About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Interrelated Extremes in Materials Degradation for Fission and Fusion Environments
|
| Presentation Title |
Analysis of Attenuation Data from the Beltline of the Reactor Pressure Vessel from the Decommissioned ZION 1 Nuclear Power Plant |
| Author(s) |
Mikhail Sokolov, Roger Stoller |
| On-Site Speaker (Planned) |
Mikhail Sokolov |
| Abstract Scope |
In order to examine the attenuation of radiation damage through the thickness of an irradiated reactor pressure vessel (RPV), beltline segment was acquired from the Zion Unit 1 power plant RPV after the plant was decommissioned. The Zion Unit 1 RPV Beltline Segment was cut into seven blocks, five base metal and two beltline welds from the high fluence region of the segment. Through-wall test specimens were machined and tested. Specimens included those used for Charpy impact and fracture toughness testing, chemical analysis, and atom probe tomography characterization. A variety of material and irradiation parameters were investigated using both the embrittlement trend curves and the microstructural models in attempt to understand the behavior of the Zion beltline materials. The results of a simple, model-based analysis of the Zion materials that included the irradiation conditions and material chemistry were generally consistent with industry trend curves and the standard attenuation model. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Environmental Effects, Nuclear Materials |