What does HAZOP stand for and its relation to reactivity hazards?

• A. Hazard Analysis and Operational Protocols
• B. Hazard and Operability Study; a structured team review to identify deviations that could cause reactivity hazards and to apply safeguards
• C. Hazardous Atmosphere Observational Procedure
• D. High-Altitude Zonal Operational Plan

Answer: (B)

HAZOP is a structured, multidisciplinary review method used to examine a process design and its operating procedures to uncover deviations from normal operation that could create hazards, including reactivity hazards. The team walks through the process step by step and uses guide words (like more, less, none, reverse) to prompt thinking about what could go wrong if feed rates, temperatures, pressures, compositions, or sequences of operations change. For each potential deviation, the group considers possible consequences—such as exothermic runaway, formation of incompatible mixtures, gas buildup, or unintended reactions—and then identifies safeguards to prevent or mitigate them. These safeguards might include design changes, better control strategies, alarms and interlocks, containment, ventilation, and clear operating procedures.

Relating to reactivity hazards, HAZOP helps surface scenarios where reactive chemicals could interact in unexpected ways or where heat release could overwhelm cooling, leading to dangerous situations. By identifying these scenarios early, the study guides the implementation of preventive measures and response plans, reducing the likelihood of incidents.

The other options do not describe this established method. The first option mislabels the approach, the third and fourth are unrelated terms, so the recognized term and its purpose are best captured here.