[ RadSafe ] New Meltdown Byproduct Found Far From Fukushima Daiichi

Sat Feb 6 19:02:26 CST 2016

Radafe/McCarn,

     Maybe now someone will get you one of those small helicopters (UAV) to
hang your scintillation
counter from.

     Joe Preisig

On Sat, Feb 6, 2016 at 6:07 PM, Dan McCarn <hotgreenchile at gmail.com> wrote:

> Hi Peter:
>
> Back in '86 following Chernobyl, I did several hundred line-kilometers of
> horseborne scintillation counter traverses in Wein- and Wald-viertels in
> Lower Austria. I also found one hot particle. Wet and dry deposition
> (washout & fallout) areas could be easily distinguished.
>
> Dan W McCarn, Geologist
> 108 Sherwood Blvd
> Los Alamos, NM 87544 USA
> +1-505-670-8123
> Sent from my iPhone
>
> > On Feb 6, 2016, at 10:14, Peter Bossew <peter.bossew at reflex.at> wrote:
> >
> > Both is correct.
> >
> > How the radio-caesium containg spheres were generated has not yet been
> > clarified to my knowledge.
> >
> > Black dust: typical results of radioecol. concentration processes, quite
> > common. Large amounts of similar blackish matter can be found on Alpine
> > glaciers (in that context called cryoconite), with partly very high
> > concentrations of Chernobyl and even global fallout.
> >
> > In Japan, I used such samples to identify Pu from Fukushima quite far
> away
> > from the NPP. If I remember well, the fathest distance from the NPP where
> > such matter has been found, is the Yokohama area S of Tokyo.
> >
> >
> > Peter Bossew
> >
> >
> >
> >
> >
> >
> > "The International Radiation Protection \(Health Physics\) Mailing List"
> > <radsafe at health.phys.iit.edu> schreibt:
> >> This looked like it might be solid scientific article, then I noted
> >> that it was discussed on RADSAFE three years ago, so it is hardly new
> >> and I found no actual scientific journal article.  It also has been
> >> put out by Gundersen's Faire Winds so I wonder just how solid the
> >> science is.
> >>
> >> Roger Helbig
> >>
> >> ---------- Forwarded message ----------
> >> New Meltdown Byproduct Found Far From Fukushima Daiichi
> >>
> >> by dunrenard (French anti-nuclear activist who never seems to use his
> >> real name - typical of activists - never stand behind what they claim
> >> to be true because someone could disprove it)
> >>
> >> Another type of material has been found by researchers that is tied to
> >> the meltdowns at Fukushima Daiichi. We have reported extensively over
> >> the years on the finding of “black stuff” around mainland Japan. This
> >> is a highly radioactive black sand like material that had gathered in
> >> gutters and roads as far away as Tokyo. Analysis of materials of that
> >> type has linked them to the meltdowns inside the reactors at Fukushima
> >> Daiichi. This new finding is also linked directly to the reactor
> >> meltdowns.
> >>
> >> Photo of black sand substances found in Namie, from research paper by
> >> Marco Kaltofan. Photo credit Marco Kaltofan.
> >>
> >> Researchers in Japan found new materials they described as tiny
> >> spherical glass particle that was highly radioactive. These glass
> >> particles are structurally quite different from the “black stuff” but
> >> they also bear a link back to the reactor meltdowns. A glass particle
> >> labeled NWC-1 was collected from Nihonmatsu in 2011 after the initial
> >> disaster. Nihonmatsu is roughly 40-45 km directly west of Fukushima
> >> Daiichi. The town area sits south of Fukushima City and north of
> >> Koriyama. This area is well outside the evacuation zone and is
> >> currently occupied without restriction.
> >>
> >> These glass particles include high levels of radioactive cesium.
> >> Researchers found that the radioactivity was highest in the center of
> >> the particle, indicating the cesium was incorporated into the glass
> >> particle during the molten phase of the meltdown. The glass particle
> >> also contains materials that indicate it includes either concrete from
> >> the containment vessel or seawater that was injected. This is
> >> significant as it shows this material was formed after the melted fuel
> >> burned through the reactor vessel and had begun burning the
> >> containment vessel concrete floor, or it formed after seawater was
> >> injected. The seawater injections were fairly late in the meltdown
> >> progression and newer research shows all or most of that water flowed
> >> the wrong direction and didn’t make it to the reactor vessels. The
> >> timing of the creation of these glass spheres would be between the
> >> time of the first reactor vessel failure and the start of seawater
> >> injection then thereafter. This may help in the future to identify the
> >> specific reactor and event that may have created these spheres.
> >>
> >> Photo of the glass sphere from Nihonmatsu, from the Yamaguchi et al
> study.
> >>
> >> Cross section of the NWC-1 glass sphere from Nihonmatsu, photo credit
> >> Yamaguchi et al.
> >> The location of the found particle in Nihonmatsu is unexpected. A
> >> second glass sphere was found on a cedar leaf in Fukushima, specific
> >> area not mentioned. Nihonmatsu is directly west of the plant and not
> >> in the documented plume paths that developed north-west and south of
> >> the disaster site. This appears to indicate that materials from the
> >> reactors themselves were transported far further than initially
> >> claimed. These glass particles are small enough in size to potentially
> >> be inhaled. Right now researchers do not know the extent or geographic
> >> spread of this material. It does show that direct materials from
> >> inside the reactors did leave the buildings and were distributed over
> >> a long distance. Due to the high radioactivity within these glass
> >> spheres they could pose a significant health risk.
> >>
> >> We put together a rough comparison of the properties of the two
> >> reactor meltdown byproducts. This is not a definitive list. Please
> >> refer to the original studies for further information.
> >>
> >>
> https://docs.google.com/spreadsheets/d/1RAbsClYl3KIZkHeI1don3Zfe_AYBKF_vW3C7tWlIpXw/edit?usp=sharing
> >> Full Study:
> >> Yamaguchi, N. et al.
> >> Internal structure of cesium-bearing radioactive microparticles
> >> released from Fukushima nuclear power plant.
> >> Sci. Rep. 6, 20548; doi: 10.1038/srep20548 (2016).
> >> Black Stuff Analysis:
> >> Radiological Analysis of Namie Street Dust
> >> Marco Kaltofan
> >>
> >> Source: http://www.fukuleaks.org/web/?p=15283
> >>
> >>
> http://nuclear-news.net/2016/02/06/new-meltdown-byproduct-found-far-from-fukushima-daiichi/
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> >
> >
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