多源γ辐射校准装置辐射环境影响评价  

Radiation environmental impact assessment of multi gamma-ray sources calibration equipment

作　　者：马晓 张保增[1] 王玮[1] MA Xiao;ZHANG Baozeng;WANG Wei(Beijing Research Institute of Uranium Geology,Beijing 100029,China)

机构地区：[1]核工业北京地质研究院,北京100029

出　　处：《世界核地质科学》2021年第3期388-390,391-393,共6页World Nuclear Geoscience

摘　　要：讨论多源γ辐射校准装置辐射环境影响评价时关注的重点,为同类项目场所屏蔽设计及评价提供参考。结合放射源衰减特性,计算不同工作状态下装备表面、机房外剂量率。结果显示,关机时装置表面剂量率低于厂家设计要求,对机房外的影响极小;开机时机房外最大剂量率低于剂量率控制水平,可不考虑天空反散射所致周围公众附加剂量。多源γ辐射校准装置含有多枚可用的放射源,应考虑不同状态下其对周围环境的最大辐射影响,确保其对周围环境及公众所受附加剂量满足要求。The key points of the radiation environmental impact assessment about multi gamma-ray sources calibration equipment is discussed,which can provide reference for shielding design and evaluation of similar projects.According to the attenuation characteristics of radiation source,the dose rates on the equipment surface and outside the room under different working conditions are calculated.The results show that the surface dose rate of the device is lower than the manufacturer’s design requirements when in off state;the maximum dose rate outside the room is lower than the dose rate control level when in working state,the additional dose caused by sky backscattering cannot be considered.There are multiple sources in the multi gamma-ray sources calibration equipment,analyzing the maximum radiation dose rate of the device under different working conditions,ensure that the radiation dose rate to the surrounding environment and the public under the control level.

关 键 词：多源 校准 辐射环境影响 

分 类 号：O652.63[理学—分析化学]