE assets, this can lead to the situation where the disconnection box is
maintained more frequently than the equipment associated with it. Disconnection boxes associated
with ROSE assets should be maintained at the same frequency as the asset (typically 6 or 12
months). This is covered by a national TNC no. 5597 issued 09/09/2008.
1.4 Location Cases or Portable Equipment Rooms (double cut lineside
circuits & SSI only)
The scope is extend to include Portable Equipment Rooms.
The change in maintenance frequency from 26 weeks to 52 weeks for those Location Cases &
Portable Equipment Rooms that meet the extended selection criteria.
Maintenance
NR/SMS/EL21, NR/SMS/EL31 and associated tests
Specification
Scope
The regime applies to
 double cut line-side circuits
 location cases or PER with SSI
 Ansaldo Location cases (used on the Manchester South
Scheme)
Changes
If the location case contains cable terminations only (there is
no functional equipment, busbars, ELD, or batteries therefore
sections 3 to 8 of EL21do not apply) then sections 1 and 2 of
the SMS may be undertaken as a Service B along with
sections 10, 11, and 12.
1.4.1 Application Criteria
Requirements
Double
Cut
Ccts &
SSI
Wire
Degradatio
n (Normal
or Fair)
Good
Cable
Condition/
History
ONLY
secondary
cells of
this type
allowed
Alcad
Vantage &
M ranges
EnerSys
Cyclon
Installed >=5
years or of
unknown age
Newly installed
<5 years old
Or
Non RoSE
No
No
No
No
No
No
Basic
RoSE
Yes
Yes
Yes
Yes
No
No
Extended
RoSE
Yes
Yes
Yes
Yes
No outstanding
commissioning
defects
Site visit must
indicate good
condition
1.4.2 Explanation of above table
Requirements
Explanation
Double Cut Ccts & SSI
The regime applies to location cases and
Portable Equipment Rooms with double cut
line-side circuits and SSI only
Wire Degradation (Normal or Fair)
The location case or PER must not have a
wire degradation class of poor, severe or
extreme (as per NR/L2/SIG/11655)
Good Cable Condition/History
The location case or PER must not have a
poor cable condition/history of cable failure
(see Important Information & Appendix G)
ONLY secondary cells of this type allowed
Alcad Vantage & M ranges
EnerSys Cyclon
Location Cases or PER must not contain
any of the following - wet cell batteries of
the older Lead Acid or unsealed NiCad
types (Batteries)
Newly installed <5 years old
See Appendix E (Application flowchart)
Installed >=5 years or of unknown age
See Appendix E (Application flowchart)
1.4.3 Data Loggers Contained within Location Case or PER
Data Loggers which are not remotely monitored need to be maintained at their current frequency.
Generally, remotely monitored loggers can be maintained at the same frequency as the location
case or PER
1.4.4 Changes to frequencies
Regime
Location Cases
Portable Equipment Rooms
EL21A
EL21B
EL31A
EL31B
Non RoSE
13 Weekly
52 weekly
13 Weekly
52 weekly
Basic RoSE
26 Weekly
52 weekly
26 Weekly
52 weekly
Extended
RoSE
52 weekly
52 weekly
52 weekly
52 weekly
1.4.5 Application FlowChart
[insert un number fig_2]
1.4.6 Cable Condition Assessment FlowChart
[insert un number fig_3]
1.5 HVI Track Circuits
Maintenance
Specification
NR/SMS/TC01 and NR/SMS/Test/255
Scope
The regime change applies to all High Voltage Impulse (HVI)
track circuits.
Exclusions
None (the previous exclusion for TCs with a track relay that is
outside the 10 year reservicing period has beed withdrawn).
Changes
Generally the A service can be conducted at 26 weekly
intervals.
Any track circuit that contains parallel bonding shall have the
following checks undertaken on them prior to implementation:
Prerequisites
1) the bonding arrangements in place are compliant with the
requirements of section 4.4 of NR/L2/SIG/11752
2) The bonding is in general good condition i.e.
mechanically sound, clipped and protected where necessary
3) The bonding has sound electrical connections
1.6 PLODS
Maintenance
Specification
NR/SMS/SW01
Scope
Patrollers Lock out devices currently maintained under
NR/SMS/SW01
Exclusions
Patrolman’s lockout device in the Manchester (Ansaldo) area
currently maintained under NR/SMS/SW03
Maintenance regime
The service can be conducted annually.
Prerequisites
None.
1.7 Reed Single Rail TCs
Maintenance
Specification
NR/SMS/TC01 and NR/SMS/Test/257
Scope
The regime applies to Reed type RT TCs in single rail jointed
mode
Exclusions
TCs with parallel bonding which is not compliant with the
requirements of section F part 4.4 of NR/L2/SIG/11752
Changes
Generally the A service can be conducted at 26 weekly
intervals.
Prerequisites
None
1.8 Reflective Boards and signs
Maintenance
Specification
NR/SMS/SG20
Scope
Exclusions
All signs included within NR/SMS/SG20

