Establishment And Application Of Environmental Risk Assessment System For Oil-fired Power Plant

Environmental risk of oil-fired power plant was analyzed in this paper by using basic theory of fuzzy mathematics. In allusion to the characteristics of oil-fired power plant, environmental risk assessment system for oil-fired power plant was established.In allusion to the characteristics of oil-fired power plant, risk factors were compartmentalized into five parts according to the workshops: risk of Oil storage system, Boiler system, Ammonia-disemboguement system, Dust catcher system and FGD system. By summarizing the fruits of research on models for aftermaths of accidents, appropriate models were chosen to forecast aftermaths of the paroxysmal accidents of those workshops in oil-fired power plant quantificationally. All the risk causations were fuzzily synthesized by the fuzzy synthetic evaluation. Then, these evaluation vectors were turned into fuzzy scores which could represent risk degree. Through the fuzzy synthetic evaluation step by step, the total risk degree of environmental system and the risk degrees of risk factors were calculated. Based on the results, the primary risk factor and the primary risk causations were fixed on. Environmental risk assessment system for oil-fired power plant was established in the end.Taking Zhanjiang Olimulsion-fired Power Plant for example, environmental risk assessment system for oil-fired power plant was applied to analyze its environmental risk. In this assessment, aftermaths of the typical and paroxysmal accidents of those workshops were forecasted quantificationally. By using fuzzy synthetic evaluation, results showed that risk of Oil storage system was the primary risk factor of environmental system with the man-made factor as its primary risk causation. Excess compressive stress was the primary risk causation of Boiler system and Ammonia-disemboguement system. Abnormity of electrical and current voltage and agglomeration jam were the primary risk causations of Dust catcher system and FGD system respectively. Hereby, some preventive measures were proposed to guard against the accidents at the end of this paper.