IEC IEC 60300-3-4 Edition 3.02022-03 INTERNATIONAL STANDARD NORME INTERNATIONALE colour nside Dependability management - Part 3-4: Application guide - Specification of dependability requirements Gestion de la sureté de fonctionnement - Partie 3-4: Guide d'application - Spécification d'exigences de streté de fonctionnement IEC 60300-3-4:2022-03(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2022 IEC, Geneva, Switzerland 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, piease contact the address below or yourlocal IECmemberNational Committeeforfurtherinformation. Droits de reproduction réserves. Sauf indication contraire, aucune partie de cette publication ne peut étre reproduite ni les microfilms, sans I'accord écrit de I'EC ou du Comite national de I'IEc du pays du demandeur. Si vous avez des questions sur le copyright de I'lEC ou si vous desirez obtenir des droits supplementaires sur cette publication, utilisez les coordonnees ci-apres ou contactez le Comite national de I'lEC de votre pays de residence. IEC Secretariat Tel.: +41 22 919 02 11 3,ruedeVarembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About theIEC 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 corrigendum or an amendment might have been published. IEC publications search - webstore.iec.ch/advsearchform IEc Products &Services Portal-products.iec.ch The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the number,'text, technical varietyof criteria(reference publications previews.Witha subscription you will always have committee, ...). It also gives information on projects, replaced access to up to date content tailored to your needs. and withdrawn publications. Electropedia -www.electropedia.org IEC Just Published - webstore.iec.ch/iustpublished The world's leading online dictionary on electrotechnology, Stay up to date on all new IEC publications. Just Published containing more than 22 300 terminological entries in English details all new publications released. Available online and once and French, with equivalent terms in 19 additional languages. a month by email. Also known as the International Electrotechnical Vocabulary (IEV) online. IEC Customer Service Centre - webstore.iec.ch/csC If you wish to give us your feedback on this publication or need further assistance, ，pleasecontacttheCustomerService Centre: [email protected]. A propos de I'IEc La Commission Electrotechnique Internationale (IEC) est la premiere organisation mondiale qui elabore et publie des Normes internationales pour tout ce qui a trait a I'électricité, a l'électronique et aux technologies apparentees. A propos des publications IEc Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez I'édition la plus recente,un corrigendum ou amendementpeut avoir éte publie. RecherchedepublicationsIEc IEc Products &Services Portal -products.iec.ch Decouvrez notre puissant moteur de recherche et consultez webstore.iec.ch/advsearchform La recherche avanceepermet de trouver des publications IEC gratuitement tous les apercus des publications. Avec un en utilisant differents criteres (numero de reference, texte, abonnement, vous aurez toujours acces a un contenu a jour comite d'études, ...). Elle donne aussi des informations sur les adaptea vos besoins. projets et les publications remplacees ou retirees. Electropedia -www.e