TN 022: 2014
For queries regarding this document
standards@asa.transport.nsw.gov.au
www.asa.transport.nsw.gov.au
Technical Note
TN 022: 2014
Issued date
Effective dates
17 March 2014
17 March 2014 to 17 March 2015
Subject:
Withdrawal of SPM 1178 Optical Fibre Termination,
Patching and Management
This technical note is issued by the Asset Standards Authority to advise that RailCorp Standard
SPM 1178 Optical Fibre Termination, Patching and Management, Version 2.0 is now
superseded by ASA Standard T HR TE 01003 SP version 1.0.
The changes to previous content in SPM 1178 include the following:

replacement of RailCorp organisation roles and processes with those applicable to the
current ASA organisational context

minor amendments and clarification to content

conversion of the standard to ASA format and style
Authorisation
Technical content
prepared by
Checked and
approved by
Interdisciplinary
coordination
checked by
Authorised for
release
Name
Ian Bonner
Trevor Payne
David Spiteri
Graham Bradshaw
Position
Principal Engineer
Rail Application
Lead
Telecommunications
Engineer
Chief Engineer Rail
Principal Manager
Network Standards &
Services
Signature
TN-022-2014 Technical Note - SPM 1178
© State of NSW through Transport for NSW
Asset Standards Authority
Page 1 of 1
SPM 1178
OPTICAL FIBRE TERMINATION,
PATCHING & MANAGEMENT
EQUIPMENT
Version 2.0
Issued July 2011
Owner:
Telecommunications Network Manager, Communications & Control Systems
Approved
by:
Pat Kerrigan
Telecommunications Network
Manager
Communications & Control
Systems
Authorised
by:
Jeff Byron
Chief Engineer
Telecommunications
Disclaimer
This document was prepared for use on the RailCorp Network only.
RailCorp makes no warranties, express or implied, that compliance with the contents of this document shall be
sufficient to ensure safe systems or work or operation. It is the document user’s sole responsibility to ensure that the
copy of the document it is viewing is the current version of the document as in use by RailCorp.
RailCorp accepts no liability whatsoever in relation to the use of this document by any party, and RailCorp excludes
any liability which arises in any manner by the use of this document.
Copyright
The information in this document is protected by Copyright and no part of this document may be reproduced, altered,
stored or transmitted by any person without the prior consent of RailCorp.
UNCONTROLLED WHEN PRINTED
Page 1 of 11
Engineering Specification
Superseded by T HR TE 01003 SP
Engineering Specification
Telecommunications
Superseded by T HR TE 01003 SP
RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
SPM 1178
Document control
Version
1.0
2.0
Date
19/07/2011
Summary of change
First Issue
Update of specification to reflect current RailCorp practices.
Summary of changes from previous version
Summary of change
© RailCorp
Issued July 2011
Section
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Version 2.0
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RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
SPM 1178
Contents
1
Introduction .............................................................................................................................4
2
Scope........................................................................................................................................4
3
Application...............................................................................................................................4
4
4.1
Reference documents.............................................................................................................4
ACMA Compliance....................................................................................................................5
5
5.1
5.2
5.3
5.4
5.5
5.6
General .....................................................................................................................................5
Health and safety ......................................................................................................................5
Documentation and training ......................................................................................................5
Sizing.........................................................................................................................................5
Cable types to be terminated ....................................................................................................6
Cable strain relief ......................................................................................................................6
Management of fibre and tubes ................................................................................................6
5.6.1
Bending radius...........................................................................................................6
Fibre splice trays .......................................................................................................................6
Flexibility and re-configuration ..................................................................................................7
Patch cord management ...........................................................................................................7
Numbering system ....................................................................................................................7
Dust ingress ..............................................................................................................................7
Underground locations ..............................................................................................................7
5.7
5.8
5.9
5.10
5.11
5.12
6
6.1
6.2
6.3
Types of enclosures ...............................................................................................................8
Wall mounted termination equipment .......................................................................................8
Rack mounted termination equipment ......................................................................................8
Comprehensive fibre management and distribution systems ...................................................8
6.3.1
Splice Box..................................................................................................................8
6.3.2
Shallow fibre termination frames and cabinet............................................................8
6.3.3
Pre-terminated fibre tails............................................................................................9
7
7.1
7.2
Pigtails and patch leads .........................................................................................................9
Pigtails.......................................................................................................................................9
Patch leads ...............................................................................................................................9
8
8.1
Connectors ............................................................................................................................10
Connector Testing...................................................................................................................10
9
Warranty.................................................................................................................................10
Appendix A
© RailCorp
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RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
1
SPM 1178
Introduction
To provide rail services to the greater metropolitan area of Sydney and beyond, RailCorp
relies on an extensive single mode fibre optic network. This network carries MPLS, SDH,
ATM and legacy PDH systems operating at both 1550nm and 1310nm, Coarse Wave
Division Multiplexing Systems (CWDM) operating at wave lengths up to 1620nm and
Dense Wave Division Multiplexing Systems (DWDM) operating between 1522nm to
1560nm (C band) and 1570nm to 1603nm (L band) at speeds up to 10Gb/s per
wavelength with planed speeds up to 40Gb/s per wavelength.
