Comparing of HAZOP and ETBA Techniques in Safety Risk Assessment at Gasoline Refinery Industry
Author(s):
Abstract:
Background And Objective
Prevention of accidentsa crucial requirement in oil industriesinvolves hazard recognition, risk assessment, and corrective actions. The purpose of this study was to compare the ETBA and HAZOP techniques for risk assessment in a gasoline refinery unit.Methods
In this case study, data were collected using process flow diagram, walkingtalking through method, piping and instrumentation diagram, and direct observations. Worksheets for both techniques were filled on the basis of the risk assessment matrix MIL-STD-882E.Results
The HAZOP method identified 44 deviations attributable to 118 causes. In addition, 11.37% of the identified hazards were associated with unacceptable risk, and 36.36%, with unfavorable risk. The ETBA method detected 10 groups of energy (24 subgroups) 33 hazards were detected, 10.62% of which were associated with unacceptable risk.Conclusions
HAZOP proved to be the more powerful technique for the prediction and identification of hazards. However, ETBA detected certain hazards that were not identifiable using HAZOP. Therefore, a combination of these two methods is desirable for the assessment of hazard risk in process industries.Keywords:
oil refinery , hazard , ETBA , HAZOP
Language:
English
Published:
Journal of Human Environment and Health Promotion, Volume:1 Issue: 1, Winter 2015
Pages:
19 to 27
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