(96c) LOPA Is Obsolete! Move to Quantitative Bowtie Analysis
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 12, 2022 - 11:15am to 11:45am
Recent research into Unified Hazard Assessment that combines HAZOP, LOPA, and bowtie analysis has yielded techniques that elegantly address all the limitations of LOPA while also providing a graphical presentation that facilitates result communication. This paper will provide background on how Unified Hazard Assessment yielded the techniques of Quantitative Bowtie analysis. The paper will also describe in detail how to implement quantitative bowtie analysis along with the mathematical concepts used for quantification of risk for multiple causes and multiple consequences inside a single scenario. The concepts will be presented using example studies that include mitigative safeguards and multiple cause scenarios.