ISA85 (Safety Instrumented Systems)

ISA-84 (also known as IEC 61511) is a standard that guides the design and operation of Safety Instrumented Systems (SIS), which are specialized systems used to prevent or mitigate hazardous events in industrial processes. These systems automatically detect dangerous conditions and take actions, like shutting down equipment, to protect people, the environment, and assets. ISA-84 ensures these safety systems are reliable, properly designed, tested, and maintained, reducing the risk of accidents. It promotes a structured approach to analyze hazards, set safety targets, and implement solutions that function correctly when needed.