HAZOP is a required activity in every Management of Change (MOC) process.

• A. True
• B. Sometimes
• C. Never
• D. False

Answer: (D)

In a Management of Change process, you must assess how a proposed change could affect hazards, but a full HAZOP isn’t mandatory for every change. HAZOP is a detailed hazard analysis technique used to systematically identify potential deviations from design intent and their consequences. Whether you need a HAZOP depends on the nature and risk of the change. For minor or routine changes, simpler risk assessments, checklists, or what-if analyses may be sufficient. For significant changes that could alter operating conditions, introduce new materials, or create new hazards, a HAZOP or other formal PHA method is appropriate. So, the requirement is to perform hazard evaluation appropriate to the change, not to perform a HAZOP in every MOC.