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VDI/VDE 2180 Blatt 4

Functional safety in the process industry - Mechanical components in safety instrumented systems

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German title

Funktionale Sicherheit in der Prozessindustrie - Mechanische Komponenten in PLT-Sicherheitseinrichtungen

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Engl. VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik
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German, English

Based on VDI/VDE 2180 Part 1 and Part 2, this standard describes the special aspects to be considered when mechanical components are part of a safety instrumented system. On the one hand, this concerns the avoidance of the systematic faults which are by far the most important for these components, but also the consideration of the random faults occurring extremely rare in these components and the associated PFD calculation. Both for the systematic and the random faults, only the dangerous faults are considered, i.e. those which have an influence on plant safety (see VDI/VDE 2180 Part 1, Section 7.1.).

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