Japan Earthquake

Japan Earthquake | Page 1239

ok -this may be a dumb question. '• 'Following the hypothetical core meltdown accident, the drywell electric
penetration assembly seals have been identified as the most likely
leak pathway outside of the containment.'
If corium spreads out as Dean seems to think - wouldn't it interact with the concrete separating the containment from the basement - there's plenty of water there at present to cause an explosion.
by UKVal 5/17/2011 9:31:01 PM

@Edano not really - I just mean if it burns through concrete it doesn't have to go far to find water. We know they've slopped water everywhere & more has leaked out. I could have misunderstood the layout - I've seen all the schematics but they don't really show the thicknesses & layout
by UKVal 5/17/2011 9:38:55 PM

Does anyone doubt that this is a view of the primary containment and that it's steaming heavily? www.youtube.com The steam is streaming out from exactly the location we've agreed is the Reactor Well : www.houseoffoust.com
by Ian 5/17/2011 9:39:28 PM

@UKVal : i have never seen any evidence that there is a basement floor beneath the containment. i think it's a phantom. there is only the torus, as far as i can see. but maybe i am wrong.
by Edano 5/17/2011 9:42:15 PM

@Edano There may be a basement level outside laterally from the torus ring. There is an image of workers getting into the torus and it looked like they were entering sideways in, rather than a hatch up top of it. So there could be a basement level to the outside but I would doubt there is a level below it, that wouldn't make sense.
by Nancy 5/17/2011 9:44:11 PM

@Edano - I don't mean underneath I'm thinking horizontal penetration
by UKVal 5/17/2011 9:44:31 PM

@Ian, i agree have thought that since i saw the video first time
by WolfDK 5/17/2011 9:44:49 PM

@Ian I watched the full video you posted yesterday and wondered about that. You can tell on live cam when 3 has steamed heavily in the past that the bulk wasn't coming from the SFP. I don't think there is any doubt.
by LM 5/17/2011 9:45:50 PM

@Ian That was my understanding. That pale yellow door that the steam is leaking around is the tool pit door that connects to the reactor well.
by Nancy 5/17/2011 9:46:02 PM

@Ian I saw that vid again today -it was posted earlier & it seems to confirm Nancy's thoughts on leaking flanges( also CNIC)
by UKVal 5/17/2011 9:46:39 PM

@Bobby1 "Daneben entstehen pro Jahr in Atomreaktoren mehrere Tonnen Technetium aus der Spaltung des Uranisotops 235U; sie haben an allen Spaltprodukten eines abgebrannten Brennelements einen Anteil von etwa 6 %." de.wikipedia.org 99mTc emerges from fission of 235U in npps.
by Edano 5/17/2011 9:47:18 PM

@Nancy : so it would not be likely for corium to find its way to there, if the "basement" is lateral from the torus. i assume it just melts down vertically.
by Edano 5/17/2011 9:51:04 PM

Thanks guys! I'd saved this video a few weeks ago, but only just noticed what it's showing and that it's the only direct view onto the primary containment I know of, and shows it's streaming out steam like a boiling kettle. And point of maximum steam streaming lines up exactly with the hottest spot on the infrared photo (linked in description). And if you look closely you can see that the steam stream is so hot its burned the steel girder above it to black : www.youtube.com That's some really hot steam!
by Ian 5/17/2011 9:52:46 PM

Hiroaki Koide of Kyoto University: "Melted Core Outside the Containment Vessel" ex-skf.blogspot.com
by Bobby1 5/17/2011 9:53:49 PM

@Ian I think when that vid 1st appeared it was so muddled up that we weren't sure what we weere looking at -at least I wasn't. I've always wondered if TEPCO spliced bits together to confuse as it moves form 3 to 4 and back (or vv)
by UKVal 5/17/2011 9:55:54 PM

@UKVal, yeah, and so I chopped out the interspersed Unit-4 clips and added the 'Proof of location' analysis to allay any doubt that it's Unit 3's reactor well that's steaming.
by Ian 5/17/2011 10:02:56 PM

☢ it really seems that tepco baffled even us for two months...
by Edano 5/17/2011 10:07:05 PM

A really honest overview of disaster and implications from a Japanese Nuclear Engineer www.huffingtonpost.com
by Nancy 5/17/2011 10:08:52 PM

@Edano how did you get the little rad symbol to show in your post?
by Nancy 5/17/2011 10:09:26 PM

@Nancy ☢ i copied it from the last youtube link. nice, eh ?
by Edano 5/17/2011 10:10:51 PM

@Ian : well done ! why don't you add the thermal pic to your presentation ?
by Edano 5/17/2011 10:15:25 PM

@Nancy, the code for the radioactivity sign is-> &.#9762; (remove the . from the code)
by WolfDK 5/17/2011 10:17:34 PM

For other HTML & XHTML Special Characters look here: www.edlazorvfx.com
by WolfDK 5/17/2011 10:18:57 PM

@WolfDK : well, there are some 10000 unicode characters (, most of them chinese).
by Edano 5/17/2011 10:20:54 PM

@WolfDK you can also drop it into html code and it will display on output :-)
by Nancy 5/17/2011 10:26:54 PM

The tsunami, in a wide screen format, very intense and powerful. Found it on the IRIS site: freevideocoding.com
by Debra Beckham 5/17/2011 10:29:00 PM

The acutal ascii code for ☢ is alt + 9762 but doesn't work in this blog comment box...
by Rexz 5/17/2011 10:29:44 PM

@Nancy, yep its just ASCII code, and as Edano noted there are lots of em
by WolfDK 5/17/2011 10:30:07 PM

@Nancy look here and play around: www.utf8-chartable.de
by Edano 5/17/2011 10:31:04 PM

@Edano, thanks! Yes, I'm thinking maybe to update the video because the IR image is so spot on wrt the primary steam-release location.
by Ian 5/17/2011 10:31:09 PM