Japan Earthquake

Japan Earthquake | Page 749

The newest images we have are from the drone flight that was the 14th I think? The overhead I posted with steam out of the building is from then.
by Nancy 4/18/2011 2:18:15 PM

@Nancy: you might compute the approximative amount of water that was spread on #4 SFP, then the volume of 5 meters of the building basement, then you may find the 2 numbers are of the same order...
A weak computing gave me 4000 m3 of water there (half of 5m x 40m x 40m); this seems a lot more of what RPV would contain (5m inside diameter, 20 meter high would be 400 m3...) but seems consistent (to me) with the amount of water that was spread in the building.
by Jocelyn Mayer 4/18/2011 2:18:15 PM

@Jocelyn Mayer so your saying we have equal water in to water out? Could the RPV drain elsewhere than the building without taking the rest of the water in the building with it?
by Nancy 4/18/2011 2:19:35 PM

@Nancy I think it's like what Mark was intimating, almost all of the water is still there.
by Jim Carver 4/18/2011 2:20:38 PM

The latest press release says covering it is a priority.
by Jim Carver 4/18/2011 2:22:44 PM

@Nancy: I see no reason for #4 RPV to leak. Even if it did, the amount of water from there would not be significant: 400 m3 total (maybe less ?) when Tepco does spread 150 m3 in the SFP some days...
The RPV could have leaked anywhere, in the building, in the turbine room, ... The only way I can see for it to drain water from the SFP would be the SFP flowing into the RPV through the refuelling gate.
by Jocelyn Mayer 4/18/2011 2:23:05 PM

@all: still got to work... Trying to follow, but no real-time for me...
by Jocelyn Mayer 4/18/2011 2:24:14 PM

I just noticed something else that doesn't add up. This interior image of 3. The fueling crane can not straddle the sfp. www.houseoffoust.com But on #4 the crane is over the SFP and almost at the end of the wall. www.houseoffoust.com
by Nancy via Houseoffoust 4/18/2011 2:24:24 PM

I just noticed something else that doesn't add up. This interior image of 3. The fueling crane can not straddle the sfp. www.houseoffoust.com But on #4 the crane is over the SFP and almost at the end of the wall. www.houseoffoust.com
by Nancy via Houseoffoust 4/18/2011 2:24:24 PM

@Jocelyn Mayer take care
by Jim Carver 4/18/2011 2:24:47 PM

So if we think the water in still in 4's RPV why the heat? Or that heat isn't in the RPV. Like I mentioned I think it is in front of the Yellow cap to the seaside direction. Nothing really visible on images as being there.
by Nancy 4/18/2011 2:25:58 PM

@Nancy I think this one stumps everybody. idk, not my dept:) just kidding, but I would like to know.
by Jim Carver 4/18/2011 2:28:45 PM

@Jim Carver It raises some good questions that I think we need to keep an eye on. Hoping I can get more interior images to make a more reliable floor map of 4. Will be interested to see tomorrow's heat images. Anyone see any changes in the shared fuel pool building from yesterday. We thought we saw steam coming out of it and there was a power loss there for part of the day.
by Nancy 4/18/2011 2:30:22 PM

@Nancy: the crane can straddle the SFP (or no way to do refuelling...), this is a perspective distortion....
About the thermal image: even if no fuel rods inside, the RPV is radioactive: water is, steel is, ...
This could emit some heat. You can not the temperature isn't high; you should also take care: water and steel infrared photon emissivity is higher than concrete one, which means water or steel emits more photons than concrete when being at the same temperature, then appear hotter on raw images;
don't know the exact difference, it depends on photon wave-length, actual temperature, ..., but you have to assume a difference of 1 or 2 °C may not be significant unless the pics have been reworked to take care about material emissivities.
by Jocelyn Mayer 4/18/2011 2:31:52 PM

I'm at the office and keep getting interupted.. grrrrrrrrrrrrrrrrrrrr.... sorry I can't dive right into this everyone... after I get some emails done I can..
by dean 4/18/2011 2:33:31 PM

@Nancy there was a lot of steam. Yes, we need some more data..Jocelyn, some good points, I had tried on that, but you put it much more eloquently.
by Jim Carver 4/18/2011 2:34:16 PM

I'm a crappy typist too!
by Jim Carver 4/18/2011 2:35:37 PM

Ok I know now on 100%, the source is in core
by xxx 4/18/2011 2:36:34 PM

@xxx How do you know this?
by Nancy 4/18/2011 2:36:53 PM

I draw some lines... old good solution
by xxx 4/18/2011 2:37:42 PM

@xxx I thought it was, but i don't know enough about this to have an opinion.
by Jim Carver 4/18/2011 2:39:17 PM

