search



Corporate Information

 
Press Release (Apr 22,2011)
The results of nuclide analyses of radioactive materials in the air at the site of Fukushima Daiichi Nuclear Power Station (28th release)
 
On March 22nd, 2011, as a part of monitoring activity of the surrounding 
environments, 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 21st, 2011, we conducted nuclide analyses 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, on April 22nd, 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 the air collected 
on April 11th 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 16.1KB) 
Appendix: The result of measured Pu in the air at Fukushima Daiichi Nuclear 
          Power Station(PDF 12.2KB) 
Appendix: Fukushima Daiichi: the result of the dust nuclide analysis 
                                                               (PDF 13.4KB) 
Appendix: Fukushima Daini: the result of the dust nuclide analysis 
                                                               (PDF 10.6KB) 
back to page top


to TOP