38Tsunami
Response to earthquakes
and tsunamis
- Requirements from the New Regulatory Requirements
- ●A design basis tsunami should be developed based on the latest scientific and technical knowledge from seabed topography,
from wave source marine area to the area surrounding the site, and also from geological structures as well as
earthquake science such as seismic activity aspects.
- Actions taken at the Kashiwazaki-Kariwa Nuclear Power Station
- ●A design basis tsunami was developed considering submarine landslides as well as fault linkage.
As a result, the maximum height of a tsunami was assessed to be 6.8m in front of the water intake
and the maximum run-up height was assessed to be 7.6m. Since Units 6 and 7, which have applied for the compliance reviews,
are located at an elevation of 12m, it was confirmed that the tsunami will not run up to these Unit.
For the area where Units 1-4 are located, flooding can be prevented by a seawall, the height of which is 15m above sea level.