If the crane is still in the true position this should be the reactor well location on 4 by the yellow circle www.houseoffoust.com
by Nancy via Houseoffoust 4/18/2011 2:39:36 PM

Pink lines are crane tracking, green lines the building mid lines. Today's heat shows to be straddling the mid line long ways and past the short side midline closer to the north collapsed wall
by Nancy 4/18/2011 2:40:27 PM

by xxx via Img155.imageshack.us 4/18/2011 2:40:47 PM

counting the roof beams helps figure out locations that perspective screw with.
by Nancy 4/18/2011 2:40:50 PM

@xxx That isn't today's but probably close to the well area. So what are today's heat images?
by Nancy 4/18/2011 2:41:29 PM

today's image for comparison www.houseoffoust.com
by Nancy via Houseoffoust 4/18/2011 2:42:44 PM

@Nancy this is from 10th becouse new image is cut by temperature scale
by xxx 4/18/2011 2:42:46 PM

Tepco release: whole lotta spraying going on, almost 4 hrs......From 5:39 pm to 9:22 pm, April 17th, the spent fuel pool of Unit 4 was
sprayed with water using the concrete pumping vehicle.
by marie rich 4/18/2011 2:42:55 PM

That's per the 17Apr.
by marie rich 4/18/2011 2:43:15 PM

@marie rich and hence the steam.
by Jim Carver 4/18/2011 2:43:34 PM

Gotta admit, this makes me want to go out and buy a new car "Four automakers measured the radiation levels of 215 vehicles over the 11 days to last Friday and did not detect levels that could pose a threat to human health, the Japan Automobile Manufacturers Association said."
by Markfm 4/18/2011 2:43:43 PM

@xxx see what I mean though about today's being on the long midline but the earlier ones like you just posted are offset of that midline?
by Nancy 4/18/2011 2:44:07 PM

@Nancy Maybe you'll be able to tell more when you can see new heat images after 17th's massive dousing.
by marie rich 4/18/2011 2:46:16 PM

Im must look on this more,
by xxx 4/18/2011 2:47:18 PM

@Markfm lol I want mine with PU Power myself. @ll email me if you need anything. I've gotta get going.laters..oh yeah @Nancy I am interested in what you guys come up with.
by Jim Carver 4/18/2011 2:47:21 PM

They have only been monitoring the deep well once a week?! Surprise! And the sub-drains' water is more radioactive than before- surprise! We conducted nuclide analysis on subsurface water (sub drain) near the
turbine buildings and detected Iodine-131, Cesium-134 and Cesium-137 on
April 6th and 13th. As a radioactive dose of the sample collected on
April 13th increased compared to that of April 6th, we received an oral
instruction from Nuclear and Industrial Safety Agency to strengthen the
monitoring. In response, we increased the frequency of the sampling of
the subsurface water (sub drain) of Units 1 to 6 and deep well located
in the station from once a week to three times a week. We detected
Iodine-131, Cesium-134 and Cesium-137 during the sampling survey on
April 16th.
by marie rich 4/18/2011 2:49:15 PM

@marie rich @xxx Digging through images on 4 again. Should have some new mark ups but think I actually found the well on 4 on an overhead by using the crane as a landmark, drew lines back and then found the dark reactor well lip. seems to be about the area of some of the offset heat signatures.
by Nancy 4/18/2011 2:52:18 PM

@Nancy, take into consideration that 25 degrees Celsius is about as warm as the water in the Gulf of Mexico now. The lower the temp, the greater the variation in local distribution.
by Peter Melzer 4/18/2011 2:52:56 PM

@Nancy your picture is wrong, the wall line of reactor is not so close to two big pipes, this becouse this thermal image is bad quality
by xxx 4/18/2011 2:53:19 PM

@Nancy Tepco's release on the common fuel pool (if true, heh) would indicate no problem. Elec. only lost for a few hours. At 2:34 pm, April 17th, the occurrence of a short circuit caused by the
lack of repair of the end of the unused cable which is connected parallel
to the power of spent fuel common pool caused the circuit breaker of the
power side to open resulting in suspended power supply to the spent fuel
common pool. However, at 5:30 pm, April 17th, the power of the spent fuel
common pool was restored after the removal and inspection of the cable.
by marie rich 4/18/2011 2:53:29 PM