重庆市工业射线探伤和密封源应用放射工作人员2011—2012年外照射个人剂量监测结果分析

Individual Dose Monitoring of Industrial Radiographers and Sealed Source Workers in Chongqing,2011-2012

[目的]了解重庆市工业射线探伤和密封放射源应用放射工作人员的个人剂量水平。[方法]采用热释光剂量测量法对重庆市2011—2012年共500名放射工作人员的职业外照射个人剂量进行监测。[结果]2011—2012年接受监测的272名工业探伤工作人员个人剂量范围为0.01～4.74mSv/a,人均个人剂量为0.145mSv/a;228名工业密封源应用人员个人剂量范围为0.0l～1.56mSv/a,人均个人剂量为0.075mSv/a。[结论]重庆市工业放射防护总体良好,工作人员个人剂量水平符合国家标准规定的年剂量限值,但工业探伤高于密封源应用工作人员的人均年有效剂量。

[ Objective ] To measure the individual dose level of external radiation exposure in the industrial radiographers and sealed source workers in Chongqing. [ Methods ~ Thermoluminescence dosimetry was used to record the occupational external radiation individual dose in 500 workers during 2011-2012. [ Results ] In 2011-2012, the 272 industrial radiographers＇ individual doses ranged from 0.01-4.74mSv/a, and the average of individual dose was 0.145 mSv/a; the 228 sealed source workers＇ individual doses ranged from 0.01-1.56 mSv/a, and the average of individual dose was 0.075 mSv/a. [ Conclusion ] The industrial protection in Chongqing city is generally at a high level. The annual individual doses of the workers all meet the requirement of corresponding national standard, but the effective doses of industrial radiographers are higher than those of the sealed source workers.