Radiation level analysis of some non-medical institutions in Hangzhou
10.13491/j.issn.1004-714X.2021.01.013
- VernacularTitle:杭州市部分非医疗机构辐射水平分析
- Author:
Zhixin ZHAO
1
;
Qiang WANG
1
;
Chengjian CAO
1
;
Yong YANG
1
;
Haihua WANG
1
;
Hezheng ZHAI
2
,
3
Author Information
1. Hangzhou Hospital for the Prevention and Treatment of Occupational Disease, Hanghzou 310014 China.
2. Institute of Radiation Medicine, Chinese Academy of Medical Sciences
3. Tianjin University.
- Publication Type:RadiationSecurity/OriginalArticles
- Keywords:
Non-medical Institutions;
Radiation Level;
Radiation Protection
- From:
Chinese Journal of Radiological Health
2021;30(1):59-62
- CountryChina
- Language:Chinese
-
Abstract:
Objective The purpose of this study is to grasp the current situation of radiation protection in some non-medical institutions in Hangzhou, and to provide basis and reference for the relevant authorities departments to make the radioactive hazard factors monitoring plan for non-medical institutions. Methods The configuration of the personnel protective equipment and radiation level of radiation sources and radiation devices in 5 non-medical monitoring institutions in Hangzhou were investigated and analyzed by means of questionnaire survey and on-site detection. Results The radiation workers of 5 monitoring institutions have carried out personal dose monitoring, and their annual individual dose equivalent meets the requirements of relevant national standards. The ambient dose equivalent rates around the radiation source and radiation device room are lower than the minimum detection limit of the instrument. When the source is stored, the maximum ambient dose equivalent rates at 5 cm and 100 cm away from the external surface of the source container were 22.2 μSv/h and 2.0 μSv/h, respectively. When the source is in use, the maximum ambient dose equivalent rates at 5 cm and 100 cm away from the external surface of the source container were 44.3 μSv/h and 5.0 μSv/h, respectively. Conclusion Under normal operation, the radiation dose level of some non-medical monitoring institutions in Hangzhou is at a low level, while the ambient dose equivalent rates around the external surface of the source container is at a high level. Therefore, non-medical institutions should improve their awareness of radiation protection and strengthen radiation management.
