Corrosion of Spent Nuclear Fuel: The Long-Term Assessment

Ewing, Rodney C.

University of Michigan

关键词: Corrosion;    Radioactivity;    Source Terms;    Uranium;    Actinides;   

DOI  :  10.2172/833467
RP-ID  :  DOE/ER/14816
RP-ID  :  FG07-97ER14816
RP-ID  :  833467

美国|英语

来源: UNT Digital Library

【 摘 要 】

Spent nuclear fuel, essentially U{sub 2}, accounts for over 95% of the total radioactivity of all of the radioactive wastes in the United States that require disposal, disposition or remediation. The UO{sub 2} in SNF is not stable under oxiding conditions and may also be altered under reducing conditions. The alteration of SNF results in the formation of new uranium phases that can cause the release or retardation of actinide and fission product radionuclides. Over the long term, and depending on the extent to which the secondary uranium phases incorporate fission products and actinides, these alteration phases become the near-field source term.