Analysis on Radiation Levels Around Fangchenggang Nuclear Power Plant From 2018 to 2023
This study conducted y-radiation cumulative dose monitoring and instantaneous monitoring of y-radiation air absorption dose rates at 31 monitoring locations around the Fangchenggang nuclear power plant,analyzing the radiation level monitoring results to grasp the long-term changes in terres-trial radiation levels around the nuclear power plant.The results show that from 2018 to 2023,the environmental y-radiation cumulative dose rate monitoring values around the Fangchenggang nuclear power plant ranged from 62.5 to 141.3 nGy/h,with an average value of 99.1 nGy/h;the instantane-ous dose rates ranged from 55.0 to 119.5 nGy/h,with an average value of 93.7 nGy/h.The terrestri-al environmental radiation levels around the plant remained consistent before and after the commercial operation of its three units,with both γ-radiation cumulative dose rates and instantaneous dose rates maintained at normal levels,indicating that the emission of airborne effluents during the operation of the nuclear power did not impact the radiation levels in the surrounding environment.There was sig-nificant variation in the y-radiation cumulative dose rates at different monitoring points,with a tend-ency for higher levels in winter and lower in summer,suggesting that y-radiation cumulative dose rates are greatly influenced by environmental factors.
cumulative dose rateinstantaneous dose ratenuclear power plantradiation levelair-borne effluentsenvironmental factors
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