On May 13th, 2011, we conducted the sampling of 1,000ml water collected in
common spent fuel pool of Fukushima Daiichi Nuclear Power Station to
confirm spent fuel remains intact.
 
As a result of nuclide analysis of radioactive materials contained in the
pool water, radioactive materials were detected as shown in the appendix.
We have reported the result of the analysis to NISA and the government of
Fukushima Prefecture.
 
We will further evaluate the matter in detail.
 
Appendix: Results of analysis of common spent fuel pool water of Fukushima 
                                Daiichi Nuclear Power Station (PDF 8.37KB)