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The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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.
R. J. Neuhold
Nuclear Science and Engineering | Volume 43 | Number 1 | January 1971 | Pages 74-86
Technical Paper | doi.org/10.13182/NSE71-A21248
Articles are hosted by Taylor and Francis Online.
The weighted residual procedure was used to expand the fast reactor space-energy synthesis approach to include multiple (discontinuous) weighting functions with continuous trial functions. In the past (except for discontinuous trial function applications) the number of weighting functions was chosen equal to the number of trial functions, and all region and current residuals were weighted with the same set of weights. In this article, each region residual and each boundary residual is separately weighted. The region residuals are weighted with region reaction rates, and the current boundary conditions are weighted with a boundary “reaction rate.” Numerical results are presented for a typical two-region (core and blanket) fast reactor in which multiple reaction rate weighting and a special use of reaction rate weighting are compared with previously used fast reactor space-energy synthesis weighting forms. The results, based on using realistic trial functions, show that multiple reaction rate weighting is generally better than Galerkin or reaction rate weighting, and approaches or exceeds the accuracy of adjoint weighting for the cases examined. Although the group balance or weighted group balance weighting is improved with an application of reaction rate weighting, preliminary results based on an extension of the two techniques to multiple reaction rate weighted group balance were not encouraging. Applications of various weighting functions using poor trial functions show the necessity of realistic trial spectra if weighting functions are to be improved. Multiple reaction rate weighting maintains the “easy to use” feature of Galerkin weighting with considerable potential for multiregion error reduction.