Japan Earthquake | Page 1963
That is the hottest one I foundby lillymunster 7/19/2011 2:37:44 AM
back.. greetings to allby dean 7/19/2011 2:40:39 AM
Hi Dean.by Ralph Unger 7/19/2011 2:40:52 AM- hey Ralph good seeing youby dean 7/19/2011 2:42:20 AM
- We are trying to figure out why they want to cover #3 turbine building when the reactor building has no roof at all.by Ralph Unger 7/19/2011 2:42:24 AM
@Cat , first time I noticed the skid marks on the turbine building roof. Large chunks slid across the roof and fell down the other side.by Peter Melzer 7/19/2011 2:42:57 AM- Best guess so far is a suspicion that there may be fuel rods or something in there from the explosion.So they don't want more water in there. Kinda unlikely though.by Ralph Unger 7/19/2011 2:45:17 AM
- interesting question Ralph...by dean 7/19/2011 2:45:23 AM
Hi dean! @all I thought that water flowing into the open reactor building would have the same effect on tunnel water levels even through the turbine building.. so it would seem curious to rush and cover turbine bldg 3 if water levels were the only concern.by LM 7/19/2011 2:46:47 AM- if it were fuel rods the rad reading history around the building,, if they have them,, would be higher.... and... not sure water would do anything to the fuel rods because I can't believe that much rain would fall in the hole that couldn't be overcome with floor drains...by dean 7/19/2011 2:47:33 AM
@Peter Melzer. I can believe that some stuff skidded across the roof but some of those falling pieces are coming down really fast from very high. Unless the roof was reinforced steel I think they would have gone through if they hit. Look at the shapes of the biggest falling pieces, they look pretty solidby Cat 7/19/2011 2:47:39 AM- Hi Dean, Smoss found an odd TEPCO document about changing control rods at #3 in January after the last refueling. Sounded very strange.by lillymunster 7/19/2011 2:47:59 AM
- @ all.. have we come to a determination where the yellow cap is?by dean 7/19/2011 2:48:21 AM
- @dean Four workers got high doses being on the roof today 11mshv range. Tweets from the workers that they can only be in the turbine building 15 min at a time.by lillymunster 7/19/2011 2:49:07 AM
- lilly.. there could be some normal reasons for changing the control rods... maybe they were at the end of their particular lifetime.. or... maybe they wanted to load the control rod poison sections differently for MOX fuel..by dean 7/19/2011 2:49:58 AM
- @Cat if there were pieces of panels from the side of the building they would have a horizontal trajectory rather then a vertical one.by Ralph Unger 7/19/2011 2:50:08 AM
- if that's the case lilly .. It's got to be something extremely hot inside... fuel seems possible in that caseby dean 7/19/2011 2:50:41 AM
- @dean it seemed odd it was after the restart with MOX in. Not sure if they attempted to do this running or stopped everything. No outage report for that time period so far.by lillymunster 7/19/2011 2:51:00 AM
- My guess is a miscalculation for the MOX control rod requirements and so a change was needed.by Ralph Unger 7/19/2011 2:51:56 AM
- lilly, perhaps they were doing rod worth measurements and determined those rods needed to be changed out to meet neutronics in the core... they do those at low powerby dean 7/19/2011 2:52:07 AM
- @dean As far as the yellow cap so far we have not found a piece of it, all yellow objects ended up being other things that we know of. I would need to check the turbine roof hole against the yellow cap size. Off to grab the cap dimensionsby lillymunster 7/19/2011 2:52:07 AM
- @dean I assumed replacing a control rod during operation would be dangerous?by lillymunster 7/19/2011 2:52:48 AM
- MOX is volatile stuff compared to reg fuel.by Ralph Unger 7/19/2011 2:52:52 AM
- they can't replace a rod at power...by dean 7/19/2011 2:53:18 AM
- I'd have to read that document that reported it to be certainby dean 7/19/2011 2:53:51 AM
- @Ralph Unger. Yes I agree, so what were the very large objects that went straight up and came down so fast?by Cat 7/19/2011 2:54:13 AM
Containment cap 10m across and about 5 high
by lillymunster 7/19/2011 2:54:49 AM- But it seems that they did, or at least not in a shutdown configuration. @ Dean check this out, it's about MOX fuel. I posted it the other night, just read the first paper in the presentation. www-nds.iaea.orgby Ralph Unger 7/19/2011 2:55:08 AM
- @Dean, the containment cap is about the right size to fit through that hole. :-)by lillymunster 7/19/2011 2:55:22 AM
- @Cat , seems like pieces came flying from two directions: horizontally, leaving skid marks, and from above, puncturing the roof.by Peter Melzer 7/19/2011 2:55:30 AM
- lol lilly .. you know we talked about that and I kept straining my eyes to see yellow inside that buildingby dean 7/19/2011 2:56:10 AM
- @dean I tried everything on all the images to pull anything out of the images of those holes and nothing, too dark down in.by lillymunster 7/19/2011 2:56:58 AM
- how many think the yellow cap was blown to smitherines.... 1 - yes... 2 - no 3 - hmmmmmby dean 7/19/2011 2:58:17 AM
- looking at it Ralphby dean 7/19/2011 2:58:46 AM
@Peter Melzer When you look at the R3 explosion video, you can see both of those components to the explosion.by RadioGuy 7/19/2011 2:59:14 AM
Image in the pic is a contamination map of the sea at an aquarium center twitpic.com
by lillymunster via Twitpic 7/19/2011 3:01:55 AM- @ Ralph.. what were you looking that was pointed out there? dang report is scrambled on my endby dean 7/19/2011 3:02:48 AM
- @dean, if it is still on, it must have cracked big time because the nitrogen they injected into the primary containment did not want to stay for a jiffy.by Peter Melzer 7/19/2011 3:03:37 AM
- @dean 2=no. I wouldn't be totally surprised if it was blown off intact since the concrete lip it bolted into was insufficient.by lillymunster 7/19/2011 3:03:49 AM
- It's about spent fuel storage, all the fuel data seems to be classified. translate.googleusercontent.com From the document I linked a sec ago "These high burn-up U 02 and MOX
spent fuel have much higher n e u t r on emission and h e at generation t h an t h at of
conventional burn-up UO2 fuel (table 1). It is therefore necessary to obtain basic data in
order to verify computations prior to their use in the design and safety analyses for spent
fuel s tor age. Such data include the n e u t r on and gamma-radiation source, actinide and
fission product isotopic composition, elements distribution in a pellet and so o n [ l , 2 ]. "by Ralph Unger 7/19/2011 3:04:26 AM 
@all Reposting original dated 1-19-11 changes in control rod configuration www.pref.fukushima.jp and translation docs.google.comby smoss 7/19/2011 3:07:16 AM- very true Ralph.. and,,, I think they had to learn how.. analytical results translated into real world data after the irradiation of the MOX fuelby dean 7/19/2011 3:07:38 AM
- GIGO, garbage in, garbage out, they have no idea what they are burning with the MOX I would think.by Ralph Unger 7/19/2011 3:09:27 AM
by Cat via I52.tinypic 7/19/2011 3:09:33 AM- @dean What number is "blown out so forcefully it popped loose at one edge then was pushed aside into a crumpled roll as the bolts blew and thrown who knows where?"by RadioGuy 7/19/2011 3:09:37 AM
Japan Earthquake | Page 1963
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