RailCorp requires a neat, tidy well-organised system for the management of optic fibre
cable terminations that is space efficient, robust and reliable.
Reliability of the RailCorp optic fibre network is paramount as more and more
operationally critical systems use this network.
2
Scope
This specification covers optical fibre termination patching and management equipment
for use with in the RailCorp network including:
•
•
•
•
•
•
3
wall mounted splice and termination enclosures,
rack mounted splice and termination frames,
comprehensive fibre management and distribution systems,
pigtails,
patch leads and
connectors.
Application
This specification is to be used for the purposes of type approval, procurement, design
and construction and is applicable to all optic fibre termination patching and management
equipment within the RailCorp communications network. This including equipment
supplied by external contractors.
4
Reference documents
AS/CA S008 Requirements for Customer Cabling Products
AS/ACIF S009 Installation Requirements for Customer Cabling (Wiring Rules)
AS/NZS 2211.1Safety of laser products - Equipment classification, requirements and
user’s guide
AS/NZS 2211.2 Laser Safety - Safety of optical fibre communication systems
AS/NZS 3080 Telecommunications installations - Generic cabling for commercial
premises
AS 60529 Degrees of protection provided by enclosures (IP Code)
HB 243 Communications Cabling Manual - Module 1: Australian regulatory arrangements
HB 29 Communications cabling manual - Module 2: Communications cabling handbook
ITU-T Rec. G652 Characteristics of Single-mode Optic Fibre Cable
ITU-T Rec. G655 Characteristics of Non-zero Dispersion Shifted Single-mode Optic Fibre
Cable
ITU-T Rec. G657 Characteristics of a Bending Loss Insensitive Single-mode Optical Fibre
and Cable for the Access Network
© RailCorp
Issued July 2011
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Version 2.0
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RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
SPM 1178
Telcordia GR-326 Generic Requirements for Single-Mode and Multi-Mode Optical
Connectors and Jumper Assemblies
ESM 102Communications Outdoor Cabling Standard
SPM 0126 Pre-terminated Fibre Tails & Link Cables
SPM 0677 Single-Mode Optical Fibre Cable
TMM S087 Fibre Termination Enclosure Requirements
4.1
ACMA Compliance
The supplier shall ensure that all equipment offered and techniques recommended
comply with the Australian Communications and Media Authority (ACMA) regulations in
regard to the Telecommunications Act 1997 and its amendments.
ACMA requires Australian manufacturers, importers or their agents (suppliers) of
customer equipment and cabling product to establish a compliance with standards such
as AS/CA S008 and that the products are labelled.
5
General
Optic fibre termination systems shall be structured, well-organised and space efficient.
5.1
Health and safety
The equipment offered shall have no exposed sharp edges, burrs or protrusions that can
cause injury to staff or damage to fibre or cable. The equipment offered shall be non-toxic
and dermatologically safe. All materials and equipment construction shall comply with
applicable occupational health and safety environmental laws and regulations.
5.2
Documentation and training
Documentation shall be provided for each style of termination equipment offered. This
documentation shall provide clear instructions for the installation and use of the
equipment, fully describing details such as:
• cable strip lengths,
• amount and arrangement of cable slack required behind the enclosure to enable
free movement of a rack mounted enclosure,
• entry and attachment of cable within the closure and anchoring of strength
member(s),
• pathway, support and protection of tubes and fibres within the closure,
• anchoring of tubes and pig tales to the splice trays,
• use of splice trays offered,
• numbering scheme.
