Revaluation of Tsunami Risk at the Site of Ulchin Nuclear Power Plant

In the past, safety asessment on the site of Ulchin Nuclear Power Plants against tsunamis wascaried out with probable maximum earthquake magnitude and related tsunamigenic fault parameters. Recently,however, based on the seismic gap theory, some seismologists warned about earthquakes of larger magnitudesthan had been expected. In this study, we revaluated tsunami risk with a finite diference model based on linearand nonlinear shallow water equations. Firstly, we simulated the 3 tsunami and compared the calculated watersurface profile with the observed wave heights. Secondly, we evaluated the rise and drop of sea water level at thesite of Ulchin Nuclear Power Plant with fault parameters of the past 83, 3 tsunamis and some dangerous faults.Finaly, we showed that the coling water intake facility of Ulchin Nuclear Power Plants would be safelyoperated in disastrous tsunamis.