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DancingMonkey
Supreme tranceaddict

Registered: Aug 2007
Location: History
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http://bravenewclimate.com/2011/03/...le-explanation/
Kevin Lea, on 15 March 2011 at 3:02 PM said:
"Also, as soon as the zirconium metal melts in the presence of water, it produces hydrogen gas. The hydrogen explosions at the Japanese power plants were due to hydrogen given off by the melting zirconium. This is proof positive that very significant melting has occurred. Three Mile Island also had several hydrogen explosions due to the melting of the core but they were all contained within the containment dome since the TMI design does not have a building outside of the dome."
"This meltdown is much more serious than the author portrayed. However, he is correct in stating that if the containment is not breached, then the disaster will be limited, just like it was at Three Mile Island. However, if the containment is breached, the tens of thousands of Rem (measure of radiation) per hour of fission product radioactivity that will be around for decades will be spread into the environment and create a disaster similar to Chernobyl.
If a person receives 500 Rem in a short period of time, they have a 50% chance of dying. Typical background radiation is about 100 millirem (one tenth of a Rem) in one year."
Excellent. So now we just all have to pray that the last line of defense works, or we're probably dead.
Hooray.
___________________
It looks like you ain't got no pants on there buddy!
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Mar-15-2011 18:28
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Jackson
Supreme tranceaddict

Registered: Nov 2002
Location: t'North England
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Mar-15-2011 20:01
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Joss Weatherby
Banned

Registered: May 2008
Location: The Pacific Northwest, of course
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The amount of contradictory statements I am reading is amazing.
Listen, radiation is dangerous, but its not like poison gas, it won't start killing people instantly, at least not in the amounts that could be released even under a worst possible case scenario.
Everyone freaking out on the west coast (I read something in a Daily Mail article, lol, which said that people on the west coast had all bought potassium iodide tablets in panic and people would couldn't get them were crying) has little to worry about. The Pacific is HUGE, it contains incredibly active weather patterns, including rain and high winds. Even in a worst case scenario the amount of radiation reaching here would be barely visible above background levels and certainly not a health hazard.
Again, from everything I have read, the worst possible case is a total failure of the containment structure, from THE BOTTOM down. This would allow another safety feature of this BWR style design to initiate, and that is for the molten fuel to pool in the base and spread out in to a non-critical mass, again cooling.
The chance of this radiation being exposed widely to the atmosphere is small, because if there is a failure of the containment vessel, then the whole system becomes unpressurized, negating the chance for a large steam explosion, which is usually the method of dispersal for radioactive fall out in a nuclear accident.
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Mar-15-2011 20:50
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