Safety Instrumented System
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A Safety Instrumented System (SIS) is an independent system composed of sensors, logic solvers (e.g. controllers), and final control elements for the purpose of taking the process to a safe state when pre-determined conditions are violated. International standard IEC 61511 was published in 2003 to provide guidance to end-users on the application of Safety Instrumented Systems in the process industries.
External links
- [Safety-critical systems]
- [ANSI standards] Purchase IEC 61511
- [ISA Standards] Purchase S84
- [Siemens Process Safety]
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