Analysis on individual dose reaching survey level of occupational external exposure in Jiangxi Province in 2018
10.13491/j.issn.1004-714X.2021.04.017
- VernacularTitle:2018年江西省职业外照射个人剂量达到调查水平分析
- Author:
Liying LIU
1
;
Ruokai ZHU
1
;
Ning ZHOU
1
;
Zhe WANG
1
;
Yishui CHEN
1
;
Yongquan LIU
1
Author Information
1. Jiangxi Institute of Occupational Disease Prevention, Nanchang 330006 China.
- Publication Type:RadiationSecurity/OriginalArticles
- Keywords:
Occupational External Exposure;
Personal Dose Monitoring;
Investigation Level;
Analysis
- From:
Chinese Journal of Radiological Health
2021;30(4):474-478
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the reasons why the routine monitoring of personal dose of occupational external exposure of some radiological workers in our province reached the investigation level in 2018, so as to provide technical support for the correct decision making of administrative departments. Methods The registration forms for monitoring and verifying the personal dose of occupational external exposure were issued to radiation workers whose periodic dose reached or exceeded 1.25 mSv/ cycle. Results A total of 102 person-times were sent out in 53 verification forms, and 95 person-times were collected in 47 copies. The recovery rate was 88.68%, and 7 person-times did not feedback the verification forms. There were 15 cases of actual exposure, accounting for 15.79%, including 5 cases of radiological diagnostic staff, who did not close the protective door when operating exposure. Among them, the other 80 cases, accouting for 84.21% didn't receive actual exposure. Conclusion The vast majority of radiological workers who reached the survey level didn't receive actual exposure. 5 person-time radiological diagnostic staff, during the work did not close the protective door, subjected to abnormal radiation. Interventional medicine, nuclear medicine and industrial mobile flaw detection workers are at higher risk of abnormal exposures during their work. The suspicious results of the questionnaires without feedback were all less than the annual dose limit and the requirements of audit management. We will strengthen supervision of radiation health protection, raise the awareness of radiation protection among radiation workers, and improve radiation protection management and protection conditions for radiation workers in interventional medicine, nuclear medicine and industrial mobile flaw detection furtherly.
