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Old 03-11-2011, 01:45 PM
 
3,004 posts, read 3,879,591 times
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This can't be good.
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Old 03-11-2011, 01:52 PM
 
Location: deafened by howls of 'racism!!!'
52,541 posts, read 34,259,842 times
Reputation: 29173
Quote:
Originally Posted by uggabugga View Post
Quote:
Using Air Force planes, the U.S. government has sent over coolant for the Fukushima plant, Secretary of State Hillary Clinton said Friday.

"We're really deeply involved in trying to do as much as we can on behalf of the Japanese and on behalf of U.S. citizens," she said.

Japan struggling to cool down nuclear reactor, minister says - CNN.com
^wondering about this now - don't they simply use water to cool with?
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Old 03-11-2011, 02:00 PM
 
41,815 posts, read 50,920,524 times
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They backed off that statement, Hillary misspoke and the Japanese don't need any coolant. The issue is power.

Quote:
http://news.yahoo.com/s/ap/20110311/ap_on_bi_ge/as_japan_quake_power_plant (broken link)

Speaking at the White House, Secretary of State Hillary Clinton also said U.S. Air Force planes were carrying "some really important coolant" to the site, but administration officials later said she misspoke. The U.S. offered to send Japan coolant to help with the reactor but the Japanese declined, saying they already had the necessary supplies, the officials said, speaking on condition of anonymity because they were not authorized to speak publicly on the matter.
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Old 03-11-2011, 02:11 PM
 
41,815 posts, read 50,920,524 times
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Quote:
Originally Posted by chattypatty View Post
This can't be good.
This is one of those wait and see situations. These reactors have redundant systems. According to the Yahoo article the secondary backup system has partially failed. they still have an emergency system but that apparently is only for short term because it has lower capacity.
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Old 03-11-2011, 02:14 PM
 
46,892 posts, read 25,860,181 times
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Quote:
Originally Posted by Darkatt View Post
Scram the reactor, drop the rods and the carbon core (or whatever material was used) will absorb the radioactive Neutron emissions, and drop the temperature.
Decay heat. Even if the reaction is stopped, the fission products in the fuel elements will continue to emit radiation and that will generate heat. It drops off quickly, but it's not insignificant. (Looked it up. About 7% of the reactor's power at the moment of shutdown. That's actually more than I thought.)

If there's no coolant circulating, that's a lot of heat, and it has to go somewhere.
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Old 03-11-2011, 02:25 PM
 
Location: Just East of the Southern Portion of the Western Part of PA
1,272 posts, read 3,699,938 times
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Quote:
Originally Posted by Dane_in_LA View Post
Decay heat. Even if the reaction is stopped, the fission products in the fuel elements will continue to emit radiation and that will generate heat. It drops off quickly, but it's not insignificant. (Looked it up. About 7% of the reactor's power at the moment of shutdown. That's actually more than I thought.)

If there's no coolant circulating, that's a lot of heat, and it has to go somewhere.
Correct - the plant is already shutdown. The decay heat is now the concern and must be removed. There are a number of redundant systems that can do this, and it is not clear which option they are currently using.

The odds of this becoming a serious safety threat is most likely low.
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Old 03-11-2011, 02:32 PM
 
Location: The Republic of Texas
78,866 posts, read 46,504,056 times
Reputation: 18520
Quote:
Originally Posted by HappyTexan View Post
Oh my..this is not good. Even if they say "slightly radioactive".
That sounds like " a little bit pregnant". And not to worry...radioactive vapor will not effect the environment or humans ?

Like the BP spill didn't effect sea life in the Gulf ?

Japan to release of radioactive vapor at nuke pant - Yahoo! News (http://news.yahoo.com/s/ap/20110311/ap_on_bi_ge/as_japan_quake_power_plant - broken link)
"Japan's nuclear safety agency says pressure inside one of six boiling water reactors at the Fukushima Daiichi plant had risen to 1.5 times the level considered normal.

The agency said the radioactive element in the vapor that will be released would not affect the environment or human health."

look at the wind currents and the jetstream!!!!!!!!!!!!!!!!!!
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Old 03-11-2011, 03:02 PM
 
Location: deafened by howls of 'racism!!!'
52,541 posts, read 34,259,842 times
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drudge has a link to kyodonews of '1000x normal' radiation at the fukushima plant, so maybe the release has begun. can't access the link right now though.
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Old 03-11-2011, 03:08 PM
 
Location: Great State of Texas
86,052 posts, read 84,321,515 times
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Quote:
Originally Posted by uggabugga View Post
drudge has a link to kyodonews of '1000x normal' radiation at the fukushima plant, so maybe the release has begun. can't access the link right now though.
Here's a BBC link..they think there might be a leak.
If not cooled down could cause a meltdown. Live updates on the feed in the left column. The aftershocks are even bigger than the main quake was.

BBC News - Japan earthquake
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Old 03-11-2011, 03:13 PM
 
Location: Wherever women are
19,012 posts, read 29,663,567 times
Reputation: 11309
Quote:
Originally Posted by slackjaw View Post
Great, this will be twisted and amplified to be used by the "no nuclear power" crowd.

Maybe they'll make a new Stalker expansion pack.
No kidding. I have about 25K invested in nuke energy alone If this goes out of control, everyone knows how the market will react.
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