2016-2020年山东省部分放射工作人员职业性外照射个人剂量监测结果分析

Analysis of individual dose monitoring results for radiation workers in Shandong province from 2016 to 2020

目的总结山东省部分放射工作人员个人剂量监测情况,分析其剂量变化趋势,为放射工作人员健康管理提供科学依据。方法按照《职业性外照射个人监测规范》《外照射个人剂量系统性能检测规范》的相关要求进行实验检测和质量控制,对山东省所辖16市疾病预防控制中心监测的全部放射工作人员职业性外照射个人剂量监测的结果,采用SPSS 23.0软件进行回顾性分析。结果本次共调查25523人,人均年有效剂量为0.28 mSv,不同年份放射工作人员人均年有效剂量之间差异有统计学意义(H=2815.91,P<0.001),人均年有效剂量总体呈先升后降趋势。医学应用中核医学放射工作人员人均年有效剂量最高,为0.55 mSv,医学应用中不同职业类别放射工作人员人均年有效剂量之间差异有统计学意义(H=310.37,P<0.001);工业应用中测井放射工作人员人均年有效剂量最高,为0.37 mSv,工业应用中不同职业类别放射工作人员人均年有效剂量之间差异有统计学意义(H=448.07,P<0.001)。医学应用放射工作人员人均年有效剂量高于工业应用中放射工作人员,差异有统计学意义(Z=-14.93,P<0.001)。结论医学应用中核医学和工业应用中测井放射工作人员人均年有效剂量相对较高,应持续改进和完善工作场所防护措施,加强放射工作人员管理监督。

Objective To summarize the levels of individual dose to radiation workers in Shandong province from 2016 to 2020,and to analyze the trends in their change in order to provide scientific basis for radiation workers′health management.Methods The experimental detection and quality control were carried out in compliance with the national standards Specifications for individual monitoring of occupational external exposure(GBZ 128-2019)and the Testing criteria of personnel dosimetry performance for external exposure(GBZ 207-2016).The result of the personal dose monitoring of occupational external exposure of all radiation workers monitored by the Centers for Disease Control and Prevention in 16 cities of Shandong province were retrospectively analyzed by using SPSS 23.0 software.Results The total number of monitored workers were 25523 with an average annual individual effective dose of 0.28 mSv.There were statistically significant differences among radiation workers in different years(H=2815.91,P<0.001).The average annual individual effective dose showed an upward trend followed by a downward trend.The average annual effective dose of 0.55 mSv for nuclear medicine radiation workers in medical applications was the highest,with statistically significant differences among different occupational radiation workers(H=310.37,P<0.001).The average annual effective dose of 0.37 mSv for radioactivity logging workers in industrial applications was the highest,with statistically significant differences among different occupational radiation workers(H=448.07,P<0.001).The average annual effective dose to radiation workers in medical applications was higher than in industrial applications(Z=-14.93,P<0.001).Conclusions The average annual effective dose to nuclear medicine radiation workers in medical applications and logging radiation workers in industrial applications are relatively high.There would be a push to furthe improve workplace protection measures and strengthen the management and supervision of radiological workers.