Infrastructure Based Train Detection Interface Requirements

Transcription

1 Uncontrolled When Printed Railway Group Standard Infrastructure Based Train Detection Interface Synopsis This document specifies the interface requirements for infrastructure based train detection systems that are used to locate the position of rail vehicles on the infrastructure. Copyright in the Railway Group Standards is owned by Rail Safety and Standards Board Limited. All rights are hereby reserved. No Railway Group Standard (in whole or in part) may be reproduced, stored in a retrieval system, or transmitted, in any form or means, without the prior written permission of Rail Safety and Standards Board Limited, or as expressly permitted by law. members are granted copyright licence in accordance with the Constitution Agreement relating to Rail Safety and Standards Board Limited. In circumstances where Rail Safety and Standards Board Limited has granted a particular person or organisation permission to copy extracts from Railway Group Standards, Rail Safety and Standards Board Limited accepts no responsibility for, nor any liability in connection with, the use of such extracts, or any claims arising therefrom. This disclaimer applies to all forms of media in which extracts from Railway Group Standards may be reproduced. Published by: Block 2 Angel Square 1 Torrens Street London EC1V 1NY Copyright 2014 Rail Safety and Standards Board Limited

2 Railway Group Standard Uncontrolled When Printed record Date Comments One April 2010 Original document December 2014 This document has been amended under project 12/034 to support industry in design of clearance points to be compliant with the CCS TSI and the harmonised parameters specified in ERA/ERTMS/ Interfaces Between Control- Command and Signalling Trackside and Other Subsystems. Amended or additional parts and/or sections of revised pages have been marked by a vertical black line in the adjacent margin. Superseded documents The following Railway Group Standard is superseded, either in whole or in part as indicated: Superseded documents Sections superseded Date when sections are superseded issue one Infrastructure Based Train All 07 March 2015 Supply issue one, ceases to be in force and is withdrawn as of 07 March The authoritative version of this document is available at Uncontrolled copies of this document can be obtained from Communications,, Block 2, Angel Square, 1 Torrens Street, London EC1V 1NY, telephone or enquirydesk@rssb.co.uk. Other Standards and associated documents can also be viewed at Page 2 of 10

3 Uncontrolled When Printed Railway Group Standard Contents Section Description Page Part 1 Purpose and Introduction Purpose Introduction Approval and authorisation of this document 5 Part 2 for Train s Compatibility between train detection systems and vehicles Specific requirements of axle counter systems, treadles and similar systems to ensure compatibility with vehicles Track section critical dimensions Track section dimensions for axle counter based train detection Track section dimensions for track circuit based train detection 7 Part 3 Application of this Document Scope Exclusions from scope General compliance date Exceptions to general compliance date Health and safety responsibilities 8 Definitions 9 References 10 Page 3 of 10

4 Railway Group Standard Uncontrolled When Printed Part 1 Purpose and Introduction 1.1 Purpose This document sets out the interface requirements between rail vehicles and infrastructure based train detection systems, including the track section parameters needed for their compatibility. 1.2 Introduction Application of train detection systems Train detection systems are provided where: a) The safe operation of the signalling system is dependent on accurate and up-to-date information on the position and movements of trains. Or b) Information on the position and movements of trains is required for the control of level crossings, staff warning systems or other systems associated with the safety of train operations. Or c) It is necessary for the signaller or other operator to know the position of trains for the safe operation of the railway Related requirements in other documents The following standards contain requirements that are relevant to the scope of this document: 2012/88/EU GC/RT5212 GE/RT8217 GE/RT8270 GM/RT2149 GM/RT2466 The technical specification for interoperability relating to the control-command and signalling subsystems of the trans- European rail system (CCS TSI). The related requirements are within the specification (ERA/ERTMS/033281) referenced as Index 77 in Table A2 of Appendix A in the CCS TSI. for Defining and Maintaining Clearances [currently being reviewed] Introduction and Use of Axle Counters Managing the Risk Assessment of Compatibility of Rolling Stock and Infrastructure for Defining and Maintaining the Size of Railway Vehicles [currently being reviewed] Railway Wheelsets Supporting documents The following Rail Industry Guidance supports this Railway Group Standard: GK/GN0628 Guidance on. Page 4 of 10

