Technical Maintenance Plans and Coding System - T MU AM 01008 ST - Transport for NSW
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T MU AM 01008 ST Standard Technical Maintenance Plans and Coding System Version 3.0 Issue date: 08 November 2018 © State of NSW through Transport for NSW 2018
T MU AM 01008 ST
Technical Maintenance Plans and Coding System
Version 3.0
Issue date: 08 November 2018
Important message
This document is one of a set of standards developed solely and specifically for use on
Transport Assets (as defined in the Asset Standards Authority Charter). It is not suitable for any
other purpose.
The copyright and any other intellectual property in this document will at all times remain the
property of the State of New South Wales (Transport for NSW).
You must not use or adapt this document or rely upon it in any way unless you are providing
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contract or approval. To be clear, the content of this document is not licensed under any
Creative Commons Licence.
This document may contain third party material. The inclusion of third party material is for
illustrative purposes only and does not represent an endorsement by NSW Government of any
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If you use this document or rely upon it without authorisation under these terms, the State of
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This document may not be current and is uncontrolled when printed or downloaded. Standards
may be accessed from the Transport for NSW website at www.transport.nsw.gov.au
For queries regarding this document, please email the ASA at
standards@transport.nsw.gov.au or visit www.transport.nsw.gov.au
© State of NSW through Transport for NSW 2018T MU AM 01008 ST
Technical Maintenance Plans and Coding System
Version 3.0
Issue date: 08 November 2018
Standard governance
Owner: Manager Asset Information, Asset Standards Authority
Authoriser: Director Network and Asset Strategy, Asset Standards Authority
Approver: Executive Director, Asset Standards Authority on behalf of the ASA Configuration Control
Board
Document history
Version Summary of changes
1.0 First issued 28 May 2015
2.0 Second version issued 9 October 2015.
Changes to previous content – minor formatting change and minor updates to tables
3.0 Third issue
Changes to previous content:
• new document template applied
• incorporated contents of TN 067: 2016
• updated TMC coding framework for Electrical, and Signalling and Control Systems
• new TMC coding framework for Architecture and Services, Track, Property, Civil and
Structures, Technology and Telecommunications and Fleet
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Technical Maintenance Plans and Coding System
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Preface
The Asset Standards Authority (ASA) is a key strategic branch of Transport for NSW (TfNSW).
As the network design and standards authority for NSW Transport Assets, as specified in the
ASA Charter, the ASA identifies, selects, develops, publishes, maintains and controls a suite of
requirements documents on behalf of TfNSW, the asset owner.
The ASA deploys TfNSW requirements for asset and safety assurance by creating and
managing TfNSW's governance models, documents and processes. To achieve this, the ASA
focuses on four primary tasks:
• publishing and managing TfNSW's process and requirements documents including TfNSW
plans, standards, manuals and guides
• deploying TfNSW's Authorised Engineering Organisation (AEO) framework
• continuously improving TfNSW’s Asset Management Framework
• collaborating with the Transport cluster and industry through open engagement
The AEO framework authorises engineering organisations to supply and provide asset related
products and services to TfNSW. It works to assure the safety, quality and fitness for purpose of
those products and services over the asset's whole-of-life. AEOs are expected to demonstrate
how they have applied the requirements of ASA documents, including TfNSW plans, standards
and guides, when delivering assets and related services for TfNSW.
Compliance with ASA requirements by itself is not sufficient to ensure satisfactory outcomes for
NSW Transport Assets. The ASA expects that professional judgement be used by competent
personnel when using ASA requirements to produce those outcomes.
About this document
This standard provides information regarding the requirements for the application of a technical
maintenance code for all assets owned by TfNSW. This standard sets the requirements of a
technical maintenance plan (TMP) and associated framework for technical maintenance codes
for TfNSW owned assets.
This standard is a third issue. This standard is revised to update the TMC coding framework for
Electrical and Signalling and Control Systems and adding new TMC coding framework for the
following:
• Architecture and Services
• Track
• Property
• Civil and Structures
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• Technology and Telecommunications
• Fleet
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Table of contents
1. Introduction .............................................................................................................................................. 7
2. Purpose .................................................................................................................................................... 7
2.1. Scope ..................................................................................................................................................... 7
2.2. Application ............................................................................................................................................. 8
3. Reference documents ............................................................................................................................. 8
4. Terms and definitions ............................................................................................................................. 9
5. Maintenance concept ............................................................................................................................ 10
5.1. Levels of maintenance ......................................................................................................................... 11
6. Technical maintenance plans............................................................................................................... 12
6.1. Candidate assets included in the TMP ................................................................................................ 13
6.2. Application of TMPs ............................................................................................................................. 13
6.3. TMP layout ........................................................................................................................................... 14
6.4. TMP field 1 – TMC ............................................................................................................................... 15
6.5. TMP field 2 – Name ............................................................................................................................. 15
6.6. TMP field 3 – Manufacturer – name and reference ............................................................................. 15
6.7. TMP field 4 – On–system maintenance details ................................................................................... 15
6.8. TMP field 5 – Publication reference ..................................................................................................... 16
7. TMC framework ...................................................................................................................................... 16
7.1. TMC application groups ....................................................................................................................... 17
7.2. Purpose of the TMC ............................................................................................................................. 19
7.3. Requesting a new TMC ....................................................................................................................... 19
8. TMC link with the asset register and asset classification ................................................................. 20
9. Electrical ................................................................................................................................................. 23
9.1. TMCs - Electrical ................................................................................................................................. 23
10. Signalling and control systems ........................................................................................................... 24
10.1. TMCs - Signalling and control systems ........................................................................................... 25
11. Civil and structures ............................................................................................................................... 26
11.1. TMCs – Civil and structures............................................................................................................. 26
12. Track ....................................................................................................................................................... 27
12.1. TMCs - Track ................................................................................................................................... 27
13. Architecture and services ..................................................................................................................... 28
13.1. TMCs - Architecture and services ................................................................................................... 28
14. Property .................................................................................................................................................. 29
14.1. TMCs - Property .............................................................................................................................. 29
15. Technology and telecommunications ................................................................................................. 29
15.1. TMCs - Technology and telecommunications ................................................................................. 30
16. Fleet ........................................................................................................................................................ 31
16.1. TMCs - Fleet .................................................................................................................................... 31
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1. Introduction
The Assets Standard Authority (ASA) is committed to effective and efficient management of
transport assets. The ASA is collaborating with other government and non-government
organisations to continuously improve the capability, performance and condition of the assets
over the full life cycle.
