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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Latest News
Take steps on SNF and HLW disposal
Matt Bowen
With a new administration and Congress, it is time once again to ponder what will happen—if anything—on U.S. spent nuclear fuel and high-level waste management policy over the next few years. One element of the forthcoming discussion seems clear: The executive and legislative branches are eager to talk about recycling commercial SNF. Whatever the merits of doing so, it does not obviate the need for one or more facilities for disposal of remaining long-lived radionuclides. For that reason, making progress on U.S. disposal capabilities remains urgent, lest the associated radionuclide inventories simply be left for future generations to deal with.
In March, Rick Perry, who was secretary of energy during President Trump’s first administration, observed that during his tenure at the Department of Energy it became clear to him that any plan to move SNF “required some practical consent of the receiving state and local community.”1
V. V. Kirsanov
Fusion Science and Technology | Volume 28 | Number 3 | October 1995 | Pages 1200-1204
Tritium Properties and Interaction with Material | Proceedings of the Fifth Topical Meeting on Tritium Technology In Fission, Fusion, and Isotopic Applications Belgirate, Italy May 28-June 3, 1995 | doi.org/10.13182/FST95-A30572
Articles are hosted by Taylor and Francis Online.
Simultaneous effects of radiation induced defects and gas atoms of various types in the near surface layers of the first wall material of a fusion reactor produced rather intricate pictures of their interaction and diffusion. This work describes our attempt, by using computer simulation methods, to look into He and H interaction reactions with radiation - induced vacancies and interstitial atoms, to determine the more movable defect formations that are responsible for gas migration. More movable mixed helium-vacancy cluster is discovered (H+2V). Reactions of pushing out helium from substitutional position by self - interstitial atom as well as hydrogen by helium atom which has come to it have been discovered. It is shown that the latter reaction pointing out the possible competition between He and H, while occupying vacancy trap, can cause He permeability reduction compared to hydrogen permeability, that is to supposed affect gas porosity formation.
