T MU TE 21001 ST Equipment Rooms and CubiclesT MU TE 21001 ST Equipment Rooms and Cubicles Version 1.0 Issued date: 21 September2015 Preface The Asset Standards Authority (ASA) is

Technical Note – TN 019: 20182018 S

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Technical Note – TN 019: 2018

Subject: Clarification to T MU TE 21001 ST Equipment Rooms and Cubicles, v1.0

Issue date: 14 August 2018

Effective date: 14 August 2018

For queries regarding this document [email protected]

www.transport.nsw.gov.au

This technical note has been issued by the Asset Standards Authority (ASA) as an update to

T MU TE 21001 ST Equipment Rooms and Cubicles, version 1.0 to clarify the minimum

requirements for rack frame dimensions, access clearances and egress pathways, and the

opening direction of external doors.

This following sections relating to provisioning of walk-in and shallow rooms are modified:

• Section 9.1.1 Racks and rails

• Section 9.1.2 Clearances and pathways

1. Section 9.1.1 Racks and rails Replace the contents in its entirety with the following:

Operational equipment shall be mounted in racks or on rails in accordance with the requirements

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

Environmental Conditions.

Racks shall be used to mount operational equipment in equipment rooms.

Racks or rails shall be used to mount operational equipment in cubicles.

In walk-in and shallow rooms, the minimum rack frame dimensions shall be 600 mm wide and

600 mm deep and provide 42 RU.

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2. Section 9.1.2 Clearances and pathways Replace the contents in its entirety with the following:

A minimum access clearance of at least 1 m shall be maintained on the front and back of racks,

where access is required for operations or maintenance.

A minimum access clearance shall be maintained on the front, back, or both front and back of

racks, where access is required for the safe installation and removal of equipment and racks. The

minimum access clearance shall be the greater of 1 m or the maximum rack frame depth with an

additional clearance of 0.3 m.

In walk-in rooms, an egress pathway with an unobstructed width of 1 m shall be provided.

Note: Additional clearances may apply in relation to switchboards. Refer to

AS/NZS 3000.

In walk-in rooms, an external door shall open inwards if both of the following conditions are met:

• an outwards opening door is not required by statutory instrument

• an outwards opening door would open onto a customer use area

Note: Statutory instruments, such as the NCC and AS/NZS 3000 may require a door to

open outwards to facilitate egress in an emergency.

Otherwise, in walk-in rooms, an external door shall open outwards.

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

direction of opening of external doors.

For cubicles, the concrete pad shall include a clearance of 1 m on all sides.

Authorisation:

Technical content prepared by

Checked and approved by

Interdisciplinary coordination checked by

Authorised for release

Signature

Date

Name James Piper Trevor Payne Peter McGregor Jagath Peiris

Position Principal Engineer (Rail Systems)

Lead Engineer Telecommunications

A/Chief Engineer Director Network Standards and Services

© State of NSW through Transport for NSW 2018 Page 2 of 2

Technical Note - TN 082: 2016

© State of NSW through Transport for NSW Page 1 of 1

For queries regarding this document

[email protected] www.asa.transport.nsw.gov.au

Technical Note - TN 082: 2016 Issued date: 21 December 2016

Subject: Revised reference to risk criteria This technical note has been issued by the Asset Standards Authority (ASA) to notify the

following.

• The risk criteria to be used by the Authorised Engineering Organisations (AEOs) providing

engineering services to TfNSW are contained in T MU MD 20002 ST Risk Criteria for

Organisations Providing Engineering Services, version 1.0.

• 30-ST-164 TfNSW Enterprise Risk Management (TERM) Standard provides the risk criteria

to be used by TfNSW.

• All references to the TERM standard in this document, where applicable to AEOs, shall read

as T MU MD 20002 ST.

Authorisation:

Technical content prepared by

Checked and approved by

Interdisciplinary coordination checked by

Authorised for release

Signature

Date

Name Richard Adams Andy Tankard Andy Tankard Graham Bradshaw

Position Manager Safety and Risk Assurance

Principal Manager SQER

Principal Manager SQER

Director Network Standards and Services

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mailto:[email protected]

mailto:[email protected]

http://www.asa.transport.nsw.gov.au/

Equipment Rooms and Cubicles

T MU TE 21001 ST

Standard

Version 1.0

Issued date: 21 September 2015

Important Warning 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. You must not use or adapt it or rely upon it in any way unless you are authorised in writing to do so by a relevant NSW Government agency. 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. This document is uncontrolled when printed or downloaded. Users should exercise their own skill and care in the use of the document. This document may not be current. Current standards may be accessed from the Asset Standards Authority website at www.asa.transport.nsw.gov.au. © State of NSW through Transport for NSW S

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T MU TE 21001 ST Equipment Rooms and Cubicles

Version 1.0 Issued date: 21 September 2015

Standard governance

Owner: Lead Telecommunications Engineer, Asset Standards Authority

Authoriser: Chief Engineer Rail, 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.

