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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
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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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 N. Hwang
Nuclear Science and Engineering | Volume 52 | Number 2 | October 1973 | Pages 157-175
Technical Paper | doi.org/10.13182/NSE73-A28186
Articles are hosted by Taylor and Francis Online.
Work has been done to develop improved methods for treating resonance cross sections in both the resolved and the unresolved energy regions. The methods are natural extensions of previous methods using the J* treatment. Efficient numerical algorithms have been developed to make the methods highly economical for the routine fast reactor calculations. For the resolved energy region, a new technique is proposed for evaluating the generalized form of the resonance integral which allows the use of the multilevel formalism. By taking advantage of the asymptotic behavior of the Doppler-broadened line-shape functions, the technique of rational transformation is introduced. Gauss-Jacobi quadrature is used to evaluate the integral with the transformed integrand. The integration can be carried out efficiently. For the unresolved energy region, an accurate and efficient method has been developed for estimating the effect due to in-sequence overlap. In contrast to the previously developed methods, the new method is capable of treating practically all energy regions of practical interest in fast reactor applications. The Dyson correlation function is used to account for the proper correlation of levels. The method has been made economical for routine calculations.