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《Journal of Safety and Environment》 2008-02
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Discussion on the ways to identify the major hazard installations

SHI Li-chen,WEI Li-jun,LUO Ai-min,WU Zong-zhi(Institute of Hazardous Chemicals Safety,China Academy of Safety Science and Technology,Beijing 100029,China)  
The present article is to report our studies over the ways to identify the major hazard accidents that are likely to take place with the chemical and petrochemical installations.As has been reported,with more and more major accidents occurred in above said installations,the concept of major accident hazard began to appear in 1970s firstly in EEC and other western countries or regions with the purpose for effective prevention.China began to attach close attention to the control of such accidents in 1990s and the first national standard for controlling major hazard installation accidents came into force in 2000.Although the first standard plays an important role in securing the management and control of the above said installations,serious problems,particularly,those with the identification of major hazard installation accidents,remains unsolved.First of all,the definition of major hazard installations itself is not clear,with different people keeping different ideas as to what the so-called major hazard installation accidents mean to the same plant under this standard.Secondly,the standard fails to cover adequate or complete range and scope.Thirdly,the standard fails to specify the threshold quantities of hazardous materials reasonably with enough consideration of the definite properties of the materials and consequences that may lead to the major hazardous accidents.The standard has not even given to the ways for identifying major hazard installations of mixtures and solutions.Therefore,this paper feels the need to review the progress in this connection and regulations and standards to be clearly laid out.It also tries to discuss problems involving the regulations and methods as to identifying accidents.In addition,it has analyzed and compared the existing differences and gaps between China and some developed counties in this respect.The authors also consider that the definition of major hazards with the concept of the whole business area should be made more practical.Furthermore,the scope of major hazard installations should be extended to cover more extensive categories with threshold quantities of the hazardous materials clarified and reasonably justified.And in particular,specific standards should be drawn for the classification and categorization of major hazard accidents.
【Fund】: 国家“十一五”科技支撑项目(2006BAK01B02)
【CateGory Index】: X928
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