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omg.... fairewinds update on fukushima

 
Anonymous Coward
User ID: 7083867
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02/19/2012 10:11 PM
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omg.... fairewinds update on fukushima
Very scary and interesting analysis in this video of why there was a hydrogen explosion.....

[link to fairewinds.com]
Anonymous Coward
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02/19/2012 10:15 PM
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Re: omg.... fairewinds update on fukushima
Very scary and interesting analysis in this video of why there was a hydrogen explosion.....

[link to fairewinds.com]
 Quoting: Anonymous Coward 7083867


Can you elaborate a little? Not able to watch the video at the moment.
Anonymous Coward (OP)
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02/19/2012 10:19 PM
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Re: omg.... fairewinds update on fukushima
Pressure build up in the reactor vessel forced the bolts holding the to on the thing to stretch, allowing gas to escape.... This is one big piece of steel on top of the reactor.....
Anonymous Coward
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02/19/2012 10:31 PM
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Re: omg.... fairewinds update on fukushima
Just catching up with the news? getting old allready this one. I saw it a little while ago, and yeah its amazing that they knew this would happen all along, but as he said just "pretended" that the test didnt happen.

Of course it only matters "if" the pressure gets to around 100 pounds per square inch. Which "should" only happen when the core melts down.

It doesnt really change the outcome really. Hydrogen explosion or not, if your expensive little core has melted down, it doesnt matter if your "venting" steam or if the pressure pushes the lid off. By that time all hell has broken loose anyway.

We are now getting "late in the day" for our nuclear reactors. Or maybe "long in the tooth" would be better, whatever, here we are some forty even fifty years later, and instead of "decomissioning" these things, they "simply" "re-licence" them. Just stamp a new date on the peice of paper, and your good to go!!

(dont worry about metal fatigue, dont worry about leaks and demographical cancer statistics)

Just stamp a new date! if you want to "seem" to be "pro-active" you can install some hideously expensive non-functioning "vents" for no reason at all but cause you can say at the next convention, "oh we got some vents put in"

And smile smugly at all the jealousy you recieve from everyone whos company hasnt made enough money yet to do so. They are the ones with the shit seats, and cheap suits and bad rooms at the convention.

Its crazy isnt it.

I would love to go live in a cave but how could I watch the simpsons then? maybe I could draw them with a rock on the walls, and then in about a million years time people would look at them and laugh, and say, "well no wonder they went extinct!!"

Nuclear fucking reactors? that they know dont pay for themselves, are hideously dangerous, and are not actually needed as a source of energy, and really just boil water.
And they want to build more?
its like world war one, oh and two, and all the rest, we didnt really need them, if we wanted to kill everyone we just got to wait for the meltdowns, simple really.


2012 anybody.............................
GreyMatter

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02/19/2012 11:14 PM
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Re: omg.... fairewinds update on fukushima
Only 100 psi and this stretches all those huge steel bolts??
I find that hard to imagine. 100 psi is not much pressure at all. Very easy to contain and control. They must of used rubber bolts to screw that shit together. Or all the shit was made in Korea like the Deep Water Horizon oil rig.

bsflag
telling it straight

User ID: 1461054
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02/19/2012 11:17 PM

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Re: omg.... fairewinds update on fukushima
OP, This is for you...

Thread: A WARNING: For those who use OMG when they text or talk.
Nickadeemus

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02/19/2012 11:26 PM
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Re: omg.... fairewinds update on fukushima
Arnie is the man!

Nick®
supchuck
Pure Life; Get it on...
Anonymous Coward (OP)
User ID: 7083867
United States
02/20/2012 08:43 AM
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Re: omg.... fairewinds update on fukushima
 Quoting: telling it straight


Oh My Gosh.....

Look - I respect your POV, but get a life, please. Don't you think the context is important here? Are are you one of those extremists who reads blasphemy in the everyday things around them?

No "taking the name in vain" done or implied.

