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Abstract
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The hazard and operability, or HAZOP, study is a prime method for the identification of hazards on process plants.
This is the fourth in a series of papers which describe progress in the emulation of hazard identification in the style of HAZOP. The work reported is embodied in a computer aid for hazard identification, or HAZOP emulator, HAZID. The HAZID code is one of a suite of codes developed as part of the STOPHAZ project.
The present paper describes the learning set of case study plants and the main case study system, used to improve the HAZID models by providing feedback on weak areas of the unit and fluid models. It also discusses the issues of correctness, completeness and conciseness in connection with output quality from HAZOP emulation. A test set of case studies were used to validate performance--the results of the evaluation of HAZID using these case studies are also discussed.
Companion papers describe: an overview of HAZID, with an account of HAZOP and HAZOP emulation, and of the issues underlying it, the structure of HAZID and the associated tools in the STOPHAZ package; the unit model system; the fluid model system and the evaluation of consequences;some development topics. Conclusions from the work are given at the close of the final paper. |