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imnotclever
Mar 11, 2011, 1:54 PM
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GET your everything ready!
(cough, cough)
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edge
Mar 11, 2011, 3:32 PM
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Vegas will be on the ocean naow?
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wjca
Mar 11, 2011, 4:19 PM
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imnotclever wrote: GET your everything ready! (cough, cough)
Dammit! I need at least 2 more good weekends before I can get all of my everything ready. Right now I've only got like 82% of my everything ready. I'm fucked.
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justroberto
Mar 11, 2011, 4:32 PM
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End of days! May 21! Errybody get ready for the demon onslaught!
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spikeddem
Mar 11, 2011, 4:34 PM
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Which one is the West Coast again?
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LostinMaine
Mar 11, 2011, 4:39 PM
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spikeddem wrote: Which one is the West Coast again?
Left.
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justroberto
Mar 11, 2011, 4:53 PM
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LostinMaine wrote: spikeddem wrote: Which one is the West Coast again? Left.
Whew. I was really worried about Disney World. Disney Land? Not so much.
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spikeddem
Mar 11, 2011, 5:33 PM
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justroberto wrote: LostinMaine wrote: spikeddem wrote: Which one is the West Coast again? Left. Whew. I was really worried about Disney World. Disney Land? Not so much.
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rrrADAM
Mar 11, 2011, 6:06 PM
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The devastation in Japan is terrible, and there is a lot of loss of life... But I am more worried about the nuke site out there that has lost offsight power and the EDG's didn't start, so they have no power... And that is BAD!!! They need to get those things up and running, and/or get power back to that plant, ASAP.
Edit... Emergency Diesel Generators
(This post was edited by rrrADAM on Mar 11, 2011, 6:08 PM)
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imnotclever
Mar 11, 2011, 6:11 PM
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rrrADAM wrote: The devastation in Japan is terrible, and there is a lot of loss of life... But I am more worried about the nuke site out there that has lost offsight power and the EDG's didn't start, so they have no power... And that is BAD!!! They need to get those things up and running, and/or get power back to that plant, ASAP. Edit... Emergency Diesel Generators
sounds like one of them lost cooling too. That can't be good.
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imnotclever
Mar 11, 2011, 6:13 PM
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imnotclever wrote: rrrADAM wrote: The devastation in Japan is terrible, and there is a lot of loss of life... But I am more worried about the nuke site out there that has lost offsight power and the EDG's didn't start, so they have no power... And that is BAD!!! They need to get those things up and running, and/or get power back to that plant, ASAP. Edit... Emergency Diesel Generators sounds like one of them lost cooling too. That can't be good.
In reply to: http://www.reuters.com/...t=Google+Feedfetcher Japanese media reported separately that a leak was possible at the plant north of Tokyo as water levels fall, and that some 2,000 residents had been told to evacuate the area. The government earlier said a cooling function at Tokyo Electric Power's (TEPCO) Fukushima Daiichi nuclear plant was not working, but there was no radioactive leakage. The IAEA said in a statement that nuclear fuel requires continued cooling even after a plant is shut down. |
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rrrADAM
Mar 11, 2011, 6:23 PM
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imnotclever wrote: rrrADAM wrote: The devastation in Japan is terrible, and there is a lot of loss of life... But I am more worried about the nuke site out there that has lost offsight power and the EDG's didn't start, so they have no power... And that is BAD!!! They need to get those things up and running, and/or get power back to that plant, ASAP. Edit... Emergency Diesel Generators sounds like one of them lost cooling too. That can't be good.
Exactly! They lost cooling, BECAUSE they have no power. Cooling is provided by circulating water with pumps, which require power, either electrical power, or steam. If a unit is offline, it is all electric pumps that provide that cooling. When offsite power is lost, the EDGs provide the power to safely shut down the unit(s) and provide power.
They need to get the EDGs up and running and/or restore offsite power.
#1 is to keep the fuel cool.
Note - The EDGs, of which there are more than one, are have numerous redundant systems, so they CANNOT fail. They are designed, as a system, to be failsafe, since a lot rides on it. I cannot, for the life of me, see how all of them could fail.
