Shika nuclear plant coastline hit by 4-meter tsunami after Noto quake: utility

The operator of a nuclear power plant in central Japan has announced that the tsunami unleashed by the New Year's Day earthquake surged to about 4 meters in height along the coastal areas of the plant.

Hokuriku Electric Power Company held an online news conference on Monday. It explained the results of its investigation into how the Shika plant was impacted by the severe quake that jolted the Noto Peninsula.

The plant in Shika Town, Ishikawa Prefecture, is located on the western coast of the peninsula.

Both of its reactors have been offline since 2011, when the triple disaster devastated the country's northeastern region.

Hokuriku Electric says tsunami measuring up to about 4 meters in height surged over rocky terrain and elsewhere along coastal areas of the plant's site. It had initially reported the maximum height of the tsunami to be 3 meters.

The utility says both reactors were safe, as buildings that house them are situated at 11 meters above sea level.

It also says it confirmed subsidence and other forms of ground deformation at about 80 locations in the plant's compound. But it says the deformation remained near the surface and that it did not confirm any traces of faults shifting within the site.

The firm maintains its assessment that the plant's premises have no active faults. It provided the explanation during a screening procedure required to gain regulatory approval for restarting the plant's reactors.

The utility says the quake damaged a transformer that was used to receive external power. Officials say they are now studying how to replace or repair the damaged equipment, but they have not yet established a timeline for the restoration process.