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《Nuclear Science and Engineering》 2016-03
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Activity Estimation of Noble Gases Released From Nuclear Power Plants

FANG Lan;LIU Xin-hua;ZHU Zhao-wen;JIANG Jing;Nuclear and Radiation Safety Center;CNNC Nuclear Power Operations Management Co.,Ltd;  
The activities of noble gases in airborne effluents released from normally operating nuclear power plants are generally lower than the corresponding detection limits.Thus the statistic report using the halves of the detection limits as the releases probably overestimates the radioactive levels of nuclides,which may be higher than that of the similar PWRs worldwide,and eventually weaken the rationality of the releases evaluation.Since the monitoring data of the released noble gases has been seldom publicly reported,their activity concentrations are theoretically calculated based on the primary coolant source terms,and the monitoring ability is evaluated by comparing the calculated results with the detection limits of both on-line monitoring systems and sampling measurement systems.Some suggestions are provided on the effluents monitoring and the release data statistics.
【Fund】: 大型先进压水堆核电站重大专项科研课题子课题11气态流出物监测取样代表性问题的研究(2011ZX06002-10)和子课题14CAP1400放射性废物管理系统工艺监测研究(2013ZX06002001)共同资助
【CateGory Index】: TM623
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