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针对辐射剂量计算的不确定性,运用放射性核素浓度计算模式和公众个人照射剂量计算模式,计算了我国某核电厂正常运行下某子区代表居民液态途径的辐射剂量,分析了公众液态途径辐射剂量对核素悬浮物吸附分配系数的响应。结果表明:当核素~(60)Co和~(137)Cs的悬浮物吸附分配系数降低一个数量级时或升高一个数量级时,岸边沉积外照射剂量响应较为明显。特别是~(137)Cs,其悬浮物吸附分配系数降低或升高一个数量级,该核素岸边沉积剂量贡献占其液态途径剂量比值和占总岸边沉积剂量比值都有明显变化。
In view of the uncertainty of radiation dose calculation, using the radionuclide concentration calculation model and the public personal radiation dose calculation model, the radiation dose of liquid channels in a sub-region under normal operation of a nuclear power plant in China is calculated. Response of Dose to Absorption Partition Coefficients of Nuclides. The results show that when the partition coefficient of suspended matter of radionuclide ~ (60) Co and ~ (137) Cs decreases by an order of magnitude or increases by one order of magnitude, the external deposition dose response of sediment is more obvious. In particular, the adsorption and distribution coefficients of ~ (137) Cs decreased or increased by an order of magnitude, and the contributions of sediment dosages to the liquid path and the ratios of sediment dosages to the total shore had significant changes.