The technical maintenance plan (TMP) specifies the maintenance requirements for TfNSW
owned infrastructure and fleet assets. The TMP provides a comprehensive list of all the
preventive maintenance service schedule requirements specified for a specific asset (asset
specification) defined within the technical maintenance code (TMC) framework and register.
The ASA manages and publishes a register of technical maintenance codes for use by TfNSW,
cluster agencies and service providers.
2. Purpose
The objective of this document is to inform stakeholders of the requirements of a TMP and the
associated framework used to link the TMP with an asset specification identified by its technical
maintenance code for TfNSW owned assets.
This standard specifies the framework for structuring and identifying technical maintenance
codes (TMCs) for assets. The standard also refers to a published register containing the list of
approved TMCs for use when developing or maintaining TMPs or when assigning a TMC code
to every instance of a maintainable asset within an Asset Information System.
These requirements will ensure standardised coding practices are applied across the TfNSW
Transport Network.
2.1. Scope
This standard establishes the requirements of a TMP and associated framework for TMCs for
TfNSW owned assets. This standard defines the framework for TMCs required to be used in the
development and maintenance of maintenance plans assigned to both new and existing asset
types. This standard also defines how:
• to identify the need for a new TMC
• TMCs are structured and grouped within the framework
• to request a new TMC when developing a new or modifying an existing maintenance plan
Developing a new TMP may result from modifying an existing TMP due to service schedule
variations as part of a configuration change
The details of TMCs covering various disciplines are published on T MU AM 01009 TI Technical
Maintenance Coding Register. It is intended that similar information for all engineering
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disciplines and other modes will be published in a future release of this standard. In the interim
contact the relevant discipline lead engineer in the ASA for those discipline specific TMCs that
are not covered in the current release of the register.
Maintenance within the scope of this document refers to both routine maintenance and
renewals maintenance.
2.2. Application
This standard applies to TfNSW, cluster agencies and service providers performing asset
management related services to TfNSW, including their suppliers involved in developing new or
modified TMPs for TfNSW owned new or altered assets or systems. This standard applies to all
phases of the asset life. The standard also applies to the asset register (creation and
management of assets in accordance with the asset classification structure – defined in the
T MU AM 02001 ST Asset Information and Register Requirements) and the associated
planning, scheduling and execution of preventive maintenance service schedules (defined in the
TMP) required to be undertaken by contracted maintenance service providers. Refer to the
T MU AM 02001 ST for further information in relation to the asset register and asset information
system requirements.
This standard should be read in conjunction with the T MU AM 01003 ST Development of
Technical Maintenance Plans and T MU AM 01009 TI Technical Maintenance Coding Register.
3. Reference documents
The following documents are cited in the text. For dated references, only the cited edition
applies. For undated references, the latest edition of the referenced document applies.
Transport for NSW standards
T MU AM 01002 MA Maintenance Requirement Analysis Manual
T MU AM 01003 ST Development of Technical Maintenance Plans
T MU AM 01004 ST Maintenance Service Schedule Classification and Compliance
T MU AM 01009 TI Technical Maintenance Coding Register
T MU AM 02001 ST Asset Information and Register Requirements
International standards
United States Military Standard MIL-STD-2173 (AS) 1986, Reliability-Centered Maintenance
Requirements for Naval Aircraft, Weapons Systems and Support Equipment
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4. Terms and definitions
The following terms and definitions apply in this document:
AEO Authorised Engineering Organisation
ASA Asset Standards Authority
asset an item, thing or entity that has potential or actual value to an organisation. Physical
assets usually refer to equipment, inventory and properties owned by the organisation. Physical
assets are the opposite of intangible assets, which are non-physical assets such as leases,
brands, digital assets, use rights, licences, intellectual property rights, reputation or agreements.
