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2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
DNFSB’s Summers ends board tenure, extending agency’s loss of quorum
Lee
Summers
The Defense Nuclear Facilities Safety Board, the independent agency responsible for ensuring that Department of Energy facilities are protective of public health and safety, announced that the board’s acting chairman, Thomas Summers, has concluded his service with the agency, having completed his second term as a board member on October 18.
Summers’ departure leaves Patricia Lee, who joined the DNFSB after being confirmed by the Senate in July 2024, as the board’s only remaining member and acting chair. Lee’s DNFSB board term ends in October 2027.
Benjamin Ruiz-Yi, Lucas M. Angelette, Paul R. Beaumont
Fusion Science and Technology | Volume 80 | Number 1 | January 2024 | Pages 48-54
Research Article | doi.org/10.1080/15361055.2023.2196238
Articles are hosted by Taylor and Francis Online.
The separation of tritiated sources from the exhaust stream of a nuclear fusion system remains a key area of study. While current hydrogen isotope separation technologies are effective at separating gaseous elemental hydrogen, they require additional costly and time-intensive electrolysis steps to be applied toward tritiated water. Previous work has proposed a capture and exchange method, which this work has applied to screen for an optimal weight loading of platinum onto a zeolite molecular sieve. Several samples of various weight loadings were cycled using a series of isotope exchange processes, and it was determined that a weight loading between 0.65 to 0.80 wt% Pt is optimal to separate heavier isotopes of hydrogen from a water waste stream.