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Hazard and Operability Study (HAZOP)

Last updated: August 21, 2017

What Does Hazard and Operability Study (HAZOP) Mean?

A hazard and operability (HAZOP) study is a systematic brain storming process of assessing the existence of hazards in equipment and vulnerability of its operation. It is a risk assessment toll that provides information to the management who can make decisions to improve safety and conduct safe operations. Hazard and operability (HAZOP) studys concentrate on recognizing hazards and operability problems in an orderly approach, where hazard identification and operability are the main attentions.

Safeopedia Explains Hazard and Operability Study (HAZOP)

A hazard is any object or operation that could possibly cause an accident or accidental release of toxic, flammable or explosive chemicals that may injure humans or cause a loss of properties. Operability is the functionality that could possibly otherwise lead to a violation of environmental, health or safety regulations or negatively impact profitability if something went wrong.

Safety and reliability are ensured during the design and development of machinery or designing process, considering codes of practices and standards. The production of machinery requires knowledge of engineering, safety and experience of individual experts and the industry. Often, it becomes obvious to supplement these with imaginations for better safety, speed and quality, but accidents might occur because of machinery failure or operator error. Sometimes, designers are under pressure to keep the project on time and that results in errors and mistakes, which cause accidents. HAZOP study is, therefore, essential in an effort to correct these safety faults and hazards before an accident takes place.


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