Japan Earthquake

Japan Earthquake | Page 2270

yes @ Peter I saw that on the terrorist threat area
by dean 8/29/2011 5:50:21 PM

@ lilly and all... that read on the old north anna fault line is a keeper..
by dean 8/29/2011 5:54:45 PM

The www.nei.org post-Irene survey of NPPs.
by RadioGuy 8/29/2011 5:54:57 PM

be back in a few...
by dean 8/29/2011 5:58:55 PM

High radiation levels on land near Fukushima plant

The education and science ministry has identified land near the damaged Fukushima Daiichi nuclear plant where radiation levels are higher than IAEA-designated emergency levels.

The ministry released a map on Monday showing the contaminated land. It conducted a survey for radioactive cesium at some 2,200 locations mainly in Fukushima Prefecture in June and July.

The map shows 29.46 million bequerels of cesium on one-square-meter land in a location in Okuma Town, several hundreds meters from the nuclear plant.

The figure exceeds the IAEA standard of 10 million bequerels per square meter under which people are required to temporarily evacuate.

Two other monitoring spots northwest of the nuclear plant were also found contaminated with radioactive cesium exceeding the IAEA level.

In the 1986 Chernobyl disaster, people in areas contaminated with 555,000 bequerels of cesium per one square meter were required to temporarily relocate.

The latest survey has identified contaminated land outside the government's no-entry zones in Fukushima Prefecture that is similar to Chernobyl.

Monday, August 29, 2011 21:43 +0900 (JST)
www3.nhk.or.jp
by Edano 8/29/2011 6:07:30 PM

interesting: in chernobyl they evacuated with 0.5 mio Bq/m², IAEA says 10 mio is okay. 20 times higher.
by Edano 8/29/2011 6:10:24 PM

within 25 years, the danger of radiation declined by factor 20.
by Edano 8/29/2011 6:12:29 PM

www3.nhk.or.jp

Map of radiation levels on farmland released

Japan's agriculture ministry has unveiled a map of radiation levels in agricultural areas. It shows levels of radioactive cesium are higher than the government-regulated standard in some areas.

The ministry drew up the map based on analysis of soil samples taken at 580 locations in 6 prefectures including Fukushima where the tsunami-damaged nuclear power plant is located.

The map released on Monday shows radioactive cesium exceeding the regulated level of 5,000 bequerels per kilogram in 9 locations. Vegetables and fruit are grownin the farmland.

The government has banned rice planting on farmland contaminated with radioactive cesium higher than 5,000 bequerels per kilogram, following the accident at the Fukushima Daiichi nuclear plant.

The map shows contamination of 8,571 bequerels on a field in Date City and 6,882 bequerels in Iwaki City, both in Fukushima Prefecture.

In areas where rice planting has been prohibited, including Namie Town and Iitate Village in Fukushima, the map shows radioactive cesium of over 20,000 bequerels per kilogram.

The agriculture ministry plans to increase monitoring around the highly contaminated farmland.

Monday, August 29, 2011 20:26 +0900 (JST)
www3.nhk.or.jp
by Edano via Www3.nhk.or.jp 8/29/2011 6:13:56 PM

i would like to see the 2 maps !
by Edano 8/29/2011 6:14:35 PM

i hope elaine finds them ;)
by Edano 8/29/2011 6:18:03 PM

@Edano elaine is just in what should I find?
by elainekirk 8/29/2011 6:38:25 PM

www.asahi.com
@Edano this is another copy stilll hunting originals
by elainekirk via Asahi 8/29/2011 7:05:40 PM

@Peter Melzer, true, and that's probably part of why there was a 'flare up' on March 21-23 that Tanabe points to. An interesting point is that there have been signs of re-criticality early on, but an expert on www.physicsforums.com notes that corium can't go critical and that, it seems he says, the fuel "can not go critical without the heterogeneous lattice that is a reactor core." So I presume if there were re-criticalities, they must have come from fuel that hadn't (yet) gone molten.
by Ian 8/29/2011 7:10:26 PM

www.nrc.gov
by Liz 8/29/2011 7:10:50 PM

www.nrc.gov
by Liz 8/29/2011 7:10:54 PM

@Liz Lilly will be glad of those ty
by elainekirk 8/29/2011 7:14:55 PM

Re my assertion of signs re-criticalities, there is at least this finding : "The data of the water samples from the unit-4 cooling pool and from areas near the unit-2 reactor, however, show an anomaly which may indicate, if the data are correct, that some of these fission products were produced by chain nuclear reactions reignited after the earthquake." arxiv.org
by Ian 8/29/2011 7:23:59 PM

thanks to Liz's post, at North Anna ".....initial reviews of the data determined that the seismic activity potentially exceeded the Design Basis Earthquake magnitude value above 5 Hz. " Why weren't the reactors automatically tripped by a seismic scram?
by Peter Melzer 8/29/2011 7:27:13 PM

