The operator of the Fukushima Daiichi nuclear power plant says the groundwater level briefly plummeted near a building that houses one of the crippled reactors. Tokyo Electric Power Company, or TEPCO, says the fall was observed in a monitoring well about 11 meters southwest of the No.4 reactor building on Wednesday. The utility says the groundwater level temporarily sank roughly 1 meter below the level of contaminated water inside the reactor building. The firm says the groundwater rose above the usual level 23 minutes later. A sharp fall in the groundwater level just outside reactor buildings could cause contaminated water to leak from inside the buildings.
NHK 3rd Aug 2017 read more »