某核设施外围环境γ辐射剂量率分析  

γ Radiation Dose Rate Analysis on Peripheral Environment of A Nuclear Facility

作　　者：蒋勇 朱小铰 王亮[2] JIANG Yong;ZHU Xiaojiao;WANG Liang(Guangyuan Radiation Environment Monitoring Station,Guangyuan,Sichuan 628000,China;Sichuan Provincial Radiation Environment Management and Monitoring Center Station,Chengdu,Sichuan 610039,China)

机构地区：[1]广元市辐射环境监测站,四川广元628000 [2]四川省辐射环境管理监测中心站,四川成都610039

出　　处：《环境监控与预警》2023年第6期37-41,共5页Environmental Monitoring and Forewarning

基　　金：四川省生态环境保护科技项目(2021HB05)。

摘　　要：核设施外围环境γ辐射剂量率是环境保护工作中的重点监测对象。采用瞬时测量、热释光测量以及自动站连续测量3种方法分析了四川某核设施外围2011—2021年的环境γ辐射剂量率、周边居民辐射累积剂量以及这3种方法对监测结果的影响。结果表明,该核设施运行未对周围环境辐射水平造成显著影响;瞬时测量和自动站连续测量监测数据较为稳定,热释光测量易受周围环境影响造成数据波动。因此,在采用热释光测量法开展辐射环境监测时应加强对热释光剂量片布放、收取、运输、测量等环节的质量控制,并开展热释光剂量片宇宙射线响应值的测量。Theγradiation dose rate of the peripheral environment of a nuclear facility is the key monitoring object in environmental protection work.In this study,three methods,including instantaneous measurement,thermoluminescence measurement and continuous measurement from the automatic station were used to analyze the environmentalγradiation dose rate and cumulative radiation dose of surrounding residents on the periphery of a nuclear facility in Sichuan from 2011 to 2021,and the influencing factors of the monitoring results obtained by these three methods.The results show that the operation of the nuclear facility has not significantly affected the radiation level of the surrounding environment.The instantaneous measurement and automatic station continuous measurement monitoring data are relatively stable,and the thermoluminescence measurement is susceptible to data fluctuations caused by the surrounding environment.Therefore,it is necessary to strengthen the quality control of the distribution,collection,transportation,and measurement of the thermoluminescence dose tablets,and the cosmic ray response value of thermoluminescence dose tablets should be measured.

关 键 词：核设施 Γ辐射剂量率 累积剂量 辐射监测 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]