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The busyness of the nuclear fuel supply chain
Ken Petersenpresident@ans.org
With all that is happening in the industry these days, the nuclear fuel supply chain is still a hot topic. The Russian assault in Ukraine continues to upend the “where” and “how” of attaining nuclear fuel—and it has also motivated U.S. legislators to act.
Two years into the Russian war with Ukraine, things are different. The Inflation Reduction Act was passed in 2022, authorizing $700 million in funding to support production of high-assay low-enriched uranium in the United States. Meanwhile, the Department of Energy this January issued a $500 million request for proposals to stimulate new HALEU production. The Emergency National Security Supplemental Appropriations Act of 2024 includes $2.7 billion in funding for new uranium enrichment production. This funding was diverted from the Civil Nuclear Credits program and will only be released if there is a ban on importing Russian uranium into the United States—which could happen by the time this column is published, as legislation that bans Russian uranium has passed the House as of this writing and is headed for the Senate. Also being considered is legislation that would sanction Russian uranium. Alternatively, the Biden-Harris administration may choose to ban Russian uranium without legislation in order to obtain access to the $2.7 billion in funding.
Daren P. Stotler, Glenn Bateman
Fusion Science and Technology | Volume 15 | Number 1 | January 1989 | Pages 12-28
Technical Paper | Plasma Engineering | doi.org/10.13182/FST89-A25320
Articles are hosted by Taylor and Francis Online.
Detailed simulations of the Compact Ignition Tokamak are carried out using a 1½-dimensional transport code. The calculations include time-varying densities, fields, and plasma shape. Ignition can be achieved in this device if somewhat better than L-mode energy confinement time scaling is possible. The performance of such a compact, short-pulse device can depend greatly on how the plasma is evolved to its flattop parameters. Furthermore, in cases such as the ones discussed here, where there is not a great deal of ignition margin and the electron density is held constant, ignition ends if the helium ash is not removed. In general, control of the deuterium-tritium density is equivalent to burn control.