摘要
以后处理主工艺流程离线设备———乏燃料溶解器作为去污对象,采用FL-AP去污工艺,经4步去污后,去污效果达到了去污要求(α污染水平≤4 Bq/cm2,β污染水平≤40 Bq/cm2)。该去污工艺对α、β的一步平均去污系数分别为2.2和2.4。溶解器解体检测结果表明,乏燃料溶解器的内表面沾污呈现不均匀分布。将挂片法和解体检测的结果以及FL-AP工艺去污废液的放射性测量结果相结合,可较确切地估算溶解器内表面去污前的放射性污染水平。
The decontamination of the dissolution tank from spent fuel reprocessing outline device is studied, by using FL-AP decontamination agent. The decontamination factor per step is 2.2,2.4, respectively for α, β activities. After dissecting the tank, residual contamination in inner surface of the tank was found to be non-uniform. The exact original contamination value of the tank surface could be approximated by calculating the total amounts of radionuclide distributed on the hanging specimens, the dissecting specimen, and radioactive level in waste decontamination agent. Therefore, it can be concluded that the hanging specimens method is feasible for measuring the decontamination factor of spent fuel dissolution tank.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2006年第1期26-29,共4页
Atomic Energy Science and Technology
