Summary: This article explores the difference between HAZOP and PHA and their role in promoting safety. PHA analyses processes to identify hazards and assess risks, while HAZOP is a specific method within PHA for identifying deviations from design. HAZOP uses guide words to systematically analyse process systems and propose preventive measures. It is considered effective...

Summary – The article outlines key steps in conducting a PHA, such as defining scope, assembling a team, identifying hazards, assessing risks, developing controls, and reviewing the analysis along with various PHA methods are discussed, including HAZOP, What-If Analysis, FMEA, LOPA, FTA, ETA, Bow Tie Analysis, Checklist-Based Hazard Analysis, and HAZID. Overall, the article serves as...