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Japan's Tsunami 2011 (pg. 27)
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| VDub |
If the containment "vaults" are damaged, then all discussion previous means nothing...
If they are breached, they are ed...
Crossing my fingers that it's not the case...
Did someone mention that they could encase the whole thing in concrete?? |
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| Skipper |
| quote: | Originally posted by exraver
Fukushima: Mark 1 Nuclear Reactor Design Caused GE Scientist To Quit In Protest
Thirty-five years ago, Dale G. Bridenbaugh and two of his colleagues at General Electric resigned from their jobs after becoming increasingly convinced that the nuclear reactor design they were reviewing -- the Mark 1 -- was so flawed it could lead to a devastating accident.
Questions persisted for decades about the ability of the Mark 1 to handle the immense pressures that would result if the reactor lost cooling power, and today that design is being put to the ultimate test in Japan. Five of the six reactors at the Fukushima Daiichi plant, which has been wracked since Friday's earthquake with explosions and radiation leaks, are Mark 1s.
"The problems we identified in 1975 were that, in doing the design of the containment, they did not take into account the dynamic loads that could be experienced with a loss of coolant," Bridenbaugh told ABC News in an interview. "The impact loads the containment would receive by this very rapid release of energy could tear the containment apart and create an uncontrolled release."
The situation on the ground at the Fukushima Daiichi plant is so fluid, and the details of what is unfolding are so murky, that it may be days or even weeks before anyone knows how the Mark 1 containment system performed in the face of a devastating combination of natural disasters.
But the ability of the containment to withstand the events that have cascaded from what nuclear experts call a "station blackout" -- where the loss of power has crippled the reactor's cooling system -- will be a crucial question as policy makers re-examine the safety issues that surround nuclear power, and specifically the continued use of what is now one of the oldest types of nuclear reactors still operating.
GE told ABC News the reactors have "a proven track record of performing reliably and safely for more than 40 years" and "performed as designed," even after the shock of a 9.0 earthquake.
Still, concerns about the Mark 1 design have resurfaced occasionally in the years since Bridenbaugh came forward. In 1986, for instance, Harold Denton, then the director of NRC's Office of Nuclear Reactor Regulation, spoke critically about the design during an industry conference.
"I don't have the same warm feeling about GE containment that I do about the larger dry containments,'' he said, according to a report at the time that was referenced Tuesday in The Washington Post.
"There is a wide spectrum of ability to cope with severe accidents at GE plants,'' Denton said. "And I urge you to think seriously about the ability to cope with such an event if it occurred at your plant.''
http://abcnews.go.com/Blotter/fukus...ory?id=13141287 |
Interesting, in the globe this morning the article adds that the issues this particular engineer quit over were later resolved at great expense. |
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| love_child |
Some facts: Reactor #3, which exploded yesterday, is a MOX reactor that uses uranium and plutonium rods. Uranium is bad enough, but it's nothing compared to plutonium. Plutonium is unimaginably poisonous and bioactive; a single particle can kill, and even a trace amount can cause cancer. Due to the design of Reactor #3, spent fuel rods are stored atop the reactor but outside the containment vessel.
From the video showing the explosion of #3, it appears as though pieces of the reactor itself were blown several thousand feet into the air. There is no confirmation of this (additional news out of Japan is becoming sketchier by the hour) but even if the reactor survived the blast, there is the likelihood that tens of thousands of spent fuel rods did not. Additionally, the explosion started a fire in Reactor #4 and cracked its outer containment vessel. |
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| VDub |
| quote: | Originally posted by rulzz
zerohedge :
All workers have been withdrawn. Reactors are now on autopilot - Edano |
They were only gone an hour... |
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| VDub |
| quote: | Originally posted by love_child
Some facts: Reactor #3, which exploded yesterday, is a MOX reactor that uses uranium and plutonium rods. Uranium is bad enough, but it's nothing compared to plutonium. Plutonium is unimaginably poisonous and bioactive; a single particle can kill, and even a trace amount can cause cancer. Due to the design of Reactor #3, spent fuel rods are stored atop the reactor but outside the containment vessel.
From the video showing the explosion of #3, it appears as though pieces of the reactor itself were blown several thousand feet into the air. There is no confirmation of this (additional news out of Japan is becoming sketchier by the hour) but even if the reactor survived the blast, there is the likelihood that tens of thousands of spent fuel rods did not. Additionally, the explosion started a fire in Reactor #4 and cracked its outer containment vessel. |
Do you not see that this type of thing is what causes panic??
How can you say that reactor 3 exploded when in fact it did not??
Read before you post!!! |
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| 1dawoman |
Great link! It basically summarizes why I can't stand CNN and never watch it... |
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| jchung52 |
Alexandra Wallace racist ucla student bikini photos
Meet Alexandra Wallace. She attends UCLA and has a beef with Asians. Instead of keeping it to herself or going to a therapist to work out her issues she used her college education to post a rant video on YouTube. Word on the street is Asian gangs now have a hit out on her. Oh boy. We all say things that we regret, but this could haunt her for the rest of her life. Turns out Allie’s also a bikini model. Since her ModelMayhem, Facebook, Twitter, and every other page affiliated with her has been pulled down, we managed to scoop up a library’s worth of her modeling photos. How should UCLA handle this? Can YOU handle this? |
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| VDub |
| quote: | Originally posted by jchung52
Alexandra Wallace racist ucla student bikini photos
Meet Alexandra Wallace. She attends UCLA and has a beef with Asians. Instead of keeping it to herself or going to a therapist to work out her issues she used her college education to post a rant video on YouTube. Word on the street is Asian gangs now have a hit out on her. Oh boy. We all say things that we regret, but this could haunt her for the rest of her life. Turns out Allie’s also a bikini model. Since her ModelMayhem, Facebook, Twitter, and every other page affiliated with her has been pulled down, we managed to scoop up a library’s worth of her modeling photos. How should UCLA handle this? Can YOU handle this? |
I'd do errrr....
So would you Justin...
Don't lie... |
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