asset life period from asset creation to asset end-of-life (AS/ISO 55000:2014)
asset type grouping of assets having common characteristics that distinguish those assets as a
group or class (AS/ISO 55000:2014)
availability the measure of the percentage of time that an item or system is available to perform
its designated function (AS 4292.4)
conditional (also potential) failure the failure of an item to meet a desired quantifiable
performance criteria which may be either an output or conditional parameter and which
indicated that conditional risk is unacceptable
DMU diesel multiple unit
EMU electric multiple unit
functional failure failure of an item to perform its normal or characteristic actions within
specified limits [MIL-STD-2173 (AS)]
life cycle stages involved in the management of an asset
OSCAR Outer Suburban CAR - NSW TrainLink H set
reliability the probability that an item will perform its intended function for a specified interval
under stated conditions [MIL-STD-2173 (AS)]
renewals maintenance includes the cyclic renewal and upgrading of assets (including
component and asset overhaul) to avoid deterioration in their condition to ensure long term
asset performance and financial sustainability. Renewals maintenance is also referred to as
capital maintenance or major periodic maintenance (MPM).
routine maintenance is a collective of all preventive and repair activities excluding renewals. It
includes planned inspections, preventive maintenance, corrective maintenance and emergency
response to ensure the safety and reliability of assets. Routine maintenance is also referred to
as 'recurrent maintenance'.
rotable a component or inventory item which can be removed from a unit, repaired or improved,
and returned to the unit repeatedly and economically
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TMC technical maintenance code; the TMC is used to identify the variation of unique technical
specifications for an asset type. Assets are assigned a TMC to reflect its configuration based on
the asset type and specification and to define the applicable maintenance plan.
TMP technical maintenance plan; a TMP defines the maintenance plan applicable for an asset
(assets are associated with their required maintenance plan by the TMC). The TMP defines
what maintenance tasks are to be performed (packaged as service schedules), when
(frequency, conditional or statistical trigger) and where the maintenance tasks are to be
performed including required materials, consumables and tools and equipment.
5. Maintenance concept
The maintenance concept covering both recurrent and renewals maintenance shall facilitate the
achievement of the following maintenance objectives over the full asset life in a cost effective
manner:
• assure the continued safety and reliability of the system
• maximise availability
• minimise service disruptions and delays as a result of asset or system defects
The development of the maintenance concept during the planning stage assures that the
functions of design and logistic support are integrated with each other and aimed towards the
same maintenance goals. This prevents individual components of the system reflecting different
design approaches, which can cause incompatibility and increase costs.
Routine maintenance shall be safety and reliability centred due to the immediate impact that
most single point failures could have on the network and the ability to ensure safety to
passengers, personnel or public at large. The maintenance concept should be considered as a
dynamic statement which will progressively change over time to reflect the evolving design
solutions, changes in the maintenance environment, changes in service outcomes and business
objectives. The maintenance concept is related to and driven by the operational concept.
The maintenance concept shall provide the basis for establishing supportability requirements
during the design phase of system configuration changes and the establishment of
requirements for total logistic support, including the determination of the following:
• maintenance tasks
• task frequencies and times
• personnel and skill levels
• test and support equipment
• spare parts
• packaging, handling, storage and transport
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• facilities
• technical data
5.1. Levels of maintenance
The Maintenance Concept Definition shall identify the levels of maintenance in accordance with
T MU AM 06009 ST Maintenance Concept Definition for assets under normal, degraded and
emergency modes of operation. These levels shall typically be managed as on-system and off-
system maintenance.
At both levels, the maintenance is performed on the basis of time, operation, usage driven, on
condition (measured or monitored) and by the correction of conditional or functional failures.
Where renewal or replacement is by a rotable item, the rotable item is generally repaired at
level 2 offsystem.
For each asset type/specification, the criteria for scheduling preventive maintenance shall be
defined in the TMP. The specific tasks to be carried out shall be packaged within the TMP
service schedules. The results of maintenance activities and any corrective actions taken shall
be recorded in the maintenance AEO's asset information system.
5.1.1. Level 1 – On-system operational maintenance
In general, assets are maintained on-system. This maintenance is arranged or carried out by
maintenance AEOs.
Assets shall be accessed for maintenance either by reducing system capabilities or altering
network operation such as re-routing services, speed reductions, using backup/system
redundancy or suspending operations and providing alternate transport for customers. Such
arrangements shall be limited to very short durations outside of peak service times and may
require outages or possessions. On-system maintenance, which is conducted on the
operational system in the field, shall include preventive maintenance, corrective maintenance,
modifications, refurbishments and replacements.
Preventive maintenance consists mainly of inspecting, servicing, cleaning, re-profiling,
calibrating, refurbishing and modifying assets. Corrective maintenance consists of three forms:
• immediate corrective maintenance to repair a defective asset or component (not having an
operational consequence) which is conducted immediately on notification to, or discovery
by maintenance staff – conditional (also potential) failure
• call out corrective maintenance (breakdown maintenance) to repair a failed asset or
component (having an operational consequence), which is attended to by maintenance
staff called out or on standby – functional failure
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• follow-up corrective maintenance which is undertaken to rectify any temporary repairs
previously completed or to undertake corrective maintenance for those conditional (also
potential) failures found during preventive maintenance that did not require immediate
repair
Modification, refurbishments and renewals shall be carried out by either maintenance staff or
construction staff depending on task, access and protection requirements. On-system
operational level restoration of function shall generally be by replacement of assets or
components, or by replacement of consumables, or by the adjustment of out of tolerance
parameters.
