Penetrant Testing for Dissimilar Metal Weld of Reactor Pressure Vessel Nozzle and Safe End in Nuclear Power Plant

This paper describes liquid penetrant testing process for dissimilar metal weld of PRV nozzle and safe end. It discusses the implementation features of solvent (removal penetrant testing and solvent) suspended development. The particularity of in-service penetrant test and implementation methods were also investigated, which should provide a reference for NDT staff.