压水堆核电厂液态流出物中55Fe的排放与监测方法

Abstract

Abstract: This paper focuses on sources investigation of ⁵⁵Fe in liquid effluents from pressurized water reactors (PWRs) in nuclear power plants and relative analytical methods and provides some suggestions on development of ⁵⁵Fe monitoring in liquid effluents of nuclear power plants. The discharge amounts were statistically analyzed by extracting the data from public annual effluent reports of 41 US PWRs during 2005-2017 (total 871 reactor-years), which would help us to understand the necessity of ⁵⁵Fe monitoring in liquid effluents in discharge supervision of nuclear power plants. The statistical results showed that the electricity normalized discharge amounts (geometric averages) for each PWR mainly ranged from 5.18×10^-7 to 8.14×10^-5 GBq/GWh with an average of 1.52×10^-5 GBq/GWh, with above 12% of the total fission and activation radionuclides which ranked from the first to the forth. From a typical discharge volume of a Gigawatt scale PWR, the estimated discharge concentration of ⁵⁵Fe about 10.7 Bq/L would be deduced. Meanwhile, the analytical methods of ⁵⁵Fe were extensively investigated and the monitoring method standardization of ⁵⁵Fe in liquid effluents is suggested, especially for a rapid analytical method of chromatography separation and liquid scintillation measurement.

Key words: pressurized water reactor, nuclear power plant, liquid effluent, ⁵⁵Fe, monitoring

CLC Number:

TL75+1

SHA Xiangdong, HUANG Yanjun, ZENG Fan, SHANGGUAN Zhihong, JIANG Jing, WU Liansheng, CAO Zhonggang, CHEN Chaofeng. An investigation on discharge and analytical methods of ⁵⁵Fe in liquid effluents from PWRs of nuclear power plants[J].RADIATION PROTECTION, 2020, 40(5): 394-401.

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An investigation on discharge and analytical methods of ⁵⁵Fe in liquid effluents from PWRs of nuclear power plants

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An investigation on discharge and analytical methods of 55Fe in liquid effluents from PWRs of nuclear power plants

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An investigation on discharge and analytical methods of ⁵⁵Fe in liquid effluents from PWRs of nuclear power plants