For queries regarding this document, please email the ASA at [email protected] or visit www.asa.transport.nsw.gov.au

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Preface The Asset Standards Authority (ASA) is an independent unit within Transport for NSW (TfNSW)

and is the network design and standards authority for defined NSW transport assets.

The ASA is responsible for developing engineering governance frameworks to support industry

delivery in the assurance of design, safety, integrity, construction, and commissioning of

transport assets for the whole asset life cycle. In order to achieve this, the ASA effectively

discharges obligations as the authority for various technical, process, and planning matters

across the asset life cycle.

The ASA collaborates with industry using stakeholder engagement activities to assist in

achieving its mission. These activities help align the ASA to broader government expectations

of making it clearer, simpler, and more attractive to do business within the NSW transport

industry, allowing the supply chain to deliver safe, efficient, and competent transport services.

The ASA develops, maintains, controls, and publishes a suite of standards and other

documentation for transport assets of TfNSW. Further, the ASA ensures that these standards

are performance-based to create opportunities for innovation and improve access to a broader

competitive supply chain.

This document provides a standard for the construction, fit-out, safety and environmental

sustainability of equipment rooms and cubicles that contain operational telecommunications

equipment or technology.

This standard supersedes T HR TE 21001 ST Telecommunications Equipment Rooms.

This standard is a first issue.

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Table of contents 1. Introduction .............................................................................................................................................. 5

2. Purpose .................................................................................................................................................... 5 2.1. Scope ..................................................................................................................................................... 5 2.2. Application ............................................................................................................................................. 5

3. Reference documents ............................................................................................................................. 6

4. Terms and definitions ............................................................................................................................. 8

5. Risk classification of equipment rooms and cubicles....................................................................... 11

6. General requirements ........................................................................................................................... 11 6.1. Construction requirements ................................................................................................................... 11 6.2. Fit-out requirements ............................................................................................................................. 12 6.3. Safety requirements ............................................................................................................................. 13 6.4. Environmental sustainability requirements .......................................................................................... 13

7. Site selection .......................................................................................................................................... 13 7.1. Earth potential rise zone ...................................................................................................................... 13 7.2. Catch points ......................................................................................................................................... 13 7.3. Flood levels .......................................................................................................................................... 14 7.4. Access ................................................................................................................................................. 14

8. Sizing requirements .............................................................................................................................. 14 8.1. Walk-in rooms ...................................................................................................................................... 14 8.2. Shallow rooms ..................................................................................................................................... 16

9. Provisioning ........................................................................................................................................... 16 9.1. Layout .................................................................................................................................................. 17 9.2. Temperature and humidity limits.......................................................................................................... 17 9.3. Heating, ventilation and air conditioning .............................................................................................. 18 9.4. Power ................................................................................................................................................... 19 9.5. Earthing and surge suppression .......................................................................................................... 21 9.6. Electrostatic discharge ......................................................................................................................... 21 9.7. Noise control ........................................................................................................................................ 21 9.8. Physical security .................................................................................................................................. 22

10. Intra-building pathways ........................................................................................................................ 23 10.1. Access flooring ................................................................................................................................ 23 10.2. Cable trays and wireways ................................................................................................................ 23

11. Intra-building backbone pathways ...................................................................................................... 23

12. Inter-building backbone pathways ...................................................................................................... 24 12.1. Trenches and conduits .................................................................................................................... 24 12.2. Pits ................................................................................................................................................... 25 12.3. Lead-in cable ................................................................................................................................... 25

13. Schedule ................................................................................................................................................. 25


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1. Introduction Equipment rooms and cubicles are required to house the operational telecommunications or

technology that supports freight and passenger transport services.

This standard has been revised and restructured from T HR TE 21001 ST Telecommunications

Equipment Rooms, to improve the alignment and readability of the document in accordance

with AS/NZS 3084:2003 Telecommunications installations – Telecommunications pathways and

spaces for commercial buildings.

2. Purpose This document specifies the requirements for the construction, fit-out, safety and environmental

sustainability of equipment rooms and cubicles that contain operational telecommunications

equipment or technology.

