Dynamic Inherently Safer Modifications: Metric development and its validation for fire and explosion prevention

Gao, Xiaoming and Raman, Abdul Aziz Abdul and Hizaddin, Hanee Farzana and Buthiyappan, Archina and Bello, Mustapha M. (2021) Dynamic Inherently Safer Modifications: Metric development and its validation for fire and explosion prevention. Journal of Loss Prevention in the Process Industries, 71. ISSN 0950-4230, DOI https://doi.org/10.1016/j.jlp.2021.104483.

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Of the numerous inherent safety assessment tools, a dynamic metric capable of investigating and incorporating the temporal risk evolution when conducting Inherently Safer Modifications (ISMs) is yet to be established. To this end, this work developed a Dynamic Inherent Safety Metric (DISM) and validated its functionality and viability through a case study. Firstly, the Information-Flow-based Accident-causing Model (IFAM) was adapted to construct the topology of Bayesian Networks (BN). Then, Bayesian deductive reasoning was executed to do crucial risk identification by ranking posterior probabilities. Finally, risk-based ISMs were performed to address the relatively contributing risk factors. The case study results show that the fire and explosion risk decreased by approximately a third after implementing ISMs, thus demonstrating that the modified processing scenario could be inherently safer than the original processing scenario. The newly developed inherent safety metric (i.e., DISM) can assist in temporal risk identification and assessment, and it is expected to function as a novel assessment tool for measuring and comparing the inherent safeness before and after implementing ISMs with simultaneous considerations on the time-varying risk factors.

Item Type: Article
Uncontrolled Keywords: Inherent safety; Risk assessment; Dynamic bayesian networks; Risk-based safeguard; Fire and explosion prevention
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 31 Mar 2022 04:56
Last Modified: 31 Mar 2022 04:56
URI: http://eprints.um.edu.my/id/eprint/27882

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