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Key considerations to developing SIS guidelines, with the SIS lifecycle generalized into three main sections: Concept Through Startup, Opera

The ISA/IEC 61511 Safety Life Cycle starts with a Process Hazard Analysis (PHA) and a Risk Assessment. What is a PHA? Why do we do it?...

The process industry uses Layer Of Protection Analysis (LOPA) to document extremely small probabilities for catastrophic events....

Functional safety engineers follow the ISA/IEC 61511 standard and perform calculations based on random hardware failures. These result in...

Incorporate quantitative Human Factors into a SIL analysis. Representative operating units at various stages of maturity in human factors an

Are random hardware failures the only thing that cause a safety instrumented function (SIF) to fail? What if our assumptions are wrong? What

Functional safety specialists may be stuck in the past and doing industry a disservice. The current industry trend is to only consider rando

Functional Safety & Bayesian Networks Functional safety engineers fol low the ISA/IEC 61511 standard & perform calculations based on...

What might go wrong with an FSA, and what might you do to ensure that an FSA runs smoothly?

Inspired by “Conducting an Effective Functional Safety Assessment” presented at 2019 ISA PIC 2019—Process Industry Conference. by Greg...