@Peter Melzer why indeed
by elainekirk 8/29/2011 7:27:56 PM

@joniver posted an interesting eyewitness report on Lake Anna during the quake on organize.
by Peter Melzer 8/29/2011 7:28:54 PM

back for a bit
by lillymunster 8/29/2011 7:40:21 PM

Nice work Liz. :-)
by lillymunster 8/29/2011 7:45:48 PM

this needs checking by a translator but I am sure it tells tea growers to bury radioactive foilage and cover with soil ...as I say it needs translating translate.google.co.uk
by elainekirk 8/29/2011 7:52:28 PM

mainichi.jp
mainichi.jp
Very bad economics to let farmers keep harvesting fruits etc which are radioactive it damages the image and produce
from safe areas become mistrusted by default
by elainekirk 8/29/2011 8:09:27 PM

@Liz Thanks, that's a scary list of events. Did Calvert Cliff SCRAM??
by es 8/29/2011 8:16:11 PM

Hmm. N. Anna has unit 1 in cold shutdown and unit 2 in hot standby. They are not ramping back up. Both were hot standby right after the quake. Unit 1 is now in cold shutdown. Why is 2 not also in cold shutdown right now? They said they are going to start that process soon. This looks strange to me. When we were talking about their cooling systems and the lake right after the quake there were things that sounded like they may not have enough water capacity for both reactors. Unit 3 they want to add will have a cooling tower rather than river/lake cooling. That leads one to believe they don't have cooling capacity for another reactor using the lake. Now this delayed shutdown on 2? If they can't quickly cool down both units what would happen if the accident was more severe and needed to cool both asap.?
by lillymunster 8/29/2011 8:18:47 PM

Experts split on how to decommission Fukushima nuclear plant
mdn.mainichi.jp
by elainekirk 8/29/2011 8:19:43 PM

@lillymunster the question was raised in an nrc doc I looked at , the applicants were trying to sell the idea that the rise in lake temperature would be good too
by elainekirk 8/29/2011 8:22:15 PM

@lillymunster , the lake would begin to bubble and steam, ;)
by Peter Melzer 8/29/2011 8:24:05 PM

www.reactors.de
by Liz 8/29/2011 8:24:28 PM

@lillymunster The Noth Anna NRC Unusual Event declaration from the 25th also mentioned Unit 1 to be in Cold Shutdown but Unit 2 in 'Hot Standby'. "The current status of North Anna, Unit 1 is Mode 5. Unit 2 is in Mode 3 in preparation for cool down.":

www.nrc.gov
by es 8/29/2011 8:26:36 PM

Elaine, do you remember what the NRC's concern was, just that the 3rd reactor would heat up the lake too much or did they cite something else?
by lillymunster 8/29/2011 8:33:52 PM

Sorry, that was the wrong Link! Wanted to post this one nuke-me.com
by Liz 8/29/2011 8:35:54 PM

www.asahi.com @Edano
by elainekirk via Asahi 8/29/2011 8:37:05 PM

@lillymunster I will look for the doc again it was an equiry type event transcript give me a mo @Edano wanted these maps
by elainekirk 8/29/2011 8:38:06 PM

@Edano
this English version was with it I am trying to track back to gov source for more info
by elainekirk via Img.47news.jp 8/29/2011 8:38:34 PM

Just heard on the radio that the NRC says the 5.8 quake exceeded the "earth motion" capacity of Anna NPP. Exactly what that means they didn't say, and that's about all they said. It must be out on google news.
by Ian 8/29/2011 8:50:28 PM

"WASHINGTON—The North Anna nuclear power plant in Virginia may have experienced more ground motion during last week's earthquake than it was designed to handle, U.S. nuclear officials said Monday." online.wsj.com
by Ian 8/29/2011 8:51:35 PM

infosecurity.jp
translate.googleusercontent.com
by elainekirk via Infosecurity.jp 8/29/2011 8:57:25 PM

Experts say Fukushima residents should have taken iodine ajw.asahi.com
by lillymunster 8/29/2011 9:11:59 PM

@lillymunster did you do a news roundup? has it been tweeted?
by elainekirk 8/29/2011 9:12:39 PM

@lillymunster, and yet Japan's National Institute of Radiological Sciences pleaded with citizens, especially those with children, to not take iodine : www.nirs.go.jp
by Ian 8/29/2011 9:16:17 PM

@elainekirk I did individual stories today instead of one roundup.
by lillymunster 8/29/2011 9:24:49 PM

High levels of cesium found in soil around 20km zone. Some are 10x the evacuation rate used at Chernobyl. ex-skf.blogspot.com
by lillymunster 8/29/2011 9:25:41 PM