1994年本市先后发生了两起放射源丢失事故，本文分析了造成放射事故的原因以及工作中应加强的几方面工作，报告如下：1事故经过1．1某水泥厂，未经卫生行政部门许可，擅自于1988年2月27日从广东某市计量检测所引进一台LF－1γ型料位计，放射源为137Cs，活度不详，据有关工作人 In 1994, two incidents of radioactive sources loss occurred successively in this Municipality. This paper analyzed the causes of radiation accidents and several aspects that should be strengthened in their work. The report is as follows: 1 After an accident happened in a cement factory, without the health administrative department Permits, without authorization on February 27, 1988 from a city of Guangdong measurement testing introduced a LF-1γ-type level meter, the radioactive source of 137Cs, activity unknown, according to the work of the people