可移动式高活度废放射源整备装置设计和建立

Basic Design and Construction of a Mobile Hot Cell for the Conditioning of Spent High Activity Radioactive Sources

对高活度废放射源实施整备是废放射源管理中的一个重要环节。在借鉴国内固定式放射源处理热室设计和操作经验、并参考国外移动式高活度废放射源整备装置相关资料的基础上,开发了高活度废放射源整备流程和可移动式废放射源整备装置技术方案并建立了整备装置。经调试,利用整备装置,开展了废放射源整备全流程冷试验,废放射源回取冷试验,以及装置拆装试验。利用活度为3.8×1013 Bq 60Co源测试了装置屏蔽性能。屏蔽性能测试中,装置墙体外侧表面高度2 m以下剂量率<0.016 mSv/h。试验和测试证明:整备装置满足设计要求,各部件性能良好。

The conditioning of spent high activity radioactive sources is one important step in sealed radioactive sources management strategies. Based on the practice on the designing of the immobilized hot cell, the handling of the sealed radioactive sources, and the reference of the mobile hot cell constructed in South Africa, SHARS conditioning process and the basic design of a mobile hot cell is developed. The mobile hot cell has been constructed and the tests including the cold test of the SRS conditioning, the hot cell assemble and disassemble and SRS recovery were done. The shielding capacity were tested by 3.8×10^13 Bq cobalt-60 sources and the dose rate of the equipment surface, below 2 m, is less than 0.016 mSv/h. It is proved that the designing requirement is meet and the function of the equipment is good.