2.1. Scope The scope of this document includes requirements for the following:

• construction, fit-out, safety and environmental sustainability

• site selection

• sizing

• provisioning

• intra-building backbone pathways

• inter-building backbone pathways

2.2. Application This standard applies to any space that contains operational telecommunications equipment or

technology for heavy rail, light rail and rapid transit.

This standard applies to new and altered assets and capital maintenance.

This standard does not apply to recurrent maintenance.

For new equipment rooms and cubicles, full compliance is required. Otherwise, compliance is

required to the applicable sections for the affected assets.

This standard does not apply to contracts and tenders released before the publication of this

document.

The minimum mandatory requirements in this standard may not be sufficient for housing

safety-related equipment.


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

additional requirements for telecommunication facilities within high voltage locations.

This standard should be read in conjunction with AS/NZS 3084:2003.

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

EN 50125-3 Railway applications – Environmental conditions for equipment – Part 3: Equipment

for signalling and telecommunications

IEC 60309-1 Plugs, socket-outlets and couplers for industrial purposes - Part 1: General

requirements

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

phenomena – General requirements

IEC 62262 Degrees of protection provided by enclosures for electrical equipment against

external mechanical impacts (IK code)

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

Australian standards

AS/NZS 1269.2 Occupational noise management - Noise control management

AS 2201.1:2007 Intruder alarm systems - Client's premises - Design, installation,

commissioning and maintenance

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

AS/NZS 3010 Electrical installations – Generating sets

AS/NZS 3084:2003 Telecommunications installations – Telecommunications pathways and

spaces for commercial buildings

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

AS 4154 General access floors (elevated floors)

AS 60529 Degrees of protection provided by enclosures (IP Code)

AS/CA S008 Requirements for customer cabling products

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


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Transport for NSW standards

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 04001 PL TfNSW Configuration Management Plan

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 61003 ST Public Address Systems

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

Conditions

T HR TE 81002 ST Telecommunication Equipment – Network Management

30-ST-164 TfNSW Enterprise Risk Management (TERM) Standard

Legislation

Work Health and Safety Act 2011

Other reference documents

NSW Government Resource Efficiency Policy

NSW Code of Practice – Safe Design of Structures

NSW Code of Practice – Hazardous Manual Tasks

NSW Code of Practice – Managing the Work Environment and Facilities

NSW Code of Practice – Managing Noise and Preventing Hearing Loss at Work

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

Australian Government Physical security management guidelines - Security zones and risk

mitigation controls

Australian Government Physical security management guidelines - Physical security of ICT

equipment, systems and facilities

Australian Government Physical security management guidelines – Business impact levels

Rail Industry Safety and Standards Board website glossary

National Construction Code Building Code of Australia


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

ac alternating current

ancillary equipment used to support operational equipment such as test equipment and

maintenance laptops

AEO Authorised Engineering Organisation

BCA Building Code of Australia

building (as defined in EN 50125-3) permanent construction provided with main services (e.g.

water, electricity, gas,...) designed to protect equipment against the action of environmental

conditions. A building may or may not be provided with climatic control

capital maintenance also referred to as renewals, is the refurbishment or replacement of an

existing asset, that has reached the end of its useful life, with a new asset capable of providing

the current or agreed alternative level of service as the existing asset. Capital maintenance is

funded from the CAPEX budget.

C.C. (as defined in clause 3.4 of EN 50125-3) with climatic control

CCTV closed-circuit television

configuration item an entity within a configuration that satisfies an end use function

container (as defined in EN 50125-3) shelters/containers are normally provided when a larger

volume of equipment is to be co-located at a single point or temperature/humidity sensitive

equipment is to be installed.

Shelters/containers normally have double walls with insulation material (or an air gap) between

them. Shelters/containers also normally have limited facilities for personnel.

Shelters/containers may also be provided with temperature control, especially where

temperature sensitive apparatus is installed.

Where shelters/containers are fitted with climatic control (temperature and humidity control),

they shall be treated as buildings with climatic control (buildings C.C.).

cubicle (as defined in EN 50125-3) housing for apparatus which normally is used to co-locate

various parts of the signalling or telecommunications system equipment, on occasion from

different suppliers. It may contain various equipment housings installed within the cubicle and

offers further environmental protection.

A cubicle is normally only used to install apparatus and is in general not sufficiently large to

afford protection from weather to staff working on the apparatus.

