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  • IEC TR 61511-4:2020

    Current The latest, up-to-date edition.

    Functional safety - Safety instrumented systems for the process industry sector - Part 4: Explanation and rationale for changes in IEC 61511-1 from Edition 1 to Edition 2

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English

    Published date:  19-02-2020

    Publisher:  International Electrotechnical Committee

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    Abstract - (Show below) - (Hide below)

    IEC TR 61511-4:2020(E), Functional safety - safety instrumented systems for the process industry sector, which is a Technical Report:
    • specifies the rationale behind all clauses and the relationship between them,
    • raises awareness for the most common misconceptions and misinterpretations of the clauses and the changes related to them,
    • explains the differences between Ed. 1 and Ed. 2 of IEC 61511-1 and the reasons behind the changes,
    • presents high level summaries of how to fulfil the requirements of the clauses, and
    • explains differences in terminology between IEC 61508-4:2010 and IEC 61511-1 Ed. 2.

    General Product Information - (Show below) - (Hide below)

    Committee TC 65/SC 65A
    Document Type Technical Report
    Product Note This standard also refers to U.S. OSHA. 1992-2014,IEC 61511-1:2016/AMD1:2017
    Publisher International Electrotechnical Committee
    Status Current
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