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Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
E. D. Arnold
Nuclear Science and Engineering | Volume 3 | Number 6 | June 1958 | Pages 707-725
Technical Paper | doi.org/10.13182/NSE58-A25506
Articles are hosted by Taylor and Francis Online.
The buildup of the important transmutation products in irradiated uranium was calculated. Significant quantities of such products are produced upon irradiation with pile neutrons, using an MTR geometrical configuration as reference. These quantities are further increased with subsequent recycle through power reactors. The nuclides are U236, U237, Np237, and Pu238. Variables included in this study were: irradiation levels of 6 × 1019 to 3 × 1021 n/cm2; effect of recycle in the range 1 to 400 cycles and infinite recycle (or steady state); initial fuel enrichment (where applicable) in the range of 0.5–3.0% U235; and the effect of fraction of U236 removed by a gaseous diffusion plant reconcentration of U235 in the range 0–100% removal. This last variable depends on the operational characteristics of the diffusion plant. The buildup of transmutation products may have many appreciable effects on the design and operation of fuel recycle. The decay time required will increase as a result of higher concentrations of U237; chemical separation plants may be required to separate Np237 as well as uranium, plutonium, and fission products; and the buildup of Pu238 in the plutonium product may create additional biological or handling problems. An important conclusion of this work is that all problems resulting from isotope buildup in the U235 buildup chain may be decreased in seriousness by approximately an order of magnitude with removal of about 25% of the U236 by re-enrichment in a gaseous diffusion plant.