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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.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
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.
Rashmi C. Desai, Mark Nelkin
Nuclear Science and Engineering | Volume 24 | Number 2 | February 1966 | Pages 142-152
Technical Paper | doi.org/10.13182/NSE66-A18299
Articles are hosted by Taylor and Francis Online.
The time-dependent moments equations derived from the linearized Boltzmann equation are solved for the case of an infinite nonabsorbing medium of hard spheres. The distribution function at zero time is chosen to be Maxwellian at origin and zero elsewhere. The solutions can be applied to neutron diffusion in monatomic hydrogen and to the motion of atoms in a dilute monatomic gas. In the latter case, the solutions give the spatial moments of Van Hove's self-correlation function Gs(,t). Non-Gaussian corrections to Gs(, t) are studied. It is found that these corrections are very sensitive to the type of anisotropy of the scattering kernel. Various approximations (including synthetic kernel) of the exact kernel for a hard sphere gas are considered. The non-Gaussian corrections obtained from approximate kernels are compared with those obtained from the exact kernel. In particular, a recently published kinetic model calculation, using a separable isotropic kernel with l/v scattering cross section, overestimates the non-Gaussian corrections by a factor of almost 4.