T MU MD 21001 ST Equipment Rooms and Cubicles …T MU MD 21001 ST Equipment Rooms and Cubicles for Programmable Electronic Systems Version 1.0 Issue date: 19 July 2019 Preface The

Equipment Rooms and Cubicles for Programmable Electronic Systems

T MU MD 21001 ST

Standard

Version 1.0

Issue date: 19 July 2019

© State of NSW through Transport for NSW 2019

T MU MD 21001 ST Equipment Rooms and Cubicles for Programmable Electronic Systems

Version 1.0 Issue date: 19 July 2019

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

products or services to a NSW Government agency and that agency has expressly authorised

you in writing to do so. If this document forms part of a contract with, or is a condition of

approval by a NSW Government agency, use of the document is subject to the terms of the

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

third party product or service.

If you use this document or rely upon it without authorisation under these terms, the State of

New South Wales (including Transport for NSW) and its personnel does not accept any liability

to you or any other person for any loss, damage, costs and expenses that you or anyone else

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should exercise their own skill and care in the use of the document.

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 [email protected] or visit www.transport.nsw.gov.au © State of NSW through Transport for NSW 2019



Standard governance

Owner: Lead Telecommunications Engineer, Asset Standards Authority

Authoriser: Chief Engineer, 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 issue.

© State of NSW through Transport for NSW 2019 Page 3 of 35



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 specifies the design and construction requirements of equipment rooms and

cubicles and associated pathways (cable routes) that accommodate equipment and cabling

infrastructure for programmable electronic systems.

This standard covers the requirements for location, size and provisioning for equipment rooms,

cubicles, and associated pathways.

This standard describes the tailored conformance to AS/NZS 3084:2017 and

AS/NZS ISO/IEC 14763.2:2014.

This standard was previously issued as T MU TE 21001 ST Equipment Rooms and Cubicles,

v1.0 in September 2015.

This standard supersedes T MU TE 21001 ST, v1.0 and is now issued as T MU MD 21001 ST

Equipment Rooms and Cubicles for Programmable Electronic Systems, version 1.0.




The changes from the previous issue include the following:

• incorporation of TN 019: 2018 Clarification to T MU TE 21001 ST Equipment Rooms and

Cubicles, v1.0

• adoption of AS/NZS 3084:2017 and AS/NZS ISO/IEC 14763.2:2014




Table of contents 1. Introduction .............................................................................................................................................. 7

2. Purpose .................................................................................................................................................... 7 2.1. Scope ..................................................................................................................................................... 7 2.2. Application ............................................................................................................................................. 7

3. Reference documents ............................................................................................................................. 9

4. Terms and definitions ........................................................................................................................... 11

5. Criticality assessment of equipment rooms and cubicles ................................................................ 12

6. Compliance with legislation and standards ....................................................................................... 13 6.1. Legislation ............................................................................................................................................ 13 6.2. TfNSW standards ................................................................................................................................ 14 6.3. Australian standards ............................................................................................................................ 16

7. Location .................................................................................................................................................. 16 7.1. Earth potential rise zone ...................................................................................................................... 16 7.2. Catch points ......................................................................................................................................... 17 7.3. Water infiltration ................................................................................................................................... 17 7.4. Access ................................................................................................................................................. 17 7.5. Geographical diversity ......................................................................................................................... 17

8. Size .......................................................................................................................................................... 17 8.1. Network access ................................................................................................................................... 18 8.2. Network distribution ............................................................................................................................. 18 8.3. Network core ........................................................................................................................................ 19

9. Provisioning ........................................................................................................................................... 19 9.1. Layout .................................................................................................................................................. 19 9.2. Doors ................................................................................................................................................... 22 9.3. Heating ventilation and air-conditioning ............................................................................................... 22 9.4. Lighting ................................................................................................................................................ 24 9.5. Power ................................................................................................................................................... 24 9.6. Equipment earthing .............................................................................................................................. 26 9.7. Electrostatic discharge protected area ................................................................................................ 26 9.8. Occupational noise management ........................................................................................................ 26 9.9. Physical security .................................................................................................................................. 26

10. Horizontal pathways .............................................................................................................................. 29

11. Building backbone pathways ............................................................................................................... 29

12. Campus backbone pathways and related spaces.............................................................................. 29 12.1. Trenches .......................................................................................................................................... 31 12.2. Conduit layout design ...................................................................................................................... 31 12.3. Pit design ......................................................................................................................................... 31 12.4. Cabling ............................................................................................................................................. 31

Appendix A Informative examples of equipment room layouts......................................................... 32 © State of NSW through Transport for NSW 2019 Page 6 of 35



1. Introduction Equipment rooms and cubicles are required to accommodate equipment and cabling

infrastructure for programmable electronic systems that performs functions necessary or

desirable for the workings of transport services within the Transport Network. These systems

include ticketing, customer information, security and operational communications.

This standard is intended to be read in conjunction with the following standards:

• AS/NZS 3084:2017 Telecommunications installations – Telecommunications pathways and

spaces for commercial buildings

• AS/NZS ISO/IEC 14763.2:2014 Information technology – Implementation and operation of

customer premises cabling – Part 2: Planning and installation

2. Purpose This standard specifies the design and construction requirements of equipment rooms, cubicles,

and associated pathways (cable routes) that accommodate equipment and cabling

infrastructure for programmable electronic systems.

