Japan Earthquake

Japan Earthquake | Page 111

back for awhile.. after traveling for work today ...
by dean 3/27/2011 9:39:09 PM

This may be helpful as well. "Unlike the cooling systems for the reactor core, the pumps for these pools typically don’t have backup power, so once electricity from the power grid was cut off, the pumps stopped operating.
Once that happened, the heat from the fuel rods began raising the temperature of the water in the pools. Once the water in a pool reached the boiling point, it would begin to boil away and lower the level of the water." allthingsnuclear.org
by Tenzing 3/27/2011 9:40:00 PM

@jojo, your putting words in my mouth or extending on what I said. I am not saying they are not withholding data. They likely are. Someone other than greenpeace is pulling readings for that area. They are not sharing them with the group that runs the site with the readings. My point was that it is possible some of the existing stations were wiped out by the tsunami. So a little of both.
by Nancy 3/27/2011 9:40:06 PM

Hi Dean - couple stories that should interest you pinned at the top
by George Gibb 3/27/2011 9:40:22 PM

@Tenzing: from the reports we get, they only recovered light in control rooms; which imho means that the only parameters they get are from mechanichal equipments (ie mesuring without the need of electricity)
by Jo Lindien 3/27/2011 9:40:27 PM

The allthingsnuclear link above points to a Union of Concerned Scientists posting mentioning that the seals around the doors of the SFPs are air-filled seals, which stop being inflated when the power goes out, and then slowly lose pressure.
by radioguy 3/27/2011 9:42:00 PM

@dean Also the youtube video from yesterday - very clean
by George Gibb 3/27/2011 9:42:20 PM

"The owner of the stricken nuclear power complex in northeastern Japan said Saturday that it will hike the radiation exposure limit for its workers at the plant from 100 millisieverts per shift to 150 millisieverts, Japan's public broadcaster NHK reported." It is now 250 mSv per shift. articles.cnn.com
by Ralph Unger 3/27/2011 9:42:25 PM

@Ralph Unger So what part of a lifetime does is that per shift?
by radioguy 3/27/2011 9:43:35 PM

@radioguy Dean brought that up a few days ago. Go Dean!
by marie rich 3/27/2011 9:43:35 PM

@Dean..what;s your take on water in turbine of R#2 beign 10 mill. times more radioactive and then tepco redacting the story. Smell smtg fishy? Even now they say that water is 10000 times more radioactive.
by Optim 3/27/2011 9:43:36 PM

@Ralph Unger: It's now a cumulative 250 mSv per YEAR afaik.
by sims 3/27/2011 9:43:43 PM

The current situation www3.nyahk.or.jp
by Treiagonaut edited by George Gibb 3/27/2011 9:44:18 PM

I hope so. Otherwise, it is going to be day laborers. Everybody gets s suit, a bucket and a mop and is told to go in and mop for ten minutes. They will never show up on company records. That is how things were done to clean up hazmat areas in West Germany three decades ago. Let us hope this will be different.
by Peter Melzer 3/27/2011 9:44:31 PM

@sims Yes, but as Pedro pointed out, that's half the limit for most of world, inl USA
by marie rich 3/27/2011 9:44:55 PM

@Ralph: No, the reports can both be right.. it just means they're only allowed to do 1 150 mSv shift per year and the rest of the work has to be lower-radiation.
by sims 3/27/2011 9:45:28 PM

good articles and video above... when I look at the plant 2 hold in the wall...I sure think that was the saving grace from blowing that building apart..
by dean 3/27/2011 9:46:18 PM

@NHK Listener : well, radiation effects are not LNT. but this does not mean it is not dangerous. it simply means, some small amounts of radiation can cause the same cancer as a high amount. you cannot foresee it. some of the liquidators and Nagasaki victims are still alive despite their heavy burns. but others that might just have eaten asingle hot cherry, have died of radiation.
by Matsuoko 3/27/2011 9:46:44 PM

@Ralph Unger It wouldn't be the first time CNN has mistaken information or misquoted Japanese officials by it depends on what it is meant by shift. It could mean early shift.
by Pedro Jesus 3/27/2011 9:46:51 PM

re: radiation exposure. So there are places no one can go at all because they would immediately be exposed to over the 250 limit?
by ariadne 3/27/2011 9:47:03 PM

you know at this point.. I am amazed at the retraction of the rad levels.. I was flabergasted
by dean 3/27/2011 9:47:05 PM

@dean ya that 10 mil report last night was scary
by George Gibb 3/27/2011 9:47:59 PM

@dean Yes. 10,000,000to 100,000 is a bit of a change.
by radioguy 3/27/2011 9:48:07 PM

Is anybody using the RSS feed for this forum? I can't seem to get it to update...
by Audrey 3/27/2011 9:48:08 PM

on the way here I was listening to CNN and they were saying they retracted the 10 million to 100,000.. .
by dean 3/27/2011 9:48:19 PM

sounds like a rad technician miss-read his scale on the meter.. the ones where I work have to be switched to another level
by dean 3/27/2011 9:48:59 PM

@George Maria Rich is saying on FB that this site is not archived. That's not true, right?
by Jim Carver 3/27/2011 9:48:59 PM

@dean That is correct. I've seen such corrections in other news agencies.
by Pedro Jesus 3/27/2011 9:49:04 PM

OK I'm going to leave for a while and doom myself to reading 100 pages of scroll later. ;)
by radioguy 3/27/2011 9:49:27 PM

yes.. george.. that's about the time it takes for false information to trickle up to the top and trickle back down then back up and a retraction posted
by dean 3/27/2011 9:49:37 PM

mechanical instuments would be questioned as to there reliablity due to all the conditions they have been exposed to... many operate on very small orfices and totorances that have probably been effected by every thing. i would say they only give a "best quess"
by fitter 3/27/2011 9:49:37 PM

The presence of highly-radioactive water is a serious concern in that it both can and will run off and must be presumed to be doing exactly that, but also because it precludes entry into the places where people have to go in order to get a cooling solution operating and stabilize the situation.

With that said however the early reports of a huge breach ("large vertical crack") in the containment are unlikely to be true. Among other things its damn hard to get a positive pressure reading in a container that has a big crack in it - and the pressure readings are positive and material. You're free to believe that TEPCO has been falsifying those numbers since the beginning, but that's the only explanation that jives with a violated containment, and more-importantly if there was a violated containment all of the water put in would have instantly flash-boiled into steam. We haven't seen anything from these plants that jives with that explanation. market-ticker.org
by NHK Listener 3/27/2011 9:49:55 PM

@Dean If people cannot go into turbine chambers..how can they transport fresh water ? Workers went there to fix power cables right? Without power how can they do thsi transport? Bcos of high radiation levels workers cannot enter the turbine rooms
by Optim 3/27/2011 9:50:07 PM