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Should PHA practitioners take credit to mitigative safeguards to reduce the impact of an accident when performing qualitative risk analysis?
Author(s) -
Silva Elisio Carvalho
Publication year - 2019
Publication title -
process safety progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.378
H-Index - 40
eISSN - 1547-5913
pISSN - 1066-8527
DOI - 10.1002/prs.12049
Subject(s) - risk analysis (engineering) , hazard , hazard analysis , process (computing) , near miss , process safety management , function (biology) , business , event (particle physics) , risk assessment , operations management , engineering , forensic engineering , actuarial science , computer science , computer security , hazardous waste , waste management , reliability engineering , chemistry , physics , organic chemistry , quantum mechanics , evolutionary biology , biology , operating system
Process hazard analysis (PHA) is important tool to identify the hazard and analyze the risk of a scenario. The risk is a function of the severity and frequency of occurring a loss event. Scenarios with high severity have the possibility to cause severe damage to people, environment and property. However, some companies have missed these scenarios because after applying mitigative safeguards, they have reduced the severity. Thus, these companies have lost the opportunity to draw plan to manage scenarios with high consequences, even if they are scenarios with a low frequency of occurrence. This paper aims to discuss how PHA practitioners should proceed when setting mitigative safeguards. Additionally, it proposes some actions to strengthen the process safety after identifying scenarios with high consequences. © 2019 American Institute of Chemical Engineers Process Saf Prog: e12049 2019