2006—2010年广东省某核电站维修工作人员受照剂量水平分析  

Analysis on external exposure dose level of maintainers in a nuclear power plant in Guangdong province,2006-2010

作　　者：麦维基[1] 刘小莲[1] 贾育新[1] 邱美娇[1] 张素芬[1] 李明芳 杨宇华[1] 

机构地区：[1]广东省职业病防治院,广东省职业病防治重点实验室,广东广州510300

出　　处：《中国职业医学》2014年第1期61-64,共4页China Occupational Medicine

基　　金：卫生行业科研专项项目(201002009);广东省职业病防治重点实验室(2012A061400007);广东省医学科学技术研究基金(A2011047)

摘　　要：目的了解2006—2010年广东省某核电站维修工作人员的职业性外照射个人剂量。方法 2006—2010年采用热释光剂量测量方法对该核电站维修工作人员进行个人剂量监测,对有关数据进行分析。结果 5年共监测4 718人次,实测集体剂量当量7.14人·Sv,个人受照剂量为<5.00 mSv/年者占监测人次的94.02%,未发现个人受照剂量>20.00 mSv/年者;年个人有效剂量超过5.00 mSv的人次数分布比(NR5)为0.060,集体剂量分布比为0.326。现场通用技术服务人员年集体剂量当量达6.81人·Sv,NR5为0.068,均高于机械维修、电气仪表检修、土建维修以及技术支持与管理工种(P<0.05)。结论广东省核电站维修工作人员的受照剂量在容许范围内,有关辐射安全与防护管理工作仍有待加强。Objective To investigate and analyze the occupational external exposure individual dose of Guangdong nuclear power plant maintainers from 2006 to 2010. Methods To monitor the personal dose of the plant maintainers with thermolu-minescence dose measurement from 2006 to 2010, analyze the data of this measurement. Results The total of 4 718 per-son-times were monitored in this 5-year period, the actual measurement of collective dose equivalent was 7.14 person · Sv. The rate of individual exposure dose 〈 5.00 mSv/a was 94. 02% , while individual exposure dose 〉 20. 00 mSv/a was not found. Distribution ratio （ NR5 ） of annual individual effective dose exceeding 5.00 mSv was 0. 060, distribution ratio of collective dose was 0. 326. Annual collective dose equivalent of general technical service personnel at the scene was 6. 81 person · Sv, NR5 was 0. 068, higher than NR5 of machinery maintenance, electrical instrument repair, the civil service, technical support and management （ P 〈 0. 05 ）. Conclusion The exposure dose of Guangdong province plant maintainers can comply with the standard, and the radiation safety and protection management remain to be strengthened.

关 键 词：核电站 维修工作人员 个人剂量监测 外照射 受照剂量 

分 类 号：R134.2[医药卫生—劳动卫生]