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FY21 Status Report: Probabilistic SCC Model for SNF Dry Storage Canisters

Porter, N.W.; Brooks, Dusty M.; Bryan, Charles R.; Katona, Ryan M.; Schaller, Rebecca S.

Stress corrosion cracking (SCC) is an important failure degradation mechanism for storage of spent nuclear fuel. Since 2014, Sandia National Laboratories has been developing a probabilistic methodology for predicting SCC. The model is intended to provide qualitative assessment of data needs, model sensitivities, and future model development. In fiscal year 2021, improvement of the SCC model focused on the salt deposition, maximum pit size, and crack growth rate models.