Application of fuzzy fault tree analysis based on modified fuzzy AHP and fuzzy TOPSIS for fire and explosion in process industry.

This study aimed at establishing fault tree analysis (FTA) using expert opinion to compute the probability of an event. Thus, in order to find the probability of the top event (TE), all probabilities of the basic events (BEs) should be available when FTA is drawn for an event. In this case, employing expert judgment can be used as an alternative to failure data in an awkward situation. The fuzzy analytical hierarchy process (FAHP) as a standard technique is used to give a specific weight to each expert, and fuzzy set theory is engaged for aggregating expert opinion. In this regards, the probability of BEs will be computed and consequently, the probability of TE is obtained using Boolean algebra. Additionally, for the reduction of the probability of TE in terms of three parameter including safety consequences, cost, and benefit; importance measurement technique and modified TOPSIS was employed. The effectiveness of the proposed approach was demonstrated with a real-life case study. PMID: 29557291 [PubMed - as supplied by publisher]
Source: International Journal of Occupational Safety and Ergonomics - Category: Occupational Health Tags: Int J Occup Saf Ergon Source Type: research