Radiation Embrittlement Surveillance of ReactorPressure Vessel

This paper describes the vessel radiation surveillance program for Qinshan second nuclear power plant 600MWe pressurized water reactor.Surveillance program,test,evaluation method and origins for larger lead factor were discussed in detail.The effect of radiation embrittle for reactor pressure vessel for Qinshan second nuclear power plant was evaluated on the basis of the results of two surveillance capsules.