Japan Earthquake

Japan Earthquake | Page 2285

good morning and greetings to all
by dean 8/31/2011 1:27:34 PM

The two workers exposed to beta radiation while changing the water filters were using a ladder to do the filter removal. Both received some radiation burns. www3.nhk.or.jp

What kind of design are they dealing with where they have to use a ladder and potentially get wet?
by lillymunster 8/31/2011 1:33:30 PM

@ lilly & Peter. it took 11 years and 1 month to defuel TMI from an article allthingsnuclear.org
by dean 8/31/2011 1:36:30 PM

books.google.com an article on TMI cleanup
by dean 8/31/2011 1:42:49 PM

Dust-sampling Opening of Reactor Building of Unit 2, Fukushima Daiichi Nuclear Power Station (pictured on August 29, 2011): www.tepco.co.jp
@lillymunster Did someone spill the contents of RadioGuy's curry cauldron?
by es via Tepco.co.jp 8/31/2011 1:47:16 PM

americanhistory.si.edu @ lilly.. this is a good historical on TMI good photos and details..
by dean 8/31/2011 1:49:37 PM

Thanks, dean, according to google books you posted, the RPV still resides in the containment at TMI. The final phase of disassembly has not been completed. At Fukushima, the operator must face the challenge of removing the RPV more urgently because molten fuel seems to have relocated outside the RPV. A daunting task.
by Peter Melzer 8/31/2011 2:00:31 PM

right @ Peter.. sounds like the facility will be decommissioned when tmi1 is endof life
by dean 8/31/2011 2:17:55 PM

@ Peter, I would think it would be at least 3 times as long as TMI
by dean 8/31/2011 2:18:21 PM

Found something interesting for unit 3: "We note that the above models have been developed for urania fuel and their applicability in relation to mixed-oxide (MOX) fuel must be evaluated. Limited results from the IPSN programme VERCORS, namely tests RT2 and RT7, show release from the MOX fuel used in France to behave differently from urania fuel where preliminary interpretation would indicate a dependence on the Pu enrichment and/or the linear power to which the MOX has been subjected. It seems clear that the current urania models will require, as a minimum, adjustment."pdfs\pe_309_24_1_eurosafe00_pffin.pdf
by Peter Melzer 8/31/2011 2:40:15 PM

okay: Fission product modelling in ASTEC. M.P. Kissane*, K. Liger*, I. Drosik*, H. Manenc*, B.M. Schmitz** and K. Trambauer** www.eurosafe-forum.org
by Peter Melzer 8/31/2011 2:42:09 PM

34 spots top Chernobyl evacuation standard www.yomiuri.co.jp
by Panserbjorne9 8/31/2011 2:43:25 PM

@ peter, I will check that out after I get back from giving blood..
by dean 8/31/2011 2:44:28 PM

Disaster victims hope Noda will help them www.yomiuri.co.jp
by Panserbjorne9 8/31/2011 2:44:46 PM

New Tepco pdf re flow rates www.tepco.co.jp
by elainekirk 8/31/2011 2:46:15 PM

@ elaine, good afternoon there,,, this looks like a accident waiting to happen.. I'll bet it is such a mess in those plants with all the hoses roped up going every where.. how they keep things straight is anyones guess..
by dean 8/31/2011 2:50:38 PM

be back later
by dean 8/31/2011 2:50:41 PM

@elainekirk tied up with string?
by lillymunster 8/31/2011 2:53:26 PM

@Peter Melzer The other thing I was considering re the RCIC was that the lack of cooling in that brief downtime when the gennies went offline could well have enabled the core temps to rise above manageable levels, with the 'superior' MOX fuel contributing greatly to this.
by es 8/31/2011 3:02:45 PM

@lillymunster yup !
by elainekirk 8/31/2011 3:12:44 PM

@elainekirk ranks right up there with the purple extension cord. :-)
by lillymunster 8/31/2011 3:26:50 PM

Tokyo Earthquake Now More Likely After March 11 Disaster www.ibtimes.com
by Panserbjorne9 8/31/2011 3:33:09 PM

Japanese government killing its own people in Fukushima - YouTube.flv

youtu.be
by Mona 8/31/2011 3:52:22 PM

2 workers showered with highly radioactive water

Tokyo Electric Power Company says 2 male workers at its troubled Fukushima Daiichi nuclear power plant were showered with highly radioactive water by mistake.

The accident occurred on Wednesday morning.
The two subcontracting workers were suddenly splashed with water leaking from a container whose valve was not shut. The container was part of the contaminated water processing system.

TEPCO says one of the 2 workers was found to be exposed to 0.16 millisievelts of radiation, which is higher than the safety limit, and was decontaminated.

The other, who was wearing a raincoat, was exposed to 0.14 millisievelts of radiation, a slightly smaller dose than the other man.

The utility says that the 2 workers did not complain of symptoms such as burns and they had no internal radiation exposure.

TEPCO is investigating how the accident occurred.

Last Sunday, 2 TEPCO workers at the plant were exposed to radiation by mistake while they were replacing parts of the contaminated water processing system, which is key to bringing the crippled reactors under control. [???]

