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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.
G. Traxler, A. Chalupka, R. Fischer, B. Strohmaier, M. Uhl, H. Vonach
Nuclear Science and Engineering | Volume 90 | Number 2 | June 1985 | Pages 174-185
Technical Paper | doi.org/10.13182/NSE85-A17675
Articles are hosted by Taylor and Francis Online.
The energy and angular distributions of the protons from the 93Nb(n, xp) reactions were investigated by means of the Vienna multitelescope system. Whereas total hydrogen production cross sections are in fair agreement with previous results, considerable deviations from a previous measurement of the shape of the angle-integrated proton spectrum have been found. No other detailed measurements of the angular distributions have as yet been reported. The angle-integrated results are compared with calculations based on the statistical model of nuclear reactions, including precompound processes. It is shown that the proton emission spectrum can be described within this model if the usual pairing correction is also used for the exciton state densities within precompound calculations and otherwise a set of parameters which gives an adequate description of all other neutron-induced reactions of 93Nb. The angular distributions, which show a strongly energy-dependent forward-backward asymmetry, are compared to the results of a phenomenological model and to those of direct reaction theory for continuum cross sections.