Published: September 24th, 2012 at 9:04 pm ET
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Unit 3 Spent Fuel Pool (SOURCE: Tepco)
Unit 3 Spent Fuel Pool’s nuclide analysis results from September 23, 2011:
Cesium 134: 2.5X103 Bq/cm3 (2,500,000 Bq/liter)
Cesium 137: 4.2X103 Bq/cm3 (4,200,000 Bq/liter)
Watch newly released footage of Tepco’s underwater survey at Fukushima Daiichi Unit 3 Spent Fuel Pool here
Published: September 24th, 2012 at 9:04 pm ET
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I could have sworn I saw Arnie in scuba gear duck behind on of the racks. It looked like he was giving the finger to the video camera. Maybe it was just a piece of rebar…
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Very clearly fuel assembly handles. Any additional thoughts about what blew up Unit 3, Arnie? I don't get how the upward force of the Unit 3 explosion could have left behind intact fuel assemblies, had that explosion originated in SFP3.
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Here's my version: http://everist.org/archives/Fukushima/20120430_Message_of_Fuku3.htm
Also: http://everist.org/archives/Fukushima/comparison_preview6.png (PROVES the visible upward jet was from the SFP.)
Summary- the sequence in Unit 3 was: hydrogen explosion, pressure wave compressed steam and/or water bubbles in top of SFP, resulting in brief prompt criticality around partially exposed fuel rods. Resulting neutron pulse flash boiled a volume of water. As that water expanded to steam, a new area of fuel rods reached brief prompt ctiticality. This process repeated once more. Hence the three bangs – the first is the hydrogen explosion and immediate 1st criticality. Then 2 more criticalities.
Result is immensely powerful upward focused jet of steam mixed with concrete dust – gray-brown. The fuel rods are mostly still in place, since the flash boiling water volume around them applied balanced pressure and can't push upwards on the rod sides. The criticality pulses were very brief, as they only could occur during a moment while the boiling water/steam mix was at the right average density for correct neutron moderation to sustain fission.
The reactor containment vessel is also breached at top and bottom by overpressure and meltdown respectively, but that wasn't the origin of the main explosion.
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A jet-stream that ejected the most poisonous material this planet will ever known, to all over the region.
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TerraHertz: Many thanks for your analysis, which I read with interest when you originally published it. We agree on most of the key concepts. "SFP Firecracker String", the fact that the human race does not possess the intelligence to safely design and run nuclear plants. A future possibility where Japan and all of humanity, our institutions, and our technologies, for whatever reason, devolves below the point necessary to care for reactors and spent fuel pools. Where the cascade of failures from one plant to the next, from one nation to the next, takes out all 400+ reactors all over the world, leaving Planet Earth covered with a gray radioactive substance.
I have a deep and abiding feeling, however, that I did not come here merely to observe the decline and fall of the human race. I have always felt that I came here to witness something wonderful, a transformation, an upliftment. We shall see what actually unfolds. But you are right, TerraHertz, we are walking a fine line, right on the edge, with hundreds of NPPs full of design flaws, operated by fallable human beings.
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12 reasons why all nuclear power plants must be shut down; via A Green Road http://agreenroad.blogspot.com/2012/03/12-reasons-why-all-nuclear-power-plants.html
Super Solar Storm To Hit Earth In 2013 'Carrington Effect'; 400 Nuke Plants Will Melt Down/Explode; via A Green Road http://agreenroad.blogspot.com/2012/03/super-solar-storm-predicted-to-hit-2013.html
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Yes, you can see the handle to the spent fuel bundles but all the debris on top of them does not resemble the first video of this pool. I don't know if the beam that slipped in recently disrupted debris or stirred it up but this look like a heck of a mess and very tricky to remove the fuel.
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They are going to clean this up how?!?
There isn't a big enough vacuum cleaner to clean this mess up.
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It is all right here, EPA proof of the uranium aerosolized, and thus the plutonium since they go hand in hand in a MOX plant which is what went critical at Fuku 3
http://nukeprofessional.blogspot.com/p/uranium-aerosolized-into-atmosphere.html
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Not 100% it's even 3. It lools like crystals.
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Lools= looks
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Investigation of the inside of Unit 3 spent fuel pool at Fukushima Daiichi Nuclear Power Station – 4
Published on Sep 13, 2012 by Enformable
http://www.youtube.com/watch?v=qcvX5EHdQLQ&feature=relmfu
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Remember Unit 4's pool is carrying about twice the load it was designed for and offloaded fuel from the reactor core sitting in the pool now is much hotter than normal spent fuel.
Unit 3's pool has typical stored fuel assemblies in the cooler stages of storage. The longer all the pools remain without losing their water, the cooler the fuel gets. Arnie says about five years is needed from reactor core removal to a final transfer to air cask long term storage.
I'd figure out a way to lower the complete pool down to ground level using hydraulics underneath, put wheels on it and tow it away.
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