华龙一号核电厂公众辐射剂量优化设计目标值研究

基于我国新建三代压水堆核电机组华龙一号运行状态下的流出物设计与现实排放源项,结合机型的排放特点、沿海与内陆厂址的不同环境和气象等条件,对新建核电厂公众剂量优化设计目标值进行了研究。研究结果表明,在我国华龙一号的设计方案下,对于滨海厂址条件所能够达到的公众剂量优化设计目标值可以达到与欧美国家体系相当的水平。但由于厂址环境条件的差异,对内陆核电厂还需要结合工艺系统的改进开展进一步深入研究工作。对流出物中氚和C-14的排放还需要进一步开展经验反馈积累,在此基础上给出更符合未来运行状态的辐射剂量评价结果。本研究还对华龙一号后续的排放源项和评价方法等方面给出了建议,对进一步加强华龙一号的环境友好性和先进性具有积极作用。

Optimization study on the design objective of public radiationdose for HPR1000 nuclear power plants

An optimization study of design objective of public dose for new-built NPPs is described based on the design and actual release source terms of the new-built third generation HPR1000 PWRs in China at operational state,in consideration of the release characteristics of reactors and various environmental and meteorological conditions at coastal and inland sites. The results show that the optimum design objective of public doses achieved by HPR1000 for coastal site conditions is comparable to that set out by regulatory bodies of Europe and USA. Due to different environmental conditions, the optimization design objective for inland sites should be further studied based on the optimization of radioactive waste management system. For tritium and C-14 release source terms, more operational feedback data should be collected and analyzed to make the environmental impact assessment results more acceptable. Moreover, suggestions on release source terms follow-up and assessment methodology of HPR1000 are put forward. They will play an active role in enhancing the environmental friendliness and advancement of HPR1000.