Japan nuclear professor warns melted fuel may NOT be covered by water at Reactor 2

Published: January 20th, 2012 at 8:20 am ET
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Title: First photos from inside Fukushima reactor released
Source: AJW by The Asahi Shimbun
Date: January 20, 2012
Emphasis Added

[...] Endoscope was lowered to scaffolding used for inspection work within the reactor about 4 meters from the vessel bottom [...]

Is Fuel Being Covered?

  • TEPCO had stated that it believed some of the nuclear fuel in the reactor had melted and fallen to the bottom of the containment vessel, but the endoscope did not capture images of it
  • Melted fuel at the bottom of the vessel may not be adequately covered by water, according to one nuclear expert
  • Tadahiro Katsuta, associate professor of nuclear engineering at Meiji University [...] “The water level is lower than estimated, so there is the possibility that the melted fuel that fell to the bottom of the vessel is not being adequately covered by water

Water? Level

  • Water level in the containment vessel may be lower than previously thought
  • Water level could not be confirmed
  • TEPCO officials said it appeared likely that the water level was less than 4 meters from the bottom [They had calculated that the water level was about 4.5 meters]

Read the report here

Published: January 20th, 2012 at 8:20 am ET
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23 comments

Related Posts

  1. *Yomiuri* Experts: Melted fuel may not be covered in water — Far shallower than assumed — Tepco still claiming Fukushima Daiichi in state of ‘cold shutdown’ March 28, 2012
  2. Tepco backpedals on No. 2 water level: “Possibly” 2.8 meters of water inside reactor, had been claiming much higher — Now just “quite unlikely” fuel is exposed January 20, 2012
  3. Yomiuri: Melted nuclear fuel heat causing water to rain down inside reactor No. 2? January 20, 2012
  4. Where’s the Water in Reactor 2? “Our prediction must have been wrong” says Tepco — Yet camera lens “covered in water droplets” -Asahi January 19, 2012
  5. Kyoto Professor: Areas in Reactor No. 2 may be over 100°C — Fuel probably as melted as mud, increasing water injection may move it around — Can’t see inside for decades (VIDEO) February 8, 2012

23 comments to Japan nuclear professor warns melted fuel may NOT be covered by water at Reactor 2

  • jackassrig

    Another professor pontificating. Professional students with PHDs.


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  • James2

    The video is indicative of everything about this industry. It needs to be killed.

    The video shows indications of huge amounts of out of control radiation, massive corrosion, no water, no fuel that I can see –

    And this idiot says:

    “The water level is lower than estimated, so there is the possibility that the melted fuel that fell to the bottom of the vessel is not being adequately covered by water“

    DIDN’T THEY CONFIRM 8 MONTHS AGO THAT THE FUEL BURNED THROUGH THE BOTTOM OF THE REACTOR?

    ISN’T NEARLY ALL EVIDENCE THAT THERE IS NO FUEL IN THE REACTOR? THIS CONFIRMS. WHY NOT JUST SAY IT.

    THEY ARE INTENTIONALLY MAKING THE INFORMATION AS BLURRY AS THE VIDEO…


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    • AFTERSHOCK AFTERSHOCK

      @James2: video aside. What I’m getting from – all – of these reports, is incontrovertible evidence that the nuclear power industry – world-wide – never had any contingency plans for what we’re seeing at Fukushima. It’s as though a bunch of baristas were hired to run this power plant! How is this even possible?! And I don’t want to hear that this will somehow be a ‘learning experience’ for this industry! After seventy years, you’d have thought they’d had enough experience to develop contingency plans. This is nothing-less than revelation being revealed, before our very eyes…


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    • factsoverpanic01

      > The video shows indications of huge amounts of out of control radiation, massive corrosion, no water, no fuel that I can see

      so far correct.

      >And this idiot says:

      >“The water level is lower than estimated, so there is the >possibility that the melted fuel that fell to the bottom of the >vessel is not being adequately covered by water“

      Seems to be a correct observation from this idiot?

      >DIDN’T THEY CONFIRM 8 MONTHS AGO THAT THE FUEL BURNED THROUGH THE BOTTOM OF THE REACTOR?

      1. Your shift key seems to be jammed
      2. Who confirmed this?
      Remark: As far im aware this was assumed based on high radiation mesured in the basement. Sadly The contry producing a stagering ammount of robots have not developed and produced that can work in such a env.

      > ISN’T NEARLY ALL EVIDENCE THAT THERE IS NO FUEL IN THE REACTOR? > THIS CONFIRMS. WHY NOT JUST SAY IT.

      1. Because one does not see something doesn’t mean it isn’t there.
      2. the strong radiation inside the reactor (see video snow due to radiation.) Would confirm that radioactive material (fuel) is still inside the reactor if all fuel is inside is a diffrent question.

