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
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
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!
Latest Magazine Issues
Aug 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
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.
R. Roy, A. Hébert, G. Marleau
Nuclear Science and Engineering | Volume 115 | Number 2 | October 1993 | Pages 112-128
Technical Paper | doi.org/10.13182/NSE93-A28522
Articles are hosted by Taylor and Francis Online.
The integral transport equation is solved in periodic slab lattices in the case where a critical buckling search is performed. First, the angular flux is factorized into two parts: a periodic microscopic flux and a macroscopic form with no angular dependence. The macroscopic form only depends on a buckling vector with a given orientation. The critical buckling norm along with the corresponding microscopic flux are obtained using anisotropic collision probability calculations that are repeated until criticality is achieved. This procedure allows the periodic boundary conditions of slab lattices to be taken into account using closed-form contributions obtained from the cyclic-tracking technique, without resorting to infinite series of exponential-integral evaluations. Numerical results are presented for one-group heterogeneous problems with isotropic and anisotropic scattering kernels, some of which include void slit regions.