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[MSN]US licenses first nuclear reactors since 1978 - Page 17

post #161 of 223
2/12/12 at 4:25am
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The simple fact remains that Nuclear technology is the only power source that could sustain us as a race for as long as we'd ever need it. Nothing else can do that. Period. If the governments would stop spending 90 percent of all Nuclear research on military usage we wouldn't have the problems that we currently do now.
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post #162 of 223
2/12/12 at 4:38am
Quote:
Originally Posted by Clamtell View Post

Not sure how that is different than any fuel material with a keff less than 1. Also as far as I know thorium still has decay heat and produces less actinides than uranium fuel.
Based on current PWR in the USA there should not be any reactors that have positive reactivity coefficients. The plants are designed to automatically go subcritical at certain situations to prevent accidents. TMI was due to human operators overriding automatic systems. Fukushima experience meltdown due to decay heat power from the fuel (referencing paper "Analyses of core melt and re-melt in the Fukushima Daiichi nuclear reactors") . There hasn't really been an accident arising from design failure (except for Chernobyl) and not equipment or operator failure.
That explains how the reactor will not go on a meltdown from keff > 1 during operation but doesn't address the decay heat that can cause a meltdown. As far as I know I have not found any papers suggesting you can have a thorium fueled reactor without a decay heat removal system.

As far as I know there are passive decay heat removal systems in place already. Doesn't your statement below answer your statement above? It seems you already know about passive decay heat removal. Did I miss something?
Quote:
Originally Posted by Clamtell View Post

All of the commercial power plants or Gen IV/Gen III power reactors have active coolant. How would the reactor convert the heat generated to electricity if there is no coolant? If you're talking about passive decay heat removal, this feature is not unique thorium or liquid metal reactor designs. The AP1000 is designed to have "indefinite decay heat removal." Many of the inherent safety features arising from thorium fuel has been incorporated into the mechanical design of Gen III plants.
http://www.world-nuclear.org/info/inf08.html
AP1000 design control documentation section 7.4

Regardless I'm glad you jumped into this thread and helped spread your knowledge around thumb.gif We need more people talking about the hazards and benefits of nuclear. I wish more people would think for themselves by looking at the evidence instead of just jumping on the party bandwagon.
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post #163 of 223
2/12/12 at 5:31am
Quote:
Originally Posted by Maelthras View Post

Personally I think it's a step in the right direction, if the plans are updated to incorperate safety measures that are passive instead ogf active, and or failsafes that are uninteruptable. That way even with a loss of power that the reactor will not overheat and meltdown like what happened in japan. Also we could convert our current reactors to use thorium which is much safer to handle. Or even reporcessing to recycle and reuse nuclear fuels.

the sad part the reactors in question that had problems would've been phased out the same month..
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post #164 of 223
2/12/12 at 7:28am
I have no idea why Kentucky has no nuclear plants. It's coal mostly here. I know a lot of people have jobs in coal mines here, but the coal propaganda is getting insane. People driving around with "Friends of coal" licence plates everywhere, coal companies sponsoring public school sports, and even some of it at the University of Kentucky. mad.gif
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post #165 of 223
2/12/12 at 7:46am
About time,

People need to get over the paranoia surround nuclear power.

It is so much cleaner than current methods and much more efficient , the risks are tiny and nowhere near as bad as the media make out.
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post #166 of 223
2/12/12 at 5:39pm
Quote:
Originally Posted by trumpet-205 View Post

Anything that can go wrong, will go wrong.
Doesn't matter if it is a nuclear power plant, a dam or a natural gas power plant. They all can go wrong. So to say all it takes is one nuclear waste incident to cause problem is being naive. To say because it can go wrong we should avoid it is laughable. .

No what I'm saying is having a rocket full of nuclear waste explode and have it come raining down on us is pretty bad no matter how you cut it. With current techniques, if something bad happens its limited to a certain radius which that radius for the most part is predictable. If radioactive waste explodes say over an ocean, it would adversely affect the environment in a really bad way and there would be no way to clean it up. At least on land we can get to the stuff one way or another.
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post #167 of 223
2/12/12 at 6:02pm
Just put the reactors here in North Dakota. No need to worry about earthquakes. The largest earthquake recorded (and only one, I think) was a 5.5.

Also, we have very few people (most of which live within about 6 major cities). Easy to evac in an emergency.

But yes, we do need to find out what to do with the waste. Shame we couldn't harness the radioactivity and turn it into energy. Then waste would be solved and we would have more power to boot! [Nuclear plants simply cause a chain reaction in the fuel that boils off water. Current plants are really just complex steam engines, at least from my understanding. If somebody knows more about nuclear plants, please correct me.]
Edited by Blast - 2/12/12 at 6:05pm
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post #168 of 223
2/12/12 at 6:43pm
Except hydroelectricity, solar power, and wind power, current power plant involves using steam to rotate generator (in the case of nuclear power plant, decay heat boils up the water).
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post #169 of 223
2/13/12 at 3:37am
Put the waste in a volcano and have it melt, problem solved. Just cross your fingers it doesnt erupt.

& I think a nuclear-radiated volcanic eruption might (might) end poorly... So cross hard.
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post #170 of 223
2/13/12 at 4:25am
Quote:
clean power.

Are you kidding me? kookoo.gif
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