5.1.2. Level 2 – Off-system facilities maintenance
Where specialist facilities are required, it is more efficient and cost effective to maintain the
asset off-system. Workshop level maintenance such as a refurbishment or complete renewal
shall normally be conducted off-system on major assets including rotables. Repairs,
refurbishment or renewal shall be completed in accordance with approved specifications and
standards.
6. Technical maintenance plans
Technical maintenance plans (TMPs) are designed to ensure the asset will continue to operate
within design tolerances to meet performance outcomes. The TMP is developed as an output of
the maintenance requirements analysis (MRA). Refer to T MU AM 01002 MA Maintenance
Requirement Analysis Manual for MRA information.
Refer to T MU AM 01003 ST for information regarding TMP content.
The TMP shall include as a minimum the following information:
a. what maintenance is carried out (required tasks and associated maintenance actions
including reference maintenance and operating manuals)
b. when maintenance is carried out (frequency of servicing – time, condition, event, statistic –
defined set of tasks)
c. why maintenance is carried out (reference for traceability to requirement)
d. where maintenance is carried out (maintainable item – make, model, type of equipment) –
this is the link to the asset specification (TMC)
The TMP is only one element of a comprehensive approach to asset management. Asset
management philosophy is based on achieving specified service requirements (such as safety,
reliability and sustainability) associated with an asset at minimum cost of ownership through the
whole asset life.
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6.1. Candidate assets included in the TMP
Any item that contains one or more of the following features shall be allocated a TMC and have
a TMP:
• is repairable
• is used for zonal maintenance (patrols and examinations) covering multiple similar assets
or systems
• has a defined maintenance plan, that is, the item has a scheduled maintenance activity at a
defined interval – based on time, condition, event or statistic trigger
• requires some special maintenance management activity and thus requires certain
information to be recorded
6.2. Application of TMPs
TMPs shall ultimately allow work to be planned and provide the basis of maintenance
scheduling and work order management within an asset information system.
Maintenance is required to be programmed in accordance with the latest update of the TMP and
maintenance tasks are carried out in accordance with the associated service schedules, which
are published for each relevant TMC.
New or modified TMPs once approved in accordance with the requirements of the
T MU AM 01003 ST shall be fully implemented within six months from the date of approval.
The TMP service schedules shall be carried out at periods to ensure assets meet the asset
management objectives and service outcomes.
Service schedules shall contain planning latitude which reflects the allowed variation to
complete schedule tasks around the due date. Planning latitude shall be defined for each TMC
service schedule within the TMP.
Service schedules shall contain a classification to identify it as being safety critical, safety
significant or reliability as per the requirements and criteria defined in T MU AM 01004 ST
Maintenance Service Schedule Classification and Compliance. A classification shall be defined
for each TMC service schedule within the TMP.
The frequency and operational triggers specified in the TMPs are the maximum periods, based
on average usage and intended operating environment. These periods can be tailored to
compensate for local conditions, such as above average usage, difficult maintenance window or
access, and environmentally unfriendly conditions, with the decision to vary from the
recommended period. The rationale for change shall be included in appropriate maintenance
analysis documentation. Any change in the TMP requires approval by the service provider’s
authorising officer.
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Additional maintenance actions and reduced maintenance periods shall be directed by the
maintenance service provider as appropriate to meet as needed local conditions. Local
conditions shall be monitored and documented by maintenance staff and additional
maintenance shall also be directed as required to particular locations at times of vulnerability.
For example, at times of construction or mechanised maintenance activities at a site or at
locations experiencing vandalism or where the operating environment has degraded and is
imposing greater wear or loads on the assets.
Changes to approved existing TMPs such as change of service schedule tasks, frequency and
latitude shall be managed, approved and published in accordance with the requirements
defined in T MU AM 01003 ST. A revision number shall be applied to ensure the correct version
is published as well as to provide a revision history listing the changes applied.
Perceived errors in the content of the TMP shall be made in writing via email to
assetinformation@transport.nsw.gov.au
6.3. TMP layout
The TMP layout identifies the asset (configuration item) and its maintenance plan.
The layout shall contain the following fields:
• TMC – structured code up to six levels (refer to the relevant framework used to create the
concatenated TMC code for each engineering discipline)
• name – applied at each of the TMC levels
• manufacturer – name and reference, applied at the assembly or subassembly – usually at
level 4 or level 5
• on-system maintenance details
• publication reference and notes
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Figure 1 provides an example of a TMP layout:
Figure 1 – Example of a TMP
6.4. TMP field 1 – TMC
The TMC provides a unique code that describes the configuration items within an application,
which satisfies the candidacy criteria in Section 6.1. The detail hierarchical structure is
described in Section 7.
6.5. TMP field 2 – Name
TMP field 2 shall contain the name of asset or configuration item. The name of the configuration
item should be the name used by the manufacturer, wherever possible, as it appears on the
configuration control documents*. Generic names may be used if configuration control
documentation is not available.
* Note: the abbreviation may be used to fit the available space.
6.6. TMP field 3 – Manufacturer – name and reference
TMP field 3 shall contain the prime manufacturer of the item. This shall not be confused with the
supplier.
