Japan Earthquake

Japan Earthquake | Page 2948

@lilly.. I wonder if they put the steam generators through a flow test at the manufacturers.. I doubt it ... and this is one area where things can come up because of vibration induced stresses on the tubes and tube sheet of the SG's
by dean 2/5/2012 3:15:13 PM

they perform hydrotesting probably which is good , they usually do it at 120% of the design rated pressure
by dean 2/5/2012 3:16:00 PM

will return in a hour or so
by dean 2/5/2012 3:16:53 PM

I was reading through some info on the steel type and a mention of the welds. I need to reread it and see if it makes more sense after 8 hours of sleep :-)

pbadupws.nrc.gov
by lillymunster 2/5/2012 3:19:23 PM

'Uranium supply crunch is expected to begin next year' thewatchers.adorraeli.com I have a horrible feeling this will encourage reprocessing & more dangerous reactors..
by UKVal 2/5/2012 3:22:38 PM

The NRC letter mentions the SanOnofre steam generators had the stainless steel cladding removed on the ends of the tubes before they were welded into the end plate. The unit at Ft. Calhoun had the stainless steel left on before welding. They think this removal of the stainless steel caused unit 3 at San Onofre to have failures in the steam generator tubes. News stories talked about "scribing" in the welding process as cause for the failures at San Onofre. I do not know if they mean this end treatment or something else? Either way they knew unit 3 had this failure but continued to run unit 2 knowing it had a defective steam generator!
by lillymunster 2/5/2012 3:24:14 PM

@UKVal even with a major drop off in demand they are still going to hit shortages? This explains why the stock market websites have been so obsessed with uranium.
by lillymunster 2/5/2012 3:26:03 PM

@lillymunster ..and why the Russians have been so keen to do deals with suppliers...
by UKVal 2/5/2012 3:44:59 PM

@UKVal what have the Russians done? Get long term supply & price locked in?
by lillymunster 2/5/2012 3:48:40 PM

@lillymunster I believe so
by UKVal 2/5/2012 3:54:13 PM

Funny nuclear cheerleaders never mention the fuel shortage? :-)
by lillymunster 2/5/2012 3:55:37 PM

@lillymunster that's because they believe they can replace some of the fresh supplies with recycled fuel
by UKVal 2/5/2012 3:59:00 PM

haha maybe they should double check their tweets
by elainekirk 2/5/2012 3:59:42 PM

been out of touch for a day or so so not sure if this has been posted.. "Tepco admitted they can not stop water leakage from reactor4," fukushima-diary.com
by UKVal 2/5/2012 4:00:22 PM

@UKVal I think that is a new update. I am still struggling to fully understand what is leaking between language oddities of worker tweets and vague technical info out of many of the bloggers. There were reports that the skimmer is still leaking. A pipe downstairs and who knows what else. Happy cited freezing pipes is a problem and he was clear about that. Exactly what systems are involved is a bit fuzzy.
by lillymunster 2/5/2012 4:05:35 PM

@lillymunster yes I've struggled with exactly what is leaking too... saw that tweet from Happy which suggested original diagnosis could not explain the rapid loss of water...
by UKVal 2/5/2012 4:06:51 PM

This says "plumbing" related to the skimmer tank but they still don't know what pipe or connection is leaking. news.goo.ne.jp
by lillymunster 2/5/2012 4:07:32 PM

Interesting article from 2003 saying the UK govt will move to renewables and away from nuclear www.guardian.co.uk
by lillymunster 2/5/2012 4:12:53 PM

"The worker who tweets from Fukushima I Nuke Plant is more worried about Reactor 2 than Reactor 4." ex-skf.blogspot.com presumably because if the rising temp
by UKVal 2/5/2012 4:15:10 PM

if =of sorry - can't type
by UKVal 2/5/2012 4:15:31 PM

so 2 is increasing temp even with increased water. So not good.
by lillymunster 2/5/2012 4:22:31 PM

@lillymunster re 2003 Guardian article - yes it was the plan to move to renewables then the Government lost faith & the nuclear lobby began a massive campaign to persuade them that only nuclear would meet the UK's energy needs. This, plus change in government has led to a resurgence of pro-nuke ideas
by UKVal 2/5/2012 4:25:32 PM

There are now a number of temp sensors up at unit 2. We need to make sure Edano sees this www.houseoffoust.com
by lillymunster 2/5/2012 4:29:09 PM

