Electrometallurgical Techniques for DOE Spent Fuel Treatment Status Report on Argonne National Laboratory's R & D Activity as of Fall 1998 (1999) / Chapter Skim
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D Committee Meeting at Argonne National Laboratory-West, June 25-26, 1998
D Committee Meeting at Argonne National Laboratory-West, June 25-26, 1998
Pages 61-70
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From page 61... ...
Lunch :00 Tours -- - Fuel Conditioning Facility -- - Ceramic Waste Process 2:00 Irradiated Metal Waste 2:30 Metal Waste Qualification Testing 3:00 Electrorefiner Development Testing 3:30 Irradiated Fuel Electrorefining Expenence 4:00 Electrorefining Model Development 4:30 p.m. Open Discussions Y
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From page 62... ...
The EBR-H spent fuel treatment flow sheet was reviewed, demonstrating the separation of uranium, and the ceramic and metal waste forms individually. Following a review of upcoming demonstration project milestones, a response to the comm~ttee's spring 1997 report)
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From page 63... ...
The waste qualification strategy is summarized in a draft Waste Form Qualification Plan. The existing document hierarchy will be used to qualify the metal and ceramic waste forms as additional standard high-level waste forms.
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From page 64... ...
Pyroprocess flow sheets were then used to partition the inventory between the ceramic and waste metal waste forms. These provide source team information for thermal analyses and repository performance assessment.
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From page 65... ...
Future work will include the continued development of degradation modeling and radionuclide release modeling for both waste forms. Also, ANE will develop experience with the TSPA-VA base case and work with the YMP and Golder to perform sensitivity studies focused on EMT waste performance.
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From page 66... ...
Advanced characterization provides detailed structural information on several phases, including lattice parameters. For the stainless steed 15 wt To zirconium metal waste form, the development phase is essentially complete.
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From page 67... ...
The purpose of the metal waste form test matrix is to provide samples that bracket the target alloy composition with realistic variations in constituents and to subject those variations to test methods or techniques that will provide a performance gauge for the sensitivity of the waste form to these variations. This information will allow for the design of a robust metal waste form process.
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From page 68... ...
Operating conditions for the run r , 1 ~ TITHE ~ or tne lil~K-l were a 500 C operating temperature, 40-rpm rotation speed for the anode Eve, a cutoff voltage of 0.45 V, no stripping, improved cathode scrapers, and 0.05 A/cm2 current density. Alternative methods to control the dense uranium deposit on the cathode tube include stripping, dissolution, and replacement of the cathode scraper with a uranium cutter.
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From page 69... ...
The Oracle database for electrorefining requires trend analyses for deposit morphology, zirconium transport, and current density effects on ACM operation. Future work will include development of a drawdown model, extension of an anodic dissolution model to include U-NM intermetallics, dissolution of blanket fuel, multi-node representation of anode baskets, application of GPEC to ACM geometry, and anode and cathode mass transfer coefficients for ACM configuration.
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