Study: Radioactive tin-113 from Fukushima reactors detected over 200 kilometers away

Published: September 18th, 2012 at 1:43 am ET


Title: Analysis of Radionuclide Releases from the Fukushima Dai-Ichi Nuclear Power Plant Accident Part I
Source: Pure and Applied Geophysics
Author: G. Le Petit, G. Douysset, G. Ducros, P. Gross, P. Achim, M. Monfort, P. Raymond, Y. Pontillon, C. Jutier and X. Blanchard, et al.
Date: Sept. 16, 2012


Part I of this publication deals with the analysis of fission product releases consecutive to the Fukushima Dai-ichi accident. Reactor core damages are assessed relying on radionuclide detections performed by the CTBTO radionuclide network, especially at the particulate station located at Takasaki, 210 km away from the nuclear power plant. On the basis of a comparison between the reactor core inventory at the time of reactor shutdowns and the fission product activities measured in air at Takasaki, especially 95Nb and 103Ru, it was possible to show that the reactor cores were exposed to high temperature for a prolonged time. This diagnosis was confirmed by the presence of 113Sn in air at Takasaki. The 133Xe assessed release at the time of reactor shutdown (8 × 1018 Bq) turned out to be in the order of 80 % of the amount deduced from the reactor core inventories. This strongly suggests a broad meltdown of reactor cores.

See also: [intlink id=”report-radioactive-tin-113-antimony-125-reactor-3-sign-neutron-ray-results” type=”post”]{{empty}}[/intlink]

Published: September 18th, 2012 at 1:43 am ET


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7 comments to Study: Radioactive tin-113 from Fukushima reactors detected over 200 kilometers away

  • kintaman kintaman

    There are so many unknown variables involved in this highly complex disaster that the spread of highly toxic contaminants of so many types cannot be accurately known by any means.

    This is one of the main reasons I chose to leave Japan, too many unknowns with the addition of the intentional deceptions by TEPCO and the JP gov.

  • TheBigPicture TheBigPicture

    How many forms of radiation from the daiichi nuclear plant have leaked? ..dozens, hundreds?

  • alpha-tracker

    Each new metallic (or other) element found downwind of Fukushima which is less volatile than plutonium further confirms that lots of plutonium was vaporized in 2011. The idea that plutonium was being lofted 'for a prolonged time' is a very scary thought. Oh, and in 2012, the coriums are still hot enough to vaporize some plutonium. Get out of Japan!

    Boiling points (approx.): Niobium 4742C; Ruthenium 3900C; Plutonium 3228C; Plutonium oxide 2800C.