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Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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. D. McKnight
Nuclear Science and Engineering | Volume 62 | Number 2 | February 1977 | Pages 309-330
Technical Note | doi.org/10.13182/NSE77-A26967
Articles are hosted by Taylor and Francis Online.
A series of benchmark calculations of critical experiments has been performed to assess the effects that recent changes in the ENDF/B data files have had on calculated liquid-metal fast breeder reactor parameters. Three well-documented critical assemblies were studied using standard methods of fast reactor analysis (two-dimensional multigroup diffusion theory) with both ENDF/B-III and -IV. A review of the changes in the principal cross sections incorporated in the latest evaluation has been made and was used to interpret the changes in calculated integral parameters. Some of the principal cross-section modifications included in ENDF/B-IV were: decreasing (≈2%), src ="fig002.gif" alt=""/> (≈1 to 1.5%), and src ="fig003.gif" alt=""/> (≈3 to 4%) and increasing src ="fig004.gif" alt=""/> (≈1 to 1.5%). In general, improved agreement between measured and calculated integral parameters has been obtained with the new ENDF/B evaluation. The overprediction of 28c/49 ƒ is reduced slightly (≈1.5%); the central worth calculation-to-experiment discrepancy is generally reduced (≈5 to 15%); and little change occurs in the calculated eigenvalues that remain ≈1.0 to 1.5% δk low.