1、 IEC 61508-1Edition 2.0 2010-04INTERNATIONAL STANDARD NORME INTERNATIONALEFunctional safety of electrical/electronic/programmable electronic safety-related systems Part 1: General requirements Scurit fonctionnelle des systmes lectriques/lectroniques/lectroniques programmables relatifs la scurit Part
2、ie 1: Exigences gnrales IEC61508-1:2010 BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SCURIT THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form o
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16、des commentaires sur cette publication 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 61508-1Edition 2.0 2010-04INTERNATIONAL STANDARD NORME INTERNATIONALEFunctional safety of electrical/electronic/
17、programmable electronic safety-related systems Part 1: General requirements Scurit fonctionnelle des systmes lectriques/lectroniques/lectroniques programmables relatifs la scurit Partie 1: Exigences gnrales INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XBICS 13
18、.110; 25.040; 29.020 PRICE CODECODE PRIXISBN 978-2-88910-524-3BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61508-1 IEC:2010 CONTENTS FOREWORD.5 INTRODU
19、CTION.7 1 Scope.9 2 Normative references12 3 Definitions and abbreviations 12 4 Conformance to this standard .12 5 Documentation .13 5.1 Objectives .13 5.2 Requirements 13 6 Management of functional safety.14 6.1 Objectives .14 6.2 Requirements 14 7 Overall safety lifecycle requirements .17 7.1 Gene
20、ral .17 7.1.1 Introduction .17 7.1.2 Objectives and requirements general 20 7.1.3 Objectives .25 7.1.4 Requirements 25 7.2 Concept.25 7.2.1 Objective .25 7.2.2 Requirements 26 7.3 Overall scope definition .26 7.3.1 Objectives .26 7.3.2 Requirements 26 7.4 Hazard and risk analysis27 7.4.1 Objectives
21、.27 7.4.2 Requirements 27 7.5 Overall safety requirements .28 7.5.1 Objective .29 7.5.2 Requirements 29 7.6 Overall safety requirements allocation30 7.6.1 Objectives .30 7.6.2 Requirements 31 7.7 Overall operation and maintenance planning 35 7.7.1 Objective .35 7.7.2 Requirements 35 7.8 Overall safe
22、ty validation planning.37 7.8.1 Objective .37 7.8.2 Requirements 37 7.9 Overall installation and commissioning planning.38 7.9.1 Objectives .38 7.9.2 Requirements 38 7.10 E/E/PE system safety requirements specification .38 7.10.1 Objective .39 7.10.2 Requirements 39 7.11 E/E/PE safety-related system
23、s realisation .41 61508-1 IEC:2010 3 7.11.1 Objective .41 7.11.2 Requirements 41 7.12 Other risk reduction measures specification and realisation.41 7.12.1 Objective .41 7.12.2 Requirements 41 7.13 Overall installation and commissioning.41 7.13.1 Objectives .41 7.13.2 Requirements 42 7.14 Overall sa
24、fety validation.42 7.14.1 Objective .42 7.14.2 Requirements 42 7.15 Overall operation, maintenance and repair .43 7.15.1 Objective .43 7.15.2 Requirements 43 7.16 Overall modification and retrofit .46 7.16.1 Objective .46 7.16.2 Requirements 47 7.17 Decommissioning or disposal.48 7.17.1 Objective .4
25、8 7.17.2 Requirements 48 7.18 Verification 49 7.18.1 Objective .49 7.18.2 Requirements 49 8 Functional safety assessment .50 8.1 Objective .50 8.2 Requirements 50 Annex A (informative) Example of a documentation structure54 Bibliography60 Figure 1 Overall framework of the IEC 61508 series .11 Figure
26、 2 Overall safety lifecycle18 Figure 3 E/E/PE system safety lifecycle (in realisation phase) .19 Figure 4 Software safety lifecycle (in realisation phase) 19 Figure 5 Relationship of overall safety lifecycle to the E/E/PE system and software safety lifecycles.20 Figure 6 Allocation of overall safety
27、 requirements to E/E/PE safety-related systems and other risk reduction measures.32 Figure 7 Example of operations and maintenance activities model 45 Figure 8 Example of operation and maintenance management model .46 Figure 9 Example of modification procedure model.48 Figure A.1 Structuring informa
28、tion into document sets for user groups 59 Table 1 Overall safety lifecycle overview21 Table 2 Safety integrity levels target failure measures for a safety function operating in low demand mode of operation 33 Table 3 Safety integrity levels target failure measures for a safety function operating in
29、 high demand mode of operation or continuous mode of operation 34 4 61508-1 IEC:2010 Table 4 Minimum levels of independence of those carrying out functional safety assessment (overall safety lifecycle phases 1 to 8 and 12 to 16 inclusive (see Figure 2) .53 Table 5 Minimum levels of independence of t
30、hose carrying out functional safety assessment (overall safety lifecycle phases 9 and 10, including all phases of E/E/PE system and software safety lifecycles (see Figures 2, 3 and 4) .53 Table A.1 Example of a documentation structure for information related to the overall safety lifecycle 56 Table
31、A.2 Example of a documentation structure for information related to the E/E/PE system safety lifecycle.57 Table A.3 Example of a documentation structure for information related to the software safety lifecycle 58 61508-1 IEC:2010 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FUNCTIONAL SAFETY OF ELE
32、CTRICAL/ELECTRONIC/ PROGRAMMABLE ELECTRONIC SAFETY-RELATED SYSTEMS Part 1: General requirements FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of
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41、r direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indi
42、spensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61508
43、-1 has been prepared by subcommittee 65A: System aspects, of IEC technical committee 65: Industrial-process measurement, control and automation. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. This edition has been subject
44、to a thorough review and incorporates many comments received at the various revision stages. It has the status of a basic safety publication according to IEC Guide 104. 6 61508-1 IEC:2010 The text of this standard is based on the following documents: FDIS Report on voting 65A/548/FDIS 65A/572/RVD Fu
45、ll information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2 A list of all parts of the IEC 61508 series, published under the general title Functio
46、nal safety of electrical / electronic / programmable electronic safety-related systems, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“
47、 in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 61508-1 IEC:2010 7 INTRODUCTION Systems comprised of electrical and/or electronic elements have been used for many years to perform safety functi
48、ons in most application sectors. Computer-based systems (generically referred to as programmable electronic systems) are being used in all application sectors to perform non-safety functions and, increasingly, to perform safety functions. If computer system technology is to be effectively and safely
49、 exploited, it is essential that those responsible for making decisions have sufficient guidance on the safety aspects on which to make these decisions. This International Standard sets out a generic approach for all safety lifecycle activities for systems comprised of electrical and/or electronic and/or programmable electronic (E/E/PE) elements that are us