Torus radiation is up at unit2
by lillymunster 2/5/2012 4:30:53 PM

re UK energy policy .. e.g. 101 Tory MPs are demanding drastic cuts to the £400m-a-year government subsidies for wind farms.' 'http://www.guardian.co.uk/politics/2012/feb/04/chris-huhne-green-agenda-menzies-campbell
by UKVal 2/5/2012 4:30:54 PM

@UKVal do the Tories generally support nuclear?
by lillymunster 2/5/2012 4:31:22 PM

@lillymunster #2 looks bad...
by UKVal 2/5/2012 4:31:34 PM

@lillymunster most, but not all. They tend to have closer ties with big business than Labour
by UKVal 2/5/2012 4:32:08 PM

unit 2 rpv bottom was 68.6 at 11a.m. www.tepco.co.jp so still rising
by elainekirk 2/5/2012 4:35:38 PM

@UKVal we are seeing policy change based on who is prez and what party is in control here. Really makes having a consistent policy or honest decisions hard.
by lillymunster 2/5/2012 4:39:40 PM

TEPCO claims the drywell rad sensor is failed. Not sure if it really is or more BS from TEPCO
by lillymunster 2/5/2012 4:40:39 PM

Containment pressure according to Elaine's new TEPCO document is higher at 2 than other units. 110 kPaabs vs. 107 and 101

Also another sick worker
A worker of a partner company which operated the water desalinations said he was in bad shape. He was examined and treated at the emergency medical clinic of Unit 5&6 and judged that he required an emergency transfer. Then he was transferred to Iwaki Kyouritsu Hospital via the J Village (after the examination by the doctors, the worker went home). The patient does not have any radiation materials attached to the body
by lillymunster 2/5/2012 4:43:11 PM

good afternoon. which of my plots i have to see ? ;)
by Edano 2/5/2012 4:45:34 PM

#2 torus b radiation sensor (blue) was marked as failure from the first day on.
by Edano 2/5/2012 4:48:05 PM

@Edano unit 2 temp, pressure, rads. It seems to have a steady increase despite increased watering
by lillymunster 2/5/2012 4:48:19 PM

ref the pressure we never know if tepco pushes something in (like nitrogen).
by Edano 2/5/2012 4:52:07 PM

according to the table here: ex-skf.blogspot.com Temp at bottom has gone up by 18.2 degrees since 30th Jan
by UKVal 2/5/2012 4:55:30 PM

Fire at Moscow nuclear institute

* Environmental group worried by fire at research centre
* Nuclear agency says no threat of radiation leak

af.reuters.com
by VesaVA 2/5/2012 4:58:07 PM

@Edano they have been doing nitrogen pushes off and on. I don't know if they mention each one or only when they feel it is significant. It seemed for a while hydrogen would build up. They would release it, inject nitrogen periodically. The last time anyone saw the weird flame by #2 was last week.
by lillymunster 2/5/2012 4:58:39 PM

And still rising "Since 11:00AM of 2/5/2012, the temperature of the container vessel has increased even more.
2/5/2012 11:00AM : 68.6℃ 4:00PM : 71.7℃ (+3.1℃)

'Tepco is going to increase the amount of water to inject.
When it becomes over 80.0℃, they are supposed to warn the local governments.' fukushima-diary.com
by UKVal 2/5/2012 4:58:59 PM

www.houseoffoust.com probably ex-skf means rpv bottom head temperature (yellow). it has been rising since end of january. other sensor show strongly declining temps. the temp in #2 have no clear tendency whatever that may be caused by. who knows.

by Edano via Houseoffoust 2/5/2012 5:00:20 PM

Fukushima Diary cites warning local officials if it hits 80 degrees but the news he cites don't mention it so I don't know where he got that but it sounds plausable.
by lillymunster 2/5/2012 5:02:08 PM

CRD top housing,RPV bottom head,RPV drain pipe, DW duct, and feedwater nozzle all seem to be up a bit in the last 2 days.

The others that are steadily down makes me wonder if side of the reactor where each sensor is may play a role
by lillymunster 2/5/2012 5:04:50 PM

ooops, i didn't notice that today's plots are not online yet. uploading them right now. :) i was wondering why i did not find some numbers in the graphs. :)
btw: raw data here: www.tepco.co.jp

by Edano 2/5/2012 5:06:56 PM