6.7. TMP field 4 – On–system maintenance details
The first column contains the service schedule identifier. This shall be recorded on the
maintenance work order.
The second column shall contain the periodicity and allowable scheduling latitude of the service
schedule (for example weekly, monthly or yearly).
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The third column shall contain operational and event conditions for the service schedule. For
example:
• performed on condition – replace DCCB arc chute
• performed on event – post feeder trip – sustained fault, post flood, three fault openings
6.8. TMP field 5 – Publication reference
The publication reference refers to the reference number and description of the service
schedule.
7. TMC framework
The TMC is a six levels (maximum) hierarchical structure which provides for a unique
description of configuration items within the application. The levels are described as follows:
• Level 1 Application – Two letter code which describes the application For example, 'SG'
for signalling and control systems.
• Level 2 System – Number which is a two numeric code allowing up to 99 systems to be
identified within an application.
• Level 3 Subsystem – Number which is a two numeric code allowing up to 99 subsystems
to be identified within a system. In some subsystems this level is used to group asset
functions with similar maintenance requirements.
• Level 4 Assembly – Number which is a two numeric code allowing up to 99 major
assemblies to be identified within a subsystem. This level provides information on the
differing technologies and type of asset in the system which provides essentially the same
function. This is the level associated and linked with the asset defined in an asset register
and shall be used to define a specific make, model or type of assembly that fulfils a
function within a subsystem. See Section 8 for details regarding the TMC link with the
asset register and asset classification.
• Level 5 Subassembly or item – Number which is a two numeric code allowing up to
99 items (components) to be identified within a major assembly.
• Level 6 Item – number used where level 5 is used to identify a subassembly. It defines the
item (component) within the subassembly.
The TMC shall typically be a 10 character code (based on the concatenation of level 1 to
level 5) with 12 characters allowed only when level 6 is defined.
The TMC is used to identify the unique technical specification for an asset type within the
framework and to identify and assign the asset type within an application, system, subsystem
and assembly based on its configuration and function.
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The TMC framework caters to group assets of the same asset type to allow for variation in
manufacturers, specifications and components.
The TMC links the technical specification of the asset type with the asset in the asset register as
well as defining a list of general components used to help identify the item or part that is to be
inspected, serviced or repaired on a work order.
The TMC once allocated for use shall not be reused. TMCs shall be reserved for new assets
planned or when modifications are being planned that alters existing asset configurations.
7.1. TMC application groups
TMC level 1 application groups have been defined to cover both network infrastructure and fleet
assets by engineering discipline or by fleet class.
Infrastructure assets shall have a TMC associated with one of the application groups as shown
in Table 1.
Table 1 – TMC application groups for network infrastructure
Level 1 TMC description
EL Electrical - includes substations, distribution, overhead and electrolysis assets
SG Signalling and control systems
CV Civil and structures – includes geotech assets
TR Track - includes special track work, plain line track equipment, track and rail
ancillary equipment
AR Architecture and services – includes buildings, car parks, fixtures, fixed plants,
wayfinding and services assets
TE Technology and telecommunications - includes customer information, security,
warning, revenue and condition monitoring systems assets
PP Property – includes corridors, interchanges, facilities, land, licences and small
heritage objects and minor plant assets
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Fleet assets shall have a TMC associated with one of the application groups as shown in Table
2:
Table 2 – TMC application groups for fleet
Level 1 TMC description
R– For train rolling stock fleet assets (sets, cars, rotable assemblies and
subassemblies) – see the next row for details by train type.
RB B set - Sydney growth train
RC C set – double deck chopper cars
RD D set – new intercity fleet
RE N set – single deck Endeavour and P Set – single deck Xplorer cars (diesel)
RH J set – single deck Hunter cars (diesel)
RI V set – double deck intercity cars
RK K set – double deck camshaft (air conditioned) cars
RM M set – double deck millennium cars
RO H set – double deck Oscar cars
RR L,R and S sets – double deck camshaft cars
RT T set – double deck Tangara cars
RW A set – double deck Waratah cars
RX X set – single deck XPT cars (diesel)
RP heavy plant rolling stock, track machines, locomotives, wagons, rail cars and
vans
L– For light rail fleet assets (sets, cars, rotable assemblies and subassemblies) –
see the next row for details by tram type.
LU U set – single deck Urbos cars
LC C set – single deck Citadis cars
F– For ferry fleet assets (vessels, rotable assemblies and subassemblies) – see the
next row for details by ferry class.
FE Emerald class
FW Freshwater class
FF First fleet class
FL Lady class
FR RiverCat class
FH Harbour class
FS SuperCat class
FP Vehicular ferries
FV For maritime vessels (excluding ferries)
B– For bus fleet assets (buses, rotable assemblies and subassemblies).
RV For road vehicle fleet assets including trailers (excluding buses).
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7.2. Purpose of the TMC
Asset identification and coding is generally established during the acquire stage of the life cycle
and will continue to be applied throughout the operate and maintain stage. Coding is required to
uniquely identify the assets for a range of purposes.
