核电厂排污系统中磁棒吸附对放射性探测的影响

Influence of Magnetic Rod Adsorption on Radioactive Detection in Nuclear Power Plant Steam Generator Blow Down System

在研制核取样系统(REN)专用过滤装置过程中,考虑引入磁性过滤技术。本文研究了磁棒吸附对核电厂不同运行工况下的主要特征核素的测量影响,比较了磁棒在静置和搅拌模式下对放射性核素的吸附效率。结果表明,磁棒吸附对放射性测量的影响与放射性核素、存在的形态及核素活度浓度有关,不受样水流动的影响,在蒸汽发生器排污系统取样管线增加磁性过滤装置具有可行性。

In the process of developing a special filtration device for nuclear sampling system ( REN ), the magnetic filter technology was introduced. The influence of magnetic rod adsorption on the main characteristic nuclide measurement was studied under different operating conditions, and the radionuclide adsorption efficiency of the magnetic rod was compared in static and stirring mode. The results show that the influence of magnetic rod adsorption on radioactivity measurement is related to the radionuclides, the existing form and the nuclide activity concentration, and is not affected by the flow of the sample water. It is feasible to add the magnetic filter device in the sampling line of the steam generator sewage system.