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IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours

 
Anonymous Coward
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05/23/2011 09:48 PM
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IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours
A meltdown occurred at one of the reactors at the Fukushima No. 1 Nuclear Power Plant three and a half hours after its cooling system started malfunctioning, according to the result of a simulation using “severe accident” analyzing software developed by the Idaho National Laboratory.

Chris Allison, who had actually developed the analysis and simulation software, reported the result to the International Atomic Energy Agency (IAEA) in late March. It was only May 15 when Tokyo Electric Power Co. (TEPCO) admitted for the first time that a meltdown had occurred at the No. 1 reactor at the Fukushima nuclear plant. [...]

According to the simulation, the reactor core started melting about 50 minutes after the emergency core cooling system of the No. 1 reactor stopped functioning and the injection of water into the reactor pressure vessel came to a halt. About an hour and 20 minutes later, the control rod and pipes used to gauge neutrons started melting and falling onto the bottom of the pressure vessel. After about three hours and 20 minutes, most of the melted fuel had piled up on the bottom of the pressure vessel. At the four hour and 20 minute mark, the temperature of the bottom of the pressure vessel had risen to 1,642 degrees Celsius, close to the melting point for the stainless steel lining, probably damaging the pressure vessel. [...]

[link to enenews.com]
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Re: IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours
bump
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05/23/2011 09:50 PM
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Re: IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours
TEPCO, the operator of the crippled Fukushima nuclear plant, had tried to fill the containment vessel of the No. 1 reactor with water, but it decided to abandon the plan after it discovered that a meltdown had occurred at the reactor.

Masanori Naito, director in charge of safety analysis at the Institute of Applied Energy, said, "TEPCO could have conducted similar analysis at an early stage and assumed the meltdown had occurred. TEPCO should have prepared other cooling methods besides the method of filling the reactor with water."

[link to mdn.mainichi.jp]
Anonymous Coward
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05/23/2011 09:55 PM
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Re: IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours
Better get a class action together before the supreme court takes it away
.::HoLYWaR::.

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05/23/2011 09:59 PM
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Re: IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours
At the four hour and 20 minute mark, the temperature of the bottom of the pressure vessel had risen to 1,642 degrees Celsius, close to the melting point for the stainless steel lining, probably damaging the pressure vessel. [...]

so 2 months later...how long before it eats through to water table and blows the fuck up?
Push the button light the match,
Feel the fault lines detach;
Crosshairs in the evening light,
I sit and watch the city burn tonight.
Anonymous Coward (OP)
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05/24/2011 12:57 AM
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Re: IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours
bump
Anonymous Coward
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05/24/2011 01:02 AM
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Re: IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours
At the four hour and 20 minute mark, the temperature of the bottom of the pressure vessel had risen to 1,642 degrees Celsius, close to the melting point for the stainless steel lining, probably damaging the pressure vessel. [...]

so 2 months later...how long before it eats through to water table and blows the fuck up?
 Quoting: .::HoLYWaR::.


That's what's happening right now.
Anonymous Coward
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05/24/2011 01:04 AM
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Re: IAEA informed in March that No. 1 reactor core started melting about 50 minutes after cooling stopped — Melted pile of fuel in 3.5 hours
The hydrogen explosions were the result of pumping water back into the vessel. They didn't realize the extent of the damage at the time.

corium + water = instant explosion





GLP