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Accession Number DE13-1104630
Title Continued Need for Modeling and Scaled Testing to Advance the Hanford Tank Waste Mission.
Publication Date Sep 2013
Media Count 8p
Personal Author D. R. Rector J. A. Fort L. M. Peurrung
Abstract Hanford tank wastes are chemically complex slurries of liquids and solids that can exhibit changes in rheological behavior during retrieval and processing. The Hanford Waste Treatment and Immobilization Plant (WTP) recently abandoned its planned approach to use computational fluid dynamics (CFD) supported by testing at less than full scale to verify the design of vessels that process these wastes within the plant. The commercial CFD tool selected was deemed too difficult to validate to the degree necessary for use in the design of a nuclear facility. Alternative, but somewhat immature, CFD tools are available that can simulate multiphase flow of non-Newtonian fluids. Yet both CFD and scaled testing can play an important role in advancing the Hanford tank waste mission in supporting the new verification approach, which is to conduct testing in actual plant vessels; in supporting waste feed delivery, where scaled testing is ongoing; as a fallback approach to design verification if the Full Scale Vessel Testing Program is deemed too costly and time-consuming; to troubleshoot problems during commissioning and operation of the plant; and to evaluate the effects of any proposed changes in operating conditions in the future to optimize plant performance.
Keywords Ccommissioning
Computational fluid dynamics
Hanford Reservation
Radioactive waste processing
Radioactive waste storage
Reactor vessels
Waste retrieval
Waste treatment

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 77G - Radioactive Wastes & Radioactivity
Corporate Author Pacific Northwest National Lab., Richland, WA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1411
Contract Number DE-AC05-76RL01830

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