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Nuclear the 'only viable clean power' (Read 20579 times)
Jim Profit
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Re: Nuclear the 'only viable clean power'
Reply #90 - Feb 27th, 2009 at 8:23pm
 
...
Why not use the waste as a weapon?

Build like.. big tanks and when you go to war, hose down your enemy with the toxic residue. I'm not sure how effective this is, but surely it won't let uranium urine go to waste!
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But I still believe there's something left for you and me.
 
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muso
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Re: Nuclear the 'only viable clean power'
Reply #91 - Feb 27th, 2009 at 10:01pm
 
Jim - the mighty US 'Iraqi liberation force' (AKA burn muther f___r burn)  already thought of that. They made sure it was added to depleted Uranium shells. It's not a very effective weapon, because it kills over many years as the kids play in the yellow powder-like ash that blows around after an armour piercing round has done its job.
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1523 people like this. The remaining 7,134,765,234 do not 
 
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mozzaok
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Re: Nuclear the 'only viable clean power'
Reply #92 - Feb 28th, 2009 at 8:06am
 
Quote:
Where do you get the leaky old 44 gallon drums from


I get that from what we actually see the US doing with their waste, muso, and god knows what the russians do.

Of course it is not the high level waste left in huge stacks to leak, but even the low level waste has to be disposed of with at least some care.

This page link;

http://www.sea-us.org.au/wastenot.html

gives a pretty fair summary of my ideas on the subject, and while I do not fully agree with their somewhat dismissive attitude to the synrock process, neither do I accept it as the solution.
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OOPS!!! My Karma, ran over your Dogma!
 
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mantra
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Re: Nuclear the 'only viable clean power'
Reply #93 - Feb 28th, 2009 at 11:36am
 
mozzaok wrote on Feb 25th, 2009 at 12:33pm:
Mantra, although the point you make about the economic viability of Nuclear power, was correct, previously, most are factoring in massive rises in energy costs, which would make it economically viable, in the near future.

Therefore, that argument starts to look weaker, however, the de-commissioning costs, and especially the waste management costs, are very much open ended expenses, that no-one can accurately assess, because we have too many unknowns involved, to even make a vaguely definitive costing model.

If they can sort out the waste issue, then it really may be a viable option for future power generation.


Mozzaok - Forget about NP being unsafe and often unreliable then.  We haven't got an infinite supply of uranium, in fact some researchers have estimated that we have perhaps a 100 years at most left.

As uranium becomes more scarce over the next century how will this reduce the cost of NP and you've also got to take into account overall  the unsafe history of reactors?  We're talking about propping up an industry that possibly only has a century left to survive, no safe storage or "green" reactors and a toxic legacy to leave to our survivors for the next half million years.

All these grand plans for storage and green reactors are still only ideas spruiked by the lobbyists as they hold their hand out for more and more cash to "develop" their grand plans which by the time they come to fruition - uranium will be as expensive as gold.  
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Calanen
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Re: Nuclear the 'only viable clean power'
Reply #94 - Feb 28th, 2009 at 12:26pm
 
How long will the world's uranium supplies last?
Steve Fetter, dean of the University of Maryland's School of Public Policy, supplies an answer

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YELLOWCAKE: There should be enough uranium to fuel the world's current fleet for more than 200 years.
Courtesy of Cameco Corporation
MORE TO EXPLORE
Overview
The Future of Nuclear Power

How long will global uranium deposits fuel the world's nuclear reactors at present consumption rates?

Steve Fetter, dean of the University of Maryland's School of Public Policy, supplies an answer:

If the Nuclear Energy Agency (NEA) has accurately estimated the planet's economically accessible uranium resources, reactors could run more than 200 years at current rates of consumption.

Most of the 2.8 trillion kilowatt-hours of electricity generated worldwide from nuclear power every year is produced in light-water reactors (LWRs) using low-enriched uranium (LEU) fuel. About 10 metric tons of natural uranium go into producing a metric ton of LEU, which can then be used to generate about 400 million kilowatt-hours of electricity, so present-day reactors require about 70,000 metric tons of natural uranium a year.

According to the NEA, identified uranium resources total 5.5 million metric tons, and an additional 10.5 million metric tons remain undiscovered—a roughly 230-year supply at today's consumption rate in total. Further exploration and improvements in extraction technology are likely to at least double this estimate over time.

Using more enrichment work could reduce the uranium needs of LWRs by as much as 30 percent per metric ton of LEU. And separating plutonium and uranium from spent LEU and using them to make fresh fuel could reduce requirements by another 30 percent. Taking both steps would cut the uranium requirements of an LWR in half.

Two technologies could greatly extend the uranium supply itself. Neither is economical now, but both could be in the future if the price of uranium increases substantially. First, the extraction of uranium from seawater would make available 4.5 billion metric tons of uranium—a 60,000-year supply at present rates. Second, fuel-recycling fast-breeder reactors, which generate more fuel than they consume, would use less than 1 percent of the uranium needed for current LWRs. Breeder reactors could match today's nuclear output for 30,000 years using only the NEA-estimated supplies.

Editor's Note: This question was submitted by G. Peck of Seward, Alaska and will be printed in the March 2009 issue of Scientific American.

http://www.sciam.com/article.cfm?id=how-long-will-global-uranium-deposits-last
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ISLAM is a vicious [un-reformable] political tyranny, which has always murdered its critics, and it continues that practice even today.
Yadda
 
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Calanen
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Re: Nuclear the 'only viable clean power'
Reply #95 - Feb 28th, 2009 at 12:29pm
 
I should note also that Thorium can be used instead of Uranium to fuel reactors. And there is about 4-5 times the Thorium on the planet compared to Uranium.

So I think we are good for the next 1000 years or so. Not even accounting for developments in tech which mean that we use less fissile material to power reactors, or develop something better.
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ISLAM is a vicious [un-reformable] political tyranny, which has always murdered its critics, and it continues that practice even today.
Yadda
 
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