A mechanistic framework for the leakage risk reduction of mobile hydrogen refueling stations based on inherent safety concepts

Gao, Xiaoming and Chen, Guohua and Pu, Wei and Xiong, Caiyi (2024) A mechanistic framework for the leakage risk reduction of mobile hydrogen refueling stations based on inherent safety concepts. International Journal of Hydrogen Energy, 83. pp. 1370-1384. ISSN 0360-3199, DOI https://doi.org/10.1016/j.ijhydene.2024.08.176.

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Official URL: https://doi.org/10.1016/j.ijhydene.2024.08.176

Abstract

This study presents a mechanistic framework for assessing and mitigating hydrogen leakage risks in Mobile Hydrogen Refueling Stations (MHRS) based on inherent safety concepts. A bow-tie model is proposed to identify potential hazards, event pathways, and consequences. Subsequently, this model is mapped into Bayesian Networks (BN) to enable quantitative risk assessment. Fuzzy set theory is adopted to address the uncertainty of prior probabilities, using a Noisy-MAX model to optimize the BN conditional probabilities. To mitigate leakage risks, a dedicated inherently safer design checklist is developed to identify opportunities for incorporating inherent safety. A case study demonstrates that the leakage potentials decrease from 0.2600 to 0.1997, and the leakage consequences decrease by approximately 22%. This work presents a novel mechanism using inherent safety to reduce the hydrogen leakage risk of MHRS, which is useful for creating an inherently safer MHRS with fundamental and natural robustness against hydrogen leakage.

Item Type: Article
Funders: Basic and Applied Basic Research Foundation of Guangdong Province (2023B1515120024), National Natural Science Foundation of Guangdong Province (2024A1515011123)
Uncontrolled Keywords: Mobile hydrogen refueling stations; Hydrogen leakage; Inherent safety; Risk assessment; Fuzzy bayesian networks
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 07 Feb 2025 02:08
Last Modified: 07 Feb 2025 02:08
URI: http://eprints.um.edu.my/id/eprint/47522

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