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Dynamic safety analysis of process systems by mapping bow-tie into Bayesian network

Open access
Khakzad, Nima, Khan, Faisal, Amyotte, Paul·2013·Process Safety and Environmental Protection

Abstract

Abstract Among the various techniques used for safety analysis of process systems, bow-tie (BT) analysis is becoming a popular technique as it represents an accident scenario from causes to effects. However, the BT application in the dynamic safety analysis is limited due to the static nature of its components, i.e. fault tree and event tree. It is therefore difficult in BT to take accident precursors into account to update the probability of events and the consequent risk. Also, BT is unable to represent conditional dependency. Event dependency is common among primary events and safety barriers. The current paper illustrates how Bayesian network (BN) helps to overcome these limitations. It has also been shown that BN can be used in dynamic safety analysis of a wide range of accident scenarios due to its flexible structure. This paper also introduces the application of probability adapting in dynamic safety analysis rather than probability updating. A case study from the U.S. Chemical Safety Board has been used to illustrate the application of both BT and BN techniques, with a comparison of the results from each technique.

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Crossref · 10.1016/j.psep.2012.01.005

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Metadata

Authors
Khakzad, N., Khan, F., & Amyotte, P.
Venue
Process Safety and Environmental Protection
Publisher
Elsevier BV
Published
2013-01
Volume
91
Issue
1-2
Pages
46-53
ISSN
  • 0263-8762 (ISSN-L)
  • 0957-5820
OpenAlex
W2043089065
Cited by
603
References
0
FWCI
21.23
Type
journal article
Language
en
Open access
green

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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