Transactions of the Atomic Energy Society of Japan
Online ISSN : 2186-2931
Print ISSN : 1347-2879
ISSN-L : 1347-2879
Radionuclide Release to Stagnant Water in Fukushima-1 Nuclear Power Plant
Kenji NISHIHARAIsao YAMAGISHIKenichiro YASUDAKenichiro ISHIMORIKiwamu TANAKATakehiko KUNOSatoshi INADAYuichi GOTOH
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JOURNALS FREE ACCESS Advance online publication

Article ID: J11.040

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Abstract

  After the severe accident in the Fukushima-1 nuclear power plant, a large amount of contaminated stagnant water has been produced in turbine buildings and surrounding areas. This rapid communication reports the calculation of the radionuclide inventory in the core, the collection of the measured inventory in the stagnant water, and the estimation of the radionuclide release ratios from the core to the stagnant water. The present evaluation is based on data obtained before June 3, 2011. It was revealed that the release ratios of tritium, iodine and cesium were several tens of percent, while those of strontium and barium were smaller by one or two orders of magnitude. These release ratios of the Fukushima accident were equivalent to those of the TMI-2 accident.

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© 2012 Atomic Energy Society of Japan
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