三代压水堆内陆厂址放射性流出物排放问题及改进建议

Abstract

Abstract: Due to the limited capacity of receiving water in inland plant site, a key issue of the inland nuclear power plant is the discharge of low-level liquid radwaste from inland NPPs. Through comparative analysis of the liquid effluent from the inland third-generation PWR and the requirements of the regulations and standards, it was found that the radioactivity (except tritium and ¹⁴C) in liquid and tritium concentration in water at 1 km downstream of plant outlet could not meet the requirements of the inland site. Therefore it is recommended to add chemical flocculation, ion exchange bed and reverse osmosis device to meet the requirement of 100 Bq/L. Discharge control has to be adjusted to fulfill national standards, which can meet the tritium discharge needs of two units, in order that the tritium concentration at 1 km downstream is less than 71 Bq/L. The tritium discharge of multiple units is recommended to use WD+CECE to achieve the purpose of separating tritium.

Key words: third-generation PWR, liquid effluent, discharge, tritium, inland

CLC Number:

TL75

LIU Hongkun, DONG Liang, LIU Yan, TANG Hui. Issues and improvements of liquid effluents from inland third-generation PWR site[J].RADIATION PROTECTION, 2021, 41(2): 174-180.

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Issues and improvements of liquid effluents from inland third-generation PWR site

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