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Comparison of two techniques of fault tree analysis and Tripod-Beta using the analytic hierrarchy process for accidents analysis in a steel-manufacturing industry

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Author(s): Effat Lali-Dastjerdi | Iraj Mohammadfam

Journal: Journal of School of Public Health and Institute of Public Health Research
ISSN 1735-7586

Volume: 10;
Issue: 1;
Start page: 43;
Date: 2012;
Original page

Keywords: Accidents analysis | Steel-manufacturing industry | FTA | Tripod Beta | AHP

ABSTRACT
Background and Aim: The purpose of this study was to compare the two techniques of fault tree analysis (FTA) and Tripod-Beta using the analytic hierrarchy process (AHP) for choosing the preferred technique to be used in the analysis of grave accidents in a steel-manufacturing company. Materials and Methods: This research project was carried out in three main phases.  In the first phase two disastrous accidents were sketched for analysis and, using the two techniques of FTA and Tripod-Beta, the causes for their occurrence were determined. In the second phase 7 criteria were chosen for comparing the two techniques. Finally, in the third phase, the two techniques were compared on the basis of chosen criteria, using AHP. Results: The findings showed that the criterion for the number of accidents' agents with a priority of 0.435 had the highest priority, followed by quantitative ability, cost of analysis, time spending, and software need with a priority of  0.07,  0.059,  0.038,  and 0.036, respectively. Conclusion: Considering all the chosen criteria, it can be concluded that the fault free analysis technique with a priority of 0.624 is superior to Tripod Beta technique with priority a priority of 0.35.  Key words: Accidents analysis, Steel-manufacturing industry, FTA, Tripod Beta, AHP
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