2015—2019年北京市通州区放射工作人员个人剂量监测异常结果分析

目的分析北京市通州区放射工作人员个人剂量监测异常结果,并提出相应的改进措施。方法采用调查表的方式,对出现异常剂量结果的放射工作人员进行现场调查。结果 2015—2019年北京市通州区共计12 595人次放射工作人员个人剂量监测结果中,23人次异常结果。出现监测异常结果的主要工种为医学应用中的诊断放射学,占比69.60%。有17人次的剂量结果在1.25～5 mSv,占比73.90%。结论北京市通州区放射工作人员异常剂量结果均为非职业照射剂量值,主要原因是剂量计曾留置于工作场所。进一步加强对放射工作人员的教育培训,完善单位放射防护管理制度和严格监督检查是解决问题的关键。

An analysis of the abnormal results of individual dose monitoring for radiation workers in Tongzhou District,Beijing, China, 2015-2019

Objective To analyze the abnormal results of individual dose monitoring for radiation workers in Tongzhou District, Beijing, China, and to propose corresponding improvement measures. Methods Questionnaires were used to investigate the radiation workers who had abnormal dose monitoring results. Results In 2015—2019, among the 12 595 individual dose monitoring results for radiation workers in Tongzhou District, 23 were abnormal. The main type of work with abnormal monitoring results was medical diagnostic radiographer (69.60%). A total of 17 (73.90%) radiation workers had an exposure dose ranging from 1.25 mSv to 5 mSv. Conclusion The abnormal dose results were all from non-occupational exposure, mainly due to the dosimeter left in the workplace. The key to solving the problem is to further strengthen the education and training for radiation workers, to improve the institutional radiation protection management, and to supervise and inspect the relevant work strictly.