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Combining HAZOP with dynamic simulation—Applications for safety education
Authors:Shimon Eizenberg   Mordechai Shacham  Neima Brauner
Affiliation:

aDepartment of Chemical Engineering, Ben-Gurion University, Beer-Sheva 84105, Israel

bSchool of Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel

Abstract:A quantitative variation of the hazard and operability analysis (HAZOP) procedure is demonstrated. The process is divided into sections and dynamic models of the separate sections are prepared. Those models are used in the framework of the HAZOP procedure to determine the magnitude of the deviations from normal operation conditions that may lead to serious accidents and to test design modification to improve the safety characteristic of the process. A process involving an exothermic reaction conducted in a semi-batch reactor is used to demonstrate the advantages of the proposed procedure and its application for safety education and operator training. The programs used for simulating the reactor are available at: ftp://ftp.bgu.ac.il/shacham/OctanoneProd/.

It is shown that the use of those programs can enhance considerably the safety education by providing tools for systematic screening of process deviation associated with possible hazardous events, determining the threshold values that may lead to such events and enabling the examination of a particular design for the adequate safe range of operation.

Keywords:HAZOP   HAZAN   Dynamic simulation   Temperature runaway
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