[ RadSafe ] Reprocessing
JAitken at slb.com
Tue May 29 10:33:02 CDT 2012
One of your fission fragments, Cs137, would be very welcome as a GR source for many applications, not the least being Well logging. Currently, all Cs137 is coming from Russia, with costs about 5-10 times what it used to.....
Likewise Am241, besides its use in smoke detectors, when mixed with Be is a primary source of Neutrons for well logging. And again, the only currently commercially available source is Russia, with the same inflation in costs.
But the good news is that the "smart" logging companies are getting away from the use of these isotopic sources in favor of miniature accelerators (oops: where is the source of tritium.... <G>)
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of JPreisig at aol.com
Sent: Monday, May 28, 2012 11:11 PM
To: radsafe at health.phys.iit.edu
Subject: [ RadSafe ] Reprocessing
This is from: _jpreisig at aol.com_ (mailto:jpreisig at aol.com) .
Reprocessing HLW (High Level Waste) is a technical as well as a political decision.
With the $$$ available in the Yucca Mountain and/or Nuclear Savings Funds, one might be
able to set up one test reprocessing facility in the USA. Other regional reprocessing
facilities could be built eventually. Guess these centers could be
built in areas/states which
would welcome them.
One argument against reprocessing is nuclear proliferation.
The products of reprocessing
are fission fragments, U235, U238, Pu, Long lived radionuclides and so on. See the Fission/
Reactor Book by Nero and Nuclear Physics books by Kaplan, Segre etc.
I guess French and/or US companies could be sought to run such a facility.
Pu from reprocessing could be sent directly to the US government. Or perhaps it could
be mixed with U238 (at a 5% Pu enrichment level) and used in an eventual Pu reactor.
Would this fuel mixing scenario be viable??? --- the question is directed at nuclear engineers
and/or Health Physicists working at US and/or other reactors.
U238 could be used in reactor fuel for re-use.
Fission fragments (Sr-90, Cs-137, etc.) could be sent to Yucca Mountain (perhaps WIPP??)
for 300 year decay (10 half-lives). Long-lived radionuclides could be put in Yucca mountain,
or perhaps somewhere else.
Reprocessing separates off the various fuel components, allowing the volume for long-lived
storage (disposal???) to be less than the original spent fuel volume.
The USA doesn't have to reprocess HLW, but maybe it should develop expertise in this
area. What actually will happen --- your guess is as good as mine. After 50+ years,
we're still waiting on Fusion to come through. Ho Hum.
Be Good... Regards, Joseph R. (Joe) Preisig, PhD
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