Published: September 7th, 2012 at 12:20 am ET
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Tepco: At 10:30 AM on September 4, in order to examine the case of the intermittent increase in hydrogen density and noble gas (Krypton-85) density measured by Unit 1 RCV gas control system, we injected the nitrogen to the upper part of the pressure suppression chamber in which hydrogen is supposed to be accumulated from the nitrogen injection line laid on the 1st floor of reactor building, and pushed out the accumulating hydrogen and the Krypton-85. We accordingly started confirming the presence of hydrogen and Krypton-85 at the upper part of the pressure suppression chamber utilizing the gas control system. At 4:37 PM on the same day, we stopped the nitrogen injection to the upper part of the pressure suppression chamber. The hydrogen density of Unit 1 RCV was 0.54% as a result of this work (as of 11:00 AM on September 5). Since it is below the flammability limit (4%), there is no problem.
h/t Fukushima Diary
Published: September 7th, 2012 at 12:20 am ET
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I think it is more...
sending...
Shame on you hydrogen.
Shame on you oil.
$> sarcasm off.
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Releasing Krypton-85 is a problem. It causes extreme weather events and contributes greatly to climate change.
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Anne, weren't we just discussing Krypton-85? I posted this press release from tepco in response yesterday.. I still wonder what exactly is meant by intermittent increase in density …pressure cooker? Seems like they were able to push it out of the line into the upper suppression chamber were the gas control system managed it..aka released the pressurized gas into the environment???
Of course the rest of the story is the additional entry for the 4th, that has been recently added..??? It was not there yesterday!
Wait for it…
At around 12:00 AM on September 4, a high rate of temperature increase (step-like increase by 1.6℃) was detected on Unit 2 RPV bottom temperature monitoring thermometer (Included in the technical specification (Article 138/143) watch list, VESSEL BOTTOM ABOVE SKIRT JOT (TE-2-3-69F2)). Due to this, a direct current resistance measurement was performed on the thermometer from 11:15 AM to 11:24 AM on September 6. As a result, the direct current resistance (209.34Ω) was found to be 30% or more compared to the minimum direct current resistance measured after the accident (117.84Ω). A temperature trend evaluation (secondary evaluation) will be done to determine whether the thermometer will be used as a reference thermometer or judged to be broken.
any bets on another broken thermometer??? why is it that the thermometers always break at higher readings and never occur broken when reading low???
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Krypton-85 (or any other noble gas radionuclide) release is never good. But the detrimental environmental effect pales in comparison to what the presence/measurement of Kr-85 means *now* for this reactor.
Kr-95 is the most active noble gas radionuclide starting about a day after a criticality.
Xe-135 activity is dominant 10 – 15 minutes after a criticality.
Xe-133 at about two hours
You can roughly approximate when a criticality occurred and how much material was involved *if* it only happened once and the gasses are carefully measured. Your mileage may vary if you're doing this on an amorphous blob of corium dozens of meters below ground level headed toward Argentina.
But look at the bright side: it's probably burrowed below all the aquifers by now and covered by a radioactive column of nice, fresh water. Heck, it would take something like a nuclear explosion to vaporize all that water and blast it into the Japanese skies. I mean… what are the chances of THAT happening?
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Sorry – forgot this informative link. Japan's Tokai plutonium factory blew up and their scientists thought it would be a good idea to monitor noble gasses outside the stack after that. This wasn't after the first criticality accident in 1997. The paper is (I believe) in response to the second one in 1999. A vat of nitric acid and uranium dioxide sort of self-boiled for twenty hours while repeatedly going critical. Many radionuclides were spewed. Plutonium Boy was seen running from the building screaming at the top of his lungs just before the 'event'.
https://docs.google.com/viewer?url=http%3A%2F%2Firpa11.irpa.net%2Fpdfs%2F3h44.pdf
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Tokai And Rokkasho Reprocessing Plants History, Accidents And Dangers; via A Green Road
http://agreenroad.blogspot.com/2012/06/rokkasho-reprocessing-plant.html
Dr. Ivan Oelrich; Nuclear Spent Fuel Reprocessing Greenwashing; via A Green Road http://agreenroad.blogspot.com/2012/06/dr-ivan-oelrich-nuclear-spent-fuel.html
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HEY MR TEPCO-YOUR REACTOR NR 1 IS STILL LEAKING SOMETHING-DON'T U KNW? – (h/t nuckelchen)
http://www.youtube.com/watch?v=vLhb1W2lBm4&feature=youtu.be
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Here's a data sheet about Krypton-85
http://www.spectragases.com.cn/pdfs/MSDS/lighting/MSDS_Krypton85BalanceInertUN_2915-1163B__050708.pdf
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Somehow nitrogen captures radiation. I wish I knew more about this. Nitrogen capture is what I read about.
