Research On Nuclear Power Plant Fire Risk Assessment And Fire Risk Control

With the rapid development of our country’s economy,the country’s power consumption has increased.In order to implement a low-carbon and environmentally-friendly energy transition policy,the nuclear power industry has ushered in vigorous development in recent years.Our country has already commercialized and many nuclear power plants are being constructed.Nuclear power plants are of special construction and nature.Once a fire occurs,the consequences and losses are very serious.Therefore,a scientific assessment and analysis of the fire risk of nuclear power plants is carried out,and targeted measures for the prevention and control of fire risks in nuclear power plants are proposed to minimize the probability of fires in nuclear power plants and to minimize the losses after fires in nuclear power plants.It has important theoretical value and practical significance.This article applies system safety theory,mathematical statistics theory,and risk analysis theory.First,it analyzes the danger sources of nuclear power plant fires.It establishes a nuclear power plant fire risk assessment model to carry out a fuzzy evaluation of nuclear power plant fire risks.It uses fuzzy accident tree analysis to characterize Quantitative analysis explores the impact of major risk factors of nuclear power plant fires on the occurrence of nuclear power plant fires;proposes nuclear power plant fire risk prevention recommendations and risk management and control measures.(1)According to the characteristics of nuclear power plant fire risk and the unique design and construction of nuclear power plant,this paper,through the method of fire hazard classification and fire hazard identification,identifies and analyzes the fire hazard of a nuclear power plant from two aspects: the first type of fire hazard and the second type of fire hazard.(2)Based on the results of hazard source identification,this paper establishes a scientific and operable three-level indicator system for fire risk assessment of nuclear power plants through preliminary screening of indicators.Through the improved analytic hierarchy process,the weights of indicators at all levels are determined step by step.Establish a nuclear power fire risk assessment model,use fuzzy comprehensive evaluation method to evaluate a nuclear power plant and fire risk,reflect the actual fire safety status of the nuclear power plant,and provide a basis for nuclear power companies and fire management departments on nuclear power plant fire safety management and fire supervision.(3)Establish a fire accident tree for a nuclear power plant,and use a combination of fuzzy theory and accident tree to conduct a quantitative analysis of a nuclear power plant to obtain the path and probability of a nuclear power plant fire accident;calculate the fuzzy importance of the major risk factors of a nuclear power plant Through the ranking of the ambiguity of each basic event,the importance of fire risk prevention and control measures for nuclear power plants is obtained,which provides a new idea for nuclear power plant fire risk assessment.(4)Combining the fire safety evaluation level of a nuclear power plant and the importance of the major fire risk factors obtained in the foregoing,this paper proposes the pertinence of nuclear power plant fire risk management from the aspects of reducing the probability of a nuclear power plant fire and reducing losses after a fire Improvement measures and guidance suggestions.