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EVS-EN 61508-5:2010

Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels

General information

Valid from 06.09.2010
Base Documents
IEC 61508-5:2010; EN 61508-5:2010
Directives or regulations
None

Standard history

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This part of IEC 61508 provides information on –  the underlying concepts of risk and the relationship of risk to safety integrity (see Annex A); –  a number of methods that will enable the safety integrity levels for the E/E/PE safety-related systems to be determined (see Annexes B, C, D and E). The method selected will depend upon the application sector and the specific circumstances under consideration. Annexes C, D, E, F and G illustrate quantitative and qualitative approaches and have been simplified in order to illustrate the underlying principles. These annexes have been included to illustrate the general principles of a number of methods but do not provide a definitive account. Those intending to apply the methods indicated in these annexes should consult the source material referenced.

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