Verification of Electrification Systems and Interactions with Other Systems

Transcription

1 Verification of Electrification Systems and Interactions with Other Systems Synopsis This document mandates the verification process for new or significant changes to electrification systems and interactions with other systems. Signature removed from electronic version Submitted by Anne Blakeney Standards Project Manager Authorised by Brian Alston Controller, s This document is the property of Railtrack PLC. It shall not be reproduced in whole or in part without the written permission of the Controller, s, Railtrack PLC. Published by: Safety & Standards Directorate Railtrack PLC Railtrack House DP01 Euston Square London NW1 2EE Copyright 2000 Railtrack PLC

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3 Page 1 of 7 Contents Section Description Page Part A Issue Record 2 Responsibilities 2 Compliance 2 Health and Safety Responsibilities 2 Supply 2 Part B 1 Purpose 3 2 Scope 3 3 Definitions 3 4 Electrification System Verification 4 5 Verification of 4 6 Periodic Verification of the Electrification System and 5 References 7 RAILTRACK 1

4 Page 2 of 7 Issue Record Part A This document will be updated when necessary by distribution of a complete replacement. Amended or additional parts of revised pages will be marked by a vertical black line in the adjacent margin. Issue Date Comments One June 2000 Supersedes GM/TT0111 Responsibilities s are mandatory on all members of the Railway Group * and apply to all relevant activities that fall into the scope of each individual s Railway Safety Case. If any of those activities are performed by a contractor, the contractor s obligation in respect of s is determined by the terms of the contract between the respective parties. Where a contractor is a duty holder of a Railway Safety Case then s apply directly to the activities described in the Safety Case. * The Railway Group comprises Railtrack and the duty holders of the Railway Safety Cases accepted by Railtrack. Compliance The provisions in this document are to be complied with from 5 August Health and Safety Responsibilities In issuing this document, Railtrack PLC makes no warranties, express or implied, that compliance with all or any documents published by the Safety & Standards Directorate is sufficient on its own to ensure safe systems of work or operation. Each user is reminded of its own responsibilities to ensure health and safety at work and its individual duties under health and safety legislation. Supply Controlled and uncontrolled copies of this document may be obtained from the Industry Safety Liaison Dept, Safety and Standards Directorate, Railtrack PLC, Railtrack House, DP01, Euston Square, London, NW1 2EE. 2 RAILTRACK

5 Page 3 of 7 1 Purpose 2 Scope Part B The purpose of this document is to mandate the verification process in order to control the risk of injury to persons resulting from the installed electrification system, or from incompatibility between the installed electrification system and other systems. The overall scope of s is as specified in Appendix A of GA/RT6001. Specifically the contents of this document apply to all electrification systems and interactions with other systems. This document contains requirements which are applicable to the duty holders of the following categories of railway safety case: Infrastructure Controller; Train Operator. 3 Definitions Electrification System A system providing electrical energy to electric trains comprising the Electricity Supply Industry (ESI) generation, distribution and traction supply point equipment and Railtrack s electrical distribution equipment, contact system and return current system. Electric Trains Electric locomotives or electric multiple units that draw current from an electrification system. Interactions Interactions between the electrification system and: train control and communications; electric trains; track and structures; other lineside electrical systems; telecommunications providers; other neighbourhood installations; and other electric traction systems. Other Systems Railtrack infrastructure (including train control, communications, track, and structures), electric trains, telecommunications providers, other neighbourhood installations and other electric traction systems. Verification The act of checking or confirming that the integrity and performance of the installed electrification system and its interactions with other systems are in accordance with defined requirements. Typical verification activities include testing, measurement, inspection and the accurate prediction of parameters where the method of prediction has been validated through tests in similar circumstances. RAILTRACK 3

