2011年天津市部分放射工作人员外照射个人剂量监测结果分析

目的了解2011年天津市部分放射工作人员在职业活动中受到的外照射个人剂量情况。为提高放射防护管理工作质量提供建议。方法根据相关标准的要求，采用热释光个人剂量监测的方法监测放射工作人员外照射个人剂量当量。结果放射工作人员的年平均有效剂量为0．355mSv，医学应用的年平均有效剂量为0．370mSv，工业应用的年平均有效剂量为0．278mSv。98．2％的放射工作人员年有效剂量低于5mSv。结论所调查的2011年天津市的放射工作人员的工作环境的放射防护措施能够有效地控制辐射水平。但需要进一步加强，对年有效剂量超过5mSv的工作人员的管理。

Analysis of individual dose monitoring results of some radiation workers with occupational external exposure in Tianjin City in 2011

[ Objective] To understand the monitoring results of individual dose among some radiation workers in Tianjin City, and propose some advice for improving the radiological protection management. [ Methods] Based on requirements of related standards, thermoluminescent dosimetry was adopted tn monitor external radiation doses as personal dose equivalent on radiation workers. [ Results ] The total average personal dose equivalent was 0. 355 roSy/a, the average effective dose was 0. 370 mSv in medical appli- cations, and 0. 278 mSv in industrial applications. And 98.2% of the results were below 5 mSv. [ Conclusion] The existing radia- tion protection measures in the surveyed workplaces can control the radiation level effectively in Tianjin. But the management of radi- ation workers with annual effective dose 〉 5 mSv needs to be further strengthened.