The petrochemicals industry has evolved out of oil and gas processing by adding value to low value by-products, which have limited use in the fuels industry. The industry now produces a remarkable range of useful products, including plastics, synthetic rubber, solvents, fertilisers, pharmaceuticals, additives, explosives and adhesives. These materials have important applications in almost all areas of modern society. The production process includes to operates into hazardous environment and to deal with dangerous products. When problems occur, these industries have a challenge to predict or minimize the impact for real catastrophe.