If RailCorp considers training in the use of the offered equipment is appropriate, then a
training course shall be available upon request.
5.3
Sizing
Termination closures are required ranging in size from a closure capable of terminating a
single 12 fibre cable terminating in a wall mounted closure up to a large rack mounted
arrangement capable of terminating over 900 fibre cores with space for expansion.
© RailCorp
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ailCorp Engineering Specification — Telecommunications
ptical Fibre Termination, Patching & Management Equipment
.4
SPM 1178
Cable types to be terminated
RailCorp predominantly uses singlemode optical fibre cable but some multimode fibre is
used in LAN networks.
External cables (single mode) are loose tube type construction, with a glass reinforced,
central strength member, jelly filled, polyethylene sheathed and nylon jacketed with
optional sacrificial sheath. There shall be either 6 or 12 fibres per tube. The cable is more
fully described by SPM 0677. The cable diameter ranges between 8mm and 27mm. The
cable contains G652 single mode fibres and some cables may contain some G655 nonzero dispersion shifted fibre (NZDS).
Internal cables (singlemode and multimode) are generally tight buffered riser cable
ranging in size from 12 to 144 fibre cores with aramid strength member under a low
smoke zero halogen (LSZH) sheath.
The termination equipment shall be compatible with these cables. RailCorp reserves the
right to use other cable types.
.5
Cable strain relief
Cable(s) shall be firmly anchored within the cabinet or rack transferring any strain to the
strength member(s) of the cable. A cable gland shall be used to provide protection
against the ingress of dust and insects and to restrict movement of the cable sheath
within the enclosure.
.6
Management of fibre and tubes
The design of the enclosure shall ensure that tubes and fibres are contained and
protected, eliminating any possibility of accidentally pinching, catching, kinking or
damaging the fibre or tubes in anyway.
.6.1
Bending radius
The termination system shall cater for the minimum bending radii of fibres and tubes
(extending from the cable), patch cords and pigtails. The minimum bending radii are as
follows:
Fibre
250μm & 900μm coated fibre
Patch cord and 3mm pigtails
Tubes from the cable
.7
Radius
25 mm
30 mm
50 mm
Fibre splice trays
Fibres are to be fusion spliced. The splice is then protected with a heat shrink splice
protector and stored within an organiser or splicing tray within the closure. The offered
closure shall store up to 1 metre of excess fibre (250 μm coated), for each fibre within an
organiser. Tubes and pigtails shall be firmly anchored to the organiser. As fibre tubes
have either 6 or 12 fibres, trays shall house 12 fibres or multiples of 12 fibres.
The supplier shall provide full details of the trays offered with their equipment.
RailCorp
sued July 2011
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RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
5.8
SPM 1178
Flexibility and re-configuration
The termination system shall have the flexibility to enable any selection of fibres in a
cable to be terminated and others to be jointed through to other cables as required.
Jointing requirements will be different in various locations. For example, a site may
require two 48 fibre cables entering a wall mounted closure, the first 12 fibres of each
cable to be terminated and the remaining 36 fibres to be jointed through.
The termination system shall have the ability to re-configure fibre joints within the jointing
trays without interruption or damage to other splices, fibres in the same tray or fibres in
other nearby trays. This re-configuration includes changing joints between two fibre
cables to joints between fibre cables and pigtails and vice versa. Such re-configuration
will be required from time to time.
5.9
Patch cord management
The termination system shall have a fibre patch cord management system such that
patch cords are neatly arranged and located within dedicated areas or paths. The patch
cord management system shall help prevent patch cords from being trapped in the doors,
prevent excessive bending, kinking or any other damage to patch cords. Sufficient space
is required for storage of excess patch cord lengths while still allowing ready access to
individual patch cords.
The patch cord management system shall prevent excessive load being placed on the
connector or the patch cord itself, by the weight of the patch lead.
5.10
Numbering system
The termination system shall enable fibres to be easily identified by a numbering system.
The numbering of terminations shall be clearly visible and shall be provided on a plate
holding the through connectors.
5.11
Dust ingress
Dust poses problems for fibre connectors especially in the rail environment. Therefore, a
design for a termination system that reduces or effectively eliminates the ingress of dust
into the fibre connectors is highly desirable.
