
on the one hand, yes, they must be toast, but on the other hand, it makes no sense to measure distant temps. i don't understand it.
by Edano 9/21/2011 12:01:04 PM

@Edano did the document for these get posted?
by lillymunster 9/21/2011 12:01:59 PM

@lillymunster the diagrams ?
by Edano 9/21/2011 12:02:41 PM

the picture you just posted
by lillymunster 9/21/2011 12:02:59 PM

@lillymunster i use them in the plots. they are from tepco and had japanese names, i translated them.
by Edano 9/21/2011 12:03:58 PM

trying to find the source
by Edano 9/21/2011 12:06:02 PM

found them, but can't upload pdfs .....
by Edano 9/21/2011 12:15:38 PM

by Edano 9/21/2011 12:17:19 PM

Hudebnik's translation wasn't correct, i did it again.
by Edano 9/21/2011 12:18:23 PM

by Edano 9/21/2011 12:20:19 PM

@Edano Spiffy! I was trying to find gauge locations the other day.
by lillymunster 9/21/2011 12:20:32 PM


@lillymunster ok, but you have seen this, eh ? :) www.houseoffoust.com

@Edano I see the graph but hadn't seen the image on the left?
by lillymunster 9/21/2011 12:22:03 PM

@lillymunster all my temp graphs have the locations, from the beginning :)
by Edano 9/21/2011 12:22:49 PM

@Edano I have looked at those so many times and didn't notice it had the sensors marked. ::facepalm::
by lillymunster 9/21/2011 12:30:33 PM

RT @TEPCO_English: Currently, the video streaming is in trouble and suspended. We are sorry for the inconvenience.
t.coby elainekirk 9/21/2011 12:31:05 PM

@lillymunster :)
by Edano 9/21/2011 12:31:48 PM

still it's a mystery that this expert says that they measure the temps outside of the reactors. must be a misunderstanding or mistranslation.
by Edano 9/21/2011 12:32:20 PM

it was quite a hard work to make the diagrams, graphs, colors and data match, but it is all correct in the plots.
by Edano 9/21/2011 12:34:36 PM

@Edano From what Dean and RBeaner have said, there is a sensor inserted inside whatever area. There was discussion about if they could withstand various temps without burning or melting. They have cable runs to the sensors, I remember reading something about anomalies caused by cable damage in a theoretical accident paper.
by lillymunster 9/21/2011 12:34:55 PM

good morning all , evening, nite etc...
by dean 9/21/2011 12:35:03 PM

@dean Just the expert we need, your like a genie. :-)
by lillymunster 9/21/2011 12:35:56 PM

@elainekirk the last storm caused disruptions in power and internet from what a few people said. TEPCO is likely having problems keeping the video stream going.
by lillymunster 9/21/2011 12:37:05 PM

awww.. ty @lilly, I love being here
by dean 9/21/2011 12:37:14 PM

the thermometers can be quite simple, maybe they are bimetals and the data is piezoelectric.
by Edano 9/21/2011 12:37:35 PM

we have seen that the radmeters are simple, too. they just have an ionisation chamber and all the electric is outside somewhere.
by Edano 9/21/2011 12:39:18 PM

@dean hi dean
by Edano 9/21/2011 12:40:04 PM

chong.zxq.net @ lilly and elaine.. have you seen this
by dean 9/21/2011 12:40:31 PM

@Edano,, respects...
by dean 9/21/2011 12:40:45 PM

@dean This news story is an expert saying TEPCO should check internal temps in the reactor and that they are currently only checking external temps. Does it make any sense what he is talking about?
www3.nhk.or.jpby lillymunster 9/21/2011 12:41:04 PM

@dean had not seen that, nice timeline of the early weeks.
by lillymunster 9/21/2011 12:43:21 PM

weedinstrument.com @ Edano, here is some information on sensors
by dean 9/21/2011 12:43:26 PM

#3 control rods doc for you techi's
www.tepco.co.jpby elainekirk 9/21/2011 12:44:28 PM

the typhoon high winds will test the wind SHEAR design of the enclosures, especially if they are not in a completed stage
by dean 9/21/2011 12:44:59 PM

of course, there are high range thermometers which withstand very high degrees, they need them in steel casting industry. i have seen thermometers in a dental lab that withstands >2000 degrees for casting steel.
by Edano 9/21/2011 12:47:39 PM

@ lilly, maybe that statement in the link about TEPCO is an meant to mean the temperature sensors for internal to the reactor vessel are TOAST. There are many options for getting temperatures from other systems around the vessel and auxilliary systems that feed water to the reactor vessel and take water away.. it would be nice to know precisely the instrument ID NUMBER for their data
by dean 9/21/2011 12:48:39 PM

@dean there are some numbers, like 203-4A.
by Edano 9/21/2011 12:50:17 PM

@ Edano, in my esperience there are mainly 2-3 kinds of temperature measurement systems, one is thermocouples, one is RTD'S that are put into thermowells (those are metal cups that are welded into the piping) or the wet bulb type
by dean 9/21/2011 12:50:40 PM

@ Edano, I can't remember if we researched that 203-4A but we could.... if we could find the symbols for primary, seconday, auxilliary systems they are usually coded.. so 1--- could mean primary system, 2--- secondary system etc, then the 4A would mean something...
by dean 9/21/2011 12:52:42 PM

@dean but this is not internationally standardized, i guess ?
by Edano 9/21/2011 12:54:05 PM

I would think that the first BWR's from GE would have been similar to american plants
by dean 9/21/2011 12:54:45 PM

I need to shower and then go to office.. I will come back on and have more data on this @ Edano.. it won't take long to get there
by dean 9/21/2011 12:55:22 PM

okay, if they now say that all internal thermometers are toast, how can they ever prove their "cold shutdown" ?
by Edano 9/21/2011 12:55:52 PM

i feel like being fooled all the time. not for the first time.
by Edano 9/21/2011 12:58:24 PM