Signs in dirty or hostile environments

Signs in areas prone to vandalism

Signs which are prone to vegetation overgrowth
 Signs which are in poor condition (e.g. rusted mounting
posts/fixings or on unstable ground)
 Externally lit signs if the lighting source is considered
likely to fail in less than a year
The A service for signs in good condition can be undertaken
annually.
Changes
In addition signs which are attached to or adjacent to other
signalling assets (for example signals, level crossings)
should be given a visual check and, if necessary cleaned,
when at site for other maintenance activities.
Prerequisites
None
1.9 TCAIDS
Maintenance
Specification
NR/SMS/TC91, NR/SMS/Test 043

A1 service for all TCAIDS

A2 service for TCAIDS in continuous service only
Scope
TCAIDS
Exclusions
None
Maintenance regime
The service can be conducted annually.
Prerequisites
None
1.10 TOWS
Maintenance
Specification
NR/SMS/SW02
Scope
Train Operated Warning systems
Exclusions
None
Maintenance regime
The service can be conducted annually.
Prerequisites
A risk assessment is advised if the controlling TC has a
history of wsf or failure to operate due to leaf fall or rail head
contamination; this does not impact on the maintenance
requirement.
1.11 FPL Testing Frequency
Purpose
This process is to provide guidance to delivery units involved
in the application and management of Facing Point Lock
(FPL) rationalisation.
The process is detailed in Part B of this standard
Background:
RoSE has identified opportunities to rationalise the FPL
testing for many point ends.
Scope
This is detailed in NR/L2/SIG/10665/Mod 002 Clause 1.1.2
of the process.
Missed Maintenance
Missed maintenance intervals shall be as per
NR/L2/SIG/10661.
Assets
Point ends which fall within the scope.
1.12 Western Region Quick Release Track Circuits
Note: These NR/ROSE amendments only apply to the TCs detailed in the scope.
Maintenance
Specification
NR/SMS/TC01 and NR/SMS/Test/256
Scope
The regime change applies to all Western Region Quick
Release Track circuits as defined in NR/L3/SIG/11303,
Appendix 2P60
any applicable track circuits that contain any insulated rail
joints (IBJs) listed below shall be excluded from the pilot:
Exclusions
 Un-staggered IBJs (Un-staggered joints in the context of
this TI are insulated rail joints that maintain electrical
separation between two abutting sections of running rail that
are at the same phase.
In this situation, if the insulated rail joint fails there is a risk
that the feed of one track circuit will operate the relay of the
abutting track circuit, even when the abutting track circuit
feed is shunted by the wheels of a rail vehicle.’)
This list is not exhaustive and other joints may warrant
special consideration due to performance or safety issues.
Changes
The A service can be conducted at 364 days. The B service
frequency is unchanged
Pre Requisites
A full A and B service must be carried out on each
applicable asset before it can be considered transferable on
to the new amended ROSE service frequency.
2 Tasks and Tests Undertaken to NR/ROSE Specifications
This section contains the details of tasks and tests which are undertaken to a NR/ROSE
specification.
2.1 AZLM Axle Counter
Maintenance
Specification
NR/ROSE/AX15
This specification is detailed in NR/L3/SIG/10665/Mod 010
Scope
The regime change applies to AZLM Axle Counters, It
includes the ACE, EAK and Detection Heads.
Exclusions
Other types of Axle Counters.
Generally the B1 and B2 service can be conducted annually.
A minimum 3 monthly download in accordance with the
procedure laid down in the Thales (formally Alcatel)
Operating Instructions should be undertaken (regular
service).
Changes
A download shall be conducted for axle counter areas which
have been disturbed due to track maintenance activites as
soon as practicable after the line is handed back, certainly
within 1 week
The download procedure shall also be applied for axle
counter areas that require a more frequent download (newly
installed sections, sections under monitoring due to failures
etc).
Prerequisites
All of the detection heads for the axle counter sections within
the trial shall be set up to the criteria laid down in
NR/L3/SIG/10665/Mod 010 (NR/ROSE/AX15) at or before
the first service under the new regime.
Staff involved in downloading and interpreting the data shall
be competent in these actions.
2.2 TI21 Track Circuits
Maintenance
Specification
NR/ROSE/Test/253 linked from NR/SMS/TC01
This specification is detailed in NR/L3/SIG/10665/Mod 011
Maintenance
Specification
NR/ROSE/Test/253 linked from NR/SMS/TC01
This specification is detailed in NR/L3/SIG/10665/Mod 011
TI21 track circuits may be used in a number of
configurations:
 AC and DC traction in single rail configuration using
ETUs or TCUs.
Scope:
 AC and DC traction in double rail configuration using
TTUs for jointless or ETU for jointed track circuits.

