Japan Earthquake

Japan Earthquake | Page 1219

Heck of a "quench". Concerning volume, Edano, you had the radius of the RPV, etc., properly factored in. I believe it was late Friday afternoon (EST).
by Markfm 5/16/2011 8:53:56 PM

@dean from the documentary yesterday that's pretty much what happened -all except a skeleton crew evacuated
by UKVal 5/16/2011 8:54:05 PM

@ all... I think they initially had .. cool the reactor and get flow IN THEIR HEADS.. but it went from there to cool the corium, re-establish flow.. which doesn't equate.. it's a different game
by dean 5/16/2011 8:54:05 PM

@All, looking back at all the reactor stats the last few weeks, can't we assume by them that the RPV have been melted through by now, or still have corium dripping through them, into the CV, which has been breached into the drywell. Some of the pressures showed the drywell was outside air pressure, so that is breached somehow. We are starting to see some of the pressures go back up, which might be because the corium is clogging the breach.

by wtm 5/16/2011 8:55:00 PM

@UKVal This is how I visualize the basement...

farm6.static.flickr.com
by Rob in SF via Farm6.static.flickr 5/16/2011 8:55:00 PM

Those may 21 end-of-the-world people should volunteer at Fukushima. Be useful till then.
by Scilla 5/16/2011 8:55:01 PM

@dean - do you think that the fact that they had co-sited control rooms at Fukushima (2 reactors per control room) would have contributed to the chaos when all hell broke loose or would things have anyway been too far gone for it to make much difference?
by hudebnik 5/16/2011 8:55:06 PM

we have dose levels to save life with volunteers only ..(I"m not sure of a single person who wouldn't pick up dose to do that)... the other one is liimit to safe machinery and the plant.. that line of vollunteers is shorter
by dean 5/16/2011 8:55:17 PM

@RBeaner inteldaily.com Dying For Tepco?
by Maureen Burke 5/16/2011 8:55:43 PM

@Maureen Burke The guy started the day before, 1 hr after working, he died.. Probably exertion, like mowing a lawn
by RBeaner 5/16/2011 8:56:51 PM

@Rob in SF thanks - but I'm trying to think of how much space there is between the bottom of the RPV & likely contact with water. I know they planned to flood the containment vessel at 1 stage - not sure if they did though
by UKVal 5/16/2011 8:57:17 PM

dual reactor control rooms would have made it worse from an accident of this magintude.. I believe that there are common systems to each to contend with as well as.. a ton of alarms,, annunciators going off ... you all can't imagine.. I've been through a loss of commerical power with delay to get diesel on line due to trip.. and you just absolutely have to know that plant inside and out to recover
by dean 5/16/2011 8:58:26 PM

@UKVal, the Drywell is beneath the reactor, not same as basement, which is around the outside of the building and the reactor.
by wtm 5/16/2011 8:58:26 PM

@RBeaner : so they do not medically check their workers before they make them work. sounds good to me. like middle age.
by Edano 5/16/2011 8:58:58 PM

@dean - and did you rehearse for that sort of eventuality?
by hudebnik 5/16/2011 8:59:16 PM

@RBeaner You said "it sounds like his job, and the emergency, was over". I don't know what you mean by that.
by Maureen Burke 5/16/2011 8:59:29 PM

I took operators through all kinds of far fetched training scenarios..
by dean 5/16/2011 9:00:25 PM

@wtm thanks - I understood that but am confused - I need a diagram to make sense of it all
by UKVal 5/16/2011 9:00:56 PM

@dean - I used to do that for broadcasting emergencies at the BBC
by hudebnik 5/16/2011 9:01:33 PM

@Nancy, we have a reactor cross diagram somewhere showing the vessels and the drywell ?
by wtm 5/16/2011 9:02:35 PM

@nancy - I've a small suggestion re the structure of the new wikispaces website. It looks v looks good - one suggestion - would it be useful to have an up to date (and updated) 'what has happened up until today' section? A bit like the world-nuclear site pinned above but more up-to-date (and updated by us). Proven facts only tho, not theories.
by hudebnik 5/16/2011 9:03:01 PM

I am going to post the last piece of my research from which I will bring all the timeline assumptions (however late they are) for the initial 1 hour.... it's pretty late for all that but some here have spent time helping..
by dean 5/16/2011 9:03:16 PM

@Rob in SF. Is that another catch-22? Do they mean cooling with water might hasten melt thru?
by Scilla 5/16/2011 9:03:19 PM

@wtm I've seen cutaways but they're too general to help
by UKVal 5/16/2011 9:03:33 PM

www.ornl.gov fukushima is modified from this but not extremely different
by dean 5/16/2011 9:04:01 PM

@UKVal This help?

www.appsmini.com
by Rob in SF via Appsmini 5/16/2011 9:05:10 PM

@Scilla The larger gist is there is not enough research on molten corium concrete interactions to know what will happen.
by Rob in SF 5/16/2011 9:06:53 PM

I have a link to the Fukushima reactor schematics. I don't know how to embed it but here's the link: nei.cachefly.net
by Pedro Jesus via Nei.cachefly.net 5/16/2011 9:07:39 PM

@hudebnik We had discussed the idea of a daily update. Sort of what Mark posts plus some additional factual data in a wording most people could understand.
by Nancy 5/16/2011 9:08:55 PM