Nuclear Expert: Xenon detections in S. Korea may be from Fukushima reactors — Criticality or ‘spontaneous fission of curium’ to blame?

Published: August 14th, 2013 at 4:59 pm ET


Yonhap, Aug. 13, 2013: […] According to the sources, the Korea Institute of Nuclear Safety detected traces of the colorless, odorless noble gas on three occasions in June. Xenon is detected in trace amounts after nuclear bomb tests or other nuclear activities. […] The government could not determine the origin of the Xenon gas, one of the sources said, adding that the North may not be responsible because no signs of nuclear activities have been seen in the country at around that time. […]

Wall St. Journal, August 13, 2013: […] Lee Ho-ryung, a nuclear specialist at the Korea Institute of Defense Analyses in Seoul, told Korea Real Time that […] the xenon traces didn’t necessarily originate from North Korea. They may have come from Japan, which is still struggling to recover from radiation leaks at the crippled Fukushima Daiichi nuclear power plant […]

Possible causes of Xenon releases

Wall St. Journal, Nov. 3, 2011: Nuclear fission by-products have been detected at one of the reactors at the Fukushima Daiichi nuclear power plant, the government said Wednesday, raising the possibility that some parts of the melted core may still be active. […] Xenon-133 has a short half-life of five days, and Xenon-135 just nine hours, an agency spokesman said. Any nuclear reaction would likely be taking place on a localized basis, the spokesman said. […]

Asahi Shimbun, Nov. 3, 2011: [Tepco] said Nov. 3 that naturally occurring “spontaneous nuclear fission”–not a state of criticality–created the xenon detected at the Fukushima No. 1 nuclear power plant. […] Instead of being caused by self-sustaining nuclear fission, the xenon was likely generated by spontaneous fission of curium and other radioactive substances derived from the reactor fuel, TEPCO said. […]

From July 18, 2013: [intlink id=”alarm-as-steam-seen-rising-from-fukushima-no-3-reactor-concerns-about-uncontrolled-chain-reaction-contains-highly-lethal-mixed-uranium-plutonium-oxide-fuel-tepco-we-dont-believe” type=”post”]{{empty}}[/intlink]

Published: August 14th, 2013 at 4:59 pm ET


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12 comments to Nuclear Expert: Xenon detections in S. Korea may be from Fukushima reactors — Criticality or ‘spontaneous fission of curium’ to blame?

  • Kassandra

    This is what we have been waiting for!

    We need a scientific authority to step up and announce that there are actually nuclear criticalities that are ongoing and uncontained at the Daiichi site.

    The catastrophe is not just about about storing contaminated water.

    Ongoing nuclear criticalities are amplifying environmental dispersion of geno-toxic radioisotopes.

    The webcam watchers have seen the results of these criticalities and they are huge steam releases and strange atmospheric conditions.

    We are really facing a civilization threatening risk. See here

    The potential collapse of spent fuel pool 4 is iconic of the potential cascading collapse of all of northern Japan's nuclear plants.

    The criticalities appear to be mostly underground. How will underground criticalites affect geological dislocations, which are already in play?

    Tokai and Daini, among other nuclear plants, were damaged seriously by the March 2011 earthquakes. Fires and radioactive water spills were reported at Tokai in Nov-Dec 2011. Daiichi is not the only plant in trouble.

    Cascading nuclear plant disasters spell 'widespread catastrophe' with no way of operationalizing.

    The experts that must be assembled cannot be reduced to insiders and nuclear proponents. Diverse perspectives are needed and some mechanisms need to be put in place to gather the insights of those with technical skills who've studied Fukushima for…

    • Kassandra

      …at Enenews and other similar forums…

      • We Not They Finally

        It's ALWAYS been an ELE. Just three days before 3-11, a family member said (out of the clear blue), "Something terrible is about to happen. It's the beginning of the end." Then came Fukushima. It may sound terrible to say, but we knew from the first day, and have been grieving ever since. But although we cannot alter circumstances, we can say from our hearts that what Humanity needs the most now is COMPASSION. Our culture seems to be so lacking in it.

