New footage from Fukushima Unit 3 shows “large amounts of debris and sediment accumulating on fuel racks” (VIDEOS)

Published: February 21st, 2013 at 2:21 pm ET


Enformable, February 21, 2013: TEPCO released video footage of an investigation into the Fukushima Daiichi Reactor 3 spent fuel pool […] The footage revealed large amounts of debris and sediment accumulating on top of the spent fuel racks which will hinder the flow of water in between assemblies and could cause future cooling problems.

Source: Investigation Results of Unit 3 Spent Fuel Pool Utilizing an Underwater Camera at Fukushima Daiichi Nuclear Power Station (Performed on February 14, 15, 16 and 18)

View the videos here

Published: February 21st, 2013 at 2:21 pm ET


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14 comments to New footage from Fukushima Unit 3 shows “large amounts of debris and sediment accumulating on fuel racks” (VIDEOS)

  • soern

    racks seem to be empty exept debris. Otherwise there should be many black dots in that video caused by heavy radiation.
    Also it seems to be unbelivable those racks to be in that good condition after that well known explosion.
    I'd guess: Fake conmpletely

  • Jay

    ENE , can you please post the videos in a format that doesn't require the toxic Java Scripting to be enabled .
    Thank you !

  • guezilla

    I was wondering if they weren't going to post anything from the week long "examination" they claimed to have done.

    HINDER the flow? That'll completely stop it.

    Colorraly: AT LEAST as much debris will be down on the bottom of the pool blocking convective circulation from end to end.

    Not sure how much of a problem this is when they're all covered in water, it's probably good enough heat conductor, but if those pools were to ever lose water, there'd be no chance of establishing convective air-cooling.

    Bigger worry is, of course, how all the debris interferes with removing the fuel from the pool. Losing water is just a matter of time, that's why they need to be placed somewhere safer as soon as possible.

    I too am surprised by the sudden high quality we're getting, while it's about time. On the other hand if they were faking it, why show so much debris? And if the good quality is indication of fake, does that mean all the poor quality ones were genuine? However, water is very good at blocking radiation, if the water itself is "clean", then the radiation is not an issue for underwater images.

  • tooktheredpill tooktheredpill

    Hi all,

    Read all (don't post very often)

    How come I am able to stabilise these underwater video's in under 5 minutes on a home PC which has got to make them easier for those looking at them and analysing what they're seeing, yet a Multi Million Dollar nuclear company in one of the most technically advanced countries of the world doesn't seem to be able to do this and just works with the 'swaying' footage that a camera dangled underwater provides??

    • Sirius

      Well, someone should first explain to me how a swaying camera is possible in a liquid… Unless the liquid itself is swaying lol.

  • snowwy snowwy

    it looks pretty much the same as the video posted 4 months ago also supposedly of unit 3 SFP. same sway too, only that the water looks clearer. if there was circulation and a lot of fine dust in the pool, would the water not be much cloudier?

  • PhilipUpNorth PhilipUpNorth

    SFP3 pictures show handles from spent fuel assemblies in good condition, in spite of large amount of fine debris that rained down after the explosion. Many posters have pointed to the Unit3 SFP as the source for the explosion. My guess is that the detonation originated somewhere else. Good picture quality, not faked, IMO. Any damage to fuel assemblies from lack of convection cooling is hidden inside the racks for the time being, but will become very evident during fuel removal.

  • AGreenRoad AGreenRoad

    What Really Happened At Fukushima Reactor And Spent Fuel Pool #3? via A Green Road Blog

  • AGreenRoad AGreenRoad

    Dr. Paolo Scampa Reports That Fukushima Released 3,000 Billion Lethal Doses Of Radiation; via A Green Road

  • AGreenRoad AGreenRoad

    They have no choice but to lie, because the entire industry is built on a foundation of deception, secrecy, greed and coverups.

  • Sickputer

    The world wonders…why haven't we heard any details of small pieces of Daiichi fuel debris being examined by the top nuclear scientists of the world? Especially the puppet master Americans?

    I bet the USA has overtly or covertly obtained spent fuel road samples as well as other debris. This Japanese disaster is the biggest event for nuclear physicists since 1986. Since we hear nothing we might jump to the conclusion outsiders have run isotope tests and the results are top secret.

    It wasn't always so secretive. In an earlier time pre-World Wide Web scientists shared research results about spent fuel rods. Take for example this 1988 American study of 176 spent fuel rods from Calvert Cliffs NPP:

    They used spent fuel rods that had been removed from ponds after 6.5 years of cooling. The tests were extensive and quite innovative. They used a laser to burn a hole in the cladding to analyze the gamma gases. Pg. 107
    An XT IBM PC with special software ran the calculations for radioactive decay. Pg. 97

    Tests were extensive: "Characterization data include 1) as-fabricated fuel design, irradiation history, and subsequent storage and handling; 2) isotopic gamma scans; 3) fission gas analyses;
    4) ceramography of the fuel and metallography of the cladding; 5) special fuels studies involving analytical transmission electron microscopy (AEM); 6) calculated nuclide inventories and radioactivities."

  • razzz razzz

    Yeah, those fuel assemblies will just slide right out of there using a little KY jelly.

    The video with parts of the fuel machine laying in there (that they recently pushed in during a removal attempt) sure doesn't help things.

    I think the camera was hanging off a crane cable so it is going to swing around, too hot and too much debris to send in humans at poolside. The other sites at the bottom of the page here have the vids too and I think one links to Youtube for the vids.

    They probably temporarily halt water circulation before they drop the camera in the pool to get a clearer picture after the sediment settles down. I did see a few small bubbles.