Can we achieve Safety Integrity Level 3 (SIL 3) without analyzing Human Factors?

by Keith Brumbaugh P.E., CFSE & Dave Grattan P.E., CFSE


This paper will examine how we can incorporate quantitative Human Factors into a SIL analysis. Representative operating units at various stages of maturity in human factors analysis and the IEC/ ISA 61511 Safety Lifecycle will be examined. The authors will also share a checklist of the human factor considerations that should be taken into account when designing a SIF or writing a Functional Test Plan. 

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