2.1. Scope This standard covers the requirements for location, size and provisioning for equipment rooms,

cubicles, and associated pathways.

This standard describes the tailored conformance to AS/NZS 3084:2017 and

AS/NZS ISO/IEC 14763.2:2014.

T HR TE 21003 ST Telecommunications for Traction Substations and Section Huts contains

additional requirements for telecommunication facilities within high voltage locations.

This standard does not cover the requirements for fire safety.

2.2. Application This standard applies to heavy rail; however it can apply to other modes of transport.

This standard does not apply to rolling stock and heavy rail signalling equipment rooms and

cubicles.

This standard applies to spaces and pathways that contain, or are intended to contain

equipment and cabling infrastructure for programmable electronic systems.

This standard applies to the ‘telecommunications network’, ‘customer access equipment’ and

‘customer cabling’; however does not apply to ‘terminal equipment’.




This standard applies to production and non-production environments, including test and model

environments.

This standard applies in full to new or substantially altered equipment rooms, cubicles, and

associated pathways.

For example, a booking office accommodates station services in a rack. A project

intends to relocate this equipment into a refurbished room. This standard applies in

full.

This standard partially applies to altered equipment rooms, cubicles, and associated pathways.

Where altered, the relevant requirements of this standard apply to the altered assets, in addition

to Section 5 and Section 6.

For example, an existing equipment room accommodates station services. A project

intends to install new equipment as part of an upgrade to the customer information

system. The room layout needs to be redesigned to accommodate a new rack and the

power system expanded. The general requirements, layout, and power requirements

from Section 6, Section 9.1 and Section 9.6 of this standard apply.

This standard partially applies to the installation of new equipment or cabling infrastructure

within existing unaltered equipment rooms, cubicles, and associated pathways, provided the

change would not increase the assessed criticality. The process for assessing criticality is

defined in Section 5.


intends to install new equipment as part of an upgrade to an information technology

system. The criticality of the equipment room is reassessed with the proposed

equipment and the criticality will not change. In this case, the standard does not apply.


intends to install new equipment as part of an industrial automation and control

system. The criticality of the equipment room is reassessed with the proposed

equipment and the criticality will increase. In this case, the standard applies in full.

Where a change increases the assessed criticality, this standard applies in full.

This standard applies to information technology equipment and cabling infrastructure located in

stations, stops and depots.

This standard does not apply to recurrent maintenance of equipment rooms, cubicles, and

associated pathways.




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.

International standards

IEC 61340-5-1 Electrostatics – Part 5-1: Protection of electronic devices from electrostatic

phenomena – General requirements

IEC 62498-3 Railway applications – Environmental conditions for equipment – Part 3:

Equipment for signalling and telecommunications

IEEE 485 Recommended Practice for Sizing Lead-Acid Batteries for Stationary Applications

Australian standards

AS 3011 Electrical installations - Secondary batteries installed in buildings (all parts)

AS/CA S009 Installation requirements for customer cabling (Wiring Rules)

AS/NZS 1269.2 Occupational noise management - Noise control management

AS/NZS 3000 Electrical installations (known as the Australian/New Zealand Wiring Rules)

AS/NZS 3010 Electrical installations – Generating sets

AS/NZS 3084:2017 Telecommunications installations – Telecommunications pathways and

spaces for commercial buildings

AS/NZS 3112 Approval and test specification - Plugs and socket-outlets

AS/NZS ISO/IEC 14763.2:2014 Information technology - Implementation and operation of

customer premises cabling - Planning and installation

Transport for NSW standards

ESB 003 Station Functional Spaces

ESB 004 Station Services and Systems

ESC 250 Turnouts and Special Trackwork

SPM 0123 Reinforced Pre-Cast Concrete Cable Pits

T MU AM 01001 ST Life Cycle Costing

T MU AM 02002 TI Asset Classification System

T MU AM 04001 PL TfNSW Configuration Management Plan

T MU EN 00005 ST Ambient Environmental Conditions

T MU HF 00001 ST Human Factors Integration – General Requirements

T MU MD 00006 ST Engineering Drawings and CAD Requirements © State of NSW through Transport for NSW 2019 Page 9 of 35



T MU MD 20002 ST Risk Criteria for Use by Organisations Providing Engineering Services

T HR SS 80002 ST Low Voltage Electrical Installations

T HR TE 01001 ST Communication Outdoor Cabling

T HR TE 21002 ST Communications Earthing and Surge Suppression

T HR TE 21003 ST Telecommunications for Traction Substations and Section Huts

T MU TE 81001 ST Telecommunication Equipment – Physical Interfaces and Environmental

Conditions

Legislation

Environmental Planning and Assessment Act 1979

Heritage Act 1977

Radiocommunications Act 1992

Radiocommunications (Compliance Labelling – Devices) Notice 2014

Radiocommunications (Compliance Labelling - Electromagnetic Radiation) Notice 2014

Radiocommunications Labelling (Electromagnetic Compatibility) Notice 2017

Rail Safety National Law (NSW), 2012

Telecommunications Act 1997

Telecommunications (Labelling Notice for Customer Equipment and Customer Cabling)

Instrument 2015

Telecommunications Technical Standard (Requirements for customer cabling products -