Wednesday, August 31, 2011 22:23 +0900 (JST)
www3.nhk.or.jp
by Edano 8/31/2011 5:01:55 PM

@Peter, catching up. Thanks about awesome video I'm listening now. Is there a way to show it's URL? I'd like to point to it but I can't figure how to find where it's located. It does not appear to be a reactor at Fukushima in the photo, the reactor well in that photo is directly centered on the floor, but at Fukushima it was off-center toward the east side.
by Ian 8/31/2011 5:02:58 PM

TEPCO presents plan to extract melted rods

Tokyo Electric Power Company, or TEPCO, has announced a plan to extract melted nuclear fuel rods at the crippled Fukushima Daiichi nuclear power plant.

TEPCO presented the 9-stage plan on Wednesday to an expert panel of the Atomic Energy Commission, which is discussing a process to decommission the plant's reactors.

The first 3 stages of TEPCO's plan are devoted to removing radioactive materials from the reactors' buildings to repair containment vessels and stop water leaks.

The utility plans to then put water in the vessels and take pictures to determine the amount of nuclear fuel that has leaked from the reactors.

In the final stage, the company plans to fill the vessels with water and use robots to extract the rods.

Extraction of fuel rods that have leaked outside of reactors has never been performed at any nuclear plant.

TEPCO faces the tough challenges of coping with high levels of radiation and developing highly efficient robots.

Wednesday, August 31, 2011 20:38 +0900 (JST)
www3.nhk.or.jp
by Edano 8/31/2011 5:04:38 PM

nonsense.
by Edano 8/31/2011 5:05:41 PM

@Edano Sorry, I'm still in stitches from "extract the rods"
by RadioGuy 8/31/2011 5:06:18 PM

Farmers in 11 prefectures seek damage from TEPCO

Farmers' groups from 11 prefectures in eastern Japan have sought fresh damages totaling nearly 140 million dollars from the operator of the troubled Fukushima Daiichi nuclear plant.

Groups of farmers have filed for damages from Tokyo Electric Power Company every month since April.

On Wednesday, representatives from 11 prefectures --the largest number ever, including first-time participants Miyagi, Yamagata, Niigata, Saitama and Shizuoka prefectures -- met Tokyo Electric President Toshio Nishizawa at the company's main office.

They demanded compensation for beef, tea leaves and other products that have been banned from shipment or whose prices have plunged due to radiation contamination.

The farmers' demands for payments since April have added up to 750 million dollars.

Tokyo Electric has said it would make payouts every 3 months, but farmers who are strapped for cash demanded the payments be made more regularly.

The head of the farmers' group in Miyagi, Akio Sugawara, said they want the utility to respond with sincerity to their request for monthly payouts, because they cannot wait for 3 or 4 months.

Tokyo Electric's managing director Naomi Hirose said monthly payouts are almost impossible, considering that the company has so many groups and individuals to compensate. But he said the company would study the farmers' request.

Wednesday, August 31, 2011 18:38 +0900 (JST)
www3.nhk.or.jp
by Edano 8/31/2011 5:06:22 PM

@es, thanks for the pointer to Report of Japanese Government to the IAEA, and nice find of the ***ulative cesium map!
by Ian 8/31/2011 5:07:33 PM

@RadioGuy they are talking about filling the containment vessels with water. Unit 1 they tried it and the water leaked out.. Unit 2 has a known hole down through the wet well that is leaking water. If they meant the reactor vessels, they admitted in the same article they have holes in them. WTH?
by lillymunster 8/31/2011 5:11:21 PM

@Ian , do you mean the NCIC presentation? The presenter said that he worked on the design of unit 4, so I assumed that the wide-angle view is taken from this unit's fueling floor. I noticed, though, that the yellow cap is stored on the opposite site of where it is now. I thought there was a sharing option for the video.
by Peter Melzer 8/31/2011 5:11:22 PM

@Ian @Peter Melzer what's the link ?
by Edano 8/31/2011 5:12:23 PM

@lillymunster They aren't even trying to maintain internal consistency in their PR. They admit they all melted through. Remember their release with the nice little melt illustrations? Where does that show rods by the end?
by RadioGuy 8/31/2011 5:13:38 PM

Ian, that CNIC presentation causes much confusion early on. CNIC mistakenly used a video of unit 6 ABWR with the central reactor well and called it unit 4. This was CNIC's mistake. We figured it out through the ongoing photos and TEPCO historical photos that showed unit 4 vs. unit 6 inside before the blasts.
by lillymunster 8/31/2011 5:14:50 PM

@Edano, right, Peter, what's the link to the video? This is the best I've seen in terms of actual analysis, not mere blind acceptance of Tepcoian doctrine.
by Ian 8/31/2011 5:15:46 PM

@RadioGuy Every time I read this news I about burst out laughing. I think they are forgetting what story they told before. Also, when they had the plan to flood unit 1's containment there were a couple of experts and I think one of the safety agencies that told them not to, that it would possibly rupture the containment concrete.
by lillymunster 8/31/2011 5:17:05 PM

a camera inside the vessels would be a good thing, though.
by Edano 8/31/2011 5:19:29 PM

@Edano That's the truth.
by RadioGuy 8/31/2011 5:19:54 PM

back
by dean 8/31/2011 5:33:24 PM

Found the link to the video
: www.ustream.tv
by Ian 8/31/2011 5:41:35 PM

leakspinner (now @ www.youtube.com
) points to this report:

34 spots top Chernobyl evacuation standard

Soil at 34 spots in six Fukushima Prefecture municipalities has been contaminated with levels of radioactive cesium higher than the standard used for forcible evacuations after the Chernobyl disaster, it has been learned. www.yomiuri.co.jp
by Ian 8/31/2011 5:51:40 PM