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RADSAFErs,
I discussed the question of plutonium
traces in depleted uranium with a collegue. He seriously doubts that uranium,
which was used for plutonium production is enriched with DU as a byproduct. (You
remember that the Swiss laboratory in Spiez found traces of U-236 in depleted
uranium from Kosovo and said that this is a hint, that the uranium had been
through a nuclear reactor and that there
m i g h t be even lower
traces of Pu-239 in the material, but they had not found any.) He says that
plutonium fluoride is not stable and therefore it could not be carried through
the process of enrichment together with uraniumhexafluoride. But then the
question arises, where the U-236 comes from. Isn't it so that natural uranium is
used for plutonium production? Is there any information available or is
everything still secret? The web-site of the DOE on recycled uranium, which one
of you recently distributed is "under
reconstruction".........
Franz
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