Ceramic waste form modeling in the Yucca Mountain engineered barrier system

摘要

As part of the spent fuel treatment program at Argonne National Laboratory, CWFdegradation and radionuclide release modeling is being carried out to support the qualification of the CWF for disposal in the proposed repository at Yucca Mountain. Transition-state theory applied to the dissolution of aluminosilicate minerals provides a mechanistic basis for the dissolution model, while model parameters are obtained by experimental measurements. Performance assessment calculations carried out using the current model indicate that the CWF will perform in a similar manner to defense high-level waste glass, suggesting the CWF could be characterized by the HLW glass model in the Site Recommendation or License Application for Yucca Mountain.