北京正负电子对撞机重大改造工程的竣工验收辐射监测  

Radiation Survey for Final Acceptance of Beijing Electron-Positron Collider Ⅱ Project

作　　者：蒋婧[1] 阙骥[1] 杜娟[2] 胡翔[2] 马国学[2] 宋福祥[2] 顾洪坤[2] 

机构地区：[1]环保部核与辐射安全中心,北京100082 [2]北京市辐射安全技术中心,北京100089

出　　处：《辐射防护》2013年第4期212-219,共8页Radiation Protection

摘　　要：北京正负电子对撞机重大改造工程(BEPCⅡ)于2009年5月顺利完成,北京市辐射安全技术中心对其进行了竣工验收辐射监测。结果表明,在BEPCⅡ正常运行时,职业人员和公众所接受的最大年有效剂量分别为2.03 mSv和11.7μSv,低于规定约束值;对撞实验区内外的电磁环境敏感点测得的功率密度值均低于国家标准规定限值0.4 W/m2;土壤样品中的天然放射性核素含量均在相关标准规定的范围内;BEPCⅡ直线加速器二次循环冷却水总α和总β活度浓度分别为0.03 Bq/L和小于0.014 Bq/L,低于标准限值;地下水的总α和总β活度浓度均小于0.1 Bq/L,为Ⅰ类地下水。The project of Beijing Electron-Positron Collider Ⅱ （BEPC Ⅱ ） was successfully completed in May 2009 and Beijing Radiation Safety Technology Center carried out the radiation survey for the final acceptation of BEPC Ⅱ . The results showed that, in normal operation, the maximum annual effective dose for the occupational staff was 2.03 mSv and 11.7 μSv for the public, both were less than the specified limits. The power density values measured at sensitive points in the electromagnetic environment inside and outside of the experimental area were lower than the national standard limit of 0.4 W/m2. The activity density of natural radionuclide in the soil samples fell in the range of natural activity density. For the secondary loop cooling water from BEPC Ⅱ electron linac the total alpha activity concentration was 0.03 Bq/L and the total beta activity concentration was less than 0. 014 Bq/L, both were below the standard limit. The total alpha and the total beta activity concentrations in the groundwater were both less than 0.1 Bq/L as class I groundwater.

关 键 词：对撞机 辐射水平 验收监测 

分 类 号：TL751[核科学技术—辐射防护及环境保护]