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Long Shadow of Chernobyl

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  • Jay Hanson
    EXSKF EX-SKF ... Long Shadow of Chernobyl:
    Message 1 of 1 , Apr 26, 2013

      EX-SKF <http://ex-skf.blogspot.com/>


      Long Shadow of Chernobyl: 224 Bq/kg of Cesium-137 in the Ashes from
      Burning Wood Pellets Made from Trees in Shikoku

      Posted: 26 Apr 2013 12:02 AM PDT

      And of atmospheric testing of nuclear weapons by world nuclear powers,
      which did not stop until 1980 (China).

      One of my twitter followers lives in southwestern Japan. A while ago he
      sent me the result of the test he had it done with the ashes from
      burning wood pellets in his stove this winter. The lab test, using the
      germanium semiconductor detector, found *223.8 Bq/kg of cesium-137*.

      He was upset, thinking it is from Fukushima I Nuclear Power Plant, until
      I pointed out to him that *there was no cesium-134* found. The cesium in
      the ashes is most likely from the fallout from atmospheric testing, and
      the Chernobyl accident in 1986.


      He burned 600kg of wood pellets made from cedar trees in Ehime
      Prefecture in Shikoku Island in southwestern Japan. According to the
      pellet manufacturer, the concentration factor was about 375, and
      *radioactive cesium (Cs-137) in the pellets was estimated to be about
      0.59 Bq/kg*.

      He said he will "entomb" the ashes with concrete and bury.

      The chart plotting the historical monthly fallout in entire Shikoku (4
      prefectures, as they didn't start measuring the fallout in Ehime until
      1977) shows the spike from the Chernobyl accident was less than that of
      the atmospheric testing, and larger than that from the Fukushima
      accident. (The chart was created from data at Japan Chemical Analysis
      Center <http://search.kankyo-hoshano.go.jp/top.jsp>. Y-axis in log scale.)


      In 2012 he tested the ashes from burning the wood pellets from a
      different company, and to his great dismay the test found *1,000 Bq/kg
      of radioactive cesium (Cs-137)* in the ashes. He had already spread some
      of those ashes on his home garden. *Those pellets, it turned out, were
      made from trees from Europe* (Sweden, Finland, Germany, Austria) that
      the manufacturer had started to purchase in 1994 . That manufacturer
      told him that it had never ever occurred to them that the trees were
      contaminated from the Chernobyl accident, and there was no regulation on
      importing. The manufacturer told him that *they chose European trees
      because they were cheap, and supply was steady*.

      April 26 marks the 27th anniversary of the Chernobyl Nuclear Plant accident.

      [Non-text portions of this message have been removed]
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