The TMC forms the basis of the numbering system used for the following purposes:
• group, categorise and define maintenance plans (preventive maintenance service
schedules) by asset type based on an reliability centred maintenance (RCM) analysis
(different asset types within the same function may adopt the same TMP)
• group and categorise asset types (configuration items) within an asset register
• ensure the application of maintenance plans and reporting of maintenance compliance for
all assets are contained with the asset register
• as a primary reference for configuration documents such as drawings, specifications as
well as derived documents such as TMPs, maintenance analysis documentation, failure
and defect coding
The TMC also shall define the following:
• component and sub-component parts required to support failure and defect identification
and management (component and sub-components are not directly associated to each
asset but are linked via the asset type that defines a common parts list for all assets of that
type)
• warranty to be applied
• materials list (inventory) required for servicing, maintenance and repairs
The TMC defines the system down to six levels which includes systems, subsystems,
assemblies and items that make up the complete system. This specification provides a
description of asset types (configuration items) from the 4th level to the 6th level of the TMP.
The 4th level to 6th level breaks down the asset to manufacturer and component levels.
7.3. Requesting a new TMC
TfNSW are the owners of the TMPs and associated TMCs. ASA is the custodian on behalf of
TfNSW and as a result controls and manages the published register of approved TMCs for use
across the Transport Network.
A service provider shall request a TMC (level 1 to level 4) when either of the following occurs:
• developing a new TMP for a new asset
• updating an existing TMP for an existing asset as a result of service schedule variations
associated with configuration change
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The request shall include the proposed TMC (level 1 to level 4) that aligns with the TMC
framework in accordance with this standard and T MU AM 01009 TI.
Once approved for use, TMCs shall be published in T MU AM 01009 TI.
Requests for a new TMC shall be made to assetinformation@transport.nsw.gov.au
8. TMC link with the asset register and asset
classification
All assets shall be classified by class, function and type as defined in T MU AM 02001 ST. The
asset function shall be used to group one or more asset types that perform the same function.
The TMC shall be used to define the unique make, model or build (asset specification) that is
linked to an asset performing a designated function. One or many TMCs can exist for asset
functions that are approved for use on the Transport Network.
The concatenated asset classification (known as the technical object code) shall be a separate
identifier recorded against the asset in the asset register. These technical objects have different
characteristics which distinguish them and thus shall be separately identified and managed.
The TMC shall be a separate identifier recorded against the asset in the asset register. Only
one TMC shall be recorded against the asset in the asset register. The TMC shall remain
recorded against the asset in the asset register for historical purposes even after all assets of
that type have been disposed and no longer exist on the Transport Network.
The TMC framework caters to group assets (typically at L4 assembly) with the asset function to
allow for variation in manufacturers, specifications and components. Figure 2 shows the asset
register linked to the TMC and Table 3 provides details and examples of the TMC association
with an asset function.
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Asset Register
Asset
§ Inherits the attribute Asset(s)
requirements from the assigned
Asset Function & Type
§ Inherits the technical TMC = Make, Model of the
specification requirements from Assembly/Sub-Assembly
the assigned TMC
Asset Specification
(TMC)
L1 - Application
Asset Classification
(Technical Object)
Technical Object TMC
§ The technical Class L2 - System § The TMC code is
object code is the the concatenation
concatenation of of the TMC levels
the asset L1-L5
classification § L5 shall be 00 if
(Class-Function- no Sub-Assembly
Type) Function L3 – Sub-System is defined
§ L6 does not form
part of the code
assigned to the
Asset. Only used
for defining
Type L4 - Assembly component builds
Asset Class
§ Grouping of related Asset Functions
covering both Infrastructure and
Fleet assets L5 – Sub-Assembly
Asset Function or Item
§ Grouping of related Asset Types
§ Defines the data attributes to be captured
§ Defines the attribute specification (name,
type, format, unit of measure, min/max),
common to an asset function, group of asset L6 – Item (if
types or individual asset type applicable)
Asset Type
§ Defines the variation in purpose or Application
configuration of assets performing the § Engineering Asset Discipline or Fleet Class for grouping related
same function Systems and Sub-Systems
§ Together with the Asset Function defines Sub-System
the Financial Capitalisation mapping § Grouped set of Assemblies performing the same function within a
System
§ Aligned to the Asset Function
Assembly or Sub-Assembly
§ Lowest maintainable Asset defined in an Asset Register. It may be
an Assembly or Sub-Assembly that is managed as a rotable Asset
§ Links to the Asset Register to define the technical specification of
