IEC IEC81355-1 iSo Edition 1.02024-12 INTERNATIONAL STANDARD NORME INTERNATIONALE colour inside HORIZONTAL STANDARD NORME HORIZONTALE Industrial systems, installations and equipment and industrial products - Classification and designation of information - Part 1: Basic rules and classification of information Systemes industriels, installations et materiels et produits industriels - Classification et désignation des informations : Partie 1: Regles de base et classification des informations IEC 81355-1:2024-12(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2024 IEC, Geneva, Switzerland or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from copyright or have an enquiry about obtaining additional rights to this publication, piease contact the address below or yourlocal IECmemberNational Committeeforfurtherinformation. Droits de reproduction reserves. Sauf indication contraire,aucune partie de cette publication ne peut etre reproduite ni utilisee sous quelque forme que ce soit et par aucun procede, électronique ou mecanique, y compris la photocopie et les microfilms, sans I'accord écrit de I'lEC 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 lescoordonnées ci-apres oucontactez le Comite nationaldeI'lECdevotrepays de réesidence. IEC Secretariat Tel.: +4122 919 0211 3, rue de Varembe [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standardsforall electrical, electronic and related technologies. About IECpublications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latestedition,acorrigendumoranamendmentmighthavebeenpublished. IEcpublicationssearch-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 variety of criteria (reference publications previews, graphical symbols and the glossary. number, text, technical committee, ...). It also gives information on projects, replaced With a subscription you wili always have access to up to date and withdrawn publications. content tailored to your needs IECJustPublished-webstore.iec.ch/justpublished Electropedia-www.electropedia.org Stay up to date on all new IEC publications. Just Published The world's leading online dictionary on electrotechnology, details all new publications released.Available online and once containing more than 22 500 terminological entries in English a month by email. and French, with equivalent terms in 25 additional languages. Alsoknown as the International ElectrotechnicalVocabulary IEcCustomerServiceCentre-webstore.iec.ch/csc (IEV) online. If you wish to give us your feedback on thispublication or need further assistance,please contact the Customer Service 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 pourtout ce qui a trait aI'électricite,ai'électronique et aux technologies apparentees AproposdespublicationsIE Le contenu technique despublications IEC est constamment revu.Veuillez vous assurer quevous possedez I'édition la plus recente, un corrigendum ou amendement peut avoir éte publie. RecherchedepublicationsIEc. Decouvrez notre puissant moteur de recherche et consultez webstore.iec.ch/advsearchform gratuitement tous les apercus des publications, symboles Larechercheavancéepermetdetrouverdespublications IEC graphiques et le glossaire. Avec un abonnement, vous aurez en utilisant differents criteres (numero de reference, texte, toujours acces a un contenu a jouradapt