SIL - Safety Integrity Level of the Technical System

The Safety Integrity Level (SIL) is defined as the relative reduction in risk provided by the Safety Instrumented Function (SIF).

SIL is a measure of the power required for SIF. European safety functional standards based on IEC 61508 define four SIL, with SIL 4 having the highest safety integrity level and 1 the lowest.

SIL Analysis – SIL Identification / Classification most often follows the HAZOP study for the assessed equipment / technology.

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OBJECTIVE / BENEFIT OF SIL ANALYSIS (SIL IDENTIFICATION / CLASSIFICATION)

  • Providing SIL classification for all SIFs within the scope of work
  • Proposing actions to optimize the process
  • Exploring other scenarios
  • Modification of the required SIL classification

THE SIL ANALYSIS IS CARRIED OUT IN THE FOLLOWING STEPS

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