Abstract
This paper describes technical issues for the seismic safety of nuclear power plant components and also shows preliminary roadmaps for the solution of the issues. After the Chuetsu-oki earthquake of July, 2007, research committees were established in JSME and AESJ for the discussion of the effect of the earthquake on NPP components. Ten technical issues due to the earthquake are pointed out and the discussion concerning the roadmaps has started to solve each issue. The goal of the activity is for the advanced design methodology with seismic safety.
