IntroductionSafety Integrity Level (SIL) Verification is needed when a Safety Instrumented Systems (SIS) is one of the critical independent protection layers for process safety. Applications of SIS include automated isolation, trips or interlocks found commonly in oil & gas upstream, refining, chemical and pharmaceutical production.Get ...

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Calculations for verifying a Safety Instrumented Function (SIF) with Safety Integrity Level (SIL) performance requirement are standard in the process industry these days. You will find examples in both the IEC 61508 and IEC 61511 standards and Functional Safety (FS) training courses like those available ...

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Are the terms "Mean Time Between Failures" (MTBF) and "Safety Integrity Level" (SIL) related to each other? Some would think not but read on if you'd like to discover if that's true.MTBFEquipment suppliers have been providing MTBF data for their electrical and electronic equipment for ...

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This blog will help if you have ever tried to do a SIL verification for probability of failure (PFD or PFH) of a safety function.  A safety integrity level - SIL verification - is needed for compliance with IEC 61511 / ISA 61511 in the ...

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