5 Facets of an Efficient Process Hazard Analysis (PHA)
An efficient and effective PHA can enhance the safety of processes, reduce the risk of accidents and incidents, improve compliance with regu
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.