Japan Earthquake

Japan Earthquake | Page 2006

@Majj: :)
by Puc 7/24/2011 12:42:59 AM

that's an aggressive schedule to say they will replace the RPV and hook up all the piping, do startup testing and every thing in 2 MONTHS... whewwwww
by dean 7/24/2011 12:48:12 AM

@dean, we had a link yesterday to a post written by someone from the industry who mused that an rpv replacement may be feasible, but very expensive, and in the end the utility was left with the old accessories, as you say. He thought for that kind of investment you might as well build a new plant. At least then you have got the latest model. But I would not be surprised, if tepco still was not keeping this idea of lifting the rpv out in mind for one day way in the future, because then the buildings could probably be rased.
by Peter Melzer 7/24/2011 12:48:18 AM

the D&D of plants has used that techinque for raising the vessel out and transporting it to a burial ground.. then the whole building is torndown @ Peter but I agree.. a horrendously expensive venture and you end up with GEN 3 technology.. even EARLIER than GEN 3...
by dean 7/24/2011 12:50:38 AM

I found something that is not quite rpv-related, but deals with aging of containment components in BWR: www-pub.iaea.org
by Peter Melzer 7/24/2011 12:50:40 AM

@Peter Melzer Chubu electric decided that earthquake retrofits to their 2 fuku style reactors were a waste of money since for a bit more money they could have a totally new reactor with more generating capacity than the old 2 units. I would think this RPV replacement could easily hit this same formula. Doing 2 RPV replacements on old units could cost the same or more as just building one new higher MW unit.
by lillymunster 7/24/2011 12:50:48 AM

I believe the GEN IV lower power modular reactors are the way to go...
by dean 7/24/2011 12:50:58 AM

tepco says in the study they want to increase the life span of the nuke. the document does not say it, but it is obviously Fuku Daiiichi #1 that they describe.
by Edano 7/24/2011 12:53:35 AM

i suspect the rpv is known to be damaged since 1999 at least.
by Edano 7/24/2011 12:55:02 AM

interesting article peter
by dean 7/24/2011 12:55:11 AM

that vent pipe is a mighty odd shape from #3 just before the junction would that trap gas? and the crane or whatever it is was there before the explosion because it has rubble on was it working on the joint because a piece of the collar is missing
by elainekirk 7/24/2011 12:56:00 AM

@Dean Hi....and bye! @ All I gota go for a while, might be back later??? I had a question does anyone know if Japan uses recycled water? Cos if they do then.....fuku! I will leave with this....I am still calling BS! Like I am to believe that this thing is to only hold fabric???? Please..... look at the engineering on that, it's built better than the reactors themselves!!! @All stay well!:-)
www.japannewstoday.com
by Thunder via Japannewstoday 7/24/2011 12:57:13 AM

@dean , reading chapter 7 is like a ghost ride in an amusement park, ;)
by Peter Melzer 7/24/2011 12:57:17 AM

@Thunder that framing looks almost like bridge trussing.

@Peter reading it right now. Page 57 on is worth the read!
by lillymunster 7/24/2011 12:58:40 AM

perspective - when these plants were designed way way back.. most of them assumed a 20 year life span on average at which point they would have served their useful life,,, one assumption.. nuclear power would continue to construct plants to pick up the slack. Once the massive utility companies began to realize the massive profits and the lul in the nuclear industry.. they decided to find ways to justify life time extensions, 20 year renewals/extensions etc. and now we have as a result reduced safety postures.... personal opinion

by dean 7/24/2011 1:00:11 AM

@elainekirk Maybe that is the valve that is supposed to prevent backflow into the other unit's pipe. The crane was there on day 1, it is what was mistaken for a fuel assembly in the first shakey SDF video.
by lillymunster 7/24/2011 1:01:19 AM

@Thunder the framework could be built like that so when they dismantle the old building which they will have to do to get at anything, they can the put floors on that frame work which will need to be strong as forklifts , cranes etc will need to be hoisted up. The fabric will probably have zippers to give cranes access to lift the heavy gear onto the floors #justmyimagination
by elainekirk 7/24/2011 1:02:01 AM

maybe they should have some windmills on each corner of that structure and some solar panels on top for lighting in side..
by dean 7/24/2011 1:02:19 AM

@lillymunster , were not we looking for just this type of info? the primary containment composition of various npps in the US?
by Peter Melzer 7/24/2011 1:04:48 AM

@thunder: looks like a very strong construction, really possible, its first step to"sakophag"
by @dean: so it is, i think too 7/24/2011 1:04:56 AM

Japan Nuclear Emergency Twitter: Conversing with the people working at the nuclear accident site, Internal radiation dose of 80 microsieverts from eating 2 pounds of radioactive beef , Hamaoka to get seawalls of 18 meters etc.... paper.li
by Majj 7/24/2011 1:06:09 AM

@Peter Melzer Yes I just notice that in the table.

