IEC TR 61508-0-2005 Functional safety of electrical electronic programmable electronic safety-related systems - Part 0 Functional safety and IEC 61508《电气 电子 可编程.pdf

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1、RAPPORTTECHNIQUECEIIECTECHNICALREPORTTR 61508-0Premire ditionFirst edition2005-01Scurit fonctionnelle des systmes lectriques/lectroniques/lectroniques programmables relatifs la scurit Partie 0: La scurit fonctionnelle et la CEI 61508 Functional safety of electrical/electronic/programmable electronic

2、 safety-related systems Part 0: Functional safety and IEC 61508Numro de rfrence Reference number CEI/IEC/TR 61508-0:2005 Numrotation des publications Depuis le 1er janvier 1997, les publications de la CEI sont numrotes partir de 60000. Ainsi, la CEI 34-1 devient la CEI 60034-1. Editions consolides L

3、es versions consolides de certaines publications de la CEI incorporant les amendements sont disponibles. Par exemple, les numros ddition 1.0, 1.1 et 1.2 indiquent respectivement la publication de base, la publication de base incorporant lamendement 1, et la publication de base incorporant les amende

4、ments 1 et 2. Informations supplmentaires sur les publications de la CEI Le contenu technique des publications de la CEI est constamment revu par la CEI afin quil reflte ltat actuel de la technique. Des renseignements relatifs cette publication, y compris sa validit, sont dispo-nibles dans le Catalo

5、gue des publications de la CEI (voir ci-dessous) en plus des nouvelles ditions, amendements et corrigenda. Des informations sur les sujets ltude et lavancement des travaux entrepris par le comit dtudes qui a labor cette publication, ainsi que la liste des publications parues, sont galement disponibl

6、es par lintermdiaire de: x Site web de la CEI (www.iec.ch)x Catalogue des publications de la CEI Le catalogue en ligne sur le site web de la CEI (www.iec.ch/searchpub) vous permet de faire des recherches en utilisant de nombreux critres, comprenant des recherches textuelles, par comit dtudes ou date

7、 de publication. Des informations en ligne sont galement disponibles sur les nouvelles publications, les publications remplaces ou retires, ainsi que sur les corrigenda. x IEC Just Published Ce rsum des dernires publications parues (www.iec.ch/online_news/justpub) est aussi dispo-nible par courrier

8、lectronique. Veuillez prendre contact avec le Service client (voir ci-dessous) pour plus dinformations. x Service clients Si vous avez des questions au sujet de cette publication ou avez besoin de renseignements supplmentaires, prenez contact avec le Service clients: Email: custserviec.chTl: +41 22

9、919 02 11 Fax: +41 22 919 03 00Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For

10、example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant re

11、view by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication, including its validity, is available in the IEC Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. Information on the subjects under consi

12、deration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is also available from the following: x IEC Web Site (www.iec.ch)x Catalogue of IEC publicationsThe on-line catalogue on the IEC web site (www.iec.ch/s

13、earchpub) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. x IEC Just Published This summary of rece

14、ntly issued publications (www.iec.ch/online_news/justpub) is also available by email. Please contact the Customer Service Centre (see below) for further information. x Customer Service CentreIf you have any questions regarding this publication or need further assistance, please contact the Customer

15、Service Centre: Email: custserviec.chTel: +41 22 919 02 11 Fax: +41 22 919 03 00.RAPPORTTECHNIQUECEIIECTECHNICALREPORTTR 61508-0Premire ditionFirst edition2005-01Scurit fonctionnelle des systmes lectriques/lectroniques/lectroniques programmables relatifs la scurit Partie 0: La scurit fonctionnelle e

16、t la CEI 61508 Functional safety of electrical/electronic/programmable electronic safety-related systems Part 0: Functional safety and IEC 61508 IEC 2005 Droits de reproduction rservs Copyright - all rights reservedAucune partie de cette publication ne peut tre reproduite ni utilise sous quelque for

17、me que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de lditeur. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permissi

18、on in writing from the publisher. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch QCommission Electrotechnique InternationaleInternational Electrotechnica

19、l CommissionF_mgZjhgZy We_dljhl_ogbq_kdZy DhfbkkbyPour prix, voir catalogue en vigueur For price, see current catalogueCODE PRIX PRICE CODE 2 TR 61508-0 CEI:2005 SOMMAIRE AVANT-PROPOS4INTRODUCTION.81 Domaine dapplication 102 Rfrences normatives .103 Scurit fonctionnelle .123.1 Quest ce que la scurit

20、 fonctionnelle ? 123.2 Fonctions de scurit et systmes relatifs la scurit.123.3 Exemple de scurit fonctionnelle143.4 Dfis rencontrs dans latteinte de la scurit fonctionnelle 144 CEI 61508 Scurit fonctionnelle des systmes E/E/PE relatifs la scurit.164.1 Objectifs164.2 Systmes E/E/PE relatifs la scurit

21、 .164.3 Approche technique.184.4 Niveaux dintgrit de scurit .204.5 Exemple de scurit fonctionnelle revisite 204.6 Structure de la CEI 61508224.7 La CEI 61508, base pour dautres normes264.8 La CEI 61508 comme norme autonome264.9 Autres informations28Annexe A (informative) Liste de questions frquemmen

