Study And Application Of Environmental Risk Assessment For Chemical Industry Region

There are some environmental risks such as fire, blast, toxic leakage in this industry because high temperature and pressure must be applied during the producing process, and its products have characters of combustibleness, explosiveness and high toxicity, also the potential risks are caused by transporting and storing huge sum of those products, so environmental risk assessments of chemical projects are very important. More and more chemical industry regions which making up of chemical projects are established around cities and towns. Environment around these cities and towns has been influenced much, but the environmental risk assessments aren't good enough, which make the assessments results are not scientific any more.It is the right time to launch environmental risk assessment in chemical industry region and establish risk management system.Basing on related researches home and abroad, this paper applies the principle of combining environmental risk assessment with risk management to discuss the methods of establishing environmental risk management system, and also takes Yu-shen Chemical Industry Region as a example to analyze environmental risk and put forward corresponding methods. The main conclusions of this paper are listed as follow,(1) On the basis of researches home and abroad, this paper first summarize the relationship between risk assessment and other assessments and celect a whole set of standards and methods, then sets up a system of environmental risk management.(2 ) Basing on constituents identify, this paper enlarges the extent to identify impact of environmental risk by setting up a system which contains three different levels of lethality, health damage, and health impact to classify environmental risks.(3) There are accident risks in produce operating which may bring about serious consequences, and because the level of consequences related to the risk value which depends on surroundings, so related factors which influence accidents and safe distance which is measured by lethal radius must be considered thoughtfully when urban planning and choosing an appropriate site for chemical industry regions.(4) Tank fire, explosion of the tank and the surrounding shock wave device on the existence of the potential risks, so the tank fire, explosion risk assessments have a good reference on the layout of the units.