@all - this document tells us what units in the US have the steel/concrete like FUKU. Brunswick has it according to this.
by lillymunster 7/24/2011 1:06:11 AM

time for some dinner with grandbabies... be back in a bit
by dean 7/24/2011 1:07:20 AM

wonder, how to plan and construct this monster of "tent" in short time
by @dean: so it is, i think too 7/24/2011 1:08:14 AM

g'night all :)
by elainekirk 7/24/2011 1:08:30 AM

OK...after that thrill-ride of a document I think I'll go do something sane... like walk my puppy. ;)
by RadioGuy 7/24/2011 1:13:51 AM

Nite Elaine!
by lillymunster 7/24/2011 1:15:36 AM

It's more than a bit scary to realize that as little attention has been paid to our NUCLEAR infrastructure as to our crumbling roads, bridges, buildings etc.
by RadioGuy 7/24/2011 1:17:30 AM

by Cat via I52.tinypic 7/24/2011 1:24:22 AM

by Cat via I53.tinypic 7/24/2011 1:24:22 AM

by Cat via I53.tinypic 7/24/2011 1:24:22 AM

This isn't good. Japan turning away patients at record rate. What if they have an increase in illness and treatment need? search.japantimes.co.jp
by lillymunster 7/24/2011 1:24:28 AM

@RadioGuy Many of those finds are now 20 years old. What do those plants look like with another 20?
by lillymunster 7/24/2011 1:26:15 AM

No nuke posters gallery nonukeart.org
by lillymunster 7/24/2011 1:26:47 AM

by Cat via I52.tinypic 7/24/2011 1:27:46 AM

And this the 19th and last image they'pics\k1anvb.jpg[/IMG] Sorry tired bed calls.
by Cat via I56.tinypic 7/24/2011 1:31:14 AM

If they have carried on taking regular images since 19th of March it would be a great way to see the changes at the site
by Cat 7/24/2011 1:33:15 AM

So far this is my fav from the poster site. 29.media.tumblr.com
by lillymunster via 29.media.tumblr 7/24/2011 1:33:57 AM

Another not thought of contamination source - cow dung/compost ex-skf-jp.blogspot.com
by lillymunster 7/24/2011 1:46:30 AM

Peter, if your still around. Would these patch jobs on the steel containments be weak spots?
by lillymunster 7/24/2011 1:54:02 AM

@lillymunster , I am back, depends on how well it's done. That is, the materials need to be fully compatible to prevent corrosion. I'd mistrust it more, if they tried to patch rpv shells.
by Peter Melzer 7/24/2011 2:03:42 AM

@Peter Melzer I worry about the steel only containments if they are welding in patches. I would assume cut and paste where they weld a new panel in could be a weak spot?
by lillymunster 7/24/2011 2:14:31 AM

back for a bit
by dean 7/24/2011 2:18:02 AM

@ peter, chapter 7 was very interesting indeed..
by dean 7/24/2011 2:21:52 AM

@lillymunster. Yes it is going to spread through compost, insects, micro organisms. I keep thinking that all their talk about contaminated straw is really misleading. They must know that if that got irradiated so did everything else in the food chain. What are they going to do with all those lovely sunflowers. Notices for the kids and the birds saying don't eat the seeds. Round us the seagulls were found to be radioactive because they paddle around in Sellafield's dirty ponds and tips. I never heard that they did anything about it. The "pretend it isn't happening, and it will go away" seems to have worked pretty well in the past. So what if cancer rates go up in the area. It could be down to other factors (I knew 3 children round here who died of cancer before they were 25, plus one Sellafield safety inspector who's 3 kids were still at primary school.
by Cat 7/24/2011 2:23:30 AM