大气氚释放剂量评价模式验证

Validation of dose assessment model for atmospheric tritium release

基于秦山核电厂2014—2016年气载流出物氚的排放数据,采用联合国原子辐射影响科学委员会(UNSCEAR)推荐的比活度模型评价了秦山核电基地氚所致公众辐射剂量。并与同期秦山核电基地周围环境氚监测数据评价公众辐射剂量结果进行比较。基于流出物排放的评价结果与基于环境监测数据的评价结果相差不大,在同一水平。推荐在进行气载氚所致公众辐射剂量评价时采用该比活度模型。

Based on the 2014-2016 emission data of tritium from Qinshan Nuclear Power Plant(QNPP),the specific activity model recommended by the United Nations Scientific Committee on the Effects of Atomic Radiation(UNSCEAR)was used to evaluate the tritium-induced radiation dose to the public who resides near Qinshan Nuclear Power Base.The results were compared with the tritium monitoring data around Qinshan Nuclear Power Base during the same time period.The evaluated results based on tritium effluent emissions were similar to those based on environmental monitoring data and were at the same level.It is recommended that the specific activity model should be used to evaluate the public radiation dose caused by airborne tritium.