The Optimized Operation And Risk Assessment Research Of Crude Oil Tank-washing For Modern Oil Tanker

This paper creatively solved two problems in oil tanker transportation: the optimized economic performance of crude oil tank-washing and the risk assessment of the explosion and fire in oil tanker transportation accidents.In this paper, a breakthrough was made at the exploration of the mechanisms and rules of crude oil tank-washing of solution by adopting scientific and experimental methods. Combined with the existing prevalent jet pressure washing theory and the present optimization theoretical technology, the tank-washing economic optimization objective was set up based on time-energy objective. By variable weight Pareto GA, the author solved the optimization problem of the nonlinear double-target of tank-washing time-energy objective in this paper and obtained the optimum temperature of different oil products' handling operation and pressure optimization solution in the state of inside-surface of oil-tanker contamination.Meanwhile, the author studied the human, mechanic and environmental factors thoroughly which influence the explosion and fire accident during the operation of the crude oil tank-washing. Combined with the present firm and ripe national "8th five-year plan" science and technology in terms of key program "the identification and evaluation technology study of the inflammable, explosive and toxic major source of danger" and set up the integrated evaluation system of explosion and fire accident in the process of the crude oil tank-washing operation. The research results are obtained such as the risk rank, risk-control level, the loss of treasure and the region with explosion and fire and so on. In addition, the assessment software is developed which is used to instruct the practice production by implementing programming language of Visual Basic.