John Lansford
Posts: 2662
Joined: 4/29/2002 Status: offline
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quote:
ORIGINAL: nashvillen For anyone interested in radiation effects, I found this to be interesting: http://blog.xkcd.com/2011/03/19/radiation-chart/ That's a useful chart, but the XKCD writer admits he probably made some mistakes with it. I've always been interested in nuclear power generation. I joined the USN back in the 70's with an eye towards operating nuclear plants, then went to college with the same intent. TMI happened right about that time, so I changed to civil engineering when it was plain the US nuclear industry was going to come to a screeching halt. I kept up with the technology and terminology though, never knowing here in 2011 I would be helping explain what was going on to my more ignorant friends and acquaintances. It looks like the Japanese dodged a huge bullet here. I doubt any of their disaster training simulations called for the following: -Earthquake that devastates the surrounding area, and cuts the offsite power to the reactors (control rods go in, backup generators on!) -Now we'll have a tsunami take out the generators at Reactors 1 and 3 (ok, batteries online, call for emergency generators pronto!) and makes the 2nd and 3rd shift personnel hard to get here, oh and it destroys most of your emergency vehicles too -Ooops, those backup generators use the wrong power phase for our purposes, they won't work (ISTM that at this point the plan book ran out of instructions). Wow, those cores are getting hot. (Vent hydrogen out, pump water in!) -Hydrogen explosion in containment building for Reactor #1! (screw it, seawater flooding of the vessel NOW!) -BIG Hydrogen explosion in containment building for Reactor #3! (same thing, seawater in the vessel!) -Hey, Reactor #2 is overheating now; where are the operators watching it? They're dealing with Reactor #1? Look at the water level; the core's exposed! OMG!!!! -Partial meltdown in Reactors 1, 3 AND 2! Another hydrogen explosion, this time at Reactor #2, torus rupture! (seawater flood again!) -Anyone check the spent fuel ponds? Getting a lot of ground radiation from somewhere. What's that? A fire in Reactor 4's containment building? How did that hydrogen explosion happen there? The reactor's shut down! -Oh s**t, now Reactor 3's spent fuel pond is getting hot. We need armored vehicles just to get near these buildings! I mean, come on, anyone who came up with a disaster scenario training exercise like this would be beaten to death by the plant management. I do wonder, though, why they had to go get radiation resistant vehicles from the SDF, and high capacity pumping trucks from Tokyo FD, when someone should have had them available in TEPCO somewhere. At least it looks like they've got power back to all the reactors, and are now checking the pumps and switches before turning anything on. Once they get the main pumps going again the threat of more damage or explosions should go way, way down.
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