An analysis of uncertainty assessment of external individual dose monitoring in 2017 in China
10.3760/cma.j.issn.0254-5098.2018.09.012
- VernacularTitle:2017年全国外照射个人剂量监测能力考核不确定度评定分析
- Author:
Xuan ZHANG
1
;
Wen GUO
;
Yanqiu DING
;
Aiying HU
;
Meijiao WANG
Author Information
1. 中国疾病预防控制中心辐射防护与核安全医学所 辐射防护与核应急中国疾病预防控制中心重点实验室
- Keywords:
Individual dose monitoring;
Intercomparison;
Uncertainty evaluation
- From:
Chinese Journal of Radiological Medicine and Protection
2018;38(9):700-704
- CountryChina
- Language:Chinese
-
Abstract:
Objective To standardize the uncertainty assessment work of nationwide radiological technical service institutions in respect to individual dose monitoring, to enhance the relevant capability and to ensure the quality of assessment. Methods The 2017 nationwide individual dose monitoring assessment for external exposure was carried out, and the problems found in uncertainty assessment in the submitted reports were analyzed and summarized. Results A total of 259 personal dose monitoring technical service institutions submitted their completed assessment reports and verification/calibration certificates. The accuracy rate of Class A uncertainty evaluation was 20.8％ and that of class B 55.2％ for calibration, 50.6％ for energy response, 25.5％ for angle ring and 51.4％ non-linearity response, respectively. The accuracy rate of effective digits of the estimated values and their uncertainty was 30.4％. Conclusions The ability of these individual dose monitoring institutions to assess uncertainties remains to be improved. It is recommended to enhance systematic training of the institutions with respect to uncertainty evaluation and to standardize the assessment reports, so as to improve the accuracy of the monitoring result and the quality of accuracy reporting.
