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Press Release (Apr 18,2011)
The results of nuclide analyses of radioactive materials in the air at the site of Fukushima Daiichi Nuclear Power Station (24th release)
 
On March 22nd, 2011, as part of monitoring activity of the surrounding 
environment, we conducted nuclide analyses of radioactive materials 
contained in the air which were collected at the site of Fukushima Daiichi 
Nuclear Power Station, which was damaged by the 
Tohoku-Chihou-Taiheiyou-Oki Earthquake. As a result, radioactive materials 
were detected and therefore, we summarized the results and reported them 
to Nuclear and Industry Safety Agency ("NISA") as well as to the 
government of Fukushima Prefecture.

The three nuclides (Iodine-131, Cesium-134 and Cesium-137) are to be 
released as fixed figures, and the other nuclide figures are to be 
revaluated in accordance with the preventive measures formulated after the 
warning from NISA on April 1st.
                                                    (Previously announced)

On April 17th, 2011, we conducted a nuclide analysis of radioactive 
materials contained in the air which were collected at the site of 
Fukushima Daiichi Nuclear Power Station on the same day. As a result, 
radioactive materials were detected as described in the exhibit. 
Accordingly, we have reported the result of the analysis to NISA and the 
government of Fukushima Prefecture.

Concerning the nuclides of Plutonium -238, Plutonium -239 and 
Plutonium -240 in air, sampling and analyses were conducted on April 4th 
and no above nuclides have been detected from the analyzed samples.

We are planning to conduct these surveys continuously. 
Appendix: The result of the nuclide analysis of radioactive materials in 
          the air at the site of Fukushima Nuclear Power Station 
                                                               (PDF 12.4KB) 
Appendix: The result of measured Pu in air at Fukushima Daiichi Nuclear 
                                                 Power Station (PDF 7.75KB) 
Appendix: Fukushima Daiichi: the result of the dust nuclide analysis 
                                                               (PDF 13.3KB) 
Appendix: Fukushima Daini: the result of the dust nuclide analysis 
                                                               (PDF 13.5KB) 
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