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A methodology based on Dijkstra's algorithm and mathematical programming for optimal evacuation in process plants in the event of major tank fires

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  • Khakzad, Nima

Abstract

Effective evacuation plans are essential to protecting workers in the event of major fires in process plants. However, despite some general guidelines, there is no specific methodology available for identification of such plans. In the present study, we have developed a methodology for identifying optimal evacuation strategies in the event of single and multiple tank fires. In this study, considering heat flux as the main cause of casualties in outdoor fires, the conventional relationship for calculating thermal dose was first modified to estimate the values of thermal dose more accurately. The Dijkstra's algorithm was then employed to identify the evacuation paths to safe spots. Due to the limited capacity of safe spots, mathematical programming was used to determine how many people should be allocated to each safe spot and via which evacuation path so as to minimize the risk of casualties. The developed methodology was demonstrated to outperform the ad hoc evacuation plans in minimizing the casualties while allowing the analyst to update the evacuation plans in accordance with the evolution of fire scenarios.

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  • Khakzad, Nima, 2023. "A methodology based on Dijkstra's algorithm and mathematical programming for optimal evacuation in process plants in the event of major tank fires," Reliability Engineering and System Safety, Elsevier, vol. 236(C).
  • Handle: RePEc:eee:reensy:v:236:y:2023:i:c:s0951832023002065
    DOI: 10.1016/j.ress.2023.109291
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    References listed on IDEAS

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    Cited by:

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    5. Khakzad, Nima, 2023. "A goal programming approach to multi-objective optimization of firefighting strategies in the event of domino effects," Reliability Engineering and System Safety, Elsevier, vol. 239(C).

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