Risk Evaluation And Consequence Simulation Of Oil Tank Leakage

As one of the storage tanks of petroleum industry, the most widely used storage device, The importance and status can not be ignored, The application also makes a large number of tanks whose security is worth further study contents. Large storage tanks with an extremely dangerous chemical and physical properties of petroleum products, In the event of a serious accident, Accidents will bring incalculable harm to the safety of human life and property safety, environment, etc. Researches in the field of tank leakage has a certain level, but the level of research in China’s western regions are still not perfect construction equipment such as tanks, daily management of personnel issues such as the lack of specification, In order to obtain oil tank spill hazards, fires caused by the scope of the leak, we use qualitative, quantitative approach to the oil tank leaks and fires were studied.This paper introduces the research status at home and abroad related to storage tanks leak,From a practical sense as a starting point,This paper describes the basic characteristics of the body of research, The risk characteristics of the use of statistical methods and structural failure modes are classified tanks, And analysis of the main effects of the accident situation after the occurrence of leakage tank; for fire incident caused by leaking storage tanks were statistically detailed classification. Through the investigation and analysis of mathematical models to determine the tank wall for storage tanks leak, flanges, valves leak, the local connection leaks tube radius mathematical model liquid pool fire, flame height, fire thermal radiation radius of influence is calculated; CFD technology application performance is analyzed in oil tank fire. Verification method using the actual case, based on the crude identification of hazardous and harmful factors on the function of each part to get tanks variation of parameters and characteristics of oil leakage through the mathematical model and Matlab software combination, And after the leakage of the liquid sump of the tank obtained by calculating radius of59.15m, when the heat flux to reach devastating injury time (37.5KW/m2), the scope of the fire reached32.56m, this distance is substantially reached the the distance between the tank and the occupied areas. When the heat flux value of25KW/m2(reach severity burns), the impact of distance reached39.88m, when the heat flux value of12.5KW/m2(reach mild degree burns), the impact of distance reached56.39m. Using CFD technology to fire tank fire occurred flowing depth simulation, and the introduction of the wind factor in the simulation process, come at a wind speed of10.8m/s case, the maximum temperature is higher than the fire flame flowing low wind speed conditions, and the extent of the fire source to heat the surrounding facilities will increase. Through the above calculation of the tank and research as well as qualitative and quantitative analysis of the accident type tanks to undertake a comprehensive assessment of the safety recommendations and proposed measures:To strengthen the management and maintenance of storage tanks equipment, prevention of natural lightning violations, controlling illegal behavior management, strengthen routine maintenance; Develop oil tank safety precautions, once anti-born spill, take remedial measures depending on the circumstances, the fifth chapter describes the detailed analysis and tank safety precautions for the normal operation of the storage tanks, daily management, consequences of the accident and to deal with countermeasures provide scientific advice.