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Title: Recommended Updates to Solubility Controls for Modeling Leaching of Technetium, Uranium, Neptunium, Plutonium, and Iodine from the Residual Waste Layer of Closed Savannah River Site High Level Waste Tanks

Technical Report ·
DOI:https://doi.org/10.2172/1860325· OSTI ID:1860325
 [1]
  1. Savannah River Site (SRS), Aiken, SC (United States)

The objective of this report is to relate waste leaching experiments by the Savannah River National Laboratory (SRNL) to performance assessment modeling of release of several radionuclides from residual waste in closed high-level waste tanks. SRNL leached residual waste from Tanks 18F and 12H with solutions simulating the modeled evolution of pore fluids in residual waste layers of closed tanks through various stages of grout degradation. Tc-99, uranium isotopes, Np-237, plutonium isotopes, and I-129 were analyzed in the leachate multiple times over 90 days.

Research Organization:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Organization:
USDOE Office of Environmental Management (EM)
Contributing Organization:
Inspection Experts, Inc.; Panoramic Environmental Consulting, LLC
DOE Contract Number:
89303321CEM000080; 2024
OSTI ID:
1860325
Report Number(s):
IEI-2024-002; TRN: US2302929
Country of Publication:
United States
Language:
English