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[目的]分析淮安市医学放射工作人员个人剂量水平及分布情况,为放射防护管理工作提供基础依据。[方法]依据GBZ 128—2002《职业性外照射个人监测规范》的要求,采用热释光剂量方法对淮安市医学放射工作人员开展个人剂量监测工作,工种主要包括诊断放射学、介入放射学、核医学、放射治疗,采用放射工作人员职业健康管理系统对2012—2014年监测结果进行汇总统计以分析剂量分布特征。[结果]2012—2014年共监测2 540人次,人均年有效剂量为0.62 m Sv,3年人均年有效剂量分别为0.39、0.64、0.76 m Sv。所有受监测放射工作人员年有效剂量均低于20 m Sv,其中99.96%年有效剂量低于5 m Sv,人均年有效剂量较大的工种为诊断放射学(0.64 m Sv)和介入放射学(0.55 m Sv)。[结论]淮安市医学放射工作人员年有效剂量水平均低于剂量限值,现有工作条件和环境是安全的,人均年有效剂量呈逐年增高趋势,应进一步加强放射卫生监督管理工作。
[Objective] To analyze the personal dose level and distribution of medical radiation workers in Huaian city and provide the basis for radiation protection management. [Method] According to the requirements of GBZ 128-2002 “Personal monitoring of occupational external radiation”, the personal dose monitoring was carried out by using the thermoluminescence dose method for medical radiation workers in Huaian city. The main types of work include diagnostic radiology, interventional radiology, Nuclear Medicine, Radiation Therapy and Radiation Workers’ Occupational Health Management System to summarize the 2012-2014 monitoring results to analyze the dose distribution characteristics. [Results] A total of 2 540 person-times were monitored during 2012-2014. The annual average effective dose per person was 0.62 m Sv. The annual effective dose per person was 0.39, 0.64 and 0.76 m Sv, respectively. The annual effective doses of all monitored radiation workers were less than 20 m Sv, of which 99.96% of the annual effective doses were less than 5 m Sv. The annual per capita effective doses were classified as diagnostic radiology (0.64 m Sv) and interventional radiology 0.55 m Sv). [Conclusion] The annual effective dose level of medical radiation workers in Huaian is lower than the dose limit. The current working conditions and the environment are safe, and the effective dose per capita is increasing year by year. The supervision and management of radiation health should be further strengthened.