摘要
目的规范全国放射卫生技术服务机构的外照射个人剂量监测不确定度评定工作，提高不确定度评定能力和水平，确保评定质量。方法开展2017年全国外照射个人剂量能力考核工作，对其考核报告中不确定度评定存在的问题进行分析总结。结果提交完整考核报告及检定／校准证书机构259家，A类不确定度评定正确率为20．8％，校准、能量响应、角度响应、非线性响应B类不确定度评定正确率分别为55．2％、50．6％、25．5％、51．4％。被测量估计值及其不确定度有效位数表述正确率为34．0％。结论关于不确定度评定方面检测机构的能力还有待提高，建议加大对检测机构不确定度评定的系统化培训力度，规范考核报告表述．从而提高测量结果报告的水平。
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.
作者
张璇
郭文
丁艳秋
胡爱英
王美娇
Zhang Xuan;Guo Wen;Ding Yanqiu;Hu Aiying;Wang Meijiao(Key Laboratory of Radiological Protection and Nuclear Emergency,China CDC,National Institute for Radiological Protection,Chinese Center for Disease Control and Prevention,Beijing 100088,China)
出处
《中华放射医学与防护杂志》
CAS
CSCD
北大核心
2018年第9期700-704,共5页
Chinese Journal of Radiological Medicine and Protection
关键词
个人剂量监测
比对
不确定度评定
Individual dose monitoring
Intereomparison
Uncertainty evaluation
