Published: October 1st, 2012 at 8:02 pm ET
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Follow-up to: NRC officials suspected a 'detonation' at Reactor No. 1 weeks before Gundersen postulated that scenario at No. 3
First there was a suspected detonation at Unit 3, then at Unit 1, and now at Unit 4. The distinction between a detonation and deflagration is discussed here: Japanese study says 'detonation' occurred at Unit 3 -- "No containment in the world can withstand a detonation shockwave" (VIDEO)
Via Team H2O Project, director Kenichi Ohmae (http://www.fairewinds.com/sites/fairewinds.org/files/Fuku%20Timeline.pdf):
Page 78
Chronology of Unit 4 […]
3/14
04:08 SFP temperature was confirmed as 84*C.
11:01 Unit 3 explosion
3/15
06:12 (Highlighted Yellow) Huge detonation sound. Reactor building severely damaged (4th & 5th floor)
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If we calculate the amount of hydrogen, which were generated and detonated in No.3, and shifted to No. 4, could the explosion in No. 4 explosion occur?
• TEPCO calculated that the amount of hydrogen generated in No. 3 from the time of meltdown to explosion was about 600-700 kg.
• This amount needs to be sufficient to destroy the floor 4 & 5 of No. 3. and floor 4 & 5 of No. 4. => 12% of hydrogen level destroys 400 mm concrete on 4th floor. 4% of hydrogen level destroys 250 nun concrete on 5th floor.
• Theoretically. 600-700 kg of hydrogen could accumulate in the level above (more than 12% on 4th Fl.. and 4% on 5th Fl.). However, approximately more than 13% of hydrogen level is necessary for detonation [Emphasis Added]. Further verification is necessary.
Nuclear expert Arnie Gundersen explains more about the differences between a detonation and a deflagration here
Published: October 1st, 2012 at 8:02 pm ET
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sending...
Deflagration – is the chemical process where a substance rapidly and intensely burns. This process is generally faster than combustion but slower than a detonation.
http://chemistry.about.com/od/chemistryglossary/g/Deflagration-Definition.htm
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Detonation (aka explosion)
Detonation – is an extremely rapid exothermic chemical process where combustion is driven by the energy shock wave produced by the reaction.
http://chemistry.about.com/od/chemistryglossary/g/Detonation-Definition.htm
Detonation – The sudden and violent release of mechanical, chemical or nuclear energy from a confined space which creates a shock wave that travels at supersonic speeds. Often used interchangeably with explosion.
http://www.chemicool.com/definition/detonation.html
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Uranium found in Hawaii and the west coast.
Reminder: California Air Samples @3:06
University of California, Berkeley
Dated: April, 2011
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Unit 4 reactor severely damaged? But it was empty? No?
Does the writer mean Spent Fuel Pool 4? If so, why not say it? This really is NOT a topic to get the fundamentals wrong on, or mess with the fact of. Waaaaay too much of that, either accidentally or deliberately, already.
Building 4 'morphed before our eyes like Hollywood effects'..slow-mo explosion?
http://www.fukushima311watchdogs.org/share.php?partager=1302
Book: Reactor No. 4 deformed in front of our eyes, says Fukushima worker — Walls morphed like special effects from movie — No large explosion, yet building destroyed
http://enenews.com/book-reactor-no-4-deformed-in-front-of-our-eyes-says-fukushima-worker-walls-morphed-like-special-effects-from-movie-no-large-explosion-yet-building-destroyed/comment-page-1
Methane?
THEORY OF FUKUSHIMA — Finnish Scientist 8 19 2011 (HAARP quake, methane, and radiation).
http://www.youtube.com/watch?v=8ExirT1hUcI
Repost:
Unsquare building -"parallel offset". That ol' TEPKiLL Trapezoid Trick..! I've thought this too since the TEPKILL release of measurements take from the top edge of SFP to the water level, about 2 months ago. Showed that the floor/SFP was pretty level relative to the ground, but omits the other part of the picture that the whole building has shifted sideways. This is pretty clearly visible (IMHO) in these pics from the very highly recommended source simplyinfo.org:
http://www.infiniteunknown…
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oops, cut off last comments URL:
http://www.infiniteunknown.net/2012/01/17/fukushima-reactor-building-4-severely-leaning-new-photos/
Unit 4 Fukushima Soil Work Being Done Near Major Building Crack
http://www.simplyinfo.org/?p=5884
More diagrams from TEPKILL PR: http://modernsurvivalblog.com/current-events-economics-politics/fukushima-building-4-is-bulging-and-leaning/comment-page-1/#comment-29056
Borax [Part 2] – Safety experiment on a boiling water reactor
http://www.youtube.com/watch?v=yUhVGH-WHKk&feature=relmfu (h/t http://nukeprofessional.blogspot.com.au)
Compare the boil up with the last frames of this clip of SFP4: Scary video of reactor 4 Fukushima
http://www.youtube.com/watch?v=SYNGxWWG6K4
A few milliseconds to go 'super critical'?
"The rest of the experiment will be observed from a greater distance"…but too bad if you're downwind, or need to eat or drink during the rest of your life..
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A good place to start on a very complicated subject-blast and explosions-is "Technical Note #8" of the Fire and Blast Information Group (FBIG) the Steel Construction Institute.
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Was I the one that coined the term "dirty H bomb"? Let me help you all with that. Yes I was.
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How Dangerous Is 400-600 Pounds Of Plutonium Nano Particle Dust Liberated By Fukushima? Via A Green Road http://agreenroad.blogspot.com/2012/03/how-dangerous-is-400-600-pounds-of.html
Karen Silkwood, An Anti Nuclear Industry Matyr; via A Green Road Blog http://agreenroad.blogspot.com/2012/09/karen-silkwood.html
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this is exactly my science specialisation. Let's make it clear once and for all :
1/ u cant have a detonation under 18% hydrogen in dry air.
2/ u cant have an accelerated deflagration (that can be as destructive as a detonation for concrete based buildings) under 13,5% hydrogen in dry air.
if air is not dry, higher concentration (up to +1%) is required.
The most destructive phenomenon is not detonation, but deflagration to detonation transition. It can happen with accelerated deflagration being concentrated by building shape, with under 18% deto cap (but still under investigation).
The main issue is that u'll never know the average amount (and thus, the concentration) of hydrogen produced in any nuke accident. Nuke = Military = SECRET, just put that fact in your head.
(oh yeah, btw : good luck to have a real deflagration under 8% hydrogen lol)
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Looks to me like an explosion of hydrogen alone could not have produced the damage we have seen at Fuku.
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