Dynamic safety analysis of process systems by mapping bow-tie into Bayesian network
By Nima Khakzad, F. Khan, Paul Amyotte. 2013
560 citations recorded by the source corpus.
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.
Subfields: Radiological and Ultrasound Technology, Safety, Risk, Reliability and Quality, Statistics and Probability
View Paper: https://www.semanticscholar.org/paper/7dde5043f6216dbbb7873b9c8228196a5f42fb14
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In Radiological and Ultrasound Technology
In Safety, Risk, Reliability and Quality
In Statistics and Probability
Citations in the corpus
- Applications of Bayesian networks and Petri nets in safety, reliability, and risk assessments: A review (2019, methodology): “Different other artefacts such as bow-tie diagrams were translated to BNs in (Khakzad et al., 2013a; Abimbola et al., 2015) and FMEA was translated to BNs in (Chengshan and Yinghua, 2004).”
- The future of risk assessment (2018, methodology): “A comparison of the BT-based and BN-based methods were made in [98], and a procedure was given to map a BT into a BN.”