Status and integration of studies of gas generation in Hanford wastes

Technical Report · Tue Oct 01 04:00:00 UTC 1996

DOI:https://doi.org/10.2172/416959· OSTI ID:416959

Pederson, L R; Bryan, S A

The purpose of this report is to review recent progress in determining the mechanism, kinetics, and stoichiometry of gas generation in Hanford waste tanks. Information has been gathered from the results of (1) laboratory studies with simulated wastes; (2) laboratory studies with actual waste core samples (Tanks SY-101 and SY-103); (3) studies of thermal and radiolytic reactions in the gas phase; (4) gas solubility evaluations; and (5) in-tank gas composition data. The results of laboratory studies using simulated wastes, which were aimed at determining chemical mechanisms responsible for gas generation, are summarized in Section 2. Emphasized are findings from work performed at the Georgia Institute of Technology (GIT), which was conducted under subcontract to Pacific Northwest National Laboratory (PNNL) and completed in FY 1996. Thermally activated pathways for the decomposition of hydroxyethylethylene-diaminetriacetic acid (HEDTA, trisodium salt) in simulated wastes were established by this work, among other accomplishments.

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 416959
• Report Number(s): PNNL--11297; ON: DE97050704
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
HANFORD RESERVATION
MONITORING
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
SAMPLING
STOICHIOMETRY
TANKS
UNDERGROUND STORAGE
VAPORS