IEC IEC 61508-1 Edition 2.02010-04 INTERNATIONAL STANDARD NORME INTERNATIONALE BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SECURITE Functionalsafetyof electrical/electronic/programmable electronicsafety-related systems Part 1: General requirements Sécurité fonctionnelle des systemes électriques/électroniques/électroniques programmables relatifs a la sécurité - Partie 1: Exigences genérales IEC61508-1:2010 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 or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEc copyright or have an enquiry about obtaining additional rights to this publication, please contactthe address beloworyourlocalIECmemberNational Committeeforfurther information Droits de reproduction réserves. Sauf indication contraire, aucune partie de cette publication ne peut etre reproduite ni utilisée sous quelque forme que ce soit et par aucun procedé,électronique ou mecanique,y compris la photocopie et les microfilms, sans I'accord écrit de la CEl oudu Comite national de la CEl du pays du demandeur. Si vous avez des questions sur le copyright de la CEl ou si vous desirez obtenir des droits supplementaires sur cette publication, utilisez les coordonnees ci-apres ou contactez le Comite national de la CEl de votre pays de residence. IECCentral Office 3, rue de Varembé CH-1211 Geneva 20 Switzerland Email:[email protected] Web: www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. AboutIECpublications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. -CatalogueofIECpublications:www.iec.ch/searchpub The IEc on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,..). Italso gives information on projects, withdrawn and replaced publications. -IEC JustPublished:www.iec.ch/onlinenews/iustpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line andalsobyemail. -Electropedia:www.electropedia.org The world's leading online dictionary of electronic and electrical terms containing more than 2o ooo terms and definitions in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary online. - Customer Service Centre: www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQor contact us: Email:[email protected] Tel.:+41229190211 Fax:+41229190300 A propos de la CEI La Commission Electrotechnique Internationale (CEl) est la premiere organisation mondiale qui élabore et publie des normes internationales pour tout ce qui a trait a I'électricite, a I'électronique et aux technologies apparentees. A propos des publications CEl Le contenu technique des publications de la CEl est constamment revu. Veuillez vous assurer que vous possédez I'édition laplus récente, un corrigendum ou amendement peut avoir éte publie. - Catalogue des publications de la CEl: www.iec.ch/searchpub/cur fut-f.htm Le Catalogue en-ligne de la CEl vous permet d'effectuer des recherches en utilisant differents criteres (numero de reference, texte, comite d'études,...). ll donne aussi des informations sur les projets et les publications retirees ou remplacees. -JustPublished CEl:www.iec.ch/online news/justpub Restez informé sur les nouvelles publications de la