AS/CA S008) 2015

Work Health and Safety Act 2011

Other reference documents

Australian Government Attorney-General's Department, Protective Security Policy Framework -

15 Physical security for entity resources

Australian Government Attorney-General's Department, Protective Security Policy Framework -

16 Entity facilities

The Australian Building Codes Board, National Construction Code, Volume one

NSW Government Resource Efficiency Policy, For a resource productive public sector with less

impact on the environment

SafeWork NSW, Code of Practice – Hazardous Manual Tasks

SafeWork NSW, Managing the Work Environment and Facilities Code of Practice




SafeWork NSW, Managing Noise and Preventing Hearing Loss at Work code of practice

SafeWork NSW, Safe design of structures code of practice

SafeWork NSW, Code of Practice – Managing the Risk of Falls at Workplaces

Transport for NSW, Future Transport Technology, Roadmap 2016

4. Terms and definitions The following terms and definitions apply in this document:

building backbone cable fixed cable connecting distributors within the building backbone

cabling subsystem (AS/NZS 11801.1)

cable management system system used for the support and/or containment, retention,

protection of all types of cables, information and communication lines, electrical power

distribution conductors and their associated accessories (AS/NZS ISO/IEC 14763.2:2014)

campus backbone cable fixed cable connecting distributors within the campus backbone cabling

subsystem (AS/NZS 11801.1)

customer access equipment customer equipment with multiple ports (local or network) that

provides access (gateway functions) to a telecommunications network and is capable of

switching, storage, processing, conversion, integration, line isolation/coupling or multiplexing of

analogue or digital voice or voice equivalent communication (AS/CA S003). (AS/CA S009)

customer cabling a line that is used, installed ready for use or intended for use on the customer

side of the boundary of a telecommunications network (Telecommunications Act 1997)

EPR earth potential rise

EPR hazard zone the area around an earthing system bounded by a contour joining all points

of EPR equal to the maximum acceptable voltage below which no special precautions need to

be taken to protect telecommunication services, cabling providers and end-users (AS/CA S009)

floor cable cable connecting the floor distributor to the intermediate distributor (AS 11801.3)

HVAC heating, ventilation and air conditioning

IP code coding system to indicate the degrees of protection provided by an enclosure against

access to hazardous parts, ingress of solid foreign objects, ingress of water and to give

additional information in connection with such protection (AS 60529)

IK code coding system to indicate the degree of protection provided by an enclosure against

harmful external mechanical impacts (IEC 62262)

IMSB installation main switchboard

LCC life cycle cost

LV low voltage © State of NSW through Transport for NSW 2019 Page 11 of 35



NABERS national Australian built environment rating system

NCC national construction code

network termination device a device meeting the carrier’s requirements that is provided by the

carrier to establish a demarcation point between the carrier’s telecommunications network and

customer cabling or customer equipment (AS/CA S009)

pathway (cable route, cable way) defined route for cables between termination points

(AS/NZS ISO/IEC 14763.2:2014)

rail corridor the land on which a railway is built; comprising all property between property

fences, or from the nearest rail in each direction for the distance specified by the Rail

Infrastructure Manager. (Rail Industry Safety and Standards Board website glossary)

rack unit (RU) 44.45 mm (1.75 inches) of vertical mounting space in an IEC 60297 series

standard cabinet or rack (AS/NZS ISO/IEC 14763.2:2014)

space (telecommunications) specified volume (e.g. room, maintenance hole or part thereof)

housing closures and/or other information technology equipment (AS/NZS ISO/IEC

14763.2:2014)

telecommunications network a system, or series of systems that is operated by a carrier or

carriage service provider and which carries, or is capable of carrying, communications by

means of guided and/or unguided electromagnetic energy (AS/CA S009)

terminal equipment peripheral equipment operated by the end-user to access a

telecommunications service (AS/CA S009)

Transport Network the transport system (transport services and transport infrastructure)

owned and operated by TfNSW, its operating agencies or private entities upon which TfNSW

has power to exercise its functions as conferred by the Transport Administration Act or any

other Act.

5. Criticality assessment of equipment rooms and cubicles The requirements for criticality assessment are provided in Section 5.

All equipment rooms and cubicles shall be assessed for criticality based on the risk assessment

consequence criteria listed in T MU MD 20002 ST Risk Criteria for Use by Organisations

Providing Engineering Services.

The risk assessment shall include the present, proposed and projected equipment and cabling

infrastructure within the equipment room or cubicle for at least 10 years.

TfNSW shall determine the consequence rating in consultation with the operator and

maintainer.




6. Compliance with legislation and standards Equipment rooms and cubicles shall comply with all relevant legislation, Australian standards

and TfNSW standards and these requirements are provided in Section 6.1 to Section 6.3.

The design and construction of equipment rooms and cubicles shall comply with the National

Construction Code (NCC), volume 1.

Note: The NCC, volume 1 does not manage risks to rail safety. The Rail Safety

National Law (NSW), 2012 requires that risks associated with rail infrastructure

operations and rolling stock operations are managed.

Note: Statutory instruments, such as the NCC, volume 1, AS/NZS 3000 Electrical

installations (known as the Australian/New Zealand Wiring Rules) and AS/CA S009

Installation requirements for customer cabling (Wiring Rules), contain requirements

and recommendations that influence the layout of equipment rooms. The ASA is

legally unable to grant concessions to statutory requirements.

