核电厂流出物排放控制值研究

An investigation of the authorized release limits of radioactive effluent from nuclear power plant

排放量控制是我国核电厂环境辐射防护和流出物排放管理的重要内容。通过对比国内外压水堆核电厂流出物排放量水平,分析了我国现行标准中排放控制值对国外同类核电厂流出物排放量的包络率,同时与法国流出物排放控制值进行了比较。结果表明,除流出物中^(3)H、^(14)C外,现有标准控制值基本上可以包络国外核电厂统计排放量,且具有较大的余量。在目前的流出物排放管理水平下,现行标准中规定的排放量控制值仍是适宜的,其中对于^(3)H、^(14)C外的其他控制指标仍有很大的优化空间。

Emission control plays a key role in environmental radiation protection and effluent management for the operator of nuclear power plants(NPPs)and the authorities.In this paper,the effluent emission levels of pressurized water reactor(PWR)NPPs at home and abroad,the contain rate of the emission control value stipulated in GB 6249—2011 were investigated for the reported release amount,and the regulated values were compared with that in France.It was shown that,except for^(3)H and^(14)C in the effluent,the existing regulatedemission limits could basically contain the statistical emissions of foreign nuclear power plants with a much large controllable margin.Under the current effluent emission management level,a suitable,and much controllable margin could be used for optimization for the limits except for^(3)H and^(14)C.