|About this Abstract
||MS&T23: Materials Science & Technology
||Progressive Solutions to Improve Corrosion Resistance of Nuclear Waste Storage Materials
||Evaluating the Sensitivities of an Environmental Cracking LEFM-based Model for Use in Realistic Lifetime Predictions of Nuclear Waste Storage Casks
||Sarah Blust, James Burns
|On-Site Speaker (Planned)
Spent nuclear fuel (SNF) is currently stored across the US in passively-cooled stainless steel dry cask storage (DCS) systems. Due to the design of DCS systems, aerosols from the outside environment are able to deposit on the stainless-steel canisters. Over time the deposited aerosols will deliquesce on canisters to form concentrated salt brines resulting in localized corrosion, which when coupled with the high residual stress around welds can lead to stress corrosion cracking (SCC). Work has been done to generate SCC data and investigate sensitivities to environmental factors and microstructure variability. Concurrently, a probabilistic linear elastic fracture mechanics (LEFM) based model has been created to assist with lifetime management of DCS systems across the US. The work presented will look at the impact of individual modeling inputs on DCS lifetime predictions and demonstrate the utilization of this model for real-world SNF applications.