I reckon this is what MG is working on at Lucas Heights somehow?
I believe there is a race on between Silex and GLE to see who finds the best answers, they have already sorted the Uranium Enrichment and that was some time ago now, that is not what is holding the laser enrichment process up, I believe it is this removal of 240Pu holding up the works, but if they get the answers they want then it will mean a great deal more work for laser enrichment, I hope the answers come from Silex, but even if GLE finds a way, if they are using the SWilex process as part of the enabling technology? then we will still get extra royalties I believe !
http://www.ans.org/pubs/journals/nt/a_36800
Implications of Plutonium Isotopic Separation on Closed Fuel Cycles and Repository Design
Charles Forsberg
Nuclear Technology / Volume 189 / Number 1 / January 2015 / Pages 63-70
Technical Paper / Fuel Cycle and Management / dx.doi.org/10.13182/NT13-137
Updatedecember 22, 2014
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Advances in laser enrichment may enable relatively low-cost plutonium isotopic separation creating a new unexplored dimension in fuel cycle options.
This may have large impacts on light water reactor (LWR) closed fuel cycles and waste management.
If 240Pu is removed before recycling plutonium as mixed-oxide (MOX) fuel, it would dramatically reduce the buildup of higher plutonium isotopes, americium, and curium.
Plutonium-240 is a fertile material and thus can be replaced by 238U.
Eliminating the higher plutonium isotopes in MOX fuel increases the Doppler feedback, simplifies reactor control, and allows infinite recycle of MOX plutonium in LWRs.
Reducing production of 241Pu by removal of 240Pu reduces production of 241Am—the primary heat generator in spent nuclear fuel after several decades.
Reducing heat-generating 241Am would reduce repository size, cost, and waste toxicity.
Avoiding 241Am avoids its decay product 237Np, a nuclide that partly controls long-term oxidizing repository performance.
The 240Pu could be added to the high-level waste for disposal.
Some of these benefits also apply to plutonium recycled into fast reactors.
However, the benefits are fewer because in a fast neutron spectrum, 240Pu is both a fissile material and a fertile material.
There would be incentives to separate 242Pu and dispose of it as a waste.
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