A significant amount of radioactive dust observed during the dismantlement of Unit 4

TEPCO announced the process of removing debris on the top floor of Fukushima Daiich Unit 4 was completed on July 11, 2012. In the process of dismantlement TEPCO accelerated since early this week, a significant amount of dust was observed through remote cameras. Some concerned this dust contains a high level radioactive substance and might blow into Tokyo or Osaka depending on the wind direction. Hiroaki Koide, a lecturer of Kyoto University Research Reactor Institute, however commented on Tanemaki Journal, an online radio broadcast, that the amount of radioactive substance blowing during this dismantlement was not so much compared to these released when the accident happened in March 2011, so that an immediate evacuation is not likely to be required.

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