| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Special Topics in Nuclear Materials: Lessons Learned; Non-Energy Systems; and Coupled Extremes
|
| Presentation Title |
Post Irradiation Examination and Administrative Lifetime Limits of Highly Irradiated Components at The Spallation Neutron Source |
| Author(s) |
David McClintock |
| On-Site Speaker (Planned) |
David McClintock |
| Abstract Scope |
High-energy radiation changes the microstructure and mechanical properties of structural components operated in high-radiation environments. These changes typically increase the risk of fracture, and the lifetime of these components are typically regulated by administrative lifetimes to limit the risk of failure during operation. Lifetime limits for a particular material and radiation environment are usually based on previous test results from similar materials and radiation environments, which frequently are not available for a particular material and radiation environment of interest. Post irradiation examination (PIE) of components after service is considered the best method for characterizing the radiation-induced changes that occur during operation. A PIE program is maintained at the Spallation Neutron Source (SNS) for targets and proton beam windows, where samples are regularly removed and characterized from these components after service. This presentation will discuss the current PIE program and component lifetime limit philosophies implemented at the SNS. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, Characterization |