我市曾于 1993、1998年发生二起放射源丢失的责任事故 ,经公安机关与防疫站专业人员努力查找 ,失源均被及时找回 ,虽未对环境及人员造成污染或放射性损伤 ,但造成了一定的社会影响和经济损失 ,现将事故发生简况和教训作简要报道 :1　事故发生简况1 1　某水泥厂于 1993年 3月 12 In 1993 and 1998, two accidents of radioactive sources loss occurred in our city. After the efforts were made by professional staff of public security organs and epidemic prevention stations to find out their sources of loss, they were recovered in time. Although pollution and radioactive damage to the environment and personnel were not caused, Caused a certain social impact and economic losses, the accident is now briefings and lessons learned for a brief report: 1 accident occurred a cement factory in March 13, 1993