A systematic review of process deviations and operability concerns.
HAZOP is presented here as the verified representative endpoint of the Process Hazard Analysis hierarchy.
A Hazard and Operability Study is a structured, multidisciplinary review used to examine how deviations from intended process conditions may occur and what those deviations could mean for safe and reliable operation.
The method creates a repeatable discussion framework. It helps a study team move through the process systematically, record relevant scenarios, and identify where further action or clarification may be required.
Identify credible process deviations.
The study examines how operating conditions may depart from design intent and what consequences may follow.
Use guide words systematically.
A structured team review applies guide words to process parameters to prompt consistent examination of deviations.
Consider causes, effects, and safeguards.
Each scenario is considered in context, including possible causes, consequences, existing protection, and further action.
Document findings and actions.
The resulting record organizes the reviewed scenarios and the actions identified during the study process.
Final objectives, boundaries, participants, records, and deliverables must follow the verified requirements of each project.