Non-electrified areas
Note: IRJs of abutting TCs of different types are covered in
the SMS for that type of TC
Exclusions
Local managers retain the option to undertake maintenance
more frequently at any individual TC
Generally the A1 service can be conducted at 26 weekly
intervals.
Changes
The A2 service (drop shunt test) shall normally be
undertaken at 52 weekly intervals
NR/ROSE/Test/253 shall be used in place of
NR/SMS/Test/253
Prerequisites
Teams undertaking the new maintenance regime shall be in
possession of and competent in the use of an approved TI21
frequency selective meter.
2.3 Aster U type/SF15 Track Circuits
Maintenance
Specification
NR/ROSE/Test/254
Note: This is a RoSE SMS which has different tasks from
NR/SMS/Test/254. It is linked from NR/SMS/TC01.
Scope:
The regime change
applies to
Exclusions
Changes
Prerequisites
The regime change applies to all Aster U type/SF15 TCs
including those through S&C.
Note: IRJs of abutting TCs of different types are covered in
the SMS for that type of TC
Local managers retain the option to undertake maintenance
more frequently at any individual TC
Generally the A service can be conducted at 52 weekly
intervals.
NR/ROSE/Test/254 shall be used in place of
NR/SMS/Test/254.
Track circuit to undergo Service A & B including the
maintenance test of NR/ROSE/Test/254 at the first visit.
Teams undertaking the new maintenance regime shall be in
possession of and competent in the use of an approved
Aster frequency selective meter.
2.4 TPWS
Maintenance
Specification
NR/SMS/TP11, NR/SMS/Test/025, NR/ROSE/Test/057
Scope
The regime change applies to all TPWS installations which
have fault detection currently maintained under SMS.
Fault detection
A TPWS installation shall be deemed to have fault detection
if the installation has an approved means of identifying that
the TPWS equipment has failed, which is sufficient to initiate
an unscheduled maintenance intervention. For example, for
TPWS failure conditions indicated to the Signaller provided
by lamp proving (ECR, EKR) or the FIU (Failure Indication
Unit), First Filament Failure faults indicated via an SSI
technicians’ terminal.
TPWS without fault detection.
Exclusions
TPWS with Self-Powered OSS (SPOSS)
Lineside Status Indicator (LSI)
Changes
TPWS with fault detection - A services shall be undertaken
12-monthly
Prerequisites
None
2.5 AHB Level crossing with BR843 barriers
Maintenance
Specification
NR/ROSE/LC-M1/1, NR/ROSE/LC-A1/1, NR/ROSE/LCB1/1, NR/ROSE/LC-A1/2, NR/ROSE/LC-A2/1,
NR/ROSE/LC-A3/1, NR/ROSE/LC-B3/1, NR/ROSE/LCB4/1, NR/ROSE/LC-A5/1, NR/ROSE/LC-A6/1,
NR/ROSE/LC-A7/1, NR/ROSE/LX70/1
Please note that these specifications are formatted for best
display on the handheld device. Future ROSE maintenance
specifications will follow this format
Scope
The regime applies to Automatic Half Barrier level crossing
fitted with BR843 barrier machines.
Exclusions
Those level crossing controlled by Predictor circuitry
Changes
A new style of SMS has been introduced for AHB level
crossing that fall within the scope of this regime. This
includes a regular service at 3 months, with a minor service
extended to 6 months. The ‘non intrusive’ part of the current
NR/SMS/LX70 has been merged with a revised major yearly
service. The ‘intrusive’ part of the current NR/SMS/LX70 has
been included in a NR/ROSE/LX70/1 test.
Prerequisites
In dirty or hostile environments additional cleaning should be
scheduled at suitable intervals for affected Road Lights
(WigWags)
2.6 VMS Searchlight Signal
Maintenance
Specification
NR/ROSE/SG-A1/1, NR/ROSE/SG-A5/1, NR/ROSE/SGA7/1, NR/ROSE/SG-A8/1
Please note that this specification is formatted for best
display on the handheld device. Future ROSE maintenance
specifications will follow this format
The new regime applies to VMS Searchlight Signals
mounted on modular or conventional posts or gantries.
Scope
VMS Route indicators are included
SPRS are included
SPTs associated with the signal can be maintained at the
same frequency as the signal head
Exclusions
None
Maintenance regime
The service can be conducted annually.
Prerequisites
None.
2.7 LED Signals
Maintenance
Specification
NR/ROSE/SG-A1/1, NR/ROSE/SG-A4/1, NR/ROSE/SGA6/1, NR/ROSE/SG-A7/1, NR/ROSE/SG-A8/1
Please note that this specification is formatted for best
display on the handheld device. Future ROSE maintenance
specifications will follow this format
Scope
The regime change applies to LED signals which currently
have product approval (manufacturers Dorman, SignalHouse
and VMS). It includes main signals, banner repeaters,
position light signals and route indicators. Other non_LED
indications associated with these signals, e.g. theatre, route
indicators, junction route indicators are included, subject to
suitable lamp life, as are SPTs and SPRS. Crown posts are
also included.
Exclusions
None
The A service can be conducted annually.
Changes
Ground position light signals should be checked for
cleanliness at 26 weekly intervals.
In dirty or hostile environments additional cleaning should be
scheduled at suitable intervals for all affected signals.
Prerequisites
All signal covers shall be cleaned thoroughly on the first
maintenance visit of th.e new regime.
Alignment shall be set in accordance with TI151 where
relevant.
2.8 SL35 Filament Colour Light Signals
Maintenance
Specification
NR/ROSE/SG-A1/1, NR/ROSE/SG-A2/1, NR/ROSE/SGA6/1, NR/ROSE/SG-A7/1, NR/ROSE/SG-A8/1
Please note that this specification is formatted for best
display on the handheld device. Future ROSE maintenance
specifications will follow this format
The regime change applies to
Colour light signals with SL35 long life (8K hrs) lamps fitted in
the normally lit aspect and with full lamp proving of the main
signal. However the Professional Head [Signals & Telecoms]
has stipulated that all main aspects are fitted with 8000 hour
lamps before or at the first B service
Scope

