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- Newsgroups: sci.space
- Path: sparky!uunet!stanford.edu!CSD-NewsHost.Stanford.EDU!times.stanford.edu!zowie
- From: zowie@daedalus.stanford.edu (Craig "Powderkeg" DeForest)
- Subject: Re: Breeders
- In-Reply-To: pgf@srl01.cacs.usl.edu's message of Tue, 22 Dec 1992 02:46:14 GMT
- Message-ID: <ZOWIE.92Dec22141804@daedalus.stanford.edu>
- Followup-To: sci.physics
- Sender: news@CSD-NewsHost.Stanford.EDU
- Organization: Stanford Center for Space Science and Astrophysics
- References: <Bzn3tH.2A0.1@cs.cmu.edu>
- Distribution: sci
- Date: 22 Dec 92 14:18:04
- Lines: 46
-
- In article <foo> pgf@srl01.cacs.usl.edu ("Phil G. Fraering") writes:
- \Session's Answer was too flipant. The reason the U.S. doesn't hav mre
- /ooops have more breeder reactors is that the anti-nuke forces won a battle
- \in the late seventies and President Jimmy Carter stopped the development
- /of them. The arguements given revolved around the proliferation of
- \Plutonium that the reactors "breed" and not on the safety of the
- /reactors. The nuke power industry was trying to sell them as the answer
- \to lmited supplies of nuclear fuel (o.k. expensive supplies) because they
- /produce 5 lbs of fuel for every 4 they consume. Unfortunately, the
- \plutonium is also a great nuke weapon resource.
-
- From what I've heard, it's the wrong isotope or mixed with such as
- to be useless in constructing a nuclear bomb.
-
- What the Carter Administration stopped was reprocessing plants. In
- order for breeder reactors to breed, you've gotta separate out the new
- fuel from the miscellaneous fission products (some of which are highly
- radioactive) that accumulate in the fuel.
-
- In fact, if you have a reprocessing plant, you win big regardless of
- whether you're running a breeder, because the limiting factor in fuel
- rod use is buildup of neutron-absorbing fission products, *not* loss
- of the fuel isotope. I haven't got my books handy, but I think it's
- around a factor-of-ten or more. (ie <10% of the fuel is used up, when
- the rod can no longer be used.)
-
- In fact, one of the issues surrounding the reprocessing plant thaang
- was the development of a viable nuclear bomb design by a Princeton
- undergraduate student. (whose name I forget. John Archibald?) He did
- it to prove that a sufficiently motivated terrorist could build one,
- if only he could get his hands on some plutonium. He was contacted by
- intelligence agents from Iraq! (This was back before they were our
- friends, before they were our enemies. They had, of course, just
- bought their `peaceful' nuclear reactor from the French.) The Carter
- Administration blocked the development of a reprocessing plant,
- largely (they said -- I'm sure general anti-nukular paranoia helped)
- because it would entail shipping large amounts of reprocessed fuel
- (including plutonium) around, and there was danger of hijacking.
-
- Note that it's relatively easy here in the U.S. to get slightly
- enriched Uranium (<20% U-235), but it's very hard to get anything
- more pure. In Canada, they don't enrich their uranium at all for
- the CANDU reactors -- by using heavy water as a moderator, they
- improve the fission efficiency to where natural uranium is sufficient.
- --
- DON'T DRINK SOAP! DILUTE DILUTE! OK!
-