6.1. Legislation Equipment rooms and cubicles shall comply with all relevant legislation and technical standards

given effect by legislation. At the time of publication this includes the following:

• development

o Environmental Planning and Assessment Act 1979

• health and safety

o Rail Safety National Law (NSW) 2012, if applicable

o Work Health and Safety Act 2011

o SafeWork NSW, Safe design of structures code of practice

o SafeWork NSW, Code of Practice – Hazardous Manual Tasks

o SafeWork NSW, Managing the Work Environment and Facilities Code of Practice

o SafeWork NSW, Code of Practice – Managing the Risk of Falls at Workplaces

• heritage

o Heritage Act 1977

• radiocommunications and telecommunications

o Radiocommunications Act 1992

o Radiocommunications (Compliance Labelling – Devices) Notice 2014




o Radiocommunications (Compliance Labelling - Electromagnetic Radiation) Notice

2014

o Radiocommunications Labelling (Electromagnetic Compatibility) Notice 2017

o Telecommunications Act 1997

o Telecommunications (Labelling Notice for Customer Equipment and Customer

Cabling) Instrument 2015

o Telecommunications Technical Standard (Requirements for customer cabling

products - AS/CA S008) 2015

6.2. TfNSW standards Equipment rooms and cubicles shall comply with relevant TfNSW standards.

6.2.1. Stations and buildings Equipment rooms and cubicles shall comply with the relevant TfNSW standards pertaining to

building services, electrical, heritage and station design.

The requirements for ‘communication room’ contained within ESB 003 Station Functional

Spaces and ESB 004 Station Services and Systems are replaced with the requirements of this

standard.

6.2.2. Life cycle costing The development of design options shall have an associated life cycle cost (LCC) for each

option in accordance with T MU AM 01001 ST Life Cycle Costing. The design options

developed shall satisfy the requirements of this standard irrespective of the LCC.

6.2.3. Configuration management All configuration items shall be labelled with their assigned unique code as described in

T MU AM 04001 PL TfNSW Configuration Management Plan.

The final design shall include the following:

• a complete set of engineering drawings and associated design documentation produced in

accordance with T MU MD 00006 ST Engineering Drawings and CAD Requirements,

including the following:

o site plan, inclusion of demolition

o photos showing the present and as-built equipment and cabling infrastructure

o layout drawings, inclusive of floor and wall space reservations for rack cabinets and

enclosures in plan and section views




o heating, ventilation, and air conditioning drawings

o power drawings, inclusive of distribution and backup power supplies, circuits and

socket-outlets, in plan, section and elevation views

o earthing and surge suppression drawing in plan view

o electrostatic discharge protected area drawing

o operational noise control techniques drawing

o physical security drawing

o building backbone pathways drawings, inclusive of cable trays and trunking in plan

and section views

o campus backbone pathways drawings, inclusive of trenches and conduits, pits and

cables in plan view

• specific design calculations, estimations, predictions, modelling and the like, and

supporting files including modelling data and associated files, including the following:

o site sizing predictions

o thermal modelling, for forced-air ventilation or air conditioning options

o life cycle costs, for forced-air ventilation or air conditioning options

o backup power supply period calculations

o life cycle costs, for backup power supply options

• specific design assumptions, constraints, limitations, and parameters; including the

following:

o site criticality assessment

o temperature and humidity limits that apply to equipment

o IP code constraints that apply to equipment

Reservations for rack cabinets, rails, enclosures and rack units within cabinets shall be

allocated and managed through consultation and consensus with all stakeholders with assets

and systems in the equipment room or cubicle.

6.2.4. Asset classification Equipment rooms and cubicles shall be classified as follows in accordance with

T MU AM 02002 TI Asset Classification System:

• Level 1 - property discipline

• Level 2 - facilities asset class




• Level 3 - communications system location asset function

Engineering assurance shall be provided for equipment rooms and cubicles as an integrated

facility of assets and systems, including technical assurance and approvals by competent

subject matter experts.

6.2.5. Human factors

The work area design and layout of equipment rooms and cubicles shall incorporate the

principles of human factor integration as described in T MU HF 00001 ST Human Factors

Integration – General Requirements.

In order to minimise the risk of injury, consideration should be given to the placement of

equipment between the hip and shoulder height in accordance with the nature of the tasks

performed:

• tasks that are frequently performed

• tasks that involve heavier items

• tasks that are difficult or complex

• tasks that are of a longer duration

6.3. Australian standards The equipment rooms, cubicles and associated pathways shall comply with AS/NZS 3084:2017

and AS/NZS ISO/IEC 14763.2:2014.

However, the requirements of this standard take precedence over AS/NZS 3084:2017 and

AS/NZS ISO/IEC 14763.2:2014 where they differ.

7. Location The requirements for location are provided in Section 7.1 to Section 7.5.

Stations and stops shall be provided with a minimum of one network access equipment room or

cubicle as defined in Section 8.1.

Equipment rooms for network distribution and network core shall not be located on platforms.

7.1. Earth potential rise zone Equipment rooms and cubicles shall not be located within an earth potential rise (EPR) hazard

zone unless permitted by T HR TE 21002 ST Communications Earthing and Surge

Suppression.




7.2. Catch points Equipment rooms and cubicles shall be located greater than 40 m beyond the point of

derailment at catchpoints as defined in ESC 250 Turnouts and Special Trackwork.

