| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Progressive Solutions to Improve Corrosion Resistance of Nuclear Waste Storage Materials
|
| Presentation Title |
Environmental Cracking Lifetime Prediction through the Development of Pitting and SCC Models for Nuclear Waste Storage Casks |
| Author(s) |
Sarah Blust, James T Burns |
| On-Site Speaker (Planned) |
Sarah Blust |
| Abstract Scope |
Used nuclear fuel (UNF) is currently stored across the US in passively cooled stainless steel dry storage canisters (DSC). Due to the design of the DSC, 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). The objective of this study is to create a model for the life-management of DSC, which will inform a framework to quantify and manage a risk-based ranking of storage sites. The specific goals of this work are to: (a) validate the maximum pit size model for DSC-relevant corrosion conditions (b) coupling the limiting pit size/Kondo approaches, (c) generate da/dt vs. K data and perform probabilistic FM predictions of SCC growth, and (d) validate the model predictions. |