Day: December 20, 2019

Safety Standards

Safety Standards International Standards such as IEC 61508 and IEC 61511 are prepared by committees of experts from different fields and functions, and are not mandatory in the design or manufacturing, unless the end user or local legislation specifies their direct or indirect compliance. As an example, we will say that OSHA in USA and …

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Safety Instrumented Function

Safety Instrumented Function The Safety Instrumented Function, whose abbreviation is SIF, is a protection layer whose objective is to achieve or maintain a safe state of the process when a specific dangerous event occurs. The SIF is implemented in the SIS (Safety Instrumented System) which is normally composed of several Safety Functions. Each Safety Instrumented …

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