Investigation and evaluation of annual effective doses to radiation workers caused by indoor radon concentrations in underground workplaces of medical institutions
10.13491/j.issn.1004-714X.2025.04.004
- VernacularTitle:医疗机构地下工作场所室内氡浓度所致放射工作人员年有效剂量的调查与评价
- Author:
Guozhen ZHU
1
;
Meinan YAO
2
;
Jiayi MA
3
;
Yongzhong MA
4
,
5
;
Qiao MA
6
Author Information
1. Hunan Prevention and Treatment Institute for Occupational Disease, Changsha 410000, China.
2. Beijing Center for Disease Prevention and Control, Beijing 100013, China.
3. Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210028, China.
4. Beijing Center for Disease Prevention and Control, Beijing 100013, China
5. School of Public Health, Capital Medical University, Beijing 100069, China.
6. Sichuan Center for Disease Control and Prevention, Chengdu 610000, China.
- Publication Type:OriginalArticles
- Keywords:
Medical institution;
Underground workplace;
Indoor radon;
Radiation dose
- From:
Chinese Journal of Radiological Health
2025;34(4):489-493
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the annual effective doses to radiation workers caused by radon concentrations in the underground workplaces of medical institutions, and to provide a scientific basis for the prevention and control of indoor radon in underground places. Methods A typical sampling method was used to select 5-30 medical institutions in each of Hunan, Jiangxi, Guizhou, Hubei, and Sichuan provinces. A total of 66 monitoring points in 66 medical institutions were selected. The indoor radon concentrations in underground workplaces were measured cumulatively using CR-39 solid nuclear track detectors. The radiation dose to radiation workers was estimated according to the method outlined in the Requirements for control of indoor radon and its progeny (GB/T 16146—2015). The Kruskal-Wallis H test was used to compare the differences in indoor radon concentrations between different provinces. Results The average indoor radon concentration in the underground workplaces of 66 medical institutions was 69.8 Bq/m3, with the highest being 147.6 Bq/m3. The average indoor radon concentrations in the underground workplaces of medical institutions in Sichuan, Guizhou, Hubei, Jiangxi, and Hunan were 72.1, 83.2, 66.6, 88.4, and 61.5 Bq/m3, respectively. The annual effective doses to radiation workers caused by radon concentrations in underground workplaces were 0.57-0.83 mSv, with an average of 0.69 mSv. There was a significant difference in radon concentrations among provinces (P < 0.05). Conclusion The indoor radon concentrations and personnel exposure doses in the underground workplaces of monitored medical institutions comply with national control standards. However, continuous monitoring and necessary indoor radon prevention and control measures are still needed.
