ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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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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.
T. J. Yule, E. F. Bennett
Nuclear Science and Engineering | Volume 46 | Number 2 | November 1971 | Pages 236-243
Technical Paper | doi.org/10.13182/NSE71-A22357
Articles are hosted by Taylor and Francis Online.
Central neutron spectra were measured with proton-recoil proportional counters in a number of uranium- and plutonium-fueled fast reactor assemblies. The energy range of the measurements is from 1 keV to 2 MeV. Short descriptions are included of the experimental technique and of the correction schemes necessary to remove inherent systematic errors in this method of spectroscopy. The measured neutron spectra are compared with homogeneous fundamental- mode calculated spectra. ENDF/B Version I data were used. In general, the agreement between the measured and calculated spectra is good. The comparisons have revealed some systematic discrepancies which are believed to be outside of experimental error near neutron scattering resonances and at low and high energies. These differences are beyond those associated with heterogeneity effects introduced by the plate loadings of the cores.