      > THEY ARE INTENTIONALLY MAKING THE INFORMATION AS BLURRY AS THE > VIDEO…
      1. Yes at this point I partily agree with you. Information politic in any such event is always very shallow. No matter it is the US/Russia/UK/Germany/Japan. We will keep to see information to be published slowly and in many cases maybe to late to recommened the right thing to do.


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      • AFTERSHOCK AFTERSHOCK

        @factsoverpanic01: regarding point 2: “the strong radiation inside the reactor (see video snow due to radiation.) Would confirm that radioactive material (fuel) is still inside the reactor if all fuel is inside is a different question.”

        This is an assumption. Residual contamination can contribute to this noise. That core could be completely empty of the fuel, yet remain radioactive enough to induce interference within the imaging equipment…


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        • factsoverpanic01

          >This is an assumption. Residual contamination can contribute to >this noise. That core could be completely empty of the fuel, >yet remain radioactive enough to induce interference within the >imaging equipment…

          Right. It seems we all assume to much :( I hope we get real information instead of interpration of information pieces.


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          • AFTERSHOCK AFTERSHOCK

            @factsoverpanic01: I agree. Unfortunately, it’s becoming all-too-obvious that they intend to hold-out on informing the general public as to the severity of this incident; which, curious enough, lends itself to speculation and opens the door to the very thing they’d want kept out…


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        • Just to make the proper distinctions, the endoscopy was NOT of the reactor vessel, but of the bulb-shaped concrete (with steel lining) containment vessel. Which is where they figured the core was since it wasn’t in the reactor vessel since March. They have been pumping tons of water into the containment vessel in hopes of covering the corium they figured is on the floor. They have also been pumping nitrogen into the containment to counteract explosive hydrogen buildup from water that does happen to reach the corium.

          If it were me, I’d have drilled into the torus, which is more likely where the corium went, as well as where the water is going. What water that is not flashed to steam or gas and vented back into the containment atmosphere (carrying all that radiation for ‘snow’) is leaking somewhere else. Which the corium is quite likely to have done as well, given that the torus is nowhere near as sturdily built or underpinned by massive concrete shielding as the containment structure is.


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      • patb2009

        the dynamics of this would argue the fuel is in the basement or groundwater. The remaining traces are enough for this intense radiation enviroment.

        once half the fuel is meelted, there is no way to get cooling and the melt runs away.


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  • maaa

    Why dont they film the bottom of the Containment Vessel. We love to see how far the fuel has melted through the concrete.


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  • Finch Finch

    Have you seen the video? They change the angle of the view, but the white fast moving white lines is steam! And it looks like a gigantic steam organ! hahahahahaaaaa just put water in, then the sound of this atomic calliope will definitely change! The steam coming from the ground-water, of course.


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  • MaidenHeaven MaidenHeaven

    If radiation is still spewing to some extent from at least 4 reactors how could this possible?
    “The No. 2 reactor was chosen for the first endoscope survey because radiation levels *were comparatively low…”

    “The road map for decommissioning the reactors that was released toward the end of last year by the central government and TEPCO said the removal of melted nuclear fuel would begin after about 10 years. A more detailed survey of the inside of the containment vessel is set for about 2017, and a similar survey of the pressure vessel has been set for about 2019.”

    “On 24 March, three workers were exposed to high levels of radiation which caused two of them to require hospital treatment after radioactive water seeped through their protective clothes while working in unit 3. Based on the dosimeter values, exposures of 170 mSv were estimated,[89] the injuries indicated exposure to 2000 to 6000 mSv around their ankles.”

    “Though the size of more recent leaks is now unclear, it appears radiation is still streaming out of the plant, underscoring TEPCO’s inability to get it under control.

    Dr John Price, formerly of the Safety Policy Unit at the UK’s National Nuclear Corporation, said that he saw no end in sight to the process of pouring water on to the rods in a bid to cool them.

    ‘As the water leaks out, you keep on pouring water in, so this leak will go on for ever,’ Dr Price told ABC News in Australia.

    ‘There has to be some way of dealing with it. The water is connecting in tunnels and concrete-lined pits at the moment and the question is whether they can pump it back.

    ‘The final thing is that the reactors will have to be closed and the fuel removed, and that is 50 to 100 years away.

    ‘It means that the workers and the site will have to be intensely controlled for a very long period of time.’


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  • MaidenHeaven MaidenHeaven

    3rd May 2011

    Among the measurements called into question was one from Thursday that TEPCO said showed groundwater under one of the reactors contained iodine concentrations that were 10,000 times the government’s standard for the plant, the safety agency’s spokesman Hidehiko Nishiyama said.

