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What is Safety Integrity Levels Explained about?

This document provides information on safety integrity levels (SIL) according to standards IEC 61508 and IEC 61511. It includes definitions of key terms like average probability of failure on demand, safe failure fraction, risk reduction factors. Graphs and formulas are presented for calculating SIL levels based on factors like subsystem failure rates, proof test intervals and effectiveness. The document outlines how to determine the necessary SIL level needed to make a hazardous event tolerably safe.

Author

luisbotton

Language

EN