鄂尔多斯市含密封源仪表辐射防护水平调查及分析  

Investigation and Analysis of Radiation Protection Level of Instrument with Sealed Source in Ordos City

作　　者：李业强 Li Yeqiang(Ordos City Radiation Monitoring Station,Ordos 017010,China)

机构地区：[1]鄂尔多斯市辐射监测站,内蒙古鄂尔多斯市017010

出　　处：《环境研究与监测》2018年第3期52-55,共4页Environmental Research and Monitoring

摘　　要：对鄂尔多斯市涉源企业的含密封源仪表使用场所进行监测,掌握各企业的辐射防护水平,并对辐射环境进行了评价。依据《含密封源仪表的放射卫生防护要求(GBZ 125-2009)》标准,使用AT1123型X,γ辐射剂量仪对含密封源仪表5cm、100cm及环境进行γ剂量率监测,并对工作人员个人剂量计算或监测。监测的31家企业,284台含密封放射源仪表表面5cmγ剂量率范围是0.071~75μSv/h,100cmγ剂量率范围是0.058~4.400μSv/h,仪表安装环境γ剂量率范围是0.060~0.280μSv/h,厂区环境剂量γ剂量率范围是0.076~0.164μSv/h;工作人员年有效剂量值0.008~0.640mSv。监测结果表明,鄂尔多斯市含密封源仪表防护状况良好,符合国家家标准,工作人员年有效剂量值均在国家规定范围内,应加强企业辐制度建设和辐射安全管理。WMonitor the use of sealed source instruments in the source enterprises of Ordos City, master the radiation protection level of each enterprise, and evaluate the radiation environment. According to the ＂radiation sanitation protection requirements for sealed source instruments （GBZ 125-2009）＂ standard, use ATl123 type X, gamma radiation dosimeter to monitor the gamma dose rate of the sealed source instrument 5cm, lOOcm and the environment, and personally Dosage calcu- lation or monitoring. Among the 31 companies monitored, 284 sets of sealed radioactive sources have a 5cm γ dose rate range of 0.071-75μSv/h, lOOcm γ dose rate range of 0.058-4.400μSv/h, and instrument installation environment γ dose rate range of 0.060-0.280μSv/h, the environmental dose γdose rate range of the plant is O.076-0.1641~Sv/h; the annual effective dose value of the staff is 0.008-0.640mSv. The monitoring results show that the instrument protection of sealed source in Ordos City is in good condition and meets the national standard. The annual effective dose value of the staff is within the scope of national regulations. The construction of radiation system and radia-tion safety management should be strengthened.

关 键 词：密封源 辐射防护水平 调查 分析 

分 类 号：X591[环境科学与工程—环境工程]