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Latest News
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.
José Guasp Pérez, Macarena Liniers
Fusion Science and Technology | Volume 24 | Number 3 | November 1993 | Pages 251-258
Technical Paper | Plasma Heating System | doi.org/10.13182/FST93-A30199
Articles are hosted by Taylor and Francis Online.
Theoretical evaluations of neutral beam injection (NBI) efficiency for the TJ-II helical-axis stellarator have been done for several expected scenarios using the FASOLT code, an adaptation of the FAFNER three-dimensional NBI Monte Carlo code to the peculiar geometry, vacuum vessel, and helical indented magnetic surfaces of TJ-II. The code is used in combination with another one-dimensional flux coordinates transport code (PLASMATOR). Results for 1-MW injected power, comparing coinjection and counterinjection, as well as 2- and 4-MW balanced injection, are discussed with emphasis on fast ion losses and wall loads. Some preliminary results, including radial electric field effects, are also presented.