No climatic or temperature control is provided on cubicles but ventilation or occasionally fan

assisted ventilation is required. © State of NSW through Transport for NSW Page 8 of 25 S

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Large housings which allow access to personnel but do not have the thermal properties of

shelters, should be treated as cubicles.

danger zone (as defined in the Rail Industry Safety and Standards Board website glossary)

everywhere within 3m horizontally from the nearest rail and any distance above or below this

3m, unless a safe place exists or has been created

dc direct current

EPR earth potential rise

EPR hazard zone a zone where the EPR may exceed 430 V ac under power system fault

conditions

high voltage location RailCorp high voltage locations including traction substations, section

huts and switching substations

HVAC heating, ventilation and air conditioning

ICT information and communications technology

IP code (as defined in AS 60529) 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

IK code (as defined in IEC 62262) coding system to indicate the degree of protection provided

by an enclosure against harmful external mechanical impacts

NABERS national Australian built environment rating system

N.C.C. (as defined in clause 4.3 of EN 50125-3) without climatic control

new and altered assets the changes made to the rail network, other than those as a result of

maintenance activities, including decommissioning and removal of assets from the rail network.

Maintenance activities are considered those made by Authorised Engineering Organisations

(AEOs) with authorisation for maintenance activities and conducted under that authorisation

scope.

N.T.C. (as defined in clause 4.3 of EN 50125-3) without temperature control

operational technology hardware or software that monitor or control assets that support freight

or passenger transport services

operational equipment operational telecommunications equipment or technology

operational associated with the delivery of freight or passenger transport services

rail corridor (as defined in the Rail Industry Safety and Standards Board website glossary) 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.


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recurrent maintenance also referred to as routine maintenance, is the regular ongoing

day-to-day work that includes the immediate prevention and correction of failures/defects in

assets to ensure the assets are in a safe and operational state. Recurrent maintenance is

funded from the OPEX budget.

room space within a shelter, container or building (as shelter, container and building are

defined in EN 50125-3)

RU rack unit = 44.45 mm

safe place (as defined in the Rail Industry Safety and Standards Board website glossary)

1. A place where workers and equipment cannot be struck by rail traffic.

2. A safe place is a place where no track worksite protection is provided and is either:

• a properly constructed refuge to an approved design;

• behind the safety line on a platform;

• a place where a structure or physical barrier has been erected to provide protection but

includes subways and overhead bridges;

• a place that is not on or near the track.

shallow room space that does not provide rear access to rack-mounted equipment

shelter (as defined in EN 50125-3) shelters/containers are normally provided when a larger

volume of equipment is to be co-located at a single point or temperature/humidity sensitive

equipment is to be installed.

Shelters/containers normally have double walls with insulation material (or an air gap) between

them. Shelters/containers also normally have limited facilities for personnel.

Shelters/containers may also be provided with temperature control, especially where

temperature sensitive apparatus is installed.

Where shelters/containers are fitted with climatic control (temperature and humidity control),

they shall be treated as buildings with climatic control (buildings C.C.)

space (as defined in AS/NZS 3084:2003) area used for housing the installation and termination

of telecommunications equipment and cabling

TERM TfNSW Enterprise Risk Management

T.C. (as defined in EN 50125-3) with temperature control

UNI user network interface

UPS uninterruptible power supply


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5. Risk classification of equipment rooms and cubicles For applying this standard, all risks shall be assessed using the risk matrix defined in 30-ST-164

TfNSW Enterprise Risk Management (TERM) Standard.

A principal consequence descriptor is 'customer experience / operational reliability' which

reflects the duration and scale of disruptions associated with the loss of all services from the

equipment room or cubicle.

The project shall determine the TERM consequence rating for equipment rooms and cubicles

from C6 ‘insignificant’ to C4 ‘moderate’.

Cubicles shall only be used where the TERM consequence rating is C6 ‘insignificant’.

If an equipment room is assessed as C4 ‘moderate’ then an additional geographically diverse

equipment room is required and all services assessed as C4 shall be provided using redundant

system architecture across the two rooms.

6. General requirements Stations and stops shall be provided with a minimum of one equipment room or cubicle for

operational equipment.

Where the horizontal cable pathway distance to data terminal equipment exceeds 90 m,

additional equipment rooms or cubicles are required.

Section 6.1 through to Section 6.4 specifies the general requirements for equipment rooms and

cubicles.

6.1. Construction requirements The construction of equipment rooms and cubicles shall comply with the National Construction

Code Building Code of Australia (BCA).

Note that in regards to interpretation under the BCA:

• Where an equipment room is part of building, it may be considered to be a 'plant

room' and therefore the 'same classification as the part of the building in which it is

situated'

• Where an equipment room is not part of building, it may be considered a Class

10a non-habitable building

• Cubicles may be considered a Class 10b structure

Cubicles shall be fastened to a concrete pad.

