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目的通过对2012年辽宁省放射工作人员外照射个人剂量监测结果的分析,了解和掌握监测区域内放射工作人员外照射个人剂量情况。方法热释光剂量法监测,分析不同工种间个人剂量监测值是否存在差异。结果监测值符合国家对放射工作人员的剂量限值要求;医学应用放射工作人员人均年有效剂量为(0.87±0.53)mSv·a-1高于工业应用工作人员(0.71±0.59)mSv·a-1,差异有统计学意义(P<0.01);所有职业中,核医学工作人员人均年有效剂量最高,为(1.010±0.387)mSv·a-1;工业应用中各职业人群个人剂量差异无统计学意义。结论应加强医学应用,特别是从事核医学工作的放射工作人员的监测防护工作,督促用人单位及时送检个人剂量计;进一步规范正确佩戴个人剂量计的方法。
Objective To understand and grasp the personal dose of external radiation exposure of radiation workers in the monitoring area through the analysis of the results of personal radiation dose monitoring of radiation workers in Liaoning Province in 2012. Methods The thermoluminescence dosimetric method was used to monitor the differences in individual dose monitoring between different types of work. Results The monitoring value was in line with the national dose limits for radiation workers. The annual effective dose of radiation workers was (0.87 ± 0.53) mSv · a-1 higher than that of industrial workers (0.71 ± 0.59) mSv · a- 1, the difference was statistically significant (P <0.01); in all occupations, the annual per capita effective dose of nuclear medicine staff was the highest (1.010 ± 0.387) mSv · a-1; there was no statistical difference in the individual dose among occupational groups Significance of learning. Conclusion Medical applications should be strengthened. In particular, monitoring and protection of radiological staff working in nuclear medicine should be stepped up. Employers should be urged to promptly submit their personal dosimeters; and to further regulate the proper method of wearing personal dosimeters.