Study On Risk Assessment Of Transporting Dangerous Chemicals In The Headwater Area Of The Huangpu River And Environment Management

Nowadays, the conflict between urban development and drinking water source protection gradually revealed due to the winged urbanization process. For the past few years, the domestic public reported a series of major water pollution accidents by dangerous chemicals, which deepened people’s intuitive understanding of the sudden pollution accidents by dangerous chemicals, that city water source being under the threat of the sudden dangerous chemical pollution has become an indisputable fact.The upstream of Huangpu River has the characteristics of openness. It takes the responsibility of water supply, as well as takes into account the shipping, tourism, irrigation, sewage and other functions. While the ships which load dangerous chemicals cross the water source, it’s no doubt that it will strike the safety of the water source. Therefore, this article reveals practical significance starting from the point of water source safety, meanwhile conducting a comprehensive in-depth discussion on the shipping species, carrying capacity and navigation path of transporting dangerous chemicals in the upstream of Huangpu River.This article mainly depends on the5th sub-topic named Research and Assessment on flowing risk source of the Huangpu River upstream drinking water reserves, based on the project of Shanghai Environment Protection Bureau that study on environment risk control of Shanghai drinking water source and countermeasures. It reviews and combs relevant researches at home and abroad, furthermore focuses on water source pollution accidents and laws or regulations on dangerous chemicals management.For the sudden pollution accidents of dangerous chemicals in the upstream water source of Huangpu River, the author conducted field researches by recording ship traffic of transporting dangerous chemicals in the upstream water source of Huangpu River through telescope observation, taking photos, manual records, confirmed that ships transporting dangerous chemicals did cross the water source and meanwhile observed the sign of these ships was a B-shaped flag. In order to make up for the limitations of long-distance observation, the author conducted an investigation concerning transporting dangerous chemicals among all the maritime stations of the inland Huangpu River, to acquire a full-depth exploration on shipping chemicals species, carrying capacity, and paths in the upstream of Huangpu River. Finally, the author came to the conclusion that there were97ships transporting dangerous goods crossing the headwater reserve of the Huangpu River within one month, and the97ships sailed in8routes, and among the8routes Jinwei maritime station, the busiest, was58ships per month. At the meantime, the author got it that the chemicals ships carrying were more than oil, and the largest transportation of oil was diesel fuel and gasoline, while the chemicals transportation was liquid caustic soda and hydrochloric acid.After acquiring the data of shipping chemicals species, carrying capacity, and paths in the upstream of Huangpu River, this article improves on the basis of traditional fault tree analysis, brings criticality analysis that impacts water source into fault tree, find the minimum cut sets and structure importance, analyze that the largest impact factor is traffic density, and calculate the risk characterization values of the8routes. At last, this article constructs the mesh framework diagram of shipping dangerous chemicals in the upstream of Huangpu River, to present shipping chemicals species, carrying capacity, paths, and risk characterization values in the upstream of Huangpu River more clearly, so as to provide a more visualized way to know about the risk shipping dangerous goods in the upstream of Huangpu River, and put forward risk reduction countermeasures for managing dangerous chemicals in water source based on field researches, questionnaire surveys and risk assessment.