Advanced waste forms from spent nuclear fuel | Zendy

J.P. Ackerman | Zendy; C.C. McPheeters | Zendy

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Advanced waste forms from spent nuclear fuel

Author(s) -

J.P. Ackerman,

C.C. McPheeters

Publication year - 1995

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/184258

Subject(s) - spent nuclear fuel , electrowinning , high level waste , radioactive waste , waste management , fission products , tonne , actinide , molten salt , metallurgy , materials science , environmental science , radiochemistry , chemistry , nuclear chemistry , engineering , electrolyte , electrode

More than one hundred spent nuclear fuel types, having an aggregate mass of more than 5000 metric tons (2700 metric tons of heavy metal), are stored by the United States Department of Energy. This paper proposes a method for converting this wide variety of fuel types into two waste forms for geologic disposal. The method is based on a molten salt electrorefining technique that was developed for conditioning the sodium-bonded, metallic fuel from the Experimental Breeder Reactor-II (EBR-II) for geologic disposal. The electrorefining method produces two stable, optionally actinide-free, high-level waste forms: an alloy formed from stainless steel, zirconium, and noble metal fission products, and a ceramic waste form containing the reactive metal fission products. Electrorefining and its accompanying head-end process are briefly described, and methods for isolating fission products and fabricating waste forms are discussed

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