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The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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2024 ANS Winter Conference and Expo
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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.
Charles F. Karlson
Nuclear Science and Engineering | Volume 121 | Number 1 | September 1995 | Pages 57-66
Technical Paper | doi.org/10.13182/NSE95-A24129
Articles are hosted by Taylor and Francis Online.
A method for the generation of in-core constants from the SIMULATE-3 advanced reactor analysis code is presented. This method builds on prior work at the Southern California Edison Company for the San Onofre Nuclear Generating Station and is now applied to the Combustion Engineering System 80 units at the Palo Verde Nuclear Generating Station (PVNGS). Power-to-signal ratios, assembly coupling coefficients, pin peaking factors, and Fourier Series analysis are shown to reproduce the SIMULATE-3 solution extremely well. Correction of SIMULATE-3 calculated in-core detector fluxes and cross sections for rhodium shielding and homogeneous-to-heterogeneous geometries are discussed. Calculated and measured detector signals are compared to confirm the ability to calculate the rhodium reaction rates needed for the power-to-signal ratio and are found to be within 2%.Core maximum power peaking factors and a radial assembly power distribution for PVNGS Unit 3 cycle 5 show excellent agreement with differences <2% in maximum power locations. This work is the basis for future improved reactor surveillance methods, with the realization of significant thermal margin gains from reduced uncertainties in the core protection system.