ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting Spotlight
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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Nuclear Science and Engineering
October 2024
Nuclear Technology
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August 2024
Latest News
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.
J. J. Van Binnebeek
Nuclear Science and Engineering | Volume 54 | Number 3 | July 1974 | Pages 341-352
Technical Paper | doi.org/10.13182/NSE74-A23424
Articles are hosted by Taylor and Francis Online.
Using the asymptotic transport theory and the reactor image method in a reactor lattice, the group theory is applied to develop a solid-state physics formalism, generalizing Nelkin’s theory for homogeneous media. The eigenvalues of the transport operator are shown to be classified according to the representations of the lattice symmetry group, while the corresponding flux eigenfunctions form a basis for those representations. These flux eigenfunctions have a Bloch form that can be interpreted as a factorization of the flux into a macroscopic and a microscopic shape. Finally, the transport eigenvalue problem is shown to be reduced to a unit cell eigenvalue problem for a modified transport equation, the resolution of which can be simplified by symmetry considerations in the choice of trial functions for some variational principle.