Historical
ISA TR84.00.03-2019
Mechanical Integrity of Safety Instrumented Systems (SIS)
A process hazards analysis is used to identify the safety functions necessary to reduce the risk of identified hazardous events. When a safety function is implemented in a safety instrumented system (SIS), the risk reduction required from the safety instrumented function (SIF) is related to one of four discrete safety integrity levels (SIL). The function and system are designed and managed according to ANSI/ISA-84.00.01, which establishes requirements necessary to claim the specified SIL for the SIS throughout its life.
CONTENT PROVIDER
The International Society of Automation [isa]
The International Society of Automation [isa]