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6.2. Fit-out requirements The fit-out of equipment rooms and cubicles shall comply with AS/NZS 3084:2003.

The requirements of this standard take precedence where there is a difference to the

requirements of AS/NZS 3084:2003.

For interpreting AS/NZS 3084:2003, an equipment room is considered an 'equipment room' and

may also be an 'entrance room or space'.

Note the following sections of AS/NZS 3084:2003:

• 6.4 Equipment room

• 6.6 Entrance room or space

• 7 Building pathways

• ZA Supplementary general requirements for Australia and New Zealand

• ZB2.3 Intrabuilding telecommunications spaces – Equipment room

• ZB2.4 Intrabuilding telecommunications spaces – Entrance facilities

• ZB3 Intrabuilding pathways

• ZB4 Intra-building backbone pathways

• ZB5 Inter-building backbone pathways and related spaces

• ZB6 Miscellaneous items

Additional guidance is provided in sections ZC3 and ZC4 of AS/NZS 3084:2003.

The following sections of AS/NZS 3084:2003 do not apply:

• ZB2.3.3 Size

• ZB2.3.4.6.2 Temperature and humidity limits

• ZB2.4.4 Size

Cabling products (including cable and related customer equipment) intended for connection to

the customer side of the boundary of a telecommunications network shall comply with

AS/CA S008 Requirements for customer cabling products.

The installation and maintenance of fixed or concealed cabling or equipment that is connected,

or is intended to be connected, to a telecommunications network shall comply with AS/CA S009

Installation requirements for customer cabling (Wiring Rules).

The design, construction and verification of electrical installations shall comply with

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


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All configuration items shall be labelled with their assigned unique code as defined in

T MU AM 04001 PL TfNSW Configuration Management Plan.

6.3. Safety requirements The safe design of equipment rooms and cubicles shall comply with the Work Health and Safety

Act 2011 including the following:

• NSW Code of Practice – Safe Design of Structures

• NSW Code of Practice – Hazardous Manual Tasks

• NSW Code of Practice – Managing the Work Environment and Facilities

• NSW Code of Practice – Managing the Risk of Falls at Workplaces

6.4. Environmental sustainability requirements Equipment rooms shall comply with the relevant requirements of the NSW Government

Resource Efficiency Policy, namely E2, E3, E4 and A2.

Note that an equipment room is considered a telecommunication data centre and

therefore only the infrastructure data centre NABERS energy rating applies.

TERM consequence rated C6 and C5 equipment rooms shall be designed, built and

commissioned to achieve a minimum data centre infrastructure NABERS energy rating of 6.

7. Site selection The site selection requirements for equipment rooms and cubicles are provided in Section 7.1

through to Section 7.4.

Where equipment rooms are located within the rail corridor they shall be within stations, stops

and high voltage locations.

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.


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7.3. Flood levels For equipment rooms with a TERM consequence rating of C5 or C4, finished floor level shall be

a minimum of 300 mm above the average 1 in 100 year flood level.

7.4. Access Section 7.4.1 and Section 7.4.2 specifies the access requirements for equipment rooms and

cubicles.

Equipment rooms shall be located to allow 24-hour access for both personnel and vehicles.

7.4.1. Personnel access Access shall not require personnel to enter the danger zone.

For cubicles not located within stations and stops, sites shall be fenced with the gate on the

boundary of the rail corridor.

7.4.2. Vehicular access and equipment delivery For equipment rooms, vehicular access and reserved off-street parking shall be provided for

equipment delivery.

Reserved parking should be collocated with the accessible car parking spaces

associated with stations and stops to facilitate the use of access ways for equipment

delivery.

The slope of driveways or access pathways used for equipment delivery shall not exceed 8°.

Equipment delivery shall not require the use of stairs.

Access pathways and hallways used for equipment delivery shall allow the unimpeded

movement of an assembled rack of maximum dimensions.

Note that particular attention should be given to the requirements for equipment

delivery defined in Section ZC3.1 of AS/NZS 3084:2003.

8. Sizing requirements The sizing requirements for equipment rooms and cubicles are provided in Section 8.1 and

Section 8.2.

8.1. Walk-in rooms Walk-in rooms provide front and back access to rack-mounted equipment and front access to

freestanding equipment.


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The dimensions of walk-in rooms shall be as follows:

• minimum depth of 3300 mm

• minimum width of 3400 mm

The minimum depth and minimum width of walk-in rooms shall be as given in Table 1. These

measurements are based on the number of rack units of operational equipment.