7.3. Water infiltration Equipment rooms and cubicles shall have a minimum finished floor level of 300 mm above the

average of 1 in 100-year flood level.

Equipment rooms and cubicles shall have a minimum finished floor level of 150 mm above the

external finished ground level.

Cubicles shall have a minimum IP code of IPX6 for water ingress.

7.4. Access Personnel and vehicular access shall be designed to meet the operational and maintenance

service level requirements.

7.4.1. Personnel access Equipment rooms shall be situated to allow 24-hour personnel access.

Equipment rooms shall be situated such that personnel are not required to enter into areas

where they can be struck by rolling stock, vehicles or vessels.

7.4.2. Vehicular access and equipment delivery C4 rated equipment rooms shall be provided with reserved on-site parking for operations and

maintenance.

Refer to Section A4 of AS/NZS 3084:2017 for considerations for equipment delivery.

7.5. Geographical diversity If an equipment room or cubicle is rated as C1, C2, or C3, then all critical services shall be

provided by one or more additional geographically diverse sites such that the residual

consequence rating is reduced to C4, C5, or C6.

8. Size Equipment rooms, cubicles, and associated pathways shall be sized to accommodate present,

proposed and projected equipment and cabling infrastructure for at least 10 years.




The sizing shall be justified by historical asset information, committed projects and initiatives,

and future technology trends. Refer to Transport for NSW, Future Transport Technology,

Roadmap 2016 for further information.

8.1. Network access Equipment rooms and cubicles that provide network access shall contain only network

termination devices, customer access equipment and customer cabling as defined in

AS/CA S009. They shall provide telecommunication services to a single premise.

Note: Network access equipment rooms and cubicles typically contain network

termination and end-user equipment, and provide telecommunication services to a

single station, stop or depot.

At a minimum, network access equipment rooms and cubicles shall be of sufficient size to

accommodate the following:

• one rack cabinet or cubicle fitted with rails

• primary power supply and switchboards

• one cable entry and distribution frame

• cable management systems

Note: Rack cabinets of nominal dimensions greater than 600 mm wide by 600 mm

deep are not necessary to accommodate network termination devices and customer

access equipment.

8.2. Network distribution Equipment rooms that provide network distribution shall contain telecommunications network

equipment as defined in AS/CA S009 and provide telecommunication services to multiple

premises. They may also contain customer access equipment and customer cabling as defined

in AS/CA S009.

Note: Network distribution equipment rooms typically contain telecommunications

network provider equipment, and provide telecommunication services to multiple

stations, stops, and depots. They have a consequence rating of C5.

At a minimum, network distribution equipment rooms shall be of sufficient size to accommodate

the following:

• four-rack cabinets

• primary power supply, backup power supply and switchboards




• two cable entries and two distribution frames


8.3. Network core Equipment rooms that provide network core contain telecommunications network equipment as

defined in AS/CA S009 and provide telecommunication services to multiple premises.

At a minimum, network core equipment rooms shall be of sufficient size to accommodate the

following:

• eight-rack cabinets

• primary power supply, alternative power supply, backup power supply and switchboards

• two cable entries and two distribution frames


• active HVAC systems

9. Provisioning The requirements for provisioning are provided in Section 9.1 to Section 9.9. These

requirements are in addition to AS/NZS 3084:2017 and AS/NZS ISO/IEC 14763.2:2014 and

address the hazard where proposed and projected expansion requirements cannot be met.

Equipment rooms, cubicles, and associated pathways shall be provisioned to accommodate

present, proposed and projected equipment and cabling infrastructure for at least 10 years.

The provisioning shall be justified by historical asset information, committed projects and

initiatives, and future technology trends. Refer to the Future Transport Technology, Roadmap

2016 for further information.

9.1. Layout The layout requirements are provided in Section 9.1.1 to Section 9.1.3.

Refer to Appendix A for informative examples of equipment room layouts.

9.1.1. Rack cabinets and rails Equipment shall be mounted in rack cabinets or on rails in accordance with the requirements

stated in T MU TE 81001 ST Telecommunication Equipment – Physical Interfaces and

Environmental Conditions.

Rack cabinets shall be provisioned to mount telecommunications equipment in equipment

rooms.




Rack cabinets or rails shall be provisioned to mount telecommunications equipment in cubicles.

In equipment rooms, the minimum nominal rack cabinet dimensions shall be 600 mm wide by

600 mm deep.

Rack cabinets shall be 42 RU full height racks.

Note: TfNSW has selected 42 RU full height racks to maximise the efficient use of

limited space whilst minimising the need for ladders for routine operations and

maintenance tasks.

Rack cabinets shall be levelled and permanently affixed to the floor.

Rails shall be permanently affixed to the cubicle.

9.1.2. Clearances for working and equipment delivery Where access is required to work on equipment during operate and maintain stage of the asset

life cycle, a minimum clearance shall be maintained as follows:

• For equipment rooms within existing buildings, provided that the relevant performance

requirements of the NCC, volume 1 are met, this requirement may be satisfied by a

minimum clearance of 0.9 m.

• Otherwise, this requirement may be satisfied by a minimum clearance of 1 m.

