Development of seismic counter measures against cliff edges for enhancement of comprehensive safety of nuclear power plants, 15; Cliff-edge elimination technology for reactor vessel and piping

Yamano, Hidemasa   ; Nishida, Akemi  ; Choi, B.  ; Takada, Tsuyoshi*  

The authors have evaluated the fragility of a reactor vessel and piping based on the response waveforms of the reactor building obtained through an earthquake response analysis. Additionally, this study has conducted quantitative evaluation on the response mitigation effect of the vessel and piping by introducing seismic isolation to the building as a preventive measure against a cliff-edge effect.