    We have suspected their isotope analysis, and we will wait for the new results,’ Nishiyama said, adding that the agency thinks the numbers may be too high.

    TEPCO has conceded that there appears to be an error in the computer program used to analyze the data and that recent figures may be inaccurate. They have indicated they are probably too high but .*have also said that the figures may be correct, despite the glitch…

    http://www.dailymail.co.uk/news/article-1371793/Japan-nuclear-crisis-Fukushima-plant-entombed-concrete-radiation-leak.html


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    • How much radiation (TOTAL) is in the groudwater under Fukushima, from all isotopes?

      Just saying 10,000 times normal iodine is meaningless trivia and minutia.

      Am I the only person in the whole world who want to know?

      It should be easy to calculate.. Just drill some test wells on site, test the water collected, and extrapolate the results for a plume of radioactive water traveling underground to who knows where?

      It is obvious that they do not want to go there….


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      • jdotg

        Federal regulations for I-131 in drinking water state it can be at a maximum level of 3 pCi/L

        or 3 pico-curies per liter. Pico being 10 to the negative 12.

        Or .000000000003 curies per liter. < that number multiplied by 3.7×10 to the 10th gives you the amount in becquerels

        3 pCi = .111 becquerels per liter *10,000 =

        1110 Becquerels/ liter. 10000x our federal limit.

        Not that hard. Just remember that is for Iodine only. A becquerel is a very small amount. Often why you see it with tera and giga and mega prefixes.


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  • MaidenHeaven MaidenHeaven

    TEPCO has conceded that there appears to be an error in the computer program used to analyze the data and that recent figures may be inaccurate. They have indicated they are probably too high but …*have also said that the figures may be correct, despite the glitch…

    Tepco didn’t completely give in to the pressure to *lower the figure.

    Although now they have *conceded that All the data they acquire MUST be lower & all the programs & hardware used are having *errors.

    Errors caused by the extremely high radiation readings & the intentional misleading & lowering of the true results.


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  • I wonder where all of the water is going to go? They are using up all of the room on site to store highly contaminated water, after they ‘decontaminate’ the cooling water..

    Anyone know how much room is left and what the long term plan is for ‘disposal’ of this water?

    How much total radiation is in this water anyways, ALL isotopes, not just one.. ?

    Does anyone care?

    Does anyone in government, the nuclear regulatory agencies, or anyone else even bother to ask the question?


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  • MaidenHeaven MaidenHeaven

    I do care AGreenRoad but know that there is no way we will be told the truth, no matter how transparent they *appear to be. I Know that it is extremely high without ever knowing the measurement. I know that everything I eat, drink & breathe is poisoning me in one way or the other. A number will not prevent the cancer nor stop the poisoning.

    I share the information I learn & discuss with those who will listen. I learned with those whose eyes glaze over to briefly mention 1 bit of new information or repeat a *tidbit at another time. Then immediately change the conversation. When I am in public talking with those that are interested I will talk louder than I normally do when others are near. And I have seen strangers *listen in. I also consider that most have no reason to be able to understand the *numbers. So simple terms works great.

    Also many people have been brainwashed & mesmerized by TV’s & entertainment. And with about 7 International companies owning 94% of every form of media I am not going to *break through. Except for that brief simple *tidbit that I manage to throw in.


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  • bleep_hits_blades

    One can frantically paw through the details and evidence as they leak out/emerge, and are spun when they escape containment, but the basics of the situation loom — unavoidable, self-evident … conclusive…

    HUGE amounts of radionuclides are ‘on the loose’ and more being emitted day and night. Situation totally and permanently out of control. Pandora’s box is a pretty good image for/of it.

    Contamination (on-going, in increasing levels/concentrations) is in air, water, soil, food, etc. etc. etc., spreading globally, will not go away, will be endlessly ‘recycled’ for the lifetimes of the various isotopes.

    Those involved/responsible had no ‘plans’ beyond making money and, it appears, reducing the human herd’s numbers, by means of this very reckless, sloppy, risky method that takes with it much of the other life on the planet and plays dice with the viability/continuance of the entire planetary biosphere. Oh, well, win a few, lose a few – right, compadres?

    The various talking heads and mouthpieces are flying by the seat of their pants, struggling to come up with artful lies, evasions, and half-truths. They are working overtime, making it up as they go along. All of TPTB globally are colluding/scrambling to hide all of this from the cud-chewing, football- and pop-culture-besotted public.

    Yes, Virginia, as usual, the masses, the public, are out to lunch, as easy to deceive as a bunch of kids (and as hard to enlighten) – in short, as usual, IN DENIAL. Go away, go away, with your info because they do NOT want to know.


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