Japan Earthquake

Japan Earthquake | Page 1268

@RBeaner that is not correct. Look again at the images of the vent stacks. The most northern one has multiple pipes in the tower. That handles the common fuel pool and environmental plant, possibly some other locations. The next tower to the south handles 3-4, the one after that handles 1-2 and then one off at 5-6 for those two units. There are a number of images that show 1-2 sharing a tower.
by Nancy 5/19/2011 6:38:27 PM

@Nancy I'm not claiming expertise here, but per the pic Markfm provided www.tepco.co.jp There are 4 stacks for 6 plants. I can't remember when each buit, but I repeat my question earlier, Does 1 and 2 have separate control rooms (built diff times), 2 + 3 have combined control rooms and stacks (built together) and 5+6 combined control rooms and stacks, (built together)??
by RBeaner 5/19/2011 6:51:54 PM

18 vs. 19 May 6:00 plant parameters. #1 -- with the decrease in water injection #1 RPV temps are up 5 and 9C, 102C on one reading, RPV pressure picked up another 20kPa, DW temps up 6C, around 90C, and the D/W CAMS is bouncing, B rising 11 to 36 Sv/hr.
by Markfm 5/19/2011 6:55:44 PM

@Nancy Remember the discussion of combined control rooms for different reactors, and how that could add significantly to the inappropriateness of the casualty response??. In TMI it was supposed that overall # of alarms prevented them from seeing the ONE that mattered (relief valve).
by RBeaner 5/19/2011 6:56:01 PM

Pretty sure the control rooms are paired like the stacks -- 1&2, 3&4, 5&6. The 4th stack is for CSP (and maybe something else near it).
by Markfm 5/19/2011 6:56:29 PM

@RBeaner 1-2 3-4 5-6 are combined in their shared control rooms and vent stacks. The additional vent stack being for the common pool. Picture of 3-4 shared vent tower. www.houseoffoust.com
by Nancy via Houseoffoust 5/19/2011 6:57:23 PM

picture of 1-2 shared tower www.houseoffoust.com
by Nancy via Houseoffoust 5/19/2011 7:02:29 PM

@Nancy That last pic you showed , i don't thin it is 1-2, i think it is 3-4
by RBeaner 5/19/2011 7:05:33 PM

@RBeaner Look to the right of the right reactor, those are admin and other buildings. Plus if you look at the left of the image you can see a bit of reactor 3.
by Nancy 5/19/2011 7:07:19 PM

This is the 4 stack that is the far north tower that services the common pool and other venting www.houseoffoust.com
by Nancy via Houseoffoust 5/19/2011 7:07:56 PM

@RBeaner I looked at the pic you cited. From right to left (5-6)shared tower, (1-2) shared tower, (3-4) shared tower, common fuel and others large wider tower with 4 vent pipes. The 4 pipe tower is the furthest left and is left/north of reactor 4.
by Nancy 5/19/2011 7:09:34 PM

Back to 18 vs 19 May plant parameters. #2 shows stable or decreasing values, minor +2C on the HVH return temp. #3 still getting 18 cubic m/hr water injection, shows +5C on one RPV temp, -9C on the other (both at about 114C), DW RPV bellows temp reported down almost 30 at 115C, with HVH return down 10 at 115C, radiation continuing slow decrease. #5 showing stable RPV and SFP temps, 47C and 43C. #6 RPV is down 21C to 27C, while SFP is up 5 to 37C. (Net, 5 &6 aren't showing anything bad)
by Markfm 5/19/2011 7:10:25 PM

Japan Tsunami 2011: TEPCO Releases Dramatic Photos Of Wave Striking Fukushima Nuclear Plant

New photos of tsunami striking Fukushima nuclear plant - slideshow

www.huffingtonpost.com
by joniver 5/19/2011 7:13:38 PM

@Nancy OK sorry, looks like I got my numbering screwed up, from bottom to top of this pic www.tepco.co.jp is 4...3...2...1...5...6, yes?
by RBeaner 5/19/2011 7:14:51 PM

steam pipes connection to tower: www.spiegel.de
by Edano via Spiegel.de 5/19/2011 7:20:27 PM

@joniver : why sorry ? we found the same on same time. ;)
by Edano 5/19/2011 7:22:03 PM

@Edano Did we? Oh well you know what they say about minds.
by joniver 5/19/2011 7:23:47 PM

@Markfm Thats good info...but, I think the upgrades they were talking about was the Hardening of the system. Emergency disharge should bypass the filters. It means radioactivity to the immediate area, but can decrease the results of explosive release
by RBeaner 5/19/2011 7:25:18 PM

RBeaner, no disagreement from me. "According to the NYT, the new venting system bypasses filters that hold back much of the radioactivity. "
by Markfm 5/19/2011 7:27:02 PM

There is a diagram here it repeats what has been found and shows position of control room may or may not be useful www2.jnes.go.jp
by elainekirk 5/19/2011 7:27:16 PM

@Edano , this is a view from the Radiation Waste Treatment Facility to the fat tower with four pipes which is not connected to the reactors.
by Peter Melzer 5/19/2011 7:28:01 PM

@you : well, in fact nancy said "north tower", but isn't it south ?
by Edano 5/19/2011 7:29:32 PM

@Edano You are correct, I had the north-south flipped on that. 5-6 are most north with the common pool & tower south
by Nancy 5/19/2011 7:30:57 PM

i think he made the photos for the car insurance....
by Edano 5/19/2011 7:34:18 PM

@Markfm Thanks for finding that. The NYT article was the one I originally read but could not find "The new vents were designed to send steam and gas directly from the reactor’s primary containment, which houses the reactor vessel, racing past the usual filters and gas treatment systems that would normally slow releases of gas and eliminate most radioactive materials. "
by Nancy 5/19/2011 7:35:04 PM

.... so they will not say it was not properly parked.
by Edano 5/19/2011 7:35:22 PM

@Edano I would hate to be an auto insurance claims adjuster in Japan these days....
by Nancy 5/19/2011 7:35:58 PM

@Nancy : well, they have to pay for your extra hours, not too bad.
by Edano 5/19/2011 7:39:03 PM

@Edano, on the side, the pic shows the flooding of a location quite close to the waterfront. Tepco claims it was taken approx. 15:43. That does not chime well with their notion that the tsunami hit 41 minutes after the quake, that would be 15:27. Tepco is not very precise with their timing.
by Peter Melzer 5/19/2011 7:40:01 PM

Details of Japan Earthquake Explain Its Extraordinary Strength and Unexpectedness
www.scientificamerican.com
by Panserbjorne9 5/19/2011 7:46:21 PM

will be out of the office for a few hours. be back in maybe 3hrs?
by Nancy 5/19/2011 7:50:29 PM

@Edano Extra values of safeguards, ca work the other way.. Enrico Fermi, they wanted to prevent nuclear meltdown, so late in the game, they added these ceramic pltes. One of those ceramic plates floated up to cut off water flow in the cooling channels. Humans just screw up...
by RBeaner 5/19/2011 7:51:13 PM