高活度废放射源整备屏蔽材料(沙子)性能研究  

Study on shielding material (sands) for disused high activity radioactive sources conditioning

作　　者：沈福[1] 姚泽恩[2] 杨卫兵[1] 梁栋[1] 马英豪[1] 安鸿翔[1] 范智文[1] 周晋元 SHEN Fu;YAO Zeen;YANG Weibing;LIANG Dong;MA Yinghao;AN Hongxiang;FAN Zhiwen;ZHOU Jinyuan(China Institute for Radiation Protection,Taiyuan 030006;Lanzhou University,Lanzhou 730000)

机构地区：[1]中国辐射防护研究院,太原030006 [2]兰州大学,兰州730000

出　　处：《辐射防护》2018年第6期502-506,共5页Radiation Protection

基　　金：“十一五”国家科技支撑计划(2007BAK32803).

摘　　要：针对高活度废放射源整备建立了可移动废放射源整备屏蔽实验装置,利用该装置,从工程运用角度开展了忻州沙的粒径、密度测量和屏蔽实验,筛选出了适合废放射源整备使用的特定类型沙子。研究结果显示:采用厚度150 cm饱和含水忻州建筑沙作为屏蔽材料,可确保1 000 Ci ^(60)Co废放射源整备时在屏蔽装置外产生的剂量率小于0.03 mSv/h。Shielding experiment devices were established for high activity disused radioactive sources conditioning study.The shielding performance of different types of Xinzhou sands with different particle size and different density as well as different water contents were studied for engineering application.The suitable sands were chosen for high activity disused radiation sources conditioning.Results show that the dose rate will be controlled below 0.03mSv/h by using 150 cm Xinzhou water saturated sands for construction as shielding material while conditioning 1000 Ci ^60 Co radioactive source.

关 键 词：高活度 废放射源 整备 屏蔽 沙子 密度 

分 类 号：TL77[核科学技术—辐射防护及环境保护]