Instrumentation,  S,  Safety


The abbreviation for Safety-Instrumented System. A function implemented by a safety-instrumented function (SIF) or other technology, safety-related system, or external risk reduction facility, intended to achieve or maintain a safe state with respect to a specific hazardous event. The terms SIS and SIF are often used almost interchangeably, but a safety-instrumented system is a combination of one or more safety-instrumented functions.

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