5 results for month: 08/2009


Recent Two-Fluid Work at Rez

An excellent paper was posted to the thorium-forum recently on the work being done at the Nuclear Research Institute at Rez in the Czech Republic. The paper was written by Jan Frybort and Radim Vocka and was entitled:Neutronic Analysis of Two-Fluid Thorium Molten Salt ReactorRegular readers of this blog know that I am a big fan of the two-fluid fluoride reactor. What is the two-fluid reactor? It's the version of the fluoride reactor where the fuel salt (containing the fissile material, typically U-233) is kept separate from the blanket salt (containing the fertile material, typically thorium).The one-fluid reactor, on the other hand, has the ...

Why Should We Save the Uranium-233?

I have appealed many times on this blog to our public leaders to save the precious resource that is uranium-233. I have explained in an earlier blog post why the uranium-233, if used in a liquid-fluoride thorium reactor (LFTR) represents "unlimited" energy, because it can "catalyze" the consumption of abundant natural thorium and the inventory of U-233 remains even at the end of the reactor lifetime.But why save this particular 1000 kg of U-233? If we're going to start hundreds of LFTRs, there isn't enough U-233 to start all of them, and we'll have to use other sources of fissile material. So why worry about this batch of U-233?Reason #1: Destro...

Satire: We must abolish wind power

NPYP: We must abolish wind power because of World War I and II.Yes it is true; the use of wind power is a constant reminder and an insult to all the millions of people that suffered and died in the world wars. And the reason for this is steel.Steel was used to kill, maim and terrorize countless millions of people from 1914 to 1919 and 1939 to 1945. It was used in rifles, in tanks, in artillery shells and hand grenades. All of it culminating with the steel birds Enola Gay and Bockscar dropping atomic bombs on the cities of Hiroshima and Nagasaki. Steel and war are forever linked because you simply cannot wage war without steel.The connection between ...

Save the Uranium-233!

The Department of Energy has been engaged in a terrible effort to destroy--permanently--what might be the most precious substance on Earth: Uranium-233.Why is uranium-233 so precious? Because in a liquid-fluoride thorium reactor, U-233 represents essentially unlimited energy. How can that be so? Because in a LFTR, U-233 "catalyses" the consumption of thorium, which is natural and abundant. Every kilogram of U-233 represents roughly a megawatt of power in a LFTR--forever.This might sound like some kind of "perpetual motion" machine, but it's very much grounded in nuclear reality. U-233 is what thorium turns into when exposed to neutrons. U-233 ...

UTK/ORNL Proposal to ARPA-E

As I previously mentioned, I was involved in a proposal to the Advanced Research Projects Agency-Energy (ARPA-E) on an investigation in using liquid-halide reactors (both chloride and fluoride) along with salt-based reprocessing techniques to investigate how to address our issues surrounding spent nuclear fuel--often erroneously called "nuclear waste".In a nutshell, we proposed to fluorinate the uranium oxide spent fuel, turning the constituents of the fuel from oxides to fluorides.Uranium, comprising more than 95% of the fuel, would be removed by further fluorination to uranium hexafluoride (UF6). UF6 is the input material to uranium enrichment ...