Junction route indicators (PLJIs)

CD/RA/off indicators

Theatre route indicators (ANRIs)
 Subsidiary Position Light Signals associated with the
main signal
 SPTs (including SPTs mounted separately from the
signal post)
 Signal posts and mountings within the scope of signal
engineering

Crown posts.
Exclusions

SL35 signals in dirty or hostile environments

Signals with flashing aspects

SPAD indicators

LED signals are addressed as a separate analysis.
 Other lamps, SL34 and SL17 have a shorter lamp life
and are therefore not included in this approval when they are
fitted to the main aspect

Searchlight signals are not included,

FOCLs (due to the small population).
 Multi-SPAD signals - during pilot only (as defined in
NR/L1/OPS/010)
Generally the A service can be conducted at 26 weekly
intervals.
Changes
Prerequisites
This change in frequency is not applicable to signals in
hostile/dirty environments where the cleaning interval needs
to be shorter. Note which signals should remain at 13 weekly
or more frequent.
Long life (8000hr) SL35 lamps shall be installed in all main
aspects at or before the first B service under the new regime.
Each signal lens should be cleaned at the first visit of the
new regime
2.9 Howells SL35 LED replacement module
Maintenance
Specification
NR/ROSE/SG-A1/1, NR/ROSE/SG-A3/1, NR/ROSE/SGA6/1, NR/ROSE/SG-A7/1, NR/ROSE/SG-A8/1
Please note that this specification is formatted for best
display on the handheld device. Future ROSE maintenance
specifications will follow this format
The new regime applies to Colour Light Signals and Route
indicators fitted with Howells LED SL35 modules mounted on
conventional posts or gantries.
Scope

Junction route indicators (PLJIs)

CD/RA/off indicators

Theatre route indicators (ANRIs)
 Subsidiary Position Light Signals associated with the
main signal
 SPTs (including SPTs mounted separately from the
signal post)
 Signal posts and mountings within the scope of signal
engineering