Have a nice, peaceful day.
Anonymous Coward (OP)
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02/20/2012 08:31 PM
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Re: omg.... fairewinds update on fukushima
Only 100 psi and this stretches all those huge steel bolts??
I find that hard to imagine. 100 psi is not much pressure at all. Very easy to contain and control. They must of used rubber bolts to screw that shit together. Or all the shit was made in Korea like the Deep Water Horizon oil rig.

bsflag
 Quoting: GreyMatter


That was my initial thought as well, but Gundersen claims that this actually happened some time ago in a simple pressure test in the same type of reactor, and that's what happened.

Seems unbelievable that could happen - yet..... it did at least once! And perhaps here as well.
GreyMatter

User ID: 9752029
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02/20/2012 09:02 PM
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Re: omg.... fairewinds update on fukushima
Only 100 psi and this stretches all those huge steel bolts??
I find that hard to imagine. 100 psi is not much pressure at all. Very easy to contain and control. They must of used rubber bolts to screw that shit together. Or all the shit was made in Korea like the Deep Water Horizon oil rig.

bsflag
 Quoting: GreyMatter


That was my initial thought as well, but Gundersen claims that this actually happened some time ago in a simple pressure test in the same type of reactor, and that's what happened.

Seems unbelievable that could happen - yet..... it did at least once! And perhaps here as well.
 Quoting: Anonymous Coward 7083867

Yeah OP, I respect Gundersons analysis of the situation. For the life of me I cannot understand or even begin to comprehend how reactors with this major flaw or oversight could even be brought into service at all.
They should shut all of them down immediately, but we know that would never happen.
Anonymous Coward
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02/20/2012 09:03 PM
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Re: omg.... fairewinds update on fukushima
Fairewinds = leftist green tard enviro fundie lies bsflag
Brainsdonthurtabit

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02/20/2012 09:08 PM
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Re: omg.... fairewinds update on fukushima
Fairewinds = leftist green tard enviro fundie lies bsflag
 Quoting: Anonymous Coward 10555199


Oh Bullshit you Aussie prison sperm offspring. See how generalizations piss you off.
Romney has a Swiss bank account and you have a double-wide. The American Dream! Vote for You Dummy!
Anonymous Coward
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02/20/2012 10:58 PM
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Re: omg.... fairewinds update on fukushima
from Mar 2011~

[link to www.nytimes.com]

[snip]

David Lochbaum, chief nuclear safety official of the Union of Concerned Scientists, has another possible explanation. As steam and hydrogen built up within the primary containment shell, high pressure may have forced an opening between the primary containment shell, called the drywell, and the metal cap that is bolted onto the shell. A pressure test decades ago at the Brunswick Nuclear Plant in North Carolina demonstrated that such a high-pressure leak could occur in Mark I reactors built at the Fukushima plant, Lochbaum said.

"This tragedy will be closely examined for its causes, what happened and why," Lochbaum said. "That scrutiny must determine how hydrogen got into the reactor buildings to cause the catastrophic explosions. The drywell head pathway may be that answer. We need to stress that we're not putting this forward as the only answer for this question, but it's the most plausible explanation that we've heard to date."

and

[link to www.simplyinfo.org]

[snip]

Mark 1 containments were not specifically designed to handle these situations:
Reactor Vessel Rupture
Steam Generator Rupture
Large break (LOCA) Loss Of Coolant Accidents

These kinds of accidents produce higher containment pressure and more fission products. High heat caused by these kinds of accidents can also lead to failing containment by way of cracks or ruptures.

Statistics for Peach Bottom are likely similar to units at Fukushima as they have similar designs.
Peach Bottom BWR Mark 1 Peak Design Basis Accident Pressure PSIG 49.1 (KPA 339)
Peach bottom design: 56psig, ultimate failure pressure 148 psig

Containment Cap:

The yellow containment cap bolt style used at Peach Bottom nuclear plant is the style used at Fukushima and is prone to bolt elongation (stretching) and flange separation (opening) under high temperatures. Accidents where high containment (drywell) temperatures occur are more likely to have the containment cap bolts stretch.

The silicon seal of the containment cap can also fail, it degrades significantly at temperatures over about 600 K (620 ‘F). These two flaws can create an outlet for containment in situations where the pressure and temperatures are both high.

**This is certainly a potential scenario as part of the unit 3 explosion. Considerable steam and debris was ejected high in the air but the containment cap or parts of it have not been found in the debris.




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