5.12
Underground locations
Underground rail locations pose serious dust problems, therefore termination systems in
these locations shall be housed within dust proof enclosures rated to IP64 or better.
Cable entries shall be sealed with a gland and patch cord and link cables entries shall be
organised so that they effectively eliminate the ingress of dust.
Equipment installed in confined space locations, such as underground railway stations
and tunnels shall be made of low smoke halogen free, fire retardant materials. Where
closures are wall mounted within an underground station or tunnel and exposed to
moisture, they shall be made from 316 grade stainless steel.
© RailCorp
Issued July 2011
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Version 2.0
Superseded by T HR TE 01003 SP
RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
6
Types of enclosures
6.1
Wall mounted termination equipment
SPM 1178
Wall mounted termination equipment will be used at locations and equipment rooms
where cables are generally smaller in size. The equipment shall be required to terminate
typically 24, 48, 96 or 144 fibres. The wall mounted termination cabinets shall be lockable
and the locks shall be capable of being keyed alike.
6.2
Rack mounted termination equipment
19 inch rack mounted termination equipment will be generally used in medium or large
communications locations. Cable sizes shall range from 12 to in excess of 700 fibres in
larger sites. The termination system must be readily expandable. Where it is installed
outside of a RailCorp equipment room rack mounted equipment shall be protected by a
lockable door and the locks shall be capable of being keyed alike.
Fibre ports shall be angled so as to reduce the space required in front of the rack and
reduce the bending radius of fibre patches, ports to the right of centre shall be angled to
the right, ports to the left of centre shall be angled to the left.
6.3
Comprehensive fibre management and distribution systems
RailCorp requires a fibre termination system where the incoming external cables are
spliced to pre-terminated tails in a dedicated enclosure where these tails are run to a
separately housed shallow termination frame located in a cabinet. Quite often the “Splice
Box” and the “Termination closure” are located side by side but in some incidents the
boxes will be back to back or a considerable distance apart. See Appendix A for an
example of a side by side rack installation.
6.3.1
Splice Box
The “Splice Box” is where the incoming external cables are spliced to the pre-terminated
tails. RailCorp require splice boxes in a range of sizes handling from 360 splices to over
1200 splices.
Generally the splice box shall be a rugged, powered coated steel box, IP64 rated. Splice
tray shall be mounted in stacks on a series of horizontal selves. A series of loops shall be
arranged with in the box to support fibre tube and the pre-terminated tails.
The cable will enter the box through a gland which shall firmly anchor the cable. The
exposed tubes exit the cable and are looper around the box to where they will enter a
splice tray. The pre-terminated tails are run in parallel with the associated tubes to the
splice tray where they are spliced to the fibres from the tubes. This enables the trays to
be reconfigured if required.
Provision shall be made for the unused cable entries into the box to be blanked off and
sealed to maintain the IP65 rating.
6.3.2
Shallow fibre termination frames and cabinet
As the termination frames used in this arrangement are not required to contain splices or
splice trays, they can be quite shallow and can be mounted in shallow racks or cabinets.
Types of cabinet used with these termination frames are full size 19” 600x600mm or
900x600mm, Siemens 84 style racks with rear mounting 19” rails or a wall mounted
sealed box arrangement 800mm wide and as shallow as 300mm.
© RailCorp
Issued July 2011
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Version 2.0
Superseded by T HR TE 01003 SP
RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
SPM 1178
Where a sealed box arrangement is used, the box shall be a rugged, powered coated
steel box, IP64 rated. Where this box is to be wall mounted within an underground station
and exposed to moisture, this box shall be made from 316 grade stainless steel.
Fibre ports within these shallow fibre termination frames shall be angled so as to reduce
the space required in front of the rack and reduce the bending radius of fibre patches;
ports to the right of centre shall be angled to the right, ports to the left of centre shall be
angled to the left. Mounting brackets shall be able to be attached to the front of the
termination frame or rear as required.
The supplier shall provide details on entry and anchoring of the pre-terminated tails, the
pathway and protection of the coated fibre within the frame and the management of patch
leads and the storage patch lead slack.
6.3.3
Pre-terminated fibre tails
The pre-terminated fibre tails used in this arrangement shall be manufactured in
accordance with SPM 0126.
