Energy From Thorium Discussion Forum

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PostPosted: Oct 02, 2016 8:54 pm 
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If Flibe Energy decides to segregate the fission products from the end of the fuel reprocessing stream to extract various stable metals, what amount of Pu (or other minor actinide) would be allowed by law in the metal?

My point is, that if no process can get the tiny remaining amount out, is there a problem with selling the metal?

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PostPosted: Oct 02, 2016 10:37 pm 
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Low activity sources are handled in industry all the time, so there seems to be little inherent issue in materials such as platinum and palladium extracted from fission products being used for industrial catalysis - although it seems highly likely that it would trade at significantly lower prices to regular material as it would be no use at all in jewelry and such.

My current favourite is to use fission products in the construction of new reactors.
If fission strontium was seperated from the waste and held seperately it would slowly produce [as fission strontium is almost entirely stable or 90Sr] effectively pure 90Zr which has numerous uses in nuclear reactors. It can significantly reduce the already low uranium consumption of a CANDU, for example, by substituting natural zirconium in the pressure tubes.


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PostPosted: Oct 03, 2016 10:49 pm 
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Here is an excerpt from "Evolution of Clearance Standards...," by Guebaly (2005):
"In June 2000, the steel industry voiced its opposition to unconditional clearance stating that it will not accept radioactively contaminated scrap metals and will continue to monitor and reject materials that violate the industry 'zero tolerance' policy."


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PostPosted: Oct 04, 2016 7:31 am 
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A related question is:
How much Plutonium can we have mixed in with fission products, and still call it fission products - rather than long lived waste.

Plutonium and other transuranics need to be recycled or destroyed in a fast reactor. Fission products can be buried for a few centuries.


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PostPosted: Oct 10, 2016 8:00 am 
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KitemanSA, I think your question is very important on the viability of energy from thorium (i.e. LFTR). Fission product output of LFTRs is beyond recovery for any uses whatsoever and it would all have to be buried?

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