Aluminum-Containing Phases in Tank Waste: Precipitation and Deposition of Aluminum-Containing Phases

Mattigod, Shas ; Hobbs, D.T. ; Wellman, D. M. ; Aksay, I. ; Dabbs, D. M.

Pacific Northwest National Laboratory (U.S.)

关键词: Evaporators;    Criticality;    Uranium;    12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;    38 Radiation Chemistry, Radiochemistry, And Nuclear Chemistry;   

DOI  :  10.2172/896465
RP-ID  :  ERSD-195016-2006
RP-ID  :  FG02-05ER64006
RP-ID  :  896465

美国|英语

来源: UNT Digital Library

【 摘 要 】

Aluminosilicate deposit buildup experienced during the tank waste volume-reduction process at the Savannah River Site (SRS) required an evaporator to be shut down in October 1999. Recent investigations illustrated the accumulation 7 wt% uranium, 3% was 235U and absent of neutron poisons, within these deposits and presented a criticality concern. The Waste Processing Technology Section of Westinghouse Savannah River Company at SRS is now collaborating with a team from Pacific Northwest National Laboratory in efforts to identify the phases controlling uranium solubility and understand the conditions under which they precipitate.