The Electrostatic Quantitative Detection And Hazard Assessment Of Typical Industrial Explosion Sites

During petrochemical enterprises produce, process, handle, storage, transport of oil andgas products,it will be inevitably to arising the explosive mixture or fire hazard substances,and electrostatic discharge generate ignition source, could result in fire or explosion, domesticpetrochemical enterprises explosive areas have occurred electrostatic fire and explosion. Forpreventing effectively and controling static fire explosion, it is necessary to identificatingadvancely, evaluating, controling the presenced various petrochemical enterprises static firehazard by applying scientific and effective way. Currently, static for petrochemical enterprisesaccident research are mainly concentrated in the cause of the accident and accident preventionmeasures, but both risk factors and petrochemical enterprises static identification theory arenot mature, static fire and explosion risk assessment methods theoretical system has yet to beestablished. Baseing on hazard identification and risk assessment method theory, this papermainly research petrochemical enterprises static hazard detection and quantitative evaluationof the following four aspects:(I) Petrochemical enterprises electrostatic hazard identification and electrostatic fire andexplosion accident mechanism. Baseing static fire accidents condition, the paper analysisespetrochemical companies static electricity hazard sources and the potential presence of staticdischarge. Static analysis of the mechanism of explosion fire petrochemical companies,petrochemical companies seek to nurture the source of the accident, the accident found thatthe formation of the law and the driving force behind the development of the accident in orderto find the electrostatic control fire and explosion petrochemical enterprises coping strategies.To select the petrochemical enterprises electrostatic detection object from electrostatic hazardidentification, paper identificates specific electrostatic detection parameters and testingmethods.(II) Study on Petrochemical enterprise pipeline system electrostatic properties. Thischapter analysises pipeline static electrification mechanism and influencing factors, basing onestablished static risk factors identification method, analyzes three types electrostatic hazardsand possible electrostatic discharge form of pipeline systems, static electricity from the powersupply and piping that may occur, builds a multi-purpose pipeline system electrostatic characteristics research platform, select the pipeline static leakage current as measurementobject, studes the pipe static electricity impact of velocity,pipe diameter, pipe material, obtainsthe oil flow security rate calculations.(III) Enterprise-static fire and explosion hazard evaluation model building. Proposedevaluation system static fire explosion petrochemical companies, including the possibility ofan accident, the consequences of accidents, control and monitor the state to determine thestatic fire petrochemical enterprises to quantify the likelihood and consequences of theaccident explosion method. MLS evaluation method based on an improved buildenterprise-static fire and explosion risk assessment model petrochemicals. To preventelectrostatic accidents, proposed specific countermeasures, including engineering andtechnical measures, environmental control, security related static anti-static safety cultureaccident.(IV) The application of the static fire and explosion hazard evaluation in explosion sites.Taking a oil depot in Guangzhou Nansha Area for applied research object, this chapterquantitatively evaluates the oil depot electrostatic hazard and electrostatic management statusby application of fire and explosion hazard evaluation model, proposes improvementmeasures of the state and against the existence of risk factors and static management defect.