Petrochemical industry complex production processes, equipment variety, is a more complex process, highly technical industries. As used in the production process of raw materials, semi-finished and finished products as well as a large variety of support materials are flammable and explosive substances, can easily lead to fires and explosions, and the fire is not easy when the fierce fire fight in the past 20 years,vegetable oil plants industry very rapidly, which caused a major fire and explosion accidents have also oil equipments. For example: in 1973 and 1974 occurred in Japan's oil conglomerate continuous fire and explosion accident not only caused heavy casualties and property losses, but also the serious pollution of the surrounding waters.