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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.
J. Ernest Wilkins, Jr.
Nuclear Science and Engineering | Volume 5 | Number 4 | April 1959 | Pages 207-214
Technical Paper | doi.org/10.13182/NSE59-A25585
Articles are hosted by Taylor and Francis Online.
A simple analytic formula is derived for the values of the prompt neutron density, the delayed neutron emitter densities, and the period in a reactor at the instant it has becòme prompt critical under the assumption that it has been brought to a prompt critical state from an arbitrary subprompt critical initial state by introducing reactivity at the constant rate of a dollars per second. For a fixed value of a, these formulas are asymptotic with respect to small values of the dimensionless parameter al/β, in which l is the mean lifetime of a neutron in the reactor and β is the fraction of fission neutrons which are delayed. For fast reactors, the quantity l/β is generally small, so that our formulas should be useful in estimating the power rise at prompt critical unless the rate of introduction of reactivity is quite large.