Terrestrial gamma radiation level around Shidaowan nuclear power plant, China and influencing factors
10.13491/j.issn.1004-714X.2023.01.004
- VernacularTitle:石岛湾核电站周边地表γ辐射水平调查及影响因素研究
- Author:
Chenyang QI
1
;
Wei ZHANG
2
;
Xianpeng ZHANG
2
;
Yi LIU
2
;
Zhihui FENG
1
Author Information
1. School of Public Health, Shandong University, Jinan 250012 China.
2. Institute for Public Health Surveillance and Evaluation, Shandong Center for Disease Control and Prevention, Jinan 250014 China.
- Publication Type:Journal Article
- Keywords:
Terrestrial γ radiation;
Thermoluminescence measurement;
Dose rate;
Effective dose;
Nuclear power plant
- From:
Chinese Journal of Radiological Health
2023;32(1):15-20
- CountryChina
- Language:Chinese
-
Abstract:
Objective To monitor the cumulative terrestrial γ radiation dose around Shidaowan nuclear power plant, Shandong, China before operation, to analyze the dose levels and influencing factors, and to estimate the annual effective dose to local residents. Methods Fifty-six monitoring sites were selected within 30 km around the nuclear power plant. The environmental γ radiation dose was measured by the thermoluminescence dosimeter monitoring method. The γ radiation dose levels were investigated for 369 days in four monitoring periods (January 16 to April 14, April 15 to July 20, July 21 to October 21, 2021, and October 22, 2021 to January 20, 2022 for periods I to IV, respectively). Relations between γ radiation and monitoring time, altitude, distance from the nuclear power plant were analyzed, and the annual effective dose of terrestrial γ radiation to residents was estimated to reflect the background terrestrial γ radiation level in the area. Results The average values of terrestrial γ radiation dose rate in the four monitoring periods in the area were (76.196 ± 3.366), (81.773 ± 6.144), (93.554 ± 7.449), and (97.604 ± 9.396) nGy/h, respectively, and the terrestrial γ radiation dose rate in the whole year was (87.282 ± 6.589) nGy/h. The effective dose to residents was 0.428 mSv. The terrestrial γ radiation level was high from July 2021 to January 2022. There was no significant difference in the γ radiation dose rate at the monitoring sites with different distance from the nuclear power plant. No impact upon the terrestrial γ radiation dose by the altitude was observed in this study. Conclusion The terrestrial γ radiation level around Shidaowan nuclear power plant in 2021 was at the background level.
