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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Moving forward with clarity
Hash Hashemianpresident@ans.org
The theme of this year’s Winter Conference—already less than two months away—is “Building the Nuclear Century.” This focus reflects one of my chief goals during my presidency: streamlining the deployment of new power plants. However, I want to emphasize that this call to build extends far beyond a sole focus on new commercial reactors. As an industry, it’s critical that we keep momentum going across every area that supports the nuclear community.
So, while new reactor announcements are undeniably exciting and a logical benchmark to see the positive progress we’re making, we must continue to ensure that there is space to elevate, focus on, and celebrate crucial work in the fields of isotope production, waste management, public outreach, workforce training, and beyond. The call to build is a call to innovate and collaborate in every sector. It’s a call we need to follow.
Karin Rudman, Patricia Dickerson, Darrin Byler, Robert McDonald, Harn Lim, Pedro Peralta, Chris Stanek, Kenneth McClellan
Nuclear Technology | Volume 182 | Number 2 | May 2013 | Pages 145-154
Technical Paper | Special Issue on the Symposium on Radiation Effects in Ceramic Oxide and Novel LWR Fuels / Fuel Cycle and Management | doi.org/10.13182/NT13-A16426
Articles are hosted by Taylor and Francis Online.
The oxygen content during the intermediate and final stages of sintering can have a strong effect on the microstructural evolution of oxide fuels. Two depleted urania (d-UO2.0 and d-UO2.14) samples, sintered up to a theoretical density of 90%, were serial sectioned using a focused ion beam and characterized with electron backscatter diffraction (EBSD). The EBSD data were used to make three-dimensional reconstructions of the microstructures to evaluate their characteristics at an intermediate stage of sintering. The oxygen content was found to affect grain shape and grain boundary (GB) mobility, as curved and elongated grains were observed in UO2.0, as well as stronger pore-GB interactions, which is an indication that microstructure was less evolved in UO2.0. Both samples presented a similar fraction ([approximate]20%) of special, coincident site lattice boundaries, with larger amounts of Σ3n GBs, and a rather large fraction of Σ11 GBs for UO2.14. Crystallographic GB planes were also determined to study the distributions of all GB parameters. The UO2.0 sample had a large fraction of GB planes close to the Σ3 twinning planes, which suggests that lower-energy interfaces are used to minimize energy in this sample, potentially due to lower overall GB mobility as compared to UO2.14.
