Development of a risk assessment approach by combining SPA-fuzzy method with Petri-net

Journal article (2024)

Authors

Jianfeng Zhou Guangdong University of Technology
G.L.L.M.E. Reniers Safety and Security Science - TPM , Katholieke Universiteit Leuven, Universiteit Antwerpen
Research Group
Safety and Security Science (TPM) (TU Delft)
Risk assessment Process industry Weighted fuzzy Petri-net Multi-factor assessment
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Published Date

2024

Language

English

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Faculty

Technology, Policy and Management

Department

Values Technology and Innovation

Research Group

Safety and Security Science

Abstract

Risk assessment can reveal the level of a safety situation which can be very important info for company safety management. Considering the multiple factors in risk assessment of a system and the vagueness nature of many factors, and using the benefits of the Petri-net in modeling and reasoning, a weighted fuzzy Petri-net (WFPN) based risk assessment approach which combines WFPN with the SPA-fuzzy method is proposed in this paper. The SPA-fuzzy method is utilized to establish the membership functions for fuzzy assessment, taking its advantage in comparing identity, contrary and discrepancy features of two different sets. In this study, the WFPN is redefined to model relationships between assessment factors, and the matrix-based fuzzy reasoning algorithm is provided to assess the factors in parallel. The application of the proposed risk assessment approach is illustrated by case studies: the risk assessment of a chemical storage tank area and the ignition accident assessment of hydrogen refueling stations.