农用钴室的扩建及环境监测

EXTENSION OF ^(60)Co RADIATION CHAMBER SERVING AGRICULTURE AND RADIOACTIVITY DOSE MONITORING

本文叙述了我校农用小型钴室活度由2.0×10^(14)Bq加大到1.13×10^(15)Bq扩建工程中屏蔽层的计算,以及扩建后的环境放射性剂量监测结果。测试结果表明,工作场所和周围环境的剂量水平均小于国家规定的放射性防护标准(BG4792-84)的限值。

Shield thicknesses of the ^(60)Co radiation chamber with source activity increased from 2.0×10^(14)Bq to 1.13×10^(15)Bq were calculated and the radioactivity doses around it measured. The radioactivity levels of the workplace and the environment of the ^(60)Co radiation chamber after extension are all within the limits recommended by the Radiation Protection Regulation(GB4792-84).