Table 1 Minimum depth and width of walk-in rooms

Rack units of operational equipment (RU)

Total rack units (RU)

Number of racks

Rows of racks

Depth (mm) Width (mm)

20 80 2 1 3,300 3,400

40 160 4 1 3,300 5,000

60 240 6 1 3,300 6,600

80 320 8 2 5,400 5,000

100 400 10 2 5,400 6,600

120 480 12 2 5,400 6,600

Note that it is assumed that each rack unit of operational equipment requires an

additional three rack units for patching and cable management.

The minimum walk-in room is shown in Figure 1. The reserved spaces are indicative only.


Figure 1 Walk-in room sizing

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8.2. Shallow rooms Shallow rooms provide front-only access to rack-mounted equipment.

The dimensions of shallow rooms shall be as follows:

• depth of 700 mm

• width of 2000 mm

Note that the shallow room nominally contains 16 RU of operational equipment that

provides up to 768 UNI ports.

Note that it is assumed that each rack unit of operational equipment requires an

additional four rack units for power system allocation, patching and cable

management.

The shallow room is shown in Figure 2. The reserved spaces are indicative only.


Figure 2 Shallow room

9. Provisioning The provisioning requirements for equipment rooms and cubicles are provided in Section 9.1

through to Section 9.8.

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9.1. Layout The layout requirements for equipment rooms and cubicles are provided in Section 9.1.1

through to Section 9.1.2.

In equipment rooms, a space of a minimum of 600 mm wide and a minimum 600 mm deep shall

be reserved for each pathway entry for cable termination.

9.1.1. Racks and rails Operational equipment shall be mounted in racks or on rails in accordance with the

requirements stated in T HR TE 81001 ST Telecommunication Equipment – Physical Interfaces

and Environmental Conditions.

Racks shall be used to mount operational equipment in equipment rooms.

Racks or rails shall be used to mount operational equipment in cubicles.

In walk-in rooms, the maximum rack dimensions, including allowances for doors, shall be

800 mm wide, 900 mm deep (including 100 mm for front and rear rack doors) and provide 42

RU with front and back access.

In shallow rooms, the rack dimensions shall be 600 mm wide, 600 mm deep and provide 42 RU

with front access.

9.1.2. Clearance and pathways In walk-in rooms, a clearance of 1200 mm shall be maintained on the front and back of racks.

In walk-in rooms, an unimpeded egress pathway with a clearance width of 1200 mm shall be

provided as shown in Figure 1.

In walk-in rooms, the door shall open outwards to facilitate egress in an emergency.

In shallow rooms, a clearance of 1000 mm shall be maintained in front of the doors.

For cubicles, the concrete pad shall include a clearance of 1000 mm on all sides.

Note that where a clearance is specified it is derived from the maximum rack width or

depth with an additional clearance of 300 mm to allow for the decommissioning and

removal of equipment and racks.

9.2. Temperature and humidity limits The environmental conditions that equipment rooms or cubicles shall provide are defined in

section 9 of T HR TE 81001 ST and EN 50125-3 Railway applications – Environmental

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


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The mapping of equipment rooms and cubicles to EN 50125-3 shall be according to Table 2

where a tick () indicates a permissible configuration.

Table 2 Mapping of equipment cubicles and rooms to sites within EN 50125-3

Cubicle or room type

Cubicle Shelter (N.T.C.)

Shelter (T.C.)

Building (N.C.C.)

Building (C.C.)

Cubicle

C6 room

C5 room

C4 room

A sign shall be provided indicating the temperature and humidity limits that apply to operational

equipment.

9.3. Heating, ventilation and air conditioning The following parameters shall be included in dimensioning the heating, ventilation and air

conditioning (HVAC):

• heat produced when fully equipped as per Section 13

• heat produced by lights

• design margin of 10%

Passive design shall be used in cubicles, and TERM consequence rated C6 and C5 equipment

rooms unless one or both of the following apply:

i. thermal modelling demonstrates that the internal yearly average temperatures in Table 3 is

exceeded

ii. it is demonstrated that the life cycle cost as per T MU AM 01001 ST Life Cycle Costing of

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

than a passive design over the design life as defined in Section 6.1

Table 3 Mapping of equipment cubicles and rooms to yearly average temperatures within EN 50125-3

Cubicle or room type

Cubicle Shelter (N.T.C.)

Shelter (T.C.)

Building (N.C.C.)

Building (C.C.)

Cubicle 40 °C

C6 room 30 °C 25 °C

C5 room 30 °C 25 °C 25 °C 25 °C

C4 room 25 °C 25 °C

Air conditioning shall not be installed in cubicles, shelter N.T.C. or building N.C.C.