6 Page 4 of 7 4 Electrification System Verification 4.1 When a new electrification system or a significant change to an existing electrification system is to be introduced, verification of the installed electrification system shall be carried out in accordance with the process detailed in clause 4.2 to clause 4.4 inclusive. 4.2 An electrification plan shall be produced which shall define the verification activities to be carried out for normal and credible failure modes. The electrification plan shall detail the rationale for the selected verification activities, together with the criteria to be met. 4.3 For a new electrification system the electrification plan shall include, as a minimum, verification activities which demonstrate that the criteria have been met for normal and credible failure modes in respect of: the control of the electrification system; electrical sectioning; system voltages and currents; traction return circuits; accessible and touch voltages; switchgear and protection operation under load and short circuit conditions; the geometry of the contact system; safety clearances; and current collection quality, with existing known in-service collector systems on existing known in-service electric trains. For a significant change where it is considered that any of the above are not appropriate for inclusion in the electrification plan the decision and rationale shall be documented. 4.4 The results of the verification activities shall be reviewed and analysed against the criteria contained within the electrification plan. Actions shall be identified and implemented for the management of any residual risks. 5 Verification of Interactions with Other Systems 5.1 When a new electrification system or other system, or a significant change to an existing electrification system or other system, is to be introduced, verification of interactions between the electrification system and other systems shall be carried out in accordance with the process detailed in clause 5.2 to clause 5.4 inclusive. The full requirements to ensure compatibility between electric trains and electrification systems are contained in GE/RT An interactions plan shall be produced which shall define the appropriate verification activities to be carried out for normal and credible failure modes of both the electrification system and relevant other systems. The interactions plan shall detail the rationale for the selected verification activities, together with the criteria to be met, which shall be agreed by the parties responsible for the design of the other systems. 4 RAILTRACK

7 Page 5 of For a new electrification system the interactions plan shall include, as a minimum, verification activities which demonstrate that the criteria have been met for normal and credible failure modes of the electrification system and for normal and credible failure modes of the other systems in respect of: drivers visibility of lineside signals and signs; induced voltages on train control and communications systems/equipment arising from the electrification system; the characteristic induced voltage and noise signature of electric trains appearing on train control and communications systems/equipment; electromagnetic (EM) emissions from the electrification system, in relation to relevant standards for EM compatibility; stray currents; the geometry of the collector system and its contact force characteristic, with new or modified collector systems and/or new or modified electric trains; current collection quality, with new or modified collector systems and/or new or modified electric trains; and compatibility between contact system discontinuities and train stopping positions/train speeds. For a significant change where it is considered that any of the above are not appropriate for inclusion in the interactions plan the decision and rationale shall be documented. 5.4 The results of the verification activities shall be reviewed and analysed against the criteria contained within the interactions plan. Actions shall be identified and implemented for the management of any residual risks. 6 Periodic Verification of the Electrification System and Interactions with Other Systems 6.1 For an existing electrified railway, periodic verification of the electrification system and interactions with other systems shall be carried out in accordance with the process detailed in clause 6.2 to clause 6.4 inclusive. 6.2 A periodic plan shall be produced which shall define the periodic verification activities to be carried out to demonstrate the continued integrity of the electrification system and interactions. The periodic plan shall detail the rationale for the selected periodic verification activities, together with periodicities for these and the criteria to be met, which in the case of interactions shall be agreed by the parties responsible for the design of the other systems. The documented results of electrification system verification and verification of interactions with other systems shall form the basis of these criteria. 6.3 The periodic plan shall include, as a minimum, periodic verification activities which demonstrate that the criteria have been met in respect of: induced voltages on train control and communications systems/equipment; the control of the electrification system; accessible and touch voltages; traction return circuits; switchgear and protection operation; the geometry of the contact system; and current collection quality. RAILTRACK 5

8 Page 6 of The results of the periodic verification activities shall be reviewed and analysed against the criteria contained within the periodic plan. Actions shall be identified and implemented for the management of any residual risks. 6 RAILTRACK

9 Page 7 of 7 References GA/RT6001 GE/RT8023 s Change Procedures Compatibility Between Electric Trains and Electrification Systems The Catalogue of s (or s CD ROM) should be consulted for the current issue number and status of the documents that are published by the Safety & Standards Directorate. RAILTRACK 7