[2I01-09] PRA Method 2

11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)

[2I09] Effect of ground motion uncertainly on seismic risk in the frame of RI-PB.

*Daichi Ogawa¹, Yasuki Ohtori¹, Hitoshi Muta¹, Toshiaki Sakai² (1. TCU, 2. CRIEPI)

Keywords:

Probabilistic risk assessment,Fragility curve,RI-PB,Hazard curve

In this paper, we discuss the results of our investigation into the impact on annual damage probability in nuclear power plants, evaluating the uncertainty due to phase characteristics in design seismic motions used in the Risk-Informed and Performance-Based (RI-PB) design approach, which has been proposed as a seismic design method capable of quantitatively assessing the safety of nuclear power plants. We created multiple seismic waveforms with spectra fitting the design response spectra, quantitatively evaluated the uncertainties they contain, and examined their effects on the annual damage probability.