Research on risk evolution, prevention, and control of fire and explosion accidents in hydrogen refueling stations based on the AcciMap-FTA model

As a key link in the upstream of the hydrogen energy industry chain, a hydrogen refilling station is critical to ensure the safety and sustainable development of hydrogen energy, to deeply analyze the coupling relationship between the causative factors of fire and explosion accidents in hydrogen refilling station, and to put forward practical preventive measures and control risks. In this paper, firstly, based on the AcciMap model of accident causation mapping, 28 typical accident causative factors are identified in a hierarchical system, and the AcciMap model of fire and explosion accidents in hydrogen refueling stations is constructed; then, based on the FTA method, the minimum cut-set, the structure and the probabilistic importance of the fire and explosion accidents in hydrogen refueling stations are calculated to analyze the attributes of the system as a whole and the individual factors, and accordingly, from different perspectives. Determine the key causal factors of fire and explosion accidents in hydrogen refueling stations; finally, introduce the key causal factors into the AcciMap model for inference and diagnosis, and compare and analyze the most extensive causal chain of accidents. Practical research shows that the combination of AcciMap-FTA proposed in this paper can effectively portray the attribute characteristics of accident causation, explain the development path of causative factors, and put forward diversified risk prevention measures, which is a useful supplement to the AcciMap model in the field of quantitative analysis.