the Asset associated with an Asset Function by the TMC
framework via concatenation of the TMC levels L1-L5
§ Technical specification defines the:
§material part list (spares)
§manufacturers warranty
§build (components)
§maintenance plan (tasks, resources, tools, materials and
access)
§failure modes, causes, effects and criticality (based on
FMECA) relative to the failure of components of the Assembly
or Sub-Assembly
Figure 2 – Asset register and link with TMC (asset specification)
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Table 3 – Example of TMC application and link to the asset function
Level 1 Level 2 Level 3 Level 4 TMC description Maintainable TMC Asset
asset level function
EL N/A N/A N/A ELECTRICAL No N/A N/A
EL 01 N/A N/A AC HV Switchgear No N/A N/A
EL 01 11 N/A HV ACCB – Bulk Oil No N/A N/A
Interrupted, Outdoor
EL 01 11 01 ACCB AEI 33KV Yes EL01110100 ACCB
LGIC/44 Bulk Oil,
Outdoor
EL 01 11 02 ACCB BTH 66KV JB429 Yes EL01010200 ACCB
400AMP Bulk Oil,
Outdoor
EL 01 11 03 ACCB BTH 33KV JB427 Yes EL01010300 ACCB
Bulk Oil, Outdoor
EL 01 11 04 ACCB W'HOUSE 33KV Yes EL01010400 ACCB
1200A 345GCN Bulk
Oil, Outdoor
EL 01 11 05 ACCB ENGLISH ELEC Yes EL01110500 ACCB
66KV OKD-2 Bulk Oil,
Outdoor
EL 01 11 06 ACCB ENGLISH ELEC Yes EL01110600 ACCB
33KV OKH4D+OKH4E
B/OIL
EL 01 11 07 ACCB INOUE 30 TEO- Yes EL01110700 ACCB
150-S 33KV Bulk Oil,
Outdoor
EL 01 11 08 ACCB ENGLISH ELEC Yes EL01110800 ACCB
66KV OKM6 Bulk Oil,
Outdoor
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Level 1 Level 2 Level 3 Level 4 TMC description Maintainable TMC Asset
asset level function
EL 01 12 N/A HV ACCB – Bulk Oil No N/A N/A
Interrupted, Indoor
EL 01 13 N/A HV ACCB, Minimum Oil No N/A N/A
Interrupted, Outdoor
EL 01 14 N/A HV ACCB, Minimum Oil No N/A N/A
Interrupted, Indoor
Note: N/A means not applicable
The list of TMCs is defined and published in T MU AM 01009 TI.
9. Electrical
The TfNSW electric power system assets comprise but not limited to the following:
• high voltage (HV) transmission, distribution, rectification and control of electric power for
purposes of supplying electric trains and trams
• electrical supply to the railway signalling system
• electrical supply to commercial and industrial buildings and other applications including
workshops, railway stations, offices, lifts and escalators, trackside infrastructure buildings,
and tunnels
9.1. TMCs - Electrical
Table 4 explains the TMC groupings to level 2. The individual list of TMCs within each group to
level 4 is contained within T MU AM 01009 TI. TMC level 2 code groups for EL (Electrical) are
included in Table 4.
Table 4 – TMC framework to level 2 for electrical
Level 1: Level 1: Description Level 2: Level 2: Description
Code Code
EL Electrical 01 AC High Voltage Switchgear
EL Electrical 02 Power Transformers and Regulators
EL Electrical 03 Rectification
EL Electrical 04 DC Switchgear
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Level 1: Level 1: Description Level 2: Level 2: Description
Code Code
EL Electrical 05 AC Auxiliary Power Supplies
EL Electrical 06 Auxiliary Services
EL Electrical 07 Electric Braking
EL Electrical 08 DC Overhead Wiring
EL Electrical 09 Traction Return
EL Electrical 10 HV/LV Aerial Lines
EL Electrical 11 SCADA
EL Electrical 12 Protective Earthing, Bonding and Electrolysis
Mitigation
EL Electrical 13 Enclosures
EL Electrical 14 Distribution Transformers
EL Electrical 15 Electrical LV Distribution
EL Electrical 16 Fault Protection
EL Electrical 17 HV/LV cables and DC Traction Cables
EL Electrical 18 Voltage Transformers and Current Transformers
EL Electrical 19 AC High Voltage Harmonic Filters
EL Electrical 20 Fault Current Limiters
10. Signalling and control systems
The TfNSW signalling and control system assets comprise but not limited to the following vital
and non-vital system assets:
Vital systems
The vital elements of the signalling system include the following:
• signals
• trainstops
• track circuit train detection systems
• point operation and detection systems
• traction (electrical current) return arrangements
• vital interlocking systems and protected level crossing systems
• automatic train protection (field equipment)
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Non-vital systems
The non-vital elements of the signalling system that support and interface to the vital system,
includes the following:
• control systems, such as the advanced train running information control system (ATRICS),
which are part of a consolidated train control centre
• control and indication panels for signallers
• the track side components that provide information to remote indication systems used for
management and train control purposes
• control systems that are part of a consolidated train control centre inclusive of SigView, the
Wollongong train describer (WTD), train location systems (TLS) and all forms of ATRICS
• high voltage transmission, distribution, rectification and control of electric power for
purposes of supplying electric trains, electrical supply to the railway signalling system,
electrical supply to commercial and industrial buildings and other applications (includes
workshops, railway stations, offices, lifts and escalators, trackside infrastructure buildings
and tunnel pumps)
10.1. TMCs - Signalling and control systems
Table 5 explains the TMC groupings to level 2 (system). The individual list of TMCs within each
group to level 4 is contained within T MU AM 01009 TI. TMC level 2 code groups for SG
(signalling and control systems) are included in Table 5.
