Ten Fingers and Ten Toes: Applying Machinery Safety Principles in a Process Plant
When performing risk assessments on process equipment, are you reviewing machinery as well?
Discrete levels (one out of four) for specifying the safety integrity requirements of the safety instrumented functions (SIF) to be allocated to the safety instrumented systems (SIS). SIL level 4 has the highest level of safety integrity while SIL level 1 has the lowest.