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| Investigation and assessment of environmental gamma radiation dose rate in surrounding area of Haiyang nuclear power plant |
| YANG Baolu, ZHOU Qiang, ZHANG Jing, LI Zeshu, LI Wenhong, TUO Fei |
| Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088 China |
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Abstract Objective Obtain the background data of environmental gamma radiation dose rate in the surrounding areas before the operation of Haiyang Nuclear Power Plant, and provide basis for evaluating the impact on the surrounding environment after the operation of the nuclear power plant. Methods The environmental gamma radiation dose rate was measured by vehicle radiation monitoring system (GR460) within 30 km of Haiyang Nuclear Power Pland and the resultant radiation dose exposure to local residents was also estimated. Results The air absorbed dose rate ranges from 39.6 to 109 nGy/h, and the average is 72.2 nGy/h. There is a significant difference between the mean values of gamma radiated air absorbed dose rates in the regions of 0~5 km, 5~10 km, 10~20 km and 20~30 km of nuclear power plant. The per capita annual effective dose of residents caused by gamma radiation dose rate in outdoor environment is 84.8 μSv. Conclusion The environmental gamma radiation dose rate in the surrounding areas of Haiyang Nuclear Power Plant and the resultant radiation dose exposure to the local residents was were within the normal background level in China.
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Received: 16 October 2018
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