2015-2017年南京市部分放射工作人员个人剂量监测异常结果分析

目的 对2015-2017年南京市疾病预防控制中心监测的放射工作人员个人剂量数据中的异常情况进行总结分析。方法 采用热释光法对个人剂量计进行检测。单次监测结果超过1.25 mSv时，使用《职业外照射个人监测剂量核查登记表》进行异常剂量调查，在EXCEL中对异常剂量及其原因进行汇总分析。结果 2015-2017年本中心监测的个人剂量异常数据共计166人次，大部分异常剂量在5.00 mSv以下（72.29%），导致剂量异常的主要原因有剂量计遗留于放射工作场所内、佩戴过期剂量计、佩戴剂量计自身接受放射性检查，占异常剂量总数的75.90%。结论 加强放射防护知识培训，指导放射工作人员正确规范佩戴和使用个人剂量计，是下一步工作的重点。

Analysis of abnormal results of personal dose monitoring for some radiation workers in Nanjing from 2015 to 2017

Objective To analyze the abnormal data in personal dose monitoring of radiation workers in Nanjing Municipal Center for Disease Control and Prevention from 2015 to 2017. Methods Thermoluminescence measuring method was used to detect personal dosimeters. When the single monitoring result exceededs 1.25 mSv, the "Dose verification registration form for individual monitoring of occupational external exposure" was issued. The abnormal dose and its causes were aggregated and analyzed by excel. Results One hundred and sixty-six cases of abnormal doses of individuals were recorded from 2015 to 2017 in Nanjing, most of which were below 5mSv. The main reasons for the abnormal dose included that the dosimeter left in the radiation workplace, wearing the expired dosimeter, and wearing a dosimeter to receive radiation examination, accounting for 75.90% of the total abnormal dose. Conclusion Strengthening the training of radiation protection knowledge and instructing radiation workers to correctly wear and using the personal dosimeters is the priority areas of our work.