Table 5 –TMC framework to level 2 for signalling and control systems
Level 1: Level 1: Level 2: Level 2:
Code Description Code Description
SG Signalling and 01 Train management systems
control systems
SG Signalling and 02 Interface systems
control systems
SG Signalling and 03 Telemetry systems
control systems
SG Signalling and 04 Connectivity for signalling and control systems
control systems
SG Signalling and 05 Interlocking
control systems
SG Signalling and 06 Automatic train protection
control systems
SG Signalling and 07 Automatic train operation
control systems
SG Signalling and 08 Signals
control systems
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Level 1: Level 1: Level 2: Level 2:
Code Description Code Description
SG Signalling and 09 Trainstop
control systems
SG Signalling and 10 Points
control systems
SG Signalling and 11 Rail vehicle detection
control systems
SG Signalling and 12 Level crossing protection
control systems
SG Signalling and 13 Releasing devices
control systems
SG Signalling and 14 Miscellaneous trackside equipment
control systems
SG Signalling and 15 Power supply
control systems
SG Signalling and 16 Pneumatic supply
control systems
SG Signalling and 17 Signalling enclosure
control systems
11. Civil and structures
The TfNSW civil and structures assets comprise but not limited to the following:
• structures
• drainages
• earthworks
• level crossings
11.1. TMCs – Civil and structures
Table 6 explains the TMC groupings to level 2 (system). The individual list of TMCs within each
group to level 4 is contained within T MU AM 01009 TI. TMC level 2 code groups for CV (civil
and structures) are included in Table 6.
Table 6 –TMC framework to level 2 for civil and structures
Level 1: Level 1: Level 2: Level 2:
Code Description Code Description
CV Civil and structures 01 Bridges
CV Civil and structures 02 Drainage and culverts
CV Civil and structures 03 Earth works
CV Civil and structures 04 Fencing and barriers
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Level 1: Level 1: Level 2: Level 2:
Code Description Code Description
CV Civil and structures 05 Level crossings
CV Civil and structures 06 Overhead wiring and gantry structures
CV Civil and structures 07 Tunnels
CV Civil and structures 08 Retaining structures
CV Civil and structures 09 Roads
CV Civil and structures 10 Towers
CV Civil and structures 11 Track slabs
CV Civil and structures 12 Service route
CV Civil and structures 13 Miscellaneous structures
CV Civil and structures 14 Geotechnical equipment
12. Track
The TfNSW track assets comprise but not limited to the following:
• track system
• rail system
• turnouts
• train monitoring equipment
• track ancillary equipment
12.1. TMCs - Track
Table 7 explains the TMC groupings to level 2 (system). The individual list of TMCs within each
group to level 4 is contained within T MU AM 01009 TI. TMC level 2 code groups for TR (track)
are included in Table 7.
Table 7 –TMC framework to level 2 for track
Level 1: Level 1: Level 2: Code Level 2:
Code Description Description
TR Track 01 Plain line system
TR Track 02 Special track work
TR Track 03 Plain line track equipment
TR Track 04 Track and rail ancillary equipment
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13. Architecture and services
The TfNSW architecture and services assets comprise but not limited to the following:
• buildings and access
• car parks
• services
• landscaping
• signage
• fixed and minor plant
13.1. TMCs - Architecture and services
Table 8 explains the TMC groupings to level 2 (system). The individual list of TMCs within each
group to level 4 is contained within T MU AM 01009 TI. TMC level 2 code groups for AR
(architecture and services) are included in Table 8.
Table 8 –TMC framework to Level 2 for Architecture and Services
Level 1: Level 1: Description Level 2: Level 2:
Code Code Description
AR Architecture and services 01 Vertical transportation
AR Architecture and services 02 Mechanical systems (HVAC) (heating ventilation air
conditioning)
AR Architecture and services 03 Pneumatic supply
AR Architecture and services 04 Fire and life safety systems
AR Architecture and services 05 Hydraulic systems (water, sewer, drainage)
AR Architecture and services 06 Gas systems
AR Architecture and services 07 Electrical LV installation and lighting systems
AR Architecture and services 08 *spare*
AR Architecture and services 09 Buildings and access
AR Architecture and services 10 Car parks
AR Architecture and services 11 Fixtures and fixed plant
AR Architecture and services 12 Minor plant and equipment
AR Architecture and services 13 Fuel systems
AR Architecture and services 14 Signage
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14. Property
The TfNSW property assets comprise but not limited to the following:
• corridors including right of way, rail yards, roads and waterways
• interchanges including train stations, ferry wharves, bus stops and light rail stops
• maintenance, operation and logistic facilities
• facilities for all disciplines specific
14.1. TMCs - Property
Table 9 explains the TMC groupings to level 2 (system) for property asset. The individual list of
TMCs within each group to level 4 is contained within T MU AM 01009 TI. TMC level 2 code
groups for PP (Property) are included in Table 9.
Table 9 –TMC framework to level 2 for property
Level 1: Level 1: Level 2: Level 2:
Code Description Code Description
PP Property 01 Corridors
PP Property 02 Interchanges
PP Property 03 Maintenance facilities
PP Property 04 Operations facilities
PP Property 05 Logistics facilities
PP Property 06 Electrical facilities
PP Property 07 Signalling and control facilities
PP Property 08 Telecommunications facilities
PP Property 09 Service and plant facilities
PP Property 10 Road traffic facilities
PP Property 11 Miscellaneous facilities
PP Property 12 Rest areas
PP Property 13 Feeder easements
PP Property 14 Land
15. Technology and telecommunications
The TfNSW technology and telecommunication systems assets comprise but not limited to the
following:
• wireless systems
• condition monitoring systems
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