Radiation environment monitoring and analysis of exempted X-ray devices
10.13491/j.issn.1004-714X.2023.05.007
- VernacularTitle:豁免类X射线装置辐射环境监测与分析
- Author:
Jinfan ZHANG
1
;
Feng CHEN
2
;
Quanyi LIN
3
;
Jiangping FENG
1
Author Information
1. Guangdong Shenzhen Ecological Environmental Monitoring Centre Station, Shenzhen 518049 China.
2. Shenzhen Ecological Environment Bureau, Shenzhen 518049 China.
3. Shenzhen Urban Public Safety and Technology Institute Co., Ltd., Shenzhen 518046 China.
- Publication Type:OriginalArticles
- Keywords:
X-ray device;
Exemption management;
Ionizing radiation;
Inherent safety
- From:
Chinese Journal of Radiological Health
2023;32(5):511-516
- CountryChina
- Language:Chinese
-
Abstract:
Objective To propose specific suggestions for exemption management of X-ray devices applying for exemption management. Methods The weight analysis of influence of shielding thickness and tube voltage on the radiation dose leakage of low-energy X-ray devices was carried out through test analysis, and the radiation status of 50 X-ray devices applied for end-user exemption in Shenzhen, China was investigated. Results There was no significant correlation between the ambient dose equivalent rate and the tube voltage and tube current of the X-ray device. The ambient dose equivalent rate of 50 X-ray devices was 0.16-1.20 μSv/h. Among them, 8 X-ray devices had radiation dose leakage, that is, the ambient dose equivalent rate was greater than 0.36 μSv/h; the ambient dose equivalent rate of one X-ray device was 1.2 μSv/h, exceeding exemption management requirements. Conclusion Applications for exemption management and filing of X-ray devices should be treated differently, and their own shielding effect and inherent safety have a greater impact on radiation safety, which should be focused on.