A minimum clearance for equipment delivery shall be maintained to the front face of racks and

rails as follows:


requirements of the NCC, volume 1 are met, this requirement may be satisfied by a

minimum clearance, either the greater of 0.9 m or the maximum rack cabinet dimension

with an additional clearance of 0.3 m.

• Otherwise, this requirement may be satisfied by a minimum clearance, that is, the greater

of 1 m or the maximum rack cabinet dimension with an additional clearance of 0.3 m.

Figure 1 shows the working and equipment delivery for various size racks within a new building.




Working clearances

Equipment delivery

clearances

Rear face

Front face

0.6m 0.

8m 1.0m

1.0m

1.3m 1.

1m 1.0m

1.0m

1.0m

Figure 1 - Clearances for working and equipment delivery

9.1.3. Paths of travel In equipment rooms, an unobstructed path of travel to an exit shall be provided as a means for

escape in the case of fire or other emergency as follows:


requirements of the NCC, volume 1 are met, this requirement may be satisfied by a path of

minimum unobstructed width of 0.6 m.

• Otherwise, this requirement may be satisfied by a path of minimum unobstructed width of

1 m.

In equipment rooms, an unobstructed path of travel from a doorway to the point of installation

shall be provided for equipment delivery as follows:


requirements of the NCC, volume 1 are met, this requirement may be satisfied by a path of

minimum unobstructed width, that is, the greater of 0.9 m or the maximum rack cabinet

dimension with an additional clearance of 0.3 m.

• Otherwise, this requirement may be satisfied by a path of minimum unobstructed width that

is the greater of 1 m or the maximum rack cabinet dimension with an additional clearance

of 0.3 m.




9.2. Doors In equipment rooms, entrance doors shall open inwards unless otherwise required by statutory

instrument.

Signage and floor markings shall warn staff and customers of hazards associated with the

direction of opening of entrance doors.

9.3. Heating ventilation and air-conditioning The requirements for heating, ventilation and air-conditioning (HVAC) in equipment rooms and

cubicles are provided in Section 9.3.1 to Section 9.3.5.

9.3.1. Temperature and humidity limits The temperature and humidity limits guidelines within AS/NZS 3084:2017 do not apply.

The interior environmental conditions that the equipment rooms or cubicles shall provide are

defined in T MU TE 81001 ST and IEC 62498-3 Railway applications – Environmental

conditions for equipment – Part 3: Equipment for signalling and telecommunications.

The external ambient environmental conditions are defined in T MU EN 00005 ST Ambient

Environmental Conditions.

IEC 62498-3 defines the environmental conditions for equipment used for railway applications at

different sites.

Table 1 shows how equipment rooms and cubicles map to the definitions within IEC 62498-3.

Refer to IEC 62498-3 for the definitions of cubicle, shelter and building.

Table 1 - Environmental conditions for equipment rooms and cubicles

Equipment room or cubicle IEC 62498-3 sites IEC 62498-3 temperature or climate control

Cubicle Cubicle Not applicable

C6 equipment room Shelter Building

Without temperature control Without climate control

C5 equipment room Shelter Building

With or without temperature control With or without climate control

C4 equipment room Building With climate control

Heating shall not be used.

Equipment rooms and cubicles shall be fitted with sensors to monitor and alarm on the internal

ambient temperature.




9.3.2. Air handling capacity

The air handling requirements shall be calculated in accordance with AS/NZS 3084:2017 and

take into account the following:

• cooling demands associated with continuous operation of active equipment in present,

proposed and projected configurations

• cooling demand associated with lighting

• additional design margin of 10%

9.3.3. Energy efficiency Equipment rooms shall comply with the relevant requirements of the NSW Government

Resource Efficiency Policy, For a resource productive public sector with less impact on the

environment, including E2, E3 and E4.

Note: An equipment room is considered a telecommunication data centre and

therefore only the infrastructure data centre NABERS energy rating applies.

C6 and C5 rated equipment rooms shall be designed, built and commissioned to achieve a

minimum data centre infrastructure NABERS energy rating of 6.

Passive design shall be used in cubicles, and C6 and C5 rated equipment rooms unless one or

both of the following apply:

a. thermal modelling demonstrates that the internal yearly average temperatures in

IEC 62498-3 is exceeded in present, proposed or projected configurations

b. it is demonstrated that the life cycle cost, in accordance with T MU AM 01001 ST, of an

alternate design that includes forced-air ventilation or air-conditioning, or both, is less than

a passive design over the design life

9.3.4. Continuity of active HVAC systems Where forced-air ventilation or air-conditioning is used to maintain interior environmental

conditions, active HVAC systems shall be designed in a N+1 redundancy configuration or

better.

9.3.5. Dust ingress One of the following measures is required to mitigate the hazard of dust ingress:

• air intake to the room shall be filtered and room or cubicle positively pressurised

• equipment shall have a minimum IP code of IP5X




9.4. Lighting The lighting in equipment rooms and cubicles shall comply with the requirements of

AS/NZS ISO/IEC 14763.2:2014 Annex C or Annex E (as applicable), including the

recommendations.

9.5. Power The requirements for power in equipment rooms and cubicles are provided in Section 9.5.1 to

Section 9.5.6.

Socket-outlets shall comply with AS/NZS 3112 Approval and test specification - Plugs and

socket-outlets.

Power supply to equipment rooms and cubicles shall not be subject to load shedding.