5 Uncontrolled When Printed Railway Group Standard 1.3 Approval and authorisation of this document The content of this document was approved by Control Command and Signalling (CCS) Standards Committee on 16 October This document was authorised by on 03 November Page 5 of 10

6 Railway Group Standard Uncontrolled When Printed Part 2 for Train s 2.1 Compatibility between train detection systems and vehicles When new or modified infrastructure or vehicles are introduced, the compatibility of the train detection arrangements and vehicles shall be assessed to ensure the safety integrity of the application When any significant change in the volume, speed or type of rail traffic is proposed that could affect the safe operation of train detection systems, the compatibility of the train detection arrangements and vehicles shall be assessed to ensure that the safety integrity of the application is maintained The compatibility assessment shall: a) Assess whether train detection systems have been selected so as to ensure that they will correctly detect vehicles that operate over them, with the types of movements that will take place. And b) Assess whether vehicles are capable of reliably actuating the train detection systems on the route. 2.2 Specific requirements of axle counter systems, treadles and similar systems to ensure compatibility with vehicles Axle counters, treadles and similar systems shall be selected to be compatible with: a) Wheel construction. b) Wheel diameter. c) Flange depth and profile. d) Axle spacing. e) Speed of trains passing counting or detecting heads. f) Any other objects on the train which could cause miscount, for example, track brakes. 2.3 Track section critical dimensions Track section clearance point The distance of the track section clearance point shall not be less than 1600 mm plus the harmonised length of vehicle overhang from the fouling point, as set out in clauses and of ERA/ERTMS/ Minimum length of track section The minimum length of a track section shall be greater than the harmonised maximum spacing between adjacent axles of vehicles, as set out in section of ERA/ERTMS/033281, unless alternative safeguards are provided to prevent the track section showing clear when a vehicle is standing over it Maximum length of gaps in continuous train detection Where continuous train detection is required, any gap in the provision of effective detection of vehicle axles shall not exceed 2.6 m. Page 6 of 10

7 Uncontrolled When Printed Railway Group Standard 2.4 Track section dimensions for axle counter based train detection The distance that an axle counter track section can extend beyond the clearance point on each of the diverging or converging routes of a turnout shall not exceed 10 m, where practicable This restriction shall not apply: a) Where the diverging or converging routes run parallel. b) Where all diverging or converging routes are shunt class only. c) Where interlocking controls are provided which prevent the diverging or converging route being restored to normal operation until examination of the diverging or converging route is carried out. 2.5 Track section dimensions for track circuit based train detection Physical stagger between insulated rail joints (IRJs) Where a physical stagger between a pair of insulated rail joints (IRJs) is unavoidable, the maximum stagger shall not exceed 2.6 m Maximum stagger of joints on electrified lines Where the insulated rails overlap at a track circuit termination or transposition in electric traction areas, the stagger shall be limited to a distance not exceeding the wheelbase of motor bogies of any electric train operating over the route The minimum distance between pairs of IRJs In order to avoid loss of detection of a long wheelbase non-bogied vehicle, the distance between the nearest joint of a staggered pair of IRJs and the next nearest IRJ shall not be less than 11 m, where the stagger is less than 1.6 m In order to avoid loss of detection of a bogied vehicle, the distance between the nearest joints of two staggered pairs of IRJs, where the stagger of both pairs exceeds 1.6 m, shall not be less than the harmonised maximum axle spacing between adjacent axles of vehicles, as set out in section of ERA/ERTMS/ The minimum distance between a pair of IRJs and the boundary of a track section In order to prevent false clearance of a track section when a long wheelbase nonbogied vehicle is passing into or out of the section, a track circuit transposition joint shall not be positioned within 11 m of an IRJ which defines the boundary of a track section, unless occupation of the adjacent track section will maintain any required locking In order to prevent false clearance of the track section when a bogied vehicle is passing into or out of the section, where the stagger of a transposition pair of IRJs exceeds 1.6 m, the distance between the nearest IRJ of the staggered pair and the IRJ which defines the boundary of the track section shall be greater than the harmonised maximum spacing between adjacent axles of vehicles, as set out in section of ERA/ERTMS/033281, unless occupation of the adjacent track section will maintain any required locking. Page 7 of 10

