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Division Spotlight
Mathematics & Computation
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.
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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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.
John J. Roberts, R. F. Fleming, Harold P. Smith, Jr.
Nuclear Science and Engineering | Volume 27 | Number 3 | March 1967 | Pages 573-580
Technical Paper | doi.org/10.13182/NSE86-A17624
Articles are hosted by Taylor and Francis Online.
The logic of the time-optimal solution to the xenon shutdown problem for a point reactor model has been successfully applied to an actual reactor system. Spatial integration of the flux-square weighted xenon concentration was used. The predetermined power variation with time successfully held the xenon boundary and created a final shutdown (target) trajectory whose maximum was within three percent of the specified boundary based on the total reactivity variation of the program. Although digital computer calculation, occasionally using trial-and-error techniques, was necessary to predict the power-time shutdown program, the computer requirements were not excessive. Approximately 7 h of additional reactor operation was utilized to prevent a 16 h period during which xenon buildup would have prevented reactor operation.