Japan Earthquake

Japan Earthquake | Page 2579

@ elaine.. I can't remember for certain, what is the floor level of the control room with respect to the reactor containment/core
by dean 10/30/2011 7:12:10 PM

sounds like cover is polyester so it would probably bulge out
by dean 10/30/2011 7:14:52 PM

@dean on the upper floor (2nd) of the "bridge" building between reactor and turbine building.
by Edano 10/30/2011 7:17:00 PM

could be a leaking pipe.
by Edano 10/30/2011 7:17:53 PM

that is certainly a possibility
by dean 10/30/2011 7:19:24 PM

the pressure in #1, they certainly have to level it out with the new cover.
by Edano 10/30/2011 7:21:06 PM

@Edano.. pressure control will be difficult especially if it's beyond their control with normal measures.. venting etc
by dean 10/30/2011 7:26:11 PM

I was thinking.. the control room is vulnerable to penetrations for air handling systems, conduit penetrations, piping, or direct levels of radiation.. althought I would expect the concrete walls to be shield walls which usually use high density concrete with lead at times
by dean 10/30/2011 7:28:40 PM

The tent would not be able to cause a pressure increase, the side where the "garage" doors is has two huge roll up fabric flaps that are very loose and are open any time they are working inside. I guess it is intended to keep the spewing rads from going outside it also has a big filter box on top so air can go up and out.

The control room is above the torus but there is a floor level in between. The portion of the torus underground that is outside the reactor building box is under the bridge building
by lillymunster 10/30/2011 7:31:50 PM

@ lilly.. it seems unlikely for the corium to travel there, but may have had some interfacing impacts with causing higher radiation and activity.
by dean 10/30/2011 7:34:07 PM

time to play with grandson.. he's ready ... I bought they lazer tag guns and it's all fun now.. be back later
by dean 10/30/2011 7:34:32 PM

@dean enjoy
by elainekirk 10/30/2011 7:41:53 PM

@dean I don't think corium could have a direct effect but what about a crack in the building walls or penetrations allowing steam to come up and in?
by lillymunster 10/30/2011 7:45:17 PM

Uploaded all the diagrams from yesterday into the library in the diagrams sections. Let me know if you find a diagram that needs a better name description than I gave them. Will get photos of the condensate tanks etc. added later. Going to try to compile the notes from yesterday at some point tomorrow when I have fewer interruptions.

houseoffoust.com
by lillymunster 10/30/2011 7:52:00 PM

@lillymunster oh this is looking very comprehensive you are marvelous
by elainekirk 10/30/2011 8:01:15 PM

@elainekirk thanks. trying to figure out ways to gather things and make them easy to find when we need them again.
by lillymunster 10/30/2011 8:25:20 PM

@lillymunster you are doing an awesome job of it
by elainekirk 10/30/2011 8:26:37 PM

@lillymunster Condensate storage tank with valves diagram links to 404
by Edano 10/30/2011 9:02:52 PM

by Edano edited by lillymunster 10/30/2011 9:05:52 PM

@Edano I love that animation
by elainekirk 10/30/2011 9:08:54 PM

@lilly: you have the "Chart of radiation releases by reactor and isotopes" in japanese, but i found it in english as well. www.kantei.go.jp page 7
by Edano 10/30/2011 9:10:53 PM

@elainekirk so you made it work :)
by Edano 10/30/2011 9:12:32 PM

@Edano thanks - typo in the link when I put it in. Fixed now. Will add the animation
by lillymunster 10/30/2011 9:12:52 PM

@lillymunster thank YOU
by Edano 10/30/2011 9:13:25 PM

@lillymunster This tepco link gives a very good interactive map of piping and trenches, etc. of the units. Toolbar for zoom appears under prompt on lower right. Btw, looking at it makes me wonder if therise in rad in control room is related to the seawater intake pipes? Iirc, they've been working to clear the screens of debris and the pipes of silt/sand. And, iirc, reports have said that the contaminated seawater hasn't dispersed the way they thought it would...anyway, link: www.tepco.co.jp
by M.I.A. 10/30/2011 9:13:41 PM

Oh, BTW, this website allows people to create basic animations online & post them. It is what that BWR animation is put into. www.picasion.com
by lillymunster 10/30/2011 9:15:14 PM

@lillymunster if you can't make it "by hand" ;) nice site, bookmarked.
by Edano 10/30/2011 9:16:28 PM

@M.I.A. thanks, will grab those for reference.
by lillymunster 10/30/2011 9:18:22 PM

i have been searching for the cesium ocean release report from oct 26 by irsn www.irsn.fr in english, but in vain.
by Edano 10/30/2011 9:20:41 PM