8 Railway Group Standard Uncontrolled When Printed Part 3 Application of this Document 3.1 Scope The requirements of this document apply to infrastructure based train detection systems The requirements of this document apply when the parameters for track section dimensions for infrastructure based train detection systems are affected Where the modification or upgrade of the infrastructure is not related to infrastructure based train detection systems and the nature of the modification or upgrade provides a reasonable opportunity to bring the infrastructure into conformity, then the requirements of this document applicable to the alteration apply Action to bring existing infrastructure based train detection into compliance with the requirements of this document is not required The requirements of this document apply when: a) An infrastructure based train detection system is modified. b) An infrastructure based train detection system is renewed as a whole All the requirements in this document apply to infrastructure managers in section 2.1 apply to both infrastructure managers and railway undertakings. 3.2 Exclusions from scope Systems of train detection based on transmission of information from the train to a remote location (for example, as used in the European Rail Traffic Management System (ERTMS) Level 3) The application of train detection solely for train describers. 3.3 General compliance date This Railway Group Standard comes into force and is to be complied with from 07 March After the compliance date, or the date by which compliance is achieved, if earlier, compliance with the requirements set out in this Railway Group Standard is to be maintained. Where it is considered not reasonably practicable to comply with the requirements, permission to comply with a specified alternative should be sought in accordance with the Railway Group Standards Code. 3.4 Exceptions to general compliance date There are no exceptions to the general compliance date specified in Health and safety responsibilities Users of documents published by are reminded of the need to consider their own responsibilities to ensure health and safety at work and their own duties under health and safety legislation. does not warrant that compliance with all or any documents published by is sufficient in itself to ensure safe systems of work or operation or to satisfy such responsibilities or duties. Page 8 of 10

9 Uncontrolled When Printed Railway Group Standard Definitions Axle counter system A method of train detection in which track-mounted equipment counts the number of axles entering and leaving a track section at each extremity. This information is evaluated to determine whether the track section is occupied or clear. Clearance point The minimum distance from points and crossings at which track section boundaries must be positioned, to prove that a vehicle on one track is in a position clear of a movement on the other. Fouling point The position on a converging, diverging or crossing line beyond which the encroachment of any part of a vehicle would infringe the required passing clearance for a vehicle on the other line. for passing clearances are set out in GC/RT5212. Insulated rail The rail of a single rail track circuit that is fitted with lrjs to separate adjacent track circuits. Insulated rail joints (IRJ) Insulated rail joints (IRJs) are required to join rails together mechanically but not electrically. Single rail (SR) A track circuit arrangement where only one rail (the signal rail) is used with IRJs to separate the track circuits. The other rail (the common rail) is electrically continuous and is used for traction return purposes. Track circuit For the purposes of this document the term track circuit refers to the detection of trains, within a particular section of track, by means of the electrical circuit created between the running rails by one or more train axles. Track section A portion of railway track having fixed boundaries and for which the train detection system provides information on its state of occupancy. Train detection system Equipment and systems forming part of, or providing input to, the signalling systems to detect, either: a) The presence or absence of vehicles within the limits of a track section. Or b) That a train has reached, is passing, or has passed a specific position. Transposition bond A jumper cable provided where track circuit polarities and / or traction return rails change sides across a pair of IRJs, or transposition joints. Transposition joints An insulated rail joint (IRJ), where transposition bonds are used to transpose the traction and / or track circuit rails. Page 9 of 10

10 Railway Group Standard Uncontrolled When Printed References The Catalogue of Railway Group Standards gives the current issue number and status of documents published by. This information is also available from RGSC 01 RGSC 02 Railway Group Standards Code Standards Manual Documents referenced in the text Railway Group Standards GC/RT5212 GE/RT8217 GE/RT8270 GM/RT2149 GM/RT2466 documents GK/GN0628 Other references 2012/88/EU ERA/ERTMS/ for Defining and Maintaining Clearances [currently being reviewed] Introduction and Use of Axle Counters Managing the Risk Assessment of Compatibility of Rolling Stock and Infrastructure for Defining and Maintaining the Size of Railway Vehicles Railway Wheelsets Guidance on The technical specification for interoperability relating to the control-command and signalling subsystems of the trans-european rail system (CCS TSI) Interfaces between CCS track-side and other subsystems Page 10 of 10