IEC 61508-6-ed.2.0

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Označenie: IEC 61508-6-ed.2.0

Dátum vydania: 30.04.2010

Stránok: 237

Krajina: Medzinárodná technická norma

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Looking for deeper insights? Check out IEC 61508:2010 CMV, which includes commented versions of Parts 1 to 7 of IEC 61508. These commented versions highlight the changes made from previous editions and provide explanations from a world-leading expert on the reasons behind the most significant changes. IEC 61508-6:2010 contains information and guidelines on IEC 61508-2 and IEC 61508 3. Annex A gives a brief overview of the requirements of IEC 61508-2 and IEC 61508-3 and sets out the functional steps in their application. Annex B gives an example technique for calculating the probabilities of hardware failure and should be read in conjunction with 7.4.3 and Annex C of IEC 61508-2 and Annex D. Annex C gives a worked example of calculating diagnostic coverage and should be read in conjunction with Annex C of IEC 61508-2. Annex D gives a methodology for quantifying the effect of hardware-related common cause failures on the probability of failure. Annex E gives worked examples of the application of the software safety integrity tables specified in Annex A of IEC 61508-3 for safety integrity levels 2 and 3. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. It has been subject to a thorough review and incorporates many comments received at the various revision stages. This publication is of high relevance for Smart Grid. La CEI 61508-6:2010 contient des informations et lignes directrices sur la CEI 61508-2 et la CEI 61508-3. LAnnexe A presente un bref apercu des exigences de la CEI 61508-2 et de la CEI 61508-3 et etablit les etapes fonctionnelles de leur application. LAnnexe B donne une technique servant dexemple pour le calcul des probabilites de defaillance du materiel; il convient de la lire conjointement au 7.4.3 et a lAnnexe C de la CEI 61508-2, et a lAnnexe D. LAnnexe C donne un exemple elabore de calcul de la couverture de diagnostic; il convient de la lire conjointement avec lAnnexe C de la CEI 61508-2. LAnnexe D donne une methodologie de quantification de leffet des defaillances de cause commune relatives au materiel sur la probabilite de defaillance. LAnnexe E donne des exemples dapplication des tableaux dintegrite de securite du logiciel specifies dans lAnnexe A de la CEI 61508-3 pour les niveaux 2 et 3 dintegrite de securite. Cette deuxieme edition annule et remplace la premiere edition publiee en 1998 dont elle constitue une revision technique. Elle a fait lobjet dune revision approfondie et integre de nombreux commentaires recus lors des differentes phases de revision.