Results and analysis of national personal dose monitoring intercomparison in 2021

Abstract

Objective To improve radiation testing institutions’ ability and levels of personal dose monitoring for external exposure and standardize monitoring work.

Methods According to Testing Criteria of Personnel Dosimetry Performance for External Exposure (GBZ 207—2016), the intercomparison programme was made, the 2021 class-based personal dose monitoring intercomparison were organized by the National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention and provincial monitoring institutions.

Results A total of 150 institutions participated in the 2021 national intercomparison of personal dose monitoring capability. Of them, 143 (95.3%) passed the assessment, including 51 excellent institutions (excellent rate, 34.0%), and 7 (4.7%) failed to pass the assessments.

Conclusion The 2021 national personal dosimetry performance intercomparison showed great improvements in the pass rate and excellent rate compared with previous national assessments. However, still seven institutions failed to pass this assessment, including four institutions with class A qualifications. The testing institutions need to find out the reasons to increase their testing ability. This class-based intercomparison improved the point-to-plane relationship between the organizing and testing institutions, helping the organizing institution focus on improving the testing ability of provincial testing institutions and class A radiation health service institutions.

Abstract

摘要： 目的 提升放射卫生检测机构的外照射个人剂量监测能力和水平, 规范监测工作。 方法 根据《外照射个人剂 量系统性能检验规范》(GBZ 207—2016)制定比对方案, 中国疾病预防控制中心辐射防护与核安全医学所和各省级监 测机构分级组织 2021 年度个人剂量监测能力比对工作。 结果 2021 年参加国家级个人剂量监测能力比对的机构共 有 150 家。其中 143 家合格(含优秀 51 家), 合格率 95.3%(含优秀率 34.0%), 7 家不合格, 不合格率 4.7%。 结论 相 较于以往的全国性个人剂量能力考核, 2021 年国家级能力比对的合格率和优秀率有较大提高, 但仍有包括 4 家甲级 资质机构在内的 7 家机构结果不合格, 检测机构需要认真查找原因, 进一步提高检测能力。分级比对改善了组织机构 和检测机构之间“点对面”的关系, 有助于组织机构重点提升省级检测机构和甲级放射卫生技术服务机构的检测水平。