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一、事故情况事故发生在一座为辐射化学研究用的~(60)Co 辐照源,它的照射室内有一6m 深的水池,平时~(60)Co 源在水池底部贮存,照射样品时,通过电动装置将源提出水面,放射源由12根~(60)Co 棒排成环状,事故发生时放射性活度为5.3×10~4居里。照射样品的工作台如图1,在放射源周围有盛装照射样品的金
First, the accident situation Accident occurred in a radiation research for the (60) Co radiation source, the irradiation room has a 6m deep pool, usually ~ (60) Co source storage at the bottom of the pool, the irradiation of the sample by The source of the electric device is put on the surface of the water. The radioactive sources are arranged in a ring shape by 12 rods of ~ (60) Co, and the radioactive activity at the time of the accident is 5.3 × 10 ~ 4 Curie. The irradiation stage of the sample is shown in Fig. 1, where the gold containing the irradiated sample is surrounded by the radioactive source