Study On The Quantitative Risk Assessment Of Chemicalindustry Area

With the scale and the number of Chemical Industry Park increasing.The development of chemical industry park brings a lot of security problems to people's living environment.The development of chemical industry park has also brought the problems of economic development.Security issues have gradually become the focus of attention of mankind.Based on the chemical industry park to carry out risk analysis and quantitative risk assessment.Find corresponding safety measures.Reducing the probability of accident in Chemical Industry Park provides reference for safe production.The main research contents of this pape-rare as follow.(1)The basic principles of the establishment of evaluation index system are discussed.From the four aspects of enterprise planning and production,transportation,environmental factors and management factors,the risk assessment index system of chemical industry park was established.(2)The basic principle of analytic hierarchy process(AHP)is discussed.The construction judgment matrix and consistency checking process are analyzed.According to the establishment of the risk assessment index system of Chemical Industry Park,Analytic hierarchy process.The weight of each index in the risk assessment index system of chemical industry park is obtained.(3)The definition and characteristics of fault tree are analyzed,and the importance of structure and the formula of probability importance are discussed.In view of the deficiency of fault tree analysis method,Bayesian network is introduced,and the principle of transforming fault tree into Bayesian network is discussed.The method of cut set,diameter set and importance degree calculateon based on Bayesian network are analyzed.According to a chemical industrial park establishs chemical industry park fire and explosion accident tree.And turn it into Bayesian network of chemical park fire and explosion.(4)The damage criteria of fire and explosion accidents are analyzed,and the calculation methods for the consequences of jet fire,fireball and vapor cloud explosion are discussed.According to a chemical industrial park,the thermal radiation lethal radius of different materials and the radius of property damage,the lethal radius of explosion accident and the radius of property damage are obtained.(5)The steps of safety check list are analyzed.The key problems in the process of preparing safety check list are discussed,and the type of safety checklist is given.For a chemical industrial park,from the emergency resources to ensure daily routine monitoring,emergency rescue plan,communication ability,communication ability,matter disposal capacity,after summing up and recoveryability and compile an emergency rescue checklist to get the fraction and the security level of the chemical industry park of different examination content.