As part of monitoring activity of the surrounding environment, we
conducted an analysis of plutonium contained in the soil collected on
March 21 and 22 at the 5 spots in Fukushima Daiichi Nuclear Power Station.
As a result, plutonium 238, 239 and 240 were detected.
(Previously announced)
As a result of Plutonium analysis in the soil collected on October 3, 2011
at the 3 places where we collect samples periodically, plutonium 238, 239
and 240 were detected as shown in the appendix.
In addition, as a result of nuclide analysis of the gamma ray contained in
the soil collected on October 3 and 10, radioactive materials were
detected as shown in the appendix.
Today, we informed the Nuclear and Industrial Safety Agency and the
government of Fukushima Prefecture of the results.
We will continuously conduct the same sampling surveys.
Appendix1: Detection of Pu in the soil in Fukushima Daiichi Nuclear Power
Station(PDF 447KB)
Appendix2: Detection of gamma ray in the soil in Fukushima Daiichi Nuclear
Power Station (2011,October,3)(PDF 10.5KB)
Appendix3: Detection of gamma ray in the soil in Fukushima Daiichi Nuclear
Power Station (2011,October,10)(PDF 9.54KB)