At around 12:30pm, May 11, 2011, employees who had been conducting
vertical shaft obstruction work, confirmed water flowing into the
pit* via power cable pipe lines.
Currently, together with investigating the possible leakage of water
including radioactive materials to the outside of the boundary, we have
taken samples of the water in the pit and the seawater in the intake
canal of Unit 3, and analyses are underway at Fukushima Daini Nuclear
We will conduct water stoppage measures in the pit.
In addition, we have been orally instructed by the Nuclear and Industrial
Safety Agent (NISA) as follows:
-To confirm an impact to the ocean
-To immediately conduct water stoppage measures
-To immediately identify the route of the inflow/outflow and the situation
and report to NISA
We will take measures to follow the above instruction.
* pit: A vertical shaft made of concrete
attachment:Seawater Piping Duct of Unit 3(PDF 16.1KB)