9.5.1. Distribution power supply

The power load requirements shall be calculated for the distribution power supply using the

following considerations:

• actual power loads of equipment in present, proposed, and projected configurations

• rated power load of ancillary supply circuits

• rated power load of lighting and HVAC

• power load of stationary batteries (if used) when charging

• design margin of 10%

The distribution power supply to equipment rooms and cubicles shall be directly wired to the

safety services supply of the installation main switchboard (IMSB).

9.5.2. Backup power supply

The minimum backup time for essential equipment is 2 or 4 hours in accordance with

T HR SS 80002 ST Low Voltage Electrical Installations.

Note: Essential equipment includes safety service equipment (typically related to fire

and life safety) and equipment (typically related to non-fire emergency or ongoing

property operation) as explained in T HR SS 80002 ST.

The backup times for essential equipment shall be calculated for each site using reliability

engineering techniques to meet the operator’s performance requirements.

The backup power supply shall be capable of supplying the full load of essential equipment and

systems necessary to maintain interior environmental conditions.




The life cycle cost of backup power supplies shall be evaluated in accordance with

T MU AM 01001 ST over the design life, with and without the addition of an alternative power

supply.

Where stationary batteries are used as a backup power supply, the installation shall comply with

AS 3011 Electrical installations - Secondary batteries installed in buildings (all parts) and the

following parameters shall be used to dimension the capacity:

• temperature correction for internal yearly average temperatures as provided in

IEC 62498-3

• aging factor of 25%

• design margin of 10%

Where lead-acid batteries are used, the capacity shall be dimensioned according to IEEE 485

Recommended Practice for Sizing Lead-Acid Batteries for Stationary Applications.

Equipment rooms and cubicles shall be fitted with sensors to monitor remaining backup power

supply capacity.

9.5.3. Inlet for transportable generating set An appliance inlet for connection to a transportable generating set shall be provided for C5 and

C4 rated equipment rooms and cubicles.

An appliance inlet shall be provided either at the IMSB, or dedicated for the equipment room or

cubicle as follows:

• an external wall mounted appliance inlet with a minimum IP code of IP66 and a minimum

IK code of IK06

• labelled on 2-ply plastic engraving material with the unique code for the equipment room or

cubicle and the minimum set specification

The electrical installation of sets shall comply with AS/NZS 3010 Electrical installations –

Generating sets.

9.5.4. Electrical distribution The electrical distribution system shall provide dedicated low voltage (LV) ac circuits for

essential and ancillary equipment.

Where racks are reserved for essential equipment that accepts multiple power supply inputs,

the electrical distribution system shall provide additional LV ac or extra low voltage dc supply

circuits.




9.5.5. Low voltage ac socket-outlets for essential equipment

Single 15 A switched combination socket-outlets shall be affixed above each rack reservation.

LV socket-outlets shall be coloured-coded orange.

LV socket-outlets shall have a minimum IP code of IP44 and a threaded retaining device.

Ancillary equipment, such as test equipment and maintenance laptops, shall not be connected

to essential supply circuits.

9.5.6. Low voltage ac socket-outlets for ancilliary equipment A double 10 A switched socket-outlet shall be affixed inside cubicles and to each internal wall of

equipment rooms.

LV socket-outlets shall be coloured-coded white.

9.6. Equipment earthing The earthing and surge suppression requirements for equipment rooms and cubicles shall

comply with the requirements in T HR TE 21002 ST.

9.7. Electrostatic discharge protected area C4 rated equipment rooms shall comply as an electrostatic discharge protected area as defined

in IEC 61340-5-1 Electrostatics – Part 5-1: Protection of electronic devices from electrostatic

phenomena – General requirements.

9.8. Occupational noise management Noise control techniques shall be incorporated into the design for expected tasks and durations

as defined in AS/NZS 1269.2 Occupational noise management - Noise control management to

achieve compliance to SafeWork NSW, Managing Noise and Preventing Hearing Loss at Work

code of practice.

9.9. Physical security The physical security of equipment rooms and cubicles shall comply with the core and

supporting requirements in the following Australian Government, Attorney- General's

Department publications for physical security:

• Protective Security Policy Framework - 15 Physical security for entity resources

• Protective Security Policy Framework - 16 Entity facilities

A security risk assessment shall determine the applicability of control measures.




C6 rated equipment rooms and cubicles shall comply as a ‘Zone Two’ restricted access area,

unless determined otherwise by the security risk assessment.

Figure 2 shows a C6 rated equipment room or cubicle located within a public area, such as an

equipment room or cubicle that opens directly onto a railway platform or light rail stop.

Rail corridors and segregated alignments shall be considered ‘Zone One’ irrespective of

boundary fencing.


Figure 2 - C6 rated equipment room or cubicle – ‘Zone Two’ restricted access area within a public area

C5 and C4 rated equipment rooms and cubicles shall comply as a ‘Zone Three’ restricted

access area, unless determined otherwise by the security risk assessment.

C4 rated equipment rooms and cubicles shall be fully located and layered within a ‘Zone Two’

restricted access area.

Figure 3 shows a C5 rated equipment room or cubicle located within a public area, such as an

equipment room or cubicle that opens directly onto a railway platform or light rail stop.



Figure 3 - C5 rated equipment room or cubicle – ‘Zone Three’ restricted access area within a public area

Figure 4 shows a C4 rated equipment room or cubicle located within a building complex with

layered zones to increase the level of protection.

