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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3 Research and Development in Support of Argonne National Laboratory's Demonstration Project
3 Research and Development in Support of Argonne National Laboratory's Demonstration Project
Pages 15-22
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From page 15... ...
A large number of the samples to be tested differ onIv very sliahtIv in minor allovina elements. The tests designed to accelerate corrosion rates involve immersion of the sample in deionized water in a titanium vessel at 200 C for 28 days.5 In the six alloy compositions that have been tested, corrosion rates were very low and no correlation of elemental leaching with alloy composition was found.
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for the stainless steed MWF.7 Because the MWF behaves much like stainless steel, the modeling approach is based on the results of ANL's current uniform corrosion test program, the use of known stainless steel degradation mechanisms as a basis of MWF release modeling, and the use of MWF corrosion rate data to adjust the models empirically. Factors considered important for radioisotope release include MWF metallurgy, degradation mechanisms, and environmental conditions.
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2. ANE needs to refocus near-term testing by reducing product consistency testing under relatively mild conditions and instead emphasizing product performance testing under more stringent conditions that may reveal significant corrosion effects and address success criterion 2, goal 2 (Appendix B)
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A EBR-II Spent Fuel Treatment Program Monthly Report August 1998, NT Technical Memorandum No. 91, Argonne National Laboratory, Argonne, IL, pp.
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It appears that there are no impediments to scale-up of HllP technology; 5. The additional glass matrix phase in HEP-processed material provides greater assurance that the radionuclides are more effectively contained in the zeolite matrix phase (more correctly sodalite, which is the transformation product of salt-loaded zeolite during hot pressing)
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RECOMMENDAT ON Assuming that an increased amount of glass in the waste form is acceptable, then in addition to HUP, conventional cold pressing and sintering should also be considered as a viable processing option. it may turn out that pressureless sintering offers technical advantages over HUP, especially in view of the difficulties associated with conducting ceramic waste form operations in a hot cell using remote handling methods, not to mention the particularly onerous task associated with repair and maintenance of equipment.
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17 Electrometallurgical Techniques for DOE Spent Fuel Treatment: Spring 1998 Status Report on Argonne National Laboratory's R&D Activity, National Academy Press, Washington, D.C., 1998, p.
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Based on the six engineering-scale tests conducted to date, the committee agrees that lithium electrowinning has been successfully demonstrated using a cathode consisting of stainless steel screen wrapped on a stainless steel rod, that progress has been made on understanding factors important in oxide fuel reduction kinetics, and that the reduction step can be interfaced successfully with the electrorefining step without caIryover of metallic lithium or Li2O. Aluminum Alloy Spent Fuels The feasibility of electrometallurgical treatment of aluminum alloy spent fuels has been demonstrated in laboratory-scale experiments.
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