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
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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November 2024
Nuclear Technology
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Keeping up with Kewaunee
In October 2012, Dominion Energy announced it was closing the Kewaunee nuclear power plant, a two-loop 574-MWe pressurized water reactor located about 27 miles southeast of Green Bay, Wis., on the western shore of Lake Michigan. At the time, Dominion said the plant was running well, but that low wholesale electricity prices in the region made it uneconomical to continue operation of the single-unit merchant power plant.
R. E. MacPherson, Jr., H. D. Stuart
Nuclear Science and Engineering | Volume 12 | Number 2 | February 1962 | Pages 225-233
Technical Paper | doi.org/10.13182/NSE62-A26061
Articles are hosted by Taylor and Francis Online.
Gas-cooled reactor systems can benefit from the use of internal metallic-foil insulations which take advantage of the relatively low thermal conductivity of the coolant gas itself. Tests have shown that, for design purposes, Nusselt, Grashof, and Prandtl number correlations for vertical gas spaces form a good basis for finding optimum foil spacing and for approximating insulation performance. Tests were conducted chiefly on a spirally wrapped foil arrangement in which in. spacing between adjacent foil turns was maintained by strips of corrugated sheet metal 1 in. in width. Results from this arrangement in an atmosphere of helium have shown gross effective thermal conductivity values to be approximately 150% of the values for the gas itself at pressures below 200 psia. From 200 psia to 1000 psia, conductivity increases with pressure to values approximately twice those for the gas itself. For the specific geometry tested effective conductivity was shown to be a function of mean insulation temperature, gas pressure, temperature gradient across the insulant, and insulation thickness.