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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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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.
T. Shimooke
Nuclear Science and Engineering | Volume 37 | Number 3 | September 1969 | Pages 343-357
Technical Paper | doi.org/10.13182/NSE69-A19111
Articles are hosted by Taylor and Francis Online.
The phenomenon of neutron focusing by a totally reflecting conical tube is studied in terms of the focused neutron currents, the spectrum shift, and the gains in beam intensity and in increasing the reaction rate of a 1/v absorber. The influence of the source temperature, the angular spread of the source flux, the geometrical variations of the conical pipe, and the reflectivity are considered. Two different approximate formulations on the focused neutrons in a reflecting tube are established for the purpose of carrying out the numerical calculations. The formulation allows detailed calculations on each order of multiple reflection, taking the tube geometry into consideration. The analysis shows that relatively strongly focused neutron currents are attainable under proper conditions by means of a “focalizer,” a reflecting conical tube. The uses of a multistage focalizer are also suggested, showing examples where both intensity and a 1/v absorption rate in an exposed sample can be enhanced.