At around 9:30 am on April 2nd, 2011, we detected water containing over
1,000 mSv/h of radiation dose in the pit* where power supply cables are
stored near the intake channel of Unit 2. Furthermore, there was about
20 centimeters of crack on the concrete lateral of the pit, from where
the water in the pit was outflowing. At around 12:20 pm on April 2nd, we
reaffirmed the event at the scene.
We have implemented sampling of the water in the pit, together with the
seawater in front of the bar screen near the pit. These samples were sent
to Fukushima Daini Nuclear Power Station for analysis. 
                                      (Previously announced on April 2nd)

At around 5:38 am on April 6th, we have observed stoppage of spilling of
water from the crack on the concrete lateral of the pit. For the sake of
completeness, we put further reinforcement for the stoppage of leakage
and consider countermeasures including continuous injection of coagulant.
We will also note the water level of turbine building of unit 2 remain
unchanged. We will further investigate if there is any other leakages.
                                      (Previously announced on April 6th)

We have been conducting sampling of seawater in front of the bar screen
near the pit. In regard to the sample collected yesterday (April 10th), 
as a result of conducting nuclide analysis, radioactive materials were 
detected as described in the exhibit. Accordingly, we have reported the 
result of analysis to Nuclear and Industrial Safety Agency and Fukushima
Prefecture.

Regarding the results on three nuclides (iodine 131, cesium 134,
cesium 137), we would like to assume those as definite result, however,
as for other nuclides, we will revaluate in accordance with the
preventive measures formulated after being given warning from Nuclear and
Industrial Safety Agency on April 1st.
  
* pit: a vertical shaft made of concrete 

Appendix: The result of nuclide analysis of the seawater at the front of 
          shallow draft quay and the screens of Unit 2 and 4 of the 
          Fukushima Daiichi Nuclear Power Station (PDF 52.3KB) 
Appendix: Radioactivity density of seawater near the quay of Fukushima 
          Daiichi Nuclear Power Station (PDF 32.6KB)