IEC-62425-2007.pdf
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1、 IEC 62425 Edition 1.0 2007-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Communication, signalling and processing systems Safety related electronic systems for signalling Applications ferroviaires Systmes de signalisation, de tlcommunications et de traitement Systmes lectroniq
2、ues de scurit pour la signalisation IEC 62425:2007 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, includi
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16、ation ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62425 Edition 1.0 2007-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Communication, signalling and processing systems Safet
17、y related electronic systems for signalling Applications ferroviaires Systmes de signalisation, de tlcommunications et de traitement Systmes lectroniques de scurit pour la signalisation INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XD ICS 45.060 PRICE CODE CODE
18、 PRIX ISBN 2-8318-9310-0 2 62425 IEC:2007 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references9 3 Terms, definitions and abbreviations.10 3.1 Definitions .10 3.2 Abbreviations.15 4 Overall framework of this standard16 5 Conditions for safety acceptance and approval17 5.1 The safety ca
19、se .17 5.2 Evidence of quality management19 5.3 Evidence of safety management 21 5.3.1 Introduction .21 5.3.2 Safety life-cycle .22 5.3.3 Safety organisation 23 5.3.4 Safety plan 24 5.3.5 Hazard log.25 5.3.6 Safety requirements specification.25 5.3.7 System/sub-system/equipment design25 5.3.8 Safety
20、 reviews .25 5.3.9 Safety verification and validation 25 5.3.10 Safety justification26 5.3.11 System/sub-system/equipment handover26 5.3.12 Operation and maintenance .26 5.3.13 Decommissioning and disposal 26 5.4 Evidence of functional and technical safety 26 5.5 Safety acceptance and approval 29 5.
21、5.1 Introduction .29 5.5.2 Safety approval process.30 5.5.3 After safety approval32 5.5.4 Dependency between safety approvals.32 Annex A (normative) Safety integrity levels.33 Annex B (normative) Detailed technical requirements .47 Annex C (normative) Identification of hardware component failure mod
22、es .62 Annex D (informative) Supplementary technical information79 Annex E (informative) Techniques and measures for safety-related electronic systems for signalling for the avoidance of systematic faults and the control of random and systematic faults .86 Bibliography95 Figure 1 Scope of the main I
23、EC railway application standards.9 Figure 2 Structure of IEC 62425 .17 62425 IEC:2007 3 Figure 3 Structure of safety case19 Figure 4 Example of system life-cycle (from IEC 62278) .21 Figure 5 Example of design and validation portion of system life-cycle 23 Figure 6 Arrangements for independence .24
24、Figure 7 Structure of technical safety report29 Figure 8 Typical safety acceptance and approval process.31 Figure 9 Examples of dependencies between safety cases/safety approval.32 Figure A.1 Safety requirements and safety integrity 34 Figure A.2 Global process overview36 Figure A.3 Example risk ana
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