Hazard & Operability study (HaZOP)

Hazard & Operability study Also called HaZOP

Determination of deviation from their design basis

Diagrams of the facility’s piping, electrical system and instrumentation can be used

The hazard and operability (HAZOP) study is the most commonly used

process hazard analysis (PHA) method in the world today.

Originated as a hazard identification technique for process plants commonly applied in petrochemical, nuclear and food processing industries.

Described as a system of imaginative anticipation of hazards.

Always a team activity.

Concentrates on deviations in flows between components.

Uses well-defined guide words to steer analysis.

Considers both plausible causes and possible consequences of deviations.

The flowchart in the figure illustrates the process of conducting a HAZOP study