【摘要】 针对核设施退役中等离子切割解体设备产生的放射性气溶胶及松散污染,应用雾化固定的方法对其进行控制。工程应用研究试验的结果表明,降低固定剂的表面张力可减小固定剂雾化后的雾滴粒径,对捕集放射性气溶胶粒子有利;增大固定剂的粘度可增加松散污染的固定效果。现场验证试验的结果表明,工程应用研究所筛选的固定剂配方对于退役现场较高浓度的α放射性气溶胶具有较好的捕集效果,并能在一定时间内固定松散污染,有效降低人员扰动造成的再悬浮。更多还原

【Abstract】 The radioactive aerosol and loose contamination generated in disassembling the contaminated equipment by plasma cutting was harmful to the operator’s health. The method of atomizing capture liquid was used to capture and encapsulate the radioactive aerosol. The result of the engineering test indicated that reducing the capture liquid’s surface tension can decrease the atomized droplet’s particle diameter. That benefits the aerosol particle capturing. The higher viscosity contributes to encapsulate the loose contamination. On the decommissioning site,the selected capturing liquid in engineering test was effective in capturing the high concentration αradioactive aerosol and encapsulating the loose contamination. The encapsulating effort could prevent the loose contamination from resuspension for several days.更多还原