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2024 ANS Annual Conference
June 16–19, 2024
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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.
Li-Min Jin, Shuai Wu, Tong Li, Song Xue, Jia-Hua Chen, Wan-Qian Zhu
Nuclear Science and Engineering | Volume 196 | Number 8 | August 2022 | Pages 1020-1029
Technical Note | doi.org/10.1080/00295639.2022.2029676
Articles are hosted by Taylor and Francis Online.
To study the influence of a helical wire coil on the convective heat transfer capacity of the cylindrical cooling tube, then to obtain the enhanced cooling characteristics, a comparative analysis is performed between the cases with and without the wire coil based on finite element analysis. In particular, a specific model of the cooling tube with both the smooth inner wall areas and helical wire coil area is established. By comparing the flow velocities, fluid pressures, and convective heat transfer coefficients, etc., the significant effect of a helical wire coil on improving the convective heat transfer capacity is explained quantitatively. In addition, the enhanced cooling mechanism can be described in three points, i.e., increasing the thermal contact area, thinning or destroying the boundary layer, and promoting the formation of turbulence.