Analysis Of Systematic Cause Of Pressure Vessel Based On Accident Investigation Report

As one of the eight major categories of special equipment,pressure vessels,with the improvement of my country's production level,account for an increasing proportion in all walks of life.After years of hard work,my country's safety production pressure vessel accident situation has improved,but there are still deficiencies.To this end,many scholars at home and abroad have studied the process and principles of the use of pressure vessels,and have also proposed many improvement measures,but most of these studies are limited to the analysis of the use stage of pressure vessels,and more attention is paid to pressure vessels How to do in the use phase can avoid accidents,but it ignores the research on other stages of the pressure vessel life cycle.Therefore,this article aims to conduct a systematic analysis of the entire life cycle of the pressure vessel,find out the stages that ultimately lead to the risk of an accident,and propose recommended measures to improve the safety of the system.Therefore,this paper decided to adopt the functional resonance analysis method(FRAM)after comparing various system analysis methods.The functional resonance analysis method is developed from the theory of "stochastic resonance" in physics.It is different from the previous system functional methods that focus on the causal model.In this method,the accident is considered to be the result of "emergence".Therefore,when analyzing the system,this method is more focused on considering the problem from the perspective of how the system can operate normally,and it can also be analyzed without decomposing the structure of the system.After studying the FRAM method and the characteristics of the pressure vessel life cycle system,it was decided to FRAM the pressure vessel life cycle system by relying on two special equipment related laws,the Special Equipment Safety Law and the Special Equipment Safety Supervision Regulations.The purpose of modeling is to construct a system function model diagram that can be analyzed for the pressure vessel life cycle system.Next,according to the constructed FRAM model diagram,combined with the accident investigation report issued by the official,the cause analysis of the explosionaccident of the 6.3 "Baoyuanfeng" 6.3 large pressure vessel was carried out,and the risk of the "Baoyuanfeng" accident occurred It is generated in the "installation" stage of the pressure vessel,and combined with the analysis results,the FRAM model of the pressure vessel life cycle system constructed before is revised.Then use the revised model to analyze the remaining nine pressure vessel accidents.According to the analysis results,the failure connections are counted to obtain common causes.The results show that in the pressure vessel life cycle system,the "installation" and "detection" stages are the weak links in the life cycle system.Finally,based on the analysis results,suggestions are made to strengthen the scientific inspection of the industrial layout of the enterprise and improve the enterprise safety production responsibility system,etc.,to prevent changes in other stages of the system life cycle from being propagated to the "use" stage,improve system safety,and strengthen pressure vessel Safe Production.