At US plants, even when we take one out of service to work on it, making it unavailable, we eneter an LCO (Limited Condidtion of Operation), and have a set time to get it available, or we have to take the unit(s) offline until we get it back in an avaliable status.
(This post was edited by rrrADAM on Mar 11, 2011, 6:28 PM)
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spikeddem
Mar 11, 2011, 6:26 PM
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Is it riskier to bring the plant back online and use its own power to provide energy for the pumps?
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rrrADAM
Mar 11, 2011, 6:29 PM
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spikeddem wrote: Is it riskier to bring the plant back online and use its own power to provide energy for the pumps?
At any nuke, when/if offsite power is lost, the first thing they do is shut down the units... Using the EDGs to do so.
Note - The EDG's used at nukes are the same types of diesel generators that are used to provide the power to drive a big passenger ships, oil tankers, or container ships, and all of its systems. They take up entire rooms... Big rooms.
(This post was edited by rrrADAM on Mar 11, 2011, 6:47 PM)
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spikeddem
Mar 11, 2011, 6:38 PM
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rrrADAM wrote: Note - The EDGs, of which there are more than one, are have numerous redundant systems, so they CANNOT fail. They are designed, as a system, to be failsafe, since a lot rides on it. I cannot, for the life of me, see how all of them could fail.
I seem to remember a similar lesson involving a boat and Leonardo DiCaprio.
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rrrADAM
Mar 11, 2011, 6:44 PM
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spikeddem wrote: rrrADAM wrote: Note - The EDGs, of which there are more than one, are have numerous redundant systems, so they CANNOT fail. They are designed, as a system, to be failsafe, since a lot rides on it. I cannot, for the life of me, see how all of them could fail. I seem to remember a similar lesson involving a boat and Leonardo DiCaprio.
Poor design/engineering, poor materials, human error, and over-confidence <> safe.
Edit... And to clarify, the EDGs are a system, in that even if one or more do not start, the 'system' can still safely shut down the unit(s) and provide cooling for an indefinate period. This is why there are more individual EDGs than is required to safely shut down the unit(s), for redundancey. I can see one not starting, but not all.
Also, each EDG is tested often, and if any of them does not start in <10 seconds, I believe we enter an automatic LCO, and the NRC is notified.
(This post was edited by rrrADAM on Mar 11, 2011, 7:16 PM)
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donald949
Mar 11, 2011, 7:15 PM
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spikeddem wrote: justroberto wrote: LostinMaine wrote: spikeddem wrote: Which one is the West Coast again? Left. Whew. I was really worried about Disney World. Disney Land? Not so much. I was confused until Roberto cleared up my remaining confusion with explaining that it's the one with Disney Land.
Alas, we went out to watch the ocean this morning at the alotted time, but could see nothing. Although I do have a freind who lives on a boat in San Diego harbor. When the chilie tsunami hit, he said the water went up down more than a little every 20 minutes in the harbor. He could tell by how tight and slack the morings got.
Very Sad about the damage in Japan.
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enigma
Mar 12, 2011, 12:11 AM
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donald949 wrote: spikeddem wrote: justroberto wrote: LostinMaine wrote: spikeddem wrote: Which one is the West Coast again? Left. Whew. I was really worried about Disney World. Disney Land? Not so much. I was confused until Roberto cleared up my remaining confusion with explaining that it's the one with Disney Land. Disneyland, that sounds familiar. Alas, we went out to watch the ocean this morning at the alotted time, but could see nothing. Although I do have a freind who lives on a boat in San Diego harbor. When the chilie tsunami hit, he said the water went up down more than a little every 20 minutes in the harbor. He could tell by how tight and slack the morings got. Very Sad about the damage in Japan.
As well as evacuations in N.Calif Curry Village, Oregon, Washington Pacific County, British Columbia Canada, Guam, Mexican Border to Chignik Bay in Alaska.
Scientists warned the first tsunami waves are not always the strongest.
The Japanese
Fukushima Daiichi Nuclear Plant has made radiation levels surge outside to 1.5 times the level considered normal, the government said it will release slightly radioactive vapor from the unit in an effort to protect it from possible meltdown.
Very sad.
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