Journal
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
Volume 111, Issue -, Pages 507-519Publisher
ELSEVIER
DOI: 10.1016/j.psep.2017.08.015
Keywords
Hazard analysis; Fault tree analysis; Bayesian networks; Fuzzy set theory; Process industry; Risk analysis
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Fault tree analysis is a widely used method of risk assessment in process industries. However, the classical fault tree approach has its own limitations such as the inability to deal with uncertain failure data and to consider statistical dependence among the failure events. In this paper, we propose a comprehensive framework for the risk assessment in process industries under the conditions of uncertainty and statistical dependency of events. The proposed approach makes the use of expert knowledge and fuzzy set theory for handling the uncertainty in the failure data and employs the Bayesian network modeling for capturing dependency among the events and for a robust probabilistic reasoning in the conditions of uncertainty. The effectiveness of the approach was demonstrated by performing risk assessment in an ethylene transportation line unit in an ethylene oxide (EO) production plant. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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