Crown posts.
Exclusions

Signals in dirty or hostile environments

Signals with flashing aspects

SPAD indicators
Maintenance Regime
The service can be conducted annually, but those Signals in
dirty or hostile environments may require to be cleaned every
6 months
Prerequisites
All main aspect lamps must be fitted with the Howells LED
units. A mixture of 8000 hrs lamps and LED modules are not
permitted on the same signal.
2.10 AC 50 Hz Track Circuit (Single and double rail types)
Maintenance
Specification
NR/ROSE/TC-A1/1, NR/ROSE/TC-B1/1
Scope
The regime change applies to standard 50Hz AC track
circuits
Exclusions
Any applicable track circuits that contain any insulated rail
joints
(IRJ’s) listed below shall be excluded from the regime:
 Un-staggered IRJs (Un-staggered joints in the context of
this standard are insulated rail joints that maintain electrical
separation between two abutting sections of running rail that
are incorrectly phased.
In this situation, if the insulated rail joint fails there is a
risk that the feed of one track circuit will operate the relay of
the abutting track circuit, even when the abutting track circuit
feed is shunted by the wheels of a rail vehicle.’)
Any joint that abuts either a DC or WR Quick Release track
circuit is excluded from this regime”
Where any parallel bonding forms part of the track circuit
Where isolating transformers are fitted at the relay end of a
single rail 50Hz AC TC.
Where part of the track circuit feed or relay arrangements
includes the use of multi-core cables (replacement with 2
core cable will remove this exclusion)
Maintenance Regime
Generally the service can be conducted at a 6 months and
Annual.
All bonding to be checked to confirm it is effective, correct
and all joints are staggered correctly to bonding plans prior
to implementation.
Prerequisites
Check for all track circuits with relay end or intermediate
bonds with a capacitor greater than 10 μf must follow the
process detailed in NR/SMS/TEST/260
All impedance bonds to be checked to ensure that a hole
has been drilled in the bottom of the termination box to
enable any water to drain freely.
2.11 FS2600 Track Circuits
Maintenance
Specification
NR/ROSE/TC-A2/1
Scope
The regime change applies to standard FS2600 Double Rail
track
circuits
Exclusions
None
Maintenance Regime
Generally the service can be conducted at a 52 week
intervals.
Prerequisites
1) All bonding to be checked to confirm it is effective &
correct.
2) All impedance bonds to be checked to ensure that a
hole has been drilled in the bottom of the termination box to
enable any water to drain freely,
3) Tuner blocks in impedance bonds are either secured
with the terminals as near to the block as possible or are
connected via flying lead to minimise mechanical breakage
by vibration,
4) All internal wiring is secured clear of terminal box casing
(by zip tie if necessary) to prevent damage to outer
insulations.
5) Terminal boxes to be hermetically sealed.
6) Check TX supply voltage is approx 101v and that
tappings are set at 8 for >99v or 9 for <99v.
7) Document on record card
8) Check no unsecured redundant rails are in the 4 foot for
the length of the track circuit
9) Confirm that annual check of FDM carrying cables for
cross talk in locations where FS2600 track circuits are
housed
2.12 Vaughan Harmon Small Train Describer (4M)
Maintenance
Specification
NR/ROSE/TD-A1/1
Scope
The regime change applies to standard Vaughan Harmon
Small Train Describer (4M)
Exclusions
None
Maintenance Regime
Generally the service can be conducted at a 52 week
intervals.
Prerequisites
1) Monitors must be Flat screen type, not CRT
2.13 TRTS, CD & RA Platform Plungers
Maintenance
Specification
Removal of NR/SMS/EL12
Scope
The regime change applies to all CD RA and TRTS
Buttons/Housings
Exclusions
Does not apply to CD RA and TRTS Buttons/Housings with
single cut circuitry
The current regime consists of NR/SMS/EL12B being
scheduled at a frequency of 13-weekly.
Maintenance Regime
The revised regime withdraws maintenance and moves to a
condition led approach.
Condition monitoring of the asset will be via the asset
inspection regime undertaken by the Section Manager
(Signals) and DU Engineer as part their NR/L2/SIG/10028
inspection plans.
Before moving any Platform Plunger to the revised RoSE
regime, it should be checked for the following.
That the unit is not damaged.
That the unit is secure on its mountings and that both the
cable entry gland and any seals are correctly fitted and
effective.
That any doors and locking devices are effective.
Prerequisites
That tail cables and internal wiring are correctly routed,
secure, free from degradation and correctly terminated.
That all internal and external labelling is fitted, clean, and
legible.
That the unit operates correctly.
Test the supply during its operating cycle to confirm it is free
from earths.
Any defects identified must be corrected before moving to a
condition led regime
2.14 Miniature Stop Light (MSL) & Miniature Warning Light (MWL) Level
Crossing with Dorman LED units
Maintenance
Specification
NR/ROSE/LC/A7/1, NR/ROSE/LX74/1
Scope
All Miniature Stop Light (MSL) or Miniature Warning Light
(MWL) level crossings fitted with the Dorman LED type Red
& Green modules
Exclusions
Where audible warning devices are fitted at the crossing
there must be two devices
Maintenance Regime
NR/ROSE/LC/A7/1 – Annually maintenance and
NR/ROSE/LX74/1 Annual Test
Prerequisites
None
End