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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.
Huaichu Dai, Damao Yao, Gang Lv, Qisheng Xu, Lei Xiu, Feixiang Jin
Fusion Science and Technology | Volume 75 | Number 1 | January 2019 | Pages 59-66
Technical Paper | doi.org/10.1080/15361055.2018.1499395
Articles are hosted by Taylor and Francis Online.
As one of the key components in tokamak fusion reactor, the divertor is often exposed to tritium environment, high heat flux, and neutron radiation which are harmful for human beings and the divertor itself, which is damaged easily. So maintenance for the divertor is necessary. However, due to neutron damage and activation, maintenance for the divertor should be done in a remote way rather than by personnel directly, especially the process for installing the divertor into the inner and outer rails in the vacuum vessel from the outside. As an important compatible structure for the divertor remote handling (RH) process, inner and outer supports should be considered for ensuring the RH process goes well. Thus this paper introduces the China Fusion Engineering Test Reactor divertor support design mechanism, including inner support and outer support, which are based on the requirements of RH. Then the electromagnetic forces generated by Halo current and Eddy current due to plasma disruption are analyzed in order to validate the design of the newly designed support mechanism.