ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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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Nuclear Science and Engineering
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August 2024
Latest News
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.
Richard Sanchez, Abdelhuahed Chetaine
Nuclear Science and Engineering | Volume 136 | Number 1 | September 2000 | Pages 122-139
Technical Paper | doi.org/10.13182/NSE136-122
Articles are hosted by Taylor and Francis Online.
A characteristic method for transport calculations in two-dimensional geometries has been developed as a part of the interface-current transport code TDT. A complete description of angular and spatial approximations, as well as numerical implementation is given. A new synthetic acceleration technique has also been developed based on piecewise uniform and isotropic approximations for cell entering and exiting fluxes. Fourier analysis of the accelerated iterations shows the potential of the new acceleration scheme. Numerical results for one-group and multigroup problems involving realistic assembly geometries prove the performance of the acceleration in realistic unstructured geometries.