2008年四川省放射工作人员个人剂量水平分析

目的了解四川省放射工作人员个人剂量水平,为放射防护提供科学依据。方法采用热释光剂量测量方法对四川省2008年放射工作人员进行监测。结果全省共监测7499人,年人均有效剂量为1.03mSv/a,年集体剂量为7.79人.Sv,年有效剂量小于5mSv/a的人员占98.61%,有0.11%的人员超过20mSv/a国家标准规定放射工作人员年剂量限值。年有效剂量排列前6位的放射工种分别是测井6.54mSv/a、介入放射学4.27mSv/a、石油和天然气工业2.51mSv/a、加速器运行2.40mSv/a、核医学2.21mSv/a、工业探伤1.90mSv/a。结论四川省放射防护工作有待进一步加强。

Individual Dose Level of External Exposure to Radiation Workers in Sichuan Province,2008

Objective To understand individual dose level of external exposure to radiation workers in Sichuan province,and provide evidence to radiation protection.Methods Thermoluminescence dosimetry method was used for the radiation workers in Sichuan province in 2008.Results A total of 7499 radiation worker were surveyed.The annual effective dose per capita was 1.03（mSv/a）.The annual collective dose was 7.79（per capita,Sv）.The workers with effective dose less than 5mSv/a accounted for 98.61%.The annual dose of 0.11% of the workers exceeded the national standard （20mSv/a）.The first six occupations with high annual effective dose were well logging （6.54mSv/a,） interventional radiology（6.54mSv/a）,petroleum and natural gas exploiting （2.51mSv/a）,accelerator operation （2.40mSv/a）,nuclear medicine（2.21mSv/a） and industry defectoscopy（1.90mSv/a）.Conclusion it is necessary to strengthen the radiation protection in Sichuan province.