The estimate of much higher levels of radioactive cesium-137 comes from a worldwide network of sensors. Study author Andreas Stohl of the Norwegian Institute for Air Research says the Japanese government estimate came only from data in Japan, and that would have missed emissions blown out to sea. enformable.com
by Majj 10/30/2011 9:24:16 PM

@Edano i will look
by elainekirk 10/30/2011 9:25:40 PM

it is strange that they do not publish it in english ...
by Edano 10/30/2011 9:29:43 PM

tepco's for the 26th
www.tepco.co.jp
docs.google.com
by elainekirk 10/30/2011 9:30:50 PM

out for a bit - will check in after I get back
by lillymunster 10/30/2011 9:31:53 PM

@Edano sirocco.omp.obs-mip.fr
by elainekirk 10/30/2011 9:35:32 PM

@Edano is that it??? have I found it? can I run around cheering?
by elainekirk 10/30/2011 9:36:00 PM

@elainekirk no :( this one (open it) www.irsn.fr Impact_accident_Fukushima_sur_milieu_marin sit down again :)
by Edano 10/30/2011 9:37:07 PM

@Edano that one says its modelling is from sirocco so I was hoping :(
by elainekirk 10/30/2011 9:41:55 PM

@elainekirk it is interesting as well, but not it.
by Edano 10/30/2011 9:43:43 PM

this isnt it either
www.atmos-chem-phys-discuss.net
by elainekirk 10/30/2011 9:53:19 PM

no.
by Edano 10/30/2011 9:57:13 PM

@Edano I am stumped
by elainekirk 10/30/2011 10:04:31 PM

@Edano it may come out this week in english we can hope, they have published previously in english re fuku. Your doc is too big for the translate but there is this translate.google.co.uk

Nuclear accident at Fukushima Daiichi-: IRSN publishes an update of his paper on the impact on the marine environment from radioactive releases resulting from the accident
27/10/2011
Print Archive Send
A strong radioactive contamination of the marine environment occurred after the accident in the Fukushima Daiichi Nuclear Power Plant March 11, 2011. She had the main source direct discharge of contaminated water from the plant, which lasted until about 'April 8, and to a lesser extent, the impact in the ocean part of radionuclides discharged into the atmosphere between 12 and 22 March.
In the immediate vicinity of the plant, the concentrations in seawater reached the end of March and early April to tens of thousands of becquerels per liter (Bq / L) for cesium-134 and 137 and exceeded 100,000 Bq / L for iodine-131. Iodine 131 has declined rapidly due to its short half-life (8 days) and the measurement results came under the detection limit in late May. The concentrations of cesium-137 and 134 began to decline in this area from April 11 and since mid-July, rose below the detection limits (5 Bq / L) of the measurement techniques used for monitoring.
In interpreting the results of measurement of cesium-137 in seawater, IRSN has updated its estimate of the total amount of cesium-137 released directly into the sea from 21 March until mid-July. The resulting value is 27.1015 Bq, the majority (82%) was rejected by 8 April. The radioactive release at sea is the largest one-time contribution of artificial radionuclides to the marine environment ever seen.
However, the location of the site of Fukushima has an exceptional dispersion of radionuclides, with one of the most important currents of the world that has contaminated water away to sea in the Pacific Ocean. Thus, the measurement results obtained in the seawater and coastal sediments suggests that the consequences of the accident, in terms of radiation protection, become weak for pelagic species from autumn 2011 (in low concentrations sea water and sediment storage is limited).
However, significant pollution of sea water on the coast near the central hilly may persist over time because of continuous intake of radioactive substances transported to the sea by runoff of surface waters of contaminated soils. Also, some coastal areas, not yet identified, could show the conditions of dilution or sedimentation less favorable than those observed so far. Finally, the possible presence of other radionuclides persistent, such as strontium 90 and plutonium has not been sufficiently characterized by measurements.
The measurement results show the persistence of recent contamination of marine species (mainly fish) caught off the coast of Fukushima Prefecture. Benthic organisms and filter feeders and fish at the top of the food chain are, over time, the most sensitive to pollution cesium. It is therefore justified to continue monitoring of marine species harvested in coastal waters of Fukushima.
Download the briefing note of the IRSN October 26, 2011, " Synthesis of updated knowledge on the impact on the marine environment from radioactive releases from nuclear accident site of Fukushima Daiichi "(pdf)
by elainekirk 10/30/2011 10:35:31 PM