Figure 4 - C4 rated equipment room or cubicle – ‘Zone Three’ restricted access area within a building complex

Note: The following consequence rating is aligned with the business impact levels as

defined in PSPF security planning and risk assessment:

• criticality ratings C6 and C5 aligns to ‘low to medium impact’ due to compromise,

loss or damage of physical assets or compromise of information confidentiality

• criticality rating C4 aligns to ‘high business impact’ due to compromise, loss or

damage of physical assets




10. Horizontal pathways Horizontal pathways shall provide a defined route for floor cables.

For equipment rooms, cable trays and trunking systems shall be hot-dip galvanised steel that is

compliant with T HR SS 80002 ST.

Cable trays and trunking system shall be installed for floor cabling between all reservations for

rack cabinets and enclosures.

11. Building backbone pathways The requirements for building backbone pathways within AS/NZS 3084:2017 and

AS/NZS ISO/IEC 14763.2:2014 apply.

Note: This section is included for alignment to AS/NZS 3084:2017. There are no

additional requirements.

12. Campus backbone pathways and related spaces Optical fibre cables shall be used for campus backbone pathways. Optical fibre cables shall

comply with TfNSW standards.

Equipment rooms and cubicles normally interface to campus backbone cable installed within

pathways owned by TfNSW.

Equipment rooms and cubicles that are entrance rooms or spaces shall interface using

underground pathways. The underground pathway consists of trenches, conduits, pits and

cables.

C5 and C4 rated equipment rooms that are entrance rooms or spaces shall interface using two

separate underground pathways as shown in Figure 5.




Building e.g. station, stop

Entrance room or space

C5 or C4 rated equipment room

≥ 5 m

≥ 1 m

≤ 10

m

Cable entry pit(secondary)

Slack pit(secondary)

Trench and conduits(primary)

Trench and conduits

(secondary)

Campus backboneCable entry pit(primary)

Slack pit(primary) ≥ 20 m

Figure 5 - Underground pathways for C5 and C4 rated equipment rooms

C6 rated equipment rooms and cubicles that are entrance rooms or spaces shall interface using

at least one underground pathway as shown in Figure 6.

Building e.g. station, stop

Entrance room or space

C6 rated equipment room

orcubicle

Cable entry pit(primary)

≤ 10

mTrench and conduits(primary)

Campus backbone


Figure 6 - Underground pathway for C6 rated equipment rooms and cubicles



12.1. Trenches For C6 rated equipment rooms and cubicles, conduits shall be in one or more trenches of a

maximum length of 10 m.

For C5 and C4 rated equipment rooms, the following separation requirements shall be satisfied

as shown in Figure 5:

• conduits shall be in separate trenches

• minimum separation of 5 m between the trenches, except for a maximum length of 10 m,

where the minimum separation may be gradually reduced to 1 m

12.2. Conduit layout design Conduits shall have a nominal internal diameter of 100 mm.

For C6 rated equipment rooms and cubicles, two conduits shall be provided to the cable entry

pit.

For C5 and C4 rated equipment rooms, three conduits shall be provided per trench to cable

entry pits.

12.3. Pit design Each underground pathway shall have an associated pit for the purpose of cable splicing,

known as a cable entry pit.

In addition, the underground pathway for C5 and C4 rated equipment rooms shall have an

associated pit for storing coiled optical fibre cable, known as a slack pit.

Pits shall be full pit type (items 5 or 6) reinforced pre-cast concrete cable pits as defined in

SPM 0123 Reinforced Pre-Cast Concrete Cable Pits.

For C5 and C4 rated equipment rooms, a minimum separation of 20 m between cable entry pits

shall be provided as shown in Figure 5.

Pits shall not be located within an EPR hazard zone.

12.4. Cabling Cabling shall comply with the requirements of T HR TE 01001 ST Communication Outdoor

Cabling, except that copper communications cable shall not be used in new or substantially

altered pathways.




Appendix A Informative examples of equipment room layouts

Figure 7, Figure 8, Figure 9 and Figure 10 show simplified informative examples of equipment

room layouts.

Enclosurereservation

Rack cabinetreservation

Front face

DFSB

0.9m

Clearances for switchboards – Refer AS/NZS 3000

Clearances for distribution frames – Refer AS/CA S009

Path of travel to an exit – Refer Section 9.1.3

Clearances for working and equipment delivery – Refer Section 9.1.2

2400mm

1700

mm


Figure 7 – Network access equipment room in an existing building



SB

DF

Enclosure reservations

Rack cabinet reservations

DF

Front face

Rear face

SB

4600mm

2600

mm

0.9m

0.9m






Figure 8 – Network distribution equipment room in an existing building



SB

4800mm

2800

mm

DF

SB



DF

Front face

Rear face

1.0m

1.0m






Figure 9 – Network distribution equipment room



SB


4800mm

4700

mm

DF

SB


DF

Front face

Rear face


Rear face

Front face

1.0m

1.0m

1.1m






Figure 10 – Network core equipment room

Documents

T MU MD 21001 ST Equipment Rooms and Cubicles …T MU MD 21001 ST Equipment Rooms and Cubicles for Programmable Electronic Systems Version 1.0 Issue date: 19 July 2019 Preface The