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Where forced-air ventilation or air conditioning is used, HVAC shall be designed with

redundancy such that if the primary system fails the secondary system can maintain the

temperature and humidity limits as defined in Section 9.2.

One of the following measures is required to mitigate the risk of dust ingress:

• the air intake to the room shall be filtered such that operational equipment may be installed

without requiring a specific degree of protection against solid foreign objects

• operational equipment installed in the room shall have a minimum IP code of IP5X

A sign shall be provided indicating the IP code constraints that apply to operational equipment.

Heating shall not be required to achieve the temperature limits as defined in Section 9.2.

9.4. Power Section 9.4.1 through to Section 9.4.4 specifies the power requirements for equipment rooms

and cubicles.

Unless indicated otherwise, socket-outlets shall comply with AS/NZS 3112 Approval and test

specification - Plugs and socket-outlets.

Power shall be supplied within tolerances of the operational equipment.

Power shall be supplied to the operational equipment and HVAC for the stand-by period

regardless of state or performance of all power sources.

9.4.1. Power source The following parameters shall be included in dimensioning the power source:

• power consumed when fully equipped as per Section 13

• rated power of ancillary circuits

• power consumed by lights

• peak power consumed by the HVAC to maintain the internal yearly average temperatures

in Table 3

• power consumption of energy storage system when charging

• minimum power conversion energy efficiency of 0.90


Equipment rooms and cubicles shall be fitted with sensors compliant to T HR TE 81002 ST

Telecommunication Equipment – Network Management to monitor remaining storage capacity

and internal ambient temperature.


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9.4.2. Stand-by power source

If an equipment room contains a public address system, a stand-by power source shall be

installed and comply with the power supply requirements defined in T MU TE 61003 ST Public

Address Systems.

A stand-by power source shall be installed in TERM consequence rated C5 and C4 equipment

rooms that are capable of supplying the full load of the operational equipment and HVAC for a

minimum stand-by period of four hours.

The life cycle cost of stand-by power sources shall be evaluated as per T MU AM 01001 ST

over the design life defined in Section 6.1 of this standard.

The life cycle costing shall evaluate the following options as a minimum:

• additional independent ac supply from an alternate electricity authority

• stationary battery or supercapacitor system

• uninterruptible power supply (UPS) system

• permanently connected generating set (diesel, natural gas, fuel cells, and so forth)

Where batteries are used as a stand-by power source, the following parameters shall be used

to dimension the batteries:

• temperature correction for internal yearly average temperatures as provided in Table 3

• aging factor of 25%


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

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

Where a stand-by power source is provided, an appliance inlet shall be provided for connection

to a transportable generating set such as follows:

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

IK code of IK06

• additionally labelled with the unique code for the equipment room or cubicle and the

minimum transportable generating set specification

The electrical installation to generating sets shall comply with AS/NZS 3010 Electrical

installations – Generating sets.


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9.4.3. Operational equipment

A separate supply circuit for operational equipment shall be provided.

For equipment rooms, a 15 A socket-outlet with minimum IP code of IP44 coloured orange with

threaded retaining device shall be installed above each reserved space for racks and free

standing equipment.

Where dc supply is required for operational equipment, a 32 A two pole, extra low-voltage dc

socket-outlet compliant to IEC 60309-1 Plugs, socket-outlets and couplers for industrial

purposes - Part 1: General requirements with minimum IP code of IP44 shall be installed above

each reserved space for racks and freestanding equipment, and within cubicles.

9.4.4. Ancillary equipment A separate supply circuit for ancillary equipment shall be provided.

For equipment rooms, a double 10 A socket-outlet coloured white shall be installed for ancillary

equipment above each pair of rack spaces and above the freestanding equipment spaces.

For equipment rooms, a double 10 A socket-outlet coloured white shall be installed for ancillary

equipment on each internal wall.

For cubicles, a double 10 A ac socket-outlet coloured white shall be installed for ancillary

equipment.

Note that ancillary equipment should not be connected to the telecommunications

supply circuit.

9.5. Earthing and surge suppression The earthing and surge suppression requirements for equipment rooms and cubicles shall

comply with the requirements stated in T HR TE 21002 ST.

9.6. Electrostatic discharge TERM consequence rated C5 and C4 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.

9.7. Noise control Noise control techniques shall be incorporated into the design for the expected tasks and

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

management to achieve compliance to NSW Code of Practice – Managing Noise and

Preventing Hearing Loss at Work.


