spm 1178 optical fibre termination, patching and ... · the changes to previous content in spm 1178...

TN 022: 2014

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For queries regarding this document [email protected]

www.asa.transport.nsw.gov.au

Technical Note TN 022: 2014

Issued date 17 March 2014 Effective dates 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superseded by ASA Standard T HR TE 01003 SP version 1.0.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

Signature

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

Asset Standards Authority TN-022-2014 Technical Note - SPM 1178 © State of NSW through Transport for NSW

mailto:[email protected]

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

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OPTICAL FIBRE TERMINATION, PATCHING & MANAGEMENT

EQUIPMENT

SPM 1178

Engineering Specification Telecommunications

Version 2.0

Issued July 2011

Engi

neer

ing

Spec

ifica

tion

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

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RailCorp Engineering Specification — Telecommunications Optical Fibre Termination, Patching & Management Equipment SPM 1178

© RailCorp Page 2 of 11 Issued July 2011 UNCONTROLLED WHEN PRINTED Version 2.0

Document control

Version Date Summary of change 1.0 First Issue 2.0 19/07/2011 Update of specification to reflect current RailCorp practices.

Summary of changes from previous version

Summary of change Section

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Contents

1 Introduction .............................................................................................................................4 2 Scope........................................................................................................................................4 3 Application...............................................................................................................................4 4 Reference documents.............................................................................................................4 4.1 ACMA Compliance....................................................................................................................5 5 General .....................................................................................................................................5 5.1 Health and safety ......................................................................................................................5 5.2 Documentation and training ......................................................................................................5 5.3 Sizing.........................................................................................................................................5 5.4 Cable types to be terminated ....................................................................................................6 5.5 Cable strain relief ......................................................................................................................6 5.6 Management of fibre and tubes ................................................................................................6

5.6.1 Bending radius...........................................................................................................6 5.7 Fibre splice trays .......................................................................................................................6 5.8 Flexibility and re-configuration ..................................................................................................7 5.9 Patch cord management...........................................................................................................7 5.10 Numbering system ....................................................................................................................7 5.11 Dust ingress ..............................................................................................................................7 5.12 Underground locations ..............................................................................................................7 6 Types of enclosures ...............................................................................................................8 6.1 Wall mounted termination equipment .......................................................................................8 6.2 Rack mounted termination equipment ......................................................................................8 6.3 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 Pigtails and patch leads .........................................................................................................9 7.1 Pigtails.......................................................................................................................................9 7.2 Patch leads ...............................................................................................................................9 8 Connectors ............................................................................................................................10 8.1 Connector Testing...................................................................................................................10 9 Warranty.................................................................................................................................10 Appendix A 11

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Optical Fibre Termination, Patching & Management Equipment SPM 1178


1 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:

• wall mounted splice and termination enclosures, • rack mounted splice and termination frames, • comprehensive fibre management and distribution systems, • pigtails, • patch leads and • connectors.

3 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

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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.

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ailCorp Engineering Specification — Telecommunications ptical Fibre Termination, Patching & Management Equipment SPM 1178

RailCorp Page 6 of 11 sued July 2011 UNCONTROLLED WHEN PRINTED Version 2.0

.4 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 non-zero 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:

usidmm

Fibre Ra250μm & 900μm coated fibre 25 Patch cord and 3mm pigtails 30 mm Tubes from the cable 50 mm

.7 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.

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5.8 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.

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6 Types of enclosures

6.1 Wall mounted termination equipment 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.

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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

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The outer coating of the patch leads shall be coloured as below:

Fibre Type Sheath Colour G652d Yellow 62.5/125 OM1 Orange 50/125 OM3 Aqua

8 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:

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

8.1 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.

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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


spm 1178 optical fibre termination, patching and ... · the changes to previous content in spm 1178...

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