HAZOP METHODOLOGY

Hazard and operability (HAZOP) studies are undertaken by the application of a formal, systematic, and critical approach to examine the process and engineering intentions of a process design. The potential for hazard is thus assessed, and the chances of malfunction of an individual equipment and its consequences for a whole system, are identified. The examination of the design is structured around a specific set of guidewords, then ensure complete coverage of all possible problems while allowing sufficient flexibility for an imaginative approach.

 

The overall aims to which any HAZOP should be addressed are:

1. To identify all deviations from the way the design is intended to work, their causes, and all the hazards and operability problems associated with these deviations.
2. To decide whether action is required to control the hazard or the operability problem, and if so, to identify the ways in which the problems can be solved.
3. To identify cases where a decision cannot be taken immediately and to decide on what information or action is required.
4. To ensure actions decided are followed through.

Given on a separate page is a list of guidewords that may be used in a HAZOP Study. The list is not exhaustive and there is no substitute for the brain storming and creative thinking of a good HAZOP team.