22、t poses, tire de la zone scurit fonctionnelle du site de la CEI30TR 61508-0 IEC:2005 3 CONTENTSFOREWORD.5INTRODUCTION.91 Scope 112 Normative references .113 Functional safety 133.1 What is functional safety? 133.2 Safety functions and safety-related systems.133.3 Example of functional safety 153.4 C

23、hallenges in achieving functional safety .154 IEC 61508 Functional safety of E/E/PE safety-related systems .174.1 Objectives .174.2 E/E/PE safety-related systems.174.3 Technical approach .194.4 Safety integrity levels 214.5 Example of functional safety revisited 214.6 Parts framework of IEC 61508 .2

24、34.7 IEC 61508 as a basis for other standards.274.8 IEC 61508 as a stand-alone standard.274.9 Further information 29Annex A (informative) List of frequently asked questions from IEC “functional safety” zone .31 4 TR 61508-0 CEI:2005 COMMISSION LECTROTECHNIQUE INTERNATIONALE _SCURIT FONCTIONNELLE DES

25、 SYSTMES LECTRIQUES/LECTRONIQUES/LECTRONIQUES PROGRAMMABLES RELATIFS A LA SCURIT Partie 0: La scurit fonctionnelle et la CEI 61508 AVANT-PROPOS1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation compose de lensemble des comits lectrotechniques nation

26、aux (Comits nationaux de la CEI). La CEI a pour objet de favoriser la coopration internationale pour toutes les questions de normalisation dans les domaines de llectricit et de llectronique. A cet effet, la CEI entre autres activits publie des Normes internationales, des Spcifications techniques, de

27、s Rapports techniques, des Spcifications accessibles au public (PAS) et des Guides (ci-aprs dnomms “Publication(s) de la CEI“). Leur laboration est confie des comits dtudes, aux travaux desquels tout Comit national intress par le sujet trait peut participer. Les organisations internationales, gouver

28、nementales et non gouvernementales, en liaison avec la CEI, participent galement aux travaux. La CEI collabore troitement avec lOrganisation Internationale de Normalisation (ISO), selon des conditions fixes par accord entre les deux organisations. 2) Les dcisions ou accords officiels de la CEI conce

29、rnant les questions techniques reprsentent, dans la mesure du possible, un accord international sur les sujets tudis, tant donn que les Comits nationaux de la CEI intresss sont reprsents dans chaque comit dtudes. 3) Les Publications de la CEI se prsentent sous la forme de recommandations internation

30、ales et sont agres comme telles par les Comits nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI sassure de lexactitude du contenu technique de ses publications; la CEI ne peut pas tre tenue responsable de lventuelle mauvaise utilisation ou interprtation qui en est fa

31、ite par un quelconque utilisateur final. 4) Dans le but dencourager luniformit internationale, les Comits nationaux de la CEI sengagent, dans toute la mesure possible, appliquer de faon transparente les Publications de la CEI dans leurs publications nationales et rgionales. Toutes divergences entre

32、toutes Publications de la CEI et toutes publications nationales ou rgionales correspondantes doivent tre indiques en termes clairs dans ces dernires. 5) La CEI na prvu aucune procdure de marquage valant indication dapprobation et nengage pas sa responsabilit pour les quipements dclars conformes une

33、de ses Publications. 6) Tous les utilisateurs doivent sassurer quils sont en possession de la dernire dition de cette publication. 7) Aucune responsabilit ne doit tre impute la CEI, ses administrateurs, employs, auxiliaires ou mandataires, y compris ses experts particuliers et les membres de ses com

34、its dtudes et des Comits nationaux de la CEI, pour tout prjudice caus en cas de dommages corporels et matriels, ou de tout autre dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les cots (y compris les frais de justice) et les dpenses dcoulant de la publication ou de lu

35、tilisation de cette Publication de la CEI ou de toute autre Publication de la CEI, ou au crdit qui lui est accord. 8) Lattention est attire sur les rfrences normatives cites dans cette publication. Lutilisation de publications rfrences est obligatoire pour une application correcte de la prsente publ

36、ication. 9) Lattention est attire sur le fait que certains des lments de la prsente Publication de la CEI peuvent faire lobjet de droits de proprit intellectuelle ou de droits analogues. La CEI ne saurait tre tenue pour responsable de ne pas avoir identifi de tels droits de proprit et de ne pas avoi

37、r signal leur existence. La tche principale des comits dtudes de la CEI est llaboration des Normes inter-nationales. Toutefois, un comit dtudes peut proposer la publication dun rapport technique lorsquil a runi des donnes de nature diffrente de celles qui sont normalement publies comme Normes intern

38、ationales, cela pouvant comprendre, par exemple, des informations sur ltat de la technique. La CEI 61508-0, qui est un rapport technique, a t tablie par le sous-comit 65a: Aspects systmes, du comit dtudes 65 de la CEI: Mesure et commande dans les processus industriels. TR 61508-0 IEC:2005 5 INTERNAT

39、IONAL ELECTROTECHNICAL COMMISSION _FUNCTIONAL SAFETY OF ELECTRICAL/ELECTRONIC/ PROGRAMMABLE ELECTRONIC SAFETY-RELATED SYSTEMS Part 0: Functional safety and IEC 61508 FOREWORD1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national

40、 electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Sp

41、ecifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. Inter

42、national, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The for

43、mal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations f

44、or international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user.

45、4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication sha

46、ll be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liab

47、ility shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (incl

48、uding 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 indispensable 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 resp

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