Park MinSeok, Kim Gi-sub, Ji Young Hoon, Jung Min-sun, Kim Kum Bae, Jung Haijo
Radiation Safety and Section, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea.
Radiat Prot Dosimetry. 2014 Jan;158(2):241-5. doi: 10.1093/rpd/nct204. Epub 2013 Sep 11.
This work proposes the basic reference data of occupational dose management and statistical dose distribution with the classification of radiation work groups though analysis of occupational dose distribution. Data on occupational radiation exposure from medical and scientific usage of radiation in Korea Institute of Radiological and Medical Sciences for the years 2002-11 are presented and evaluated with the characteristic tendency of radiation working groups. The results of occupational radiation exposure were measured by personal dosemeters. The monitored occupational exposure dose data were evaluated according to the average effective dose and collective dose. The most annual average effective dose for all occupational radiation workers was under 1 mSv. Considering the dose distribution of each department, most overexposure workers worked in radiopharmaceutical product facilities, nuclear medicine department and radiation oncology department. In addition, no monitored workers were found to have received an occupational exposure over 50 mSv in single year or 100 mSv in this period. Although the trend of occupational exposure was controlled <1 mSv after 2007 and the radiation protection status was sufficient, it was consistently necessary to optimise and reduce the occupational radiation exposure.
本研究通过分析职业剂量分布，提出了职业剂量管理的基本参考数据以及按辐射工作类别划分的统计剂量分布。文中呈现了韩国放射医学科学研究所2002年至2011年期间医疗和科研辐射使用的职业辐射暴露数据，并结合辐射工作群体的特征趋势进行了评估。职业辐射暴露结果通过个人剂量计进行测量。监测到的职业暴露剂量数据根据平均有效剂量和集体剂量进行评估。所有职业辐射工作人员的年度平均有效剂量大多低于1毫希沃特。考虑到各部门的剂量分布情况，大多数超量暴露工作人员就职于放射性药品生产设施、核医学科和放射肿瘤科。此外，未发现有监测对象在单一年度接受超过50毫希沃特的职业暴露，或在此期间接受超过100毫希沃特的职业暴露。尽管2007年后职业暴露趋势得到控制，低于1毫希沃特，且辐射防护状况良好，但持续优化和降低职业辐射暴露仍很有必要。
