Modeling and performance analysis of gas leakage emergency disposal process in gas transmission station based on Stochastic Petri nets

•The emergency disposal process model of gas leakage accident was established.•Stochastic Petri nets and Markov chains were developed to analyze performance.•The triangular membership function and regional center method were employed.•Transition utilization rate and place busy probability were used...

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Bibliographic Details
Published in:Reliability engineering & system safety 2022-10, Vol.226, p.108708, Article 108708
Main Authors: Liu, Shuanglei, Li, Weijun, Gao, Peng, Sun, Yibo
Format: Article
Language:English
Subjects:
Emergencies
Emergency disposal process
Gas leakage
Gas transmission
Gas transmission station
Leakage
Linear equations
Markov chains
Modelling
Nets
Petri nets
Probability theory
Reliability engineering
Rescue operations
Risk management
Risk reduction
Stochastic petri nets
Triangular membership function
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Summary:•The emergency disposal process model of gas leakage accident was established.•Stochastic Petri nets and Markov chains were developed to analyze performance.•The triangular membership function and regional center method were employed.•Transition utilization rate and place busy probability were used for data analysis. Efficient emergency disposal on site after gas leakage is crucial to avoid accident escalatio and expansion. However, current performance analysis studies of emerency disposal process are insufficient due to the uncertainty of rescue time prediction. In this paper, we aimed to explore the integration of triangular membership and regional center method to SPN for the modeling and evaluation of gas leakage emergency rescue process in gas transmission station. The stochastic Petri nets model was established by considering the interrelation of each execution stage of emergency disposal. Considering the subjectivity of expert analysis, triangular membership function and regional center method were combined to obtain the values of firing delays. Then isomorphic Markov chain was built from the SPN model and the stability probability linear equations were obtained. By calculating the transition utilization rate and place busy probability, the critical places and transitions were obtained. The list of critical emergency disposal stages and actions was generated, based on which countermeasures were presented for the risk reduction of gas leakage emergency disposal process in gas transmission stations. [Display omitted]
ISSN:0951-8320
1879-0836
DOI:10.1016/j.ress.2022.108708