Electrometallurgical Techniques for DOE Spent Fuel Treatment Status Report on Argonne National Laboratory's R & D Activity Through Spring 1997 (1997) / Chapter Skim
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Status of the EBR-II Spent Fuel Treatment Demonstration for 1999
Status of the EBR-II Spent Fuel Treatment Demonstration for 1999
Pages 6-8
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From page 6... ...
The committee's present understanding is that the Mark IV electrorefiner at ANL-W has an inner diameter of about 40 inches. There are four 1 O-inch-diameter ports on its top, two for loading and unloading the cathode mandrel on which uranium is deposited and collected and the other two for loading and unloading the anode baskets in which chopped fuel is placed and from which accumulated cladding hulls must be removed.
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From page 7... ...
Dissolution efficiencies are in the range of 88 to 99.9 percent, in the best cases exceeding the design basis of 99.5 percent.2 However, reproducibility of the dissolution step is uncertain enough that additional R&D may be warranted. Material balances are good for both Mark IV and Mark V: about 98 percent for driver fuel assemblies and about 95 percent for blanket assemblies.
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From page 8... ...
Process Development Process development work being carried out in the Mark IV has involved both irradiated and unirradiated materials and has used both depleted uranium and depleted uranium with zirconium metal present.; The presence of zirconium metal appears to improve both uranium collection efficiency and the nature of the uranium deposit. The electrorefining process is being carried out at constant current to a fixed voltage cutoff.
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