Study On The Key Evidence Technology Of Storage Installation Fire In Chemical Industrial Parks

With the rapid development of petrochemical industry, the number of fire accident in chemical industry parks is increasing, which is likely to cause serious casualties and property losses. Numerous past fatal accidents have testified that the fire accidents are highly correlated with the storage of dangerous chemicals, so is necessary to investigate into Storage Installation Fire in Chemical Industrial Parks. Material evidence technology is an important approach to achieve the purpose of accident investigation. At present, the evidence of fire cause investigation is weak and lack of credibility in our country. The study of material evidence technology of chemical storage device can help accurately and quickly analyze the accident cause and provide effective guidance for the prevention of similar accidents. Some researches have studied evidence of fire investigation at home and abroad, but most of them focus on the qualitative analysis of fire accidents, which are not enough to identify the origin of fire. The project aims at their own characteristics of chemical storage fire, which are different form building fire and forest fire. Major study carried out in the following areas:Firstly, fire statistics of chemical storage device is made, and the characterization and mechanism of fire evidence of chemical storage device is studied, then the present characterization system of fire evidence of chemical storage device is gained, which can provide quantitative evidence to infer the temperature and time of fire.Secondly, According to the characteristics of fire and heat disaster mechanism of chemical storage device, the varying disciplinarians of mechanical performances in different testing temperature were gained, and the decision laws to infer fire point were given.Thirdly, According to the characteristics of fire make and heat disaster mechanism of chemical storage device, the varying disciplinarians of metallograhical performances in different testing temperature were gained, which can identify for investigation conclutions.Fourthly, according to the mechanical performances and metallograhical performances in different testing temperature, in addition to the fire characteristics, equations of mechanism between fire temperature as well as exposure time were gained. The study conclutions will offer the decision basis to fire point after the accident. Rely on above research, the establishment of accident analysis of fire evidence of chemical storage device characterization system, obtain the hardness, tensile strength, yield strength, elongation after fracture and grain size variation of chemical storage device subjected to different fire. Base on the series of relationship curves, the location, temperature and time of fire can be judged according to the changes of mechanical properties and microstructure of chemical storage device, which can provide scientific support to determine the fire spread direction, fire point and fire reason.