辽宁省某水泥厂1984年从山东省建材机械厂引进含有~(137)Cs放射源的料位计,未办理许可登记手续。1992年2月工厂停产期间,没有对放射源采取安全防范措施,致使11.06×10~8Bq(29.9mCi)的~(137)Cs放射源被儿童盗出发生重大放射事故。现将事故的处理经过报道如下。一、放射源被盗过程辽宁省某水泥厂停产期间,疏于管理,1992 In 1984, a cement plant in Liaoning Province introduced a level gauge containing 137Cs radioactive source from Shandong Building Materials Machinery Factory, and did not go through the permit registration procedures. During the shutdown of the factory in February 1992, no safety precaution was taken against the radioactive source, resulting in the occurrence of a major radioactive accident when the 137Cs radioactive source of 11.06 × 10 ~ 8Bq (29.9mCi) was stolen by children. The handling of the accident is reported below. First, the radioactive source theft process During the shutdown of a cement plant in Liaoning Province, neglect management, 1992