SIL (Safety Integrity Level)

A Safety Integrity Level (SIL) is a measure of safety system performance, or probability of failure on demand (PFD) for a SIF (Safety Instrumented Function) or SIS. There are four discrete integrity levels associated with SIL. The higher the SIL level, the lower the probability of failure on demand for the safety system and the better the system performance. It is important to also note that as the SIL level increases, typically the cost and complexity of the system also increase. A SIL level applies to an entire system. Individual products or components do not have SIL ratings. SIL levels are used when implementing a SIF that must reduce an existing intolerable process risk level to a tolerable risk range. (Source: www.gmigasandflame.com)

Posted in HSE and tagged , , .

ThePD

The Project Definitions have been developing and sharing based on actual project execution and operation experiences and knowledge with the Project Language.