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9.8. Physical security The physical security management of equipment rooms and cubicles shall comply with the

following guidelines:

• Australian Government Physical security management guidelines - Security zones and risk

mitigation controls

• Australian Government Physical security management guidelines - Physical security of ICT

equipment, systems and facilities

Note that the PSMG contain controls for the following:

• building construction

• out of hours alarm systems

• out of hours response

• access control systems

• locks

• keying systems

• interoperability of alarm system and other building management systems

• visitor control

• storage of official information

• storage of valuable physical assets

• CCTV coverage

• security lighting

• perimeter access control

• individual alarm options

• other controls to address specific risks

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

Table 4 provides requirements for physical security zones and containers.

Table 4 Physical security zones and containers

TERM consequence rating

Security zone

Security container

Additional mandatory controls

C6 Two Lockable racks • Windows and skylights are not permitted • Out of hours alarm system compliant to

AS 2201.1:2007 Class 3 © State of NSW through Transport for NSW Page 22 of 25 S

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TERM consequence rating

Security zone

Security container

Additional mandatory controls

C5 Two Lockable racks • Windows and skylights are not permitted • Out of hours alarm system compliant to

AS 2201.1:2007 Class 3

C4 Three Lockable racks • Windows and skylights are not permitted • Event-activated CCTV coverage used in

conjunction with the out of hours alarm system

• Additional geographically diverse equipment room and redundant system architecture across the two rooms

Note that the TERM consequence rating is aligned with the business impact levels, as

defined in Australian Government Physical security management guidelines –

Business impact levels:

• C6 and C5 aligns to ‘low-medium’ impacts on agency operations and national

infrastructure

• C4 aligns to ‘high’ impacts on agency operations and national infrastructure

10. Intra-building pathways Section 10.1 and Section 10.2 specifies the access floor requirements for equipment rooms and

cubicles.

10.1. Access flooring Access flooring may be used within TERM consequence rated C5 and C4 equipment rooms.

Access flooring shall be of a heavy grade and adjustable with stringers compliant with AS 4154

General access floors (elevated floors).

10.2. Cable trays and wireways A non-metallic cable tray shall be installed to provide a contiguous pathway between all

reserved spaces for racks and freestanding equipment.

11. Intra-building backbone pathways Intra-building backbone pathways interconnect equipment rooms and cubicles contained within

a single building.

Note this section is included for alignment to AS/NZS 3084:2003.

There are no additional requirements.


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12. Inter-building backbone pathways Inter-building backbone pathways interconnect equipment rooms and cubicles contained within

separate buildings.

Equipment rooms and cubicles that are entrance rooms or spaces shall be interfaced to

inter-building backbone pathways through an underground pathway. The underground pathway

consists of trenches, conduits, pits and lead-in cables.


Figure 3 Underground pathway separation requirements for C5 and C4 equipment rooms

12.1. Trenches and conduits Conduits for lead-in cables shall have an internal diameter of 100 mm.

For TERM consequence rated C6 rooms and cubicles, two conduits to the associated cable

entry pit shall be provided for lead-in cables.

For TERM consequence rated C5 and C4 rooms, the following conduits shall be provided for

lead-in cables:

• three primary conduits to the associated primary cable entry pit

• three secondary conduits to the associated secondary cable entry pit

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For TERM consequence rated C5 and C4 rooms, the following separation requirements shall be

satisfied as shown in Figure 3:

• primary and secondary conduits shall be in separate primary and secondary trenches

• minimum separation of 5 m between the primary and secondary trenches, except for a

maximum length of 10 m, where the minimum separation may be reduced to 1 m

12.2. Pits Each equipment room or cubicle shall have two associated pits for each trench in the following

manner:

• one pit for the purpose of cable splicing, known as a cable entry pit

• one adjoining pit for the purpose of 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 TERM consequence rated C5 and C4 rooms, a minimum separation of 20 m between the

primary and secondary cable entry pits shall be provided as shown in Figure 3.

Pits shall not be located within an earth potential rise (EPR) hazard zone.

12.3. Lead-in cable Lead-in cable shall comply with the requirements of T HR TE 01001 ST, except that copper

communications cable shall not be used.

13. Schedule Projects shall specify the following parameters within a schedule:

• TERM consequence rating for equipment rooms and cubicles from C6 ‘insignificant’ to C4

‘moderate’

• total rack units reserved for equipment

• average rated power consumption of equipment per rack unit

• facilities and building services

• whether rear access to rack-mounted equipment is required

• any requirements exceeding those specified in this standard


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Documents

T MU TE 21001 ST Equipment Rooms and CubiclesT MU TE 21001 ST Equipment Rooms and Cubicles Version 1.0 Issued date: 21 September2015 Preface The Asset Standards Authority (ASA) is