A Case Study on Environment Risk Assessment Methods of Coastal Petrochemical Project

With the advantages of good condition of port water, large environmental capacity, abundant transport capacity, low freight and modifiable tense situation of land use, the coastal region becomes the biggest petrochemical project region in the world. It is necessary to establish suitable environment risk assessment methods for coastal petrochemical projects so that we can keep away the environment from harm as well as minimize pollution to the environment in operation and after accident. In this research, a scientific nature and accuracy the coastal petrochemical projects’ environmental risk system of Quanzhou petrochemical project is constructed, as well as the assessment method through the instance analysis.This system contains 3 citerion layer indexes, 2 expanding layer indexes and 22 factor layer indexes, forming a multi-level and multi-factor model of structure. After building the index system, the combination of empowerment method of analytic hierarchy process and entropy weight method have been carried out, the indexs are modified and improved using expert consultation method. A linear weighted group legal is appled to valuate the factor weight of the index system and calculate the environmental risk level of the coastal petrochemical projects, as a result, the risk of the project could be determined. It could provide a reference for the coastal petrochemical projects’ environment protections: scientific location decision,environment management, risk prevention and control. It may reduce the impact of the accidents and prevent environmental risks by strengthening and perfecting the environmental risk management system combining with the sensitive degree of environmental factors.