【摘要】 241 Am污染的低放水平泥土,作为一种放射性固体废物,在核设施退役中尚无成熟的整备技术。本文介绍一种比较特别的整备方式,首先将放射性泥土在包装容器(200L碳钢桶)内采用20t桶内压缩处理,将放射性泥土从松散状态压缩至密实状态,压实比为1.1～1.4。然后在包装容器上部浇注10～15cm厚水泥砂浆进行密封,形成以放射性泥土为核心的、可用普通的固体废物描述的水泥密封体。将水泥密封体作为整备对象,采用Ⅶ型钢箱进行再包装和水泥固定整备,最后形成Ⅶ型钢箱包装体。通过有关辐射监测,确定Ⅶ型钢箱包装体放射性特性参数符合放射性废物运输要求,满足国家处置场接收和最终处置的要求。更多还原

【Abstract】 A special conditioning way for low level soil contaminated by 241Am was discussed.Firstly,the contaminated soil was condensed in package container(200 L drum) by 20 t pressing machine.The contaminated soil was pressed from loose state to compaction state,and the volume reduction rate was from 1.1 to 1.4.Secondly,cement with thickness of 10 cm to 15 cm was poured on the package container for sealing.Thus,a cement sealing member was made up by contaminated soil and it could be described as normal solid waste.Finally,taking the cement sealing member as conditioning object,using Ⅶ steel trunk as package container and cement conditioning,Ⅶ steel trunk package was got.Through radiation monitoring,the Ⅶ steel trunk package can satisfy the transport requirement of radiation waste.Also,it can satisfy the accept and disposal requirements of national repository.更多还原