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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.
W. J. M. de Kruijf, A. J. Janssen
Nuclear Science and Engineering | Volume 123 | Number 1 | May 1996 | Pages 121-135
Technical Paper | doi.org/10.13182/NSE94-108
Articles are hosted by Taylor and Francis Online.
Calculations of resonance absorption for simple temperature profiles both in a slab and in a pin of 238UO2 are presented to show the influence of a nonuniform fuel temperature profile on the choice of the equivalent uniform temperature, or the effective fuel temperature. The effective fuel temperature is given as a weighted average of the temperatures in the fuel zones. Two simple theoretical expressions for this weighted average, derived from the literature, are discussed. First, for high absorption, the effective fuel temperature is given by the so-called chord-averaged fuel temperature. Second, for low absorption, the effective fuel temperature is given by the volume-averaged fuel temperature. The results for a slab of 238UO2 show that a bruteforce method is necessary to calculate an accurate effective fuel temperature. A set of weights for one specific 238UO2 pin is calculated. This set agrees well with the chord-averaged fuel temperature. However, this appears to be a coincidence because the results for specific neutron energy ranges do not agree with this set of weights.