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Krypton, Shmypton! Why don't they fix the reactors with a well-known, proven and healthy solution: Corexit.
Inject it in the reactor
Douse the containment
Flood the reactor building
Spray on contract workers
Fill the kiddie pool
Sprinkle on pets
Put it in management's miso
Problem solved. Why try to re-invent the miracle of Corexit??
Bonus: Japanese own 20% of the Blackstone Group, which owns Nalco – the makers of Corexit and other green products. This could boost Japan's sagging economy. And if that doesn't work, round up the Japanese consumers and hose them down with Corexit.
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Among other things, the problem with Corexit is that it makes oil water soluble. Any treated oil can be absorbed through the skin.
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Razz I believe your comment is not wholly accurate, Corexit doesn't dissolve oil, just breaks it down into smaller droplets. This is principally to stop it 'bonding' with it's neighbouring molecules, and forming a slick which floats. OilCOs are fined by the amount of oil that's recovered. Oil sunk to the bottom isn't usually recovered. It also contains 'bio-remediation agents, which are genetically turbo-charged microbes that naturally occur in the oil-seep environment (like seabed vents). They're 'designed' to mimic natural processes, but on steroids.
However Corexit may react unpredictably with the other bacteria without a recognised DNA code that are being found on fuel rods and in SFPs. Be sure that amongst the other crazy stuff that goes on behind closed nuclear and laboratory doors, that there are also experiments being done on 'mopping up' radio-nuclides with synthetic organisms.
THE GULF BLUE PLAGUE: IT'S NOT WISE TO FOOL MOTHER NATURE (Full length version) – YouTube
http://www.youtube.com/watch?v=m7N3i1T_Js0
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Still releasing Krypton 85? Well, guess what… we just found the ultimate proof of an ongoing fission reaction.
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Agreed, thus I would think the coriums are still extremely hot and oozing where they find the least resistance. I know someone has infrared photos of this and TEPCO must know exactly where the corium is located. They should have geologists, etc creating plans to contain these beasts. I do hope they take Arnie's advice and hire an engineering firm to orchestrate the clean up instead of TEPCO. Should have been done a year ago. IMHO
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No one wants to show the infrared satellite photos..because it will show the dispersal of the underground corium..and also the dispersal in the ocean near Fukushima. SOMEONE is helping hide the facts..Japan Government, China?, USA!!, Russia?
I think China and Russia are looking at Japan like a fat flounder ready to jump into the net. Only the land is desired I think..outlying islands. Less contaminated. I picture lots of chuckling and high fives…Russia has already had its Chernobyl…
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Would the IR photos be able to still show the corium? I guess it's pretty deep already, and shielded by enough meters of earth for the IR images to not be able to detect the heat of it anymore.
Because honestly, if the IR would work, they wouldn't be so clueless about the coriums location.
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"Images of the World Trade Center Site Show Thermal Hot Spots on September 16 and 23, 2001."
http://pubs.usgs.gov/of/2001/ofr-01-0429/thermal.r09.html
Results of Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) remote sensing data and interpretations show the distribution and intensity of thermal hot spots in the area in and around the World Trade Center on September 16 and 23, 2001. Data collected on the 16th were processed, interpreted and released to emergency response teams on the 18th of September, 2001. The September 23 data were processed, interpreted and the results released on October 12, 2001. The images of the World Trade Center site show significant thermal hot spots on Sept. 16, 2001. By Sept. 23, 2001, most of the hot spots had cooled or the fires had been put out.
The AVIRIS instrument is a National Aeronautics and Space Administration (NASA) remote sensing instrument that measures upwelling spectral radiance in the visible through short-wavelength infrared. The instrument has 224 spectral channels (bands) with wavelengths from 0.37 to 2.5 microns (micrometers).
Surely a higher resolution instrument is available…?
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Looks to me someone is in the process of making a hydrogen bomb
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