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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Alfred W. Reed, Herbert Meister, Daniel J. Sasmor
Nuclear Technology | Volume 78 | Number 1 | July 1987 | Pages 54-61
Technical Paper | Nuclear Safety | doi.org/10.13182/NT87-A34008
Articles are hosted by Taylor and Francis Online.
One of the elements used to compute the dryout heat flux of a debris bed is the capillary pressure/saturation curve. This relationship describes the pressure difference between liquid and vapor phases in a porous bed as a function of saturation. It is used in the calculation of the liquid and vapor pressure drops in the debris and in the calculation of channel depth. The first complete correlation of capillary pressure/saturation data was reported in 1941 by Leverett. Leverett demonstrated that the data for unconsolidated sand in the 45- to 180-µm range could be non-dimensionalized using the liquid surface tension, bed permeability, and void fraction. At the time, the primary interest was in geologic materials and further work on unconsolidated particulate was limited. The presented measurements of capillary pressure are designed to check the range of validity of the Leverett correlation. For beds with narrow particle size distributions, the Leverett correlation is found to be adequate. For beds composed of broad size distributions, the capillary pressure curve changed significantly.