        • Gasser Gasser

          I open my eyes

          Only for the truth and the truth moment's gone

All my Nuclear fears
Pass before my eyes with curiosity

          Dust in the wind
All we are is dust in the wind

          Same old scientific bullshit song

          Just a drop of Plutonium or Cesium water in an endless sea

          All they do

          Pollutes the ground, though we refuse to see
          (Aa aa aa)

Dust in the wind
All we are is Radioactive dust in the wind
Oh, ho, ho)

          Now don't hang on
Nothin' lasts forever but the earth and sky

          As It slips away

          And all your science won't another minute extend
          Dust in the hot twisting wind
We are all now reduced to dust in the wind
(We are polluted nano dust in the wind)

          Dust in the unforgiving wind
(Everything is Radioactive dust in the wind)
Everything now is dust in the deadly Buckyball wind
(In the wind)



    • MVB Michael Van Broekhoven

      Well said, Kassandra.

      "Criticality or ‘spontaneous fission of curium’ to blame?" Uh… Hm… I dunno…
      Why the question mark? Obviously with Xe-133 and I-131 (see my blogpost ) this MUST be what's occurring!

      I guess this is precisely what has always been called "the worst case scenario…", with corium melted to unknown locations and uncontrolled fissioning apparently going on (off and on) for years… And then wooptido what a surprise it's on the ground water rushing to to ocean… What clowns run this show??? Kinda unbelievable, the level of denial showcased by them "experts" at TEPCO and the "oversight" agencies that promoted and STILL promote this madness technology. They knew all along what would happen if it went wrong and that would have no clue what to do.

    • How To Stop The 3 Out Of Control Coriums Under Fukushima, Plus Petition; via @AGreenRoad

  • TheBigPicture TheBigPicture

    Yes, recriticality.

  • obewanspeaks obewanspeaks

    Yes, criticality now in the process undermining the the entire island support structures…

  • hbjon hbjon

    Gravity and other forces will assist the corium in a process of self-purification, and when a small mass forms, a criticality creates toxic gases.Nthing that can be done about it. The corium is not contained and will seek stability and the point of least resistance. Boron is a poison to fission because it absorbs neutrons. The problem is getting boron to penetrate the thick crusty layers of corium.

  • Probably left over from the filming of the Superman movies… nothing to worry about.

    Move on, nothing to see here..

  • yohananw

    example of recent radioxenon article from Australia, abstract as indexed in PUBMED is top index database of med sci literature.
    1. J Environ Radioact. 2013 Aug 6;126C:40-44. doi: 10.1016/j.jenvrad.2013.07.002.
    [Epub ahead of print]

    Detection of radioxenon in Darwin, Australia following the Fukushima Dai-ichi nuclear power plant accident.

    Orr B, Schöppner M, Tinker R, Plastino W.

    Australian Radiation Protection and Nuclear Safety Agency (ARPANSA), 619 Lower Plenty Road, Yallambie, Victoria 3085, Australia. Electronic address:

    A series of (133)Xe detections in April 2011 made at the Comprehensive
    Nuclear-Test-Ban Treaty Organisation (CTBTO) International Monitoring System noble gas station in Darwin, Australia, were analysed to determine the most likely source location. Forward and backwards atmospheric transport modelling simulations using FLEXPART were conducted. It was shown that the most likely source location was the Fukushima Dai-ichi nuclear power plant accident. Other potential sources in the southern hemisphere were analysed, including the Australian Nuclear Science and Technology Organisation (ANSTO) radiopharmaceutical facility, but it was shown that sources originating from these locations were highly unlikely to be the source of the observed (133)Xe Darwin detections. © 2013 Published by Elsevier Ltd. PMID: 23933085 [PubMed – as supplied by publisher]<<