Nuclear Industry Website: Recriticality test detects “very low traces” of fission products at Reactor No. 2 — Tepco then injected boric acid as a precaution against chain reactions

Published: February 7th, 2012 at 12:07 pm ET
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Title: Stabilisation after Fukushima cooling change
Source: World Nuclear News
Date: Feb 7, 2012

[...] Tepco was able to discount recriticality as a potential cause of the temperature rise after conducting an analysis of charcoal filters in the containment gas control system. These showed very low traces of fission products that were below the threshold that would indicate criticality. Nevertheless Tepco this morning injected boric acid into the reactor vessel as a precaution and increased the core spray injection rate by three cubic metres per hour. [...]

Read the report here

*World Nuclear News “is supported administratively and with technical advice by the World Nuclear Association”; The WNA is “supporting a fast-globalizing nuclear industry”

Published: February 7th, 2012 at 12:07 pm ET
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23 comments

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23 comments to Nuclear Industry Website: Recriticality test detects “very low traces” of fission products at Reactor No. 2 — Tepco then injected boric acid as a precaution against chain reactions

  • TheWorldIsBlind

    bullshit lies those filters were probably coated with fission products


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  • hbjon hbjon

    Look. Their just going to have to see if, in fact, the fuel did coagulate into the hypothetical corium phenomenon and if they are somehow accesible to a device that can cool and shield them from humanity. However, disturbing any hypothetical self-containment may be counterproductive. Divide the problem into as many tiny parts that are required for a successful outcome. Even if they have to remove fuel, one rod at a time (assuming there is undamaged fuel that is still underwater). Once the coriums have been located (and they don’t know how many of them there are) and cooled to a value under the melting point of lead, they can go about the business of shielding them in some sort of lead cacoon. Can you imagine? The project would be one of the wonders of the world, no doubt. On the side away from the coast, they dig out a landfill. Line it with cement and lead plating. Make a bed of sand and boron. Pull the complex apart piece by piece and drag it into the pit. Cover the debris with used tires filled with sand and boron. The used tires can be rolled into the landfill via ramps. Top it off with fertile soil and plant sunflower.


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    • mikey

      hbjon- The used tires can be rolled into…. giant dube-wahs and smoked! really thats ur solution?? Did u not watch any explosions at all- Did u not see the infrared shots of coriums under the basements- do u actually believe that intact rods are just chillin in completely annihilated reactors? Where is the sense in that. Technology to move any of the nuke puke has not been invented yet (per Tepco shills) and even super rad cams that can handle up to 1000 SEIVERTS have become toast after just 20 or 30 minutes of inspections in the wrecked hulls of what used to be the reactors- Did I mention the ongoing fission events…


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  • Kevin Kevin

    “Very low” fission….. phew…. i thought it might been something to worry about.


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  • Wreedles Wreedles

    If the water isn’t getting to the corium, why would they think that the boric acid would get there?

    Isn’t the definition of insanity ‘doing the same thing over and over and expecting different results?


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    • hbjon hbjon

      Actually, that is not the definition of insanity. Because there is always a subtle difference in an action taken. For instance, the last time they tried it someone noticed an oompa loompa was not smiling. Now they have everyone smiling, like in a photograph.


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  • bleep_hits_blades

    1. This short RT interview with Michel Chossudovsky is an xlnt summary of history and present situation re Iran war planning/build-up by NWO planners.

    http://rt.com/news/us-iran-ww3-chossudovsky-025/

    2. The ‘race to destroy the planet’ – absolutely stellar interview with Alex Jones and Matt Stein

    http://www.infowars.com/matt-stein-400-chernobyls-solar-flares-emp-nuclear-armageddon/


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  • many moons

    “very low trace amounts” the redundency leads me to believe…otherwise


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    • StPaulScout StPaulScout

      The containment structures have been compromised. All of them. The cores have melted through and out. They don’t know where the melted cores are, they admited to that already. They can’t possibly know how hot they are if they don’t know WHERE they are. They can’t possibly pour water on them if they don’t know where they are. How can they possibly measure how much radiation is coming off of them? The fact that, ‘very low trace amounts’ CAN be measured suggests to me that IF the knew WHERE to look, and WHERE to measure, the numbers would most probably be way the fuck higher….. Think about that for a bit.


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  • moonshellblue moonshellblue

    Very low traces kind of like low traces of radiation detected nothing to worry about. The nuclear industry will say and do anything to protect their interests. NO NUKES


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  • Cataclysmic Cataclysmic

    ok.. so according to the press release, …they measured gas control system for unit 2, and found:

    … “we confirmed that the concentration of x-135 was below the detectable level…” it goes on to say “…continuing to monitor the trend as it is still showing a high value.” (how can there be a higher trending measurement for something that was below detectable levels of measurement?)

    ..and further states, “we injected boric acid as a safety measure against recriticality..”

    so.. we measured no xenon, but trend continued rising in the unmeasured xenon, so we added boric acid to prevent recriticality.

    dang, translating tepco speak is tiring

    (reposted from another thread) press release here http://www.tepco.co.jp/en/press/corp-com/release/12020703-e.html


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  • PattieB PattieB

    Spokes-sham person: I can neither confirm nor say for certain… that the was no reading on the messurments we have just made.

    As we are interested in you safty, we shall inject more acid into the core to be safe.

    I can neither confirm, nor say for certain… that such acid will or will not eat the plastic pipes used to cirulate and or filter the water.

    I CAN say for certain… that everything is fine! (BIG SMILE!)


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    • Cataclysmic Cataclysmic

      oh..and don’t forget the nice saying at the end of the status of reactor 4,5,and 6(from press release)

      “At this moment, we don’t think there is any reactant coolant leakage inside primary containment vessel.”

      very reassuring eh?

      ..and does this mean they are certain(or think) there are leaks at 1, 2, and 3?


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  • PattieB PattieB

    Hmmm… well…? If you are using the water from the basement of #5 reactor to water the grounds…? IS that classed as a leak issue?


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  • PattieB PattieB

    and as there’s problems they haven’t a clue how to deal with, so have called the manufactures….

    It a resorce managment issue, not a nucular oversite issue, isn’t it?
    (ROLLS EYES!)


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  • TerraHertz TerraHertz

    I’d be happier if they did an analysis of gasses tapped directly from the bottom of the containment structure. Via the same hole they recently used to perform the ‘camera inspection’. It’s down there below the pressure vessel, that any melted fuel might be attaining criticality.

    We don’t know where different parts of the system are venting too, or where gasses passing through those charcoal filters might have come from.


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