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Risk-based optimal safety measure allocation for dust explosions


Yuan, Z and Khakzad, N and Khan, FI and Amyotte, P, Risk-based optimal safety measure allocation for dust explosions, Safety Science, 74 pp. 79-92. ISSN 0925-7535 (2015) [Refereed Article]

Copyright Statement

Copyright 2014 Elsevier Ltd.

DOI: doi:10.1016/j.ssci.2014.12.002


Optimal allocation of safety strategies in order to reduce threats of dust explosions is very challenging, particularly when all potential accident contributors and various safety measures are to be taken into account. In this paper, we have proposed a risk-based optimal allocation of safety measures while considering both available budget and acceptable residual risk. The methodology is based on a Bayesian network (BN) to model the risk of dust explosions, which in turn helps identify key contributing factors, assess performances of relative safety measures, and decide on those safety measures to most efficiently control the risks of dust explosions within a limited budget. The Bayesian network also facilitates the implementation of diagnostic analysis to determine vulnerable parts in the system to which special attention should be paid in safety measure allocation. The Net Risk Reduction Gain (NRRG) for each relevant safety measure is also used to simultaneously account for both the cost of a safety measure and the respective risk reduction. Accordingly, the risk-based optimal allocation of safety measures will be achieved by maximizing the sum of the NRRG of all relevant safety measures under limited budgets, which is regarded as a knapsack problem. We applied the methodology to the aluminum dust explosion that occurred at Hayes Lemmerz International, Huntington, Indiana, US in October 2003. The result shows the efficacy and applicability of the proposed methodology for optimal risk reduction within a limited budget.

Item Details

Item Type:Refereed Article
Keywords:Bayesian network, dust explosions, optimization, risk analysis model, safety measures, Bayesian networks, budget control, civil defense, combinatorial optimization, dust, explosions, optimization, risk analysis, risk assessment, analysis models
Research Division:Engineering
Research Group:Engineering practice and education
Research Field:Risk engineering
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Khan, FI (Professor Faisal Khan)
ID Code:120609
Year Published:2015
Web of Science® Times Cited:25
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2017-08-29
Last Modified:2017-11-06

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