Retention of neptunium in uranyl alteration phases formed during spent fuel corrosion

Conference · Mon Sep 01 00:00:00 EDT 1997

OSTI ID:651866

Buck, E C; Finch, R J; Finn, P A; Bates, J K

Uranyl oxide hydrate phases are known to form during contact of oxide spent nuclear fuel with water under oxidizing conditions; however, less is known about the fate of fission and neutron capture products during this alteration. We describe, for the first time, evidence that neptunium can become incorporated into the uranyl secondary phase, dehydrated schoepite (UO{sub 3}.8H{sub 2}O). Based on the long term durability of natural schoepite, the retention of neptunium in this alteration phase may be significant during spent fuel corrosion in an unsaturated geologic repository.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 651866
• Report Number(s): UCRL-JC-128499; CONF-970902-; ON: DE98054677; TRN: 98:009864
• Resource Relation: Conference: 21. symposium on the scientific basis for nuclear waste management, Davos (Switzerland), 28 Sep - 3 Oct 1997; Other Information: PBD: 1 Sep 1997
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
URANYL COMPOUNDS
NEPTUNIUM
SPENT FUELS
SCHOEPITE
RADIOACTIVE WASTE DISPOSAL
GROUND WATER
CORROSION