Analysis on heat exchanging power of PCS based on surface modification technology

PCS is one of the core security systems of the third generation of nuclear power plant, its heat exchange power should be improved as high as possible, the heat exchange power of PCS can be improved by surface modification of the steel interface. The characteristics of each technology are summarized by analyzing the surface modification techniques, and the limiting factors of industrial application are indicated. Finally, the enhancement effect of PCS is calculated, the results show that it will accelerate the cooling of the containment vessel, and improve the nuclear power plants' ability to deal with accidents. (authors)