The Hunan Zhuzhou Longmen Nuclear Power Plant On The Surrounding Environment Affect The Preliminary Study And Evaluation

Compared to thermal power, nuclear power has the competitive advantage in security, economic and environmental protection. Regarding using nuclear power to replace coal-fired power is ripe, the construction of nuclear power should be speed up, especially in the load center of Chang-zhu-tan area. It is a strategic choice of Hunan energy construction. Longmen site is located in Taihu Township, Zhuzhou City, Zhuzhou County, Hunan Province, which is near the Chang-Zhu-tan load center. The site condition is extremely advantageous.Longmen nuclear power site was selected in this paper as the research object for inland nuclear power site, and the research is focused on the site selection phase of the environmental influence assessment studies. At the beginning of the paper is a brief description of the environmental evaluation criteria of the site and selection of evaluation methods, formulas. Then based on the collated information and analysis, an evaluation on the site conditions and the external environment of Longmen site such as the site population distribution, industry, transport and military facilities, the potential external man-made events, external natural conditions, atmospheric dispersion conditions, the water dispersion conditions is delivered. In the following research, the gantry surrounding environmental impact of the site were analyzed and calculated (in both normal and accidental operation status). Finally, the full text of the research results obtained is summarized, and the further research directions are advised.According to the calculation, in the area of a radius of 0.5km of Longmen site, the maximum effective dose of the annual emissions of radioactive substances for an individual (adults) is 3.73 x 10-2-mSv/a, which meets the national standard GB6249-86.In the condition of maximum credible accident of the nuclear power plant, in the area of a radius of 0.9km of Longmen site, the maximum effective dose and thyroid equivalent dose received by any individual (adult) 8h after the accident, as well as the collective effective dose equivalent and collective thyroid doses for public groups in a area of a radius of 80km range within 30 days after the accident, meet the national standard GB6249-86 requirements. It indicates that the reasonable non-residential area boundary of Longmen site developed non-resident is 0.9km, and it meets the national standard GB6249-86 requirements.After comprehensive consideration, subversive insurmountable factor which may attract the safety of Longmen site dose not exist. The influence on the surrounding environment of the nuclear power generating units built on site is acceptable in any conditions.Therefore, Longmen site Datang Huayin can be used as a candidate for nuclear power project site, and it meets the requirement of building four million kilowatt-class pressurized water reactor nuclear power plant.In this paper, the characteristics of inland nuclear power site is analyzed, and based on which a deeply research on the Longmen nuclear power site environmental impact assessment is conducted. It has great practical value. It can not only solve the related issues on the environmental impact assessment of Longmen nuclear power projects, but also provides strategies for the rational planning and management of Longmen site. The research also provides a scientific basis on environmental planning, pollution, meteorological observation and environmental radioactivity monitoring for Longmen site program.