7
Pigtails and patch leads
RailCorp use some multimode fibre in areas such as local area networks however,
RailCorp predominantly uses singlemode fibre and unless otherwise requested, pigtails
and patch cords offered shall be single mode and shall be compatible with G652d. The
supplier shall provide full details of the fibre used in the manufacture of the patch leads at
the time of offer.
Connectors used on pigtails and patch leads shall be compliant with section 8 of this
specification.
7.1
Pigtails
Pigtails shall have an outer diameter of 900μm they shall be supplied in packs of 12
which shall be individually coloured: Blue, Orange, Green, Brown, Grey, White, Red,
Black, Yellow, Violet, Pink and Turquoise for ease of management within the fibre
termination enclosure. The length of each pigtail shall not be less than 2000mm. Unless
otherwise requested singlemode optical fibre pigtails shall be shall be terminated at one
end using simplex SC/UPC connectors.
The packaging of the fibre pigtails shall ensure that they do not get tangled or damaged
while in storage or during transport.
Each packet of pigtails shall be labelled with the supplier company identifier and/or logo,
the part number, fibre type and connector type.
7.2
Patch leads
Patch leads shall 900μm buffered fibre surrounded by aramid yarn strength members and
a 3mm flame-retardant jacket. RailCorp uses duplex patch leads with simplex connecters
and unless otherwise requested this is what shall be offered and what shall be supplied.
The length of the patch lead shall be measured from the connector endface to connector
endface and may be up to 50mm longer but shall not shorter than the length specified in
the order. (Length +50mm, -0mm)
Each patch lead shall be marked with the part number and the supplier company
identifier and/or logo
© RailCorp
Issued July 2011
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Version 2.0
Superseded by T HR TE 01003 SP
RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
SPM 1178
The outer coating of the patch leads shall be coloured as below:
Fibre Type
G652d
62.5/125 OM1
50/125 OM3
8
Sheath Colour
Yellow
Orange
Aqua
Connectors
RailCorp predominantly uses simplex SC connectors (both UPC and APC). However
other connector types such as duplex SC, LC, FC and ST will be required from time to
time.
Connectors shall be compliant with Telcordia GR-326 and shall comply the following:
• The connector ferrule and alignment sleeves shall be all zirconia ceramic
construction.
• Ferrule endface radius of curvature shall be between 10 to 25mm.
• Ferrule endface apex offset shall be less than 50μm.
• Fibre undercut shall be between than 0nm and 50nm.
• Fibre core jacket must be firmly anchored to the connector.
• Insertion loss for each connector shall not be greater than 0.25dB when tested at
both 1310nm and 1550nm.
• The return loss for each connector shall be greater than 50dB for Ultra Physical
Contact (UPC) connectors and greater than 65dB angled connectors (APC).
• Where APC connectors are required, they shall have conical ferrules only, stepped
ferrules not permitted.
• A dust cap shall be installed on each connector. Dust caps shall not touch the
connector end surface or contaminate the connector in any way.
Connectors and through adapters shall be colour coded as follows:
8.1
Fibre / Connector Type
Connector
Through Adapter
Singlemode / UPC
Blue
Blue
Singlemode / APC
Green
Green
Multimode 62.5/125 OM1 / PC
Beige
Beige
Multimode 50/125 OM3 / PC
Aqua if available
otherwise Beige
Aqua
Connector Testing
Each connector of each pigtail and patch cord shall be tested to ensure that the
connector is within the required parameters for insertion and return loss at both 1310nm
and 1550nm and shall be visually inspected with a fibre microscope to insure that the
connector is free form cracks, scratches and contaminants.
9
Warranty
The supplier shall provide a warranty that will cover all defects in material and
workmanship for period of not less than five years from the date of supply. This warranty
as a minimum shall cover the replacement of any defective components without charge
and without charge for delivery.
© RailCorp
Issued July 2011
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Version 2.0
Superseded by T HR TE 01003 SP
RailCorp Engineering Specification — Telecommunications
Optical Fibre Termination, Patching & Management Equipment
SPM 1178
Appendix A
Figure 1 - Fibre Management and Distribution System utilising Rittall 19” RU37 Racks
Splicing rack on left and the Fibre Termination Rack on right
In all 588 fibres from 13 cables are shown terminated here
© RailCorp
Issued July 2011
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