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
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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Nuclear Technology
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February 2025
Latest News
Fabrication milestone for INL’s MARVEL microreactor
A team from Idaho National Laboratory and the Department of Energy’s Office of Nuclear Energy (DOE-NE) recently visited Carolina Fabricators Inc. (CFI), in West Columbia, S.C., to launch the fabrication process for the primary coolant system of the MARVEL microreactor. Battelle Energy Alliance (BEA), which manages INL, awarded the CFI contract in January.
N. Abe, M. Kato, H. Nagasaka
Nuclear Technology | Volume 70 | Number 3 | September 1985 | Pages 335-342
Technical Paper | Fission Reactor | doi.org/10.13182/NT85-A15960
Articles are hosted by Taylor and Francis Online.
Upper plenum level oscillatory phenomena were observed in boiling water reactor upper plenum mixing experiments. These phenomena were due to the multidimensional interaction of a highly subcooled spray water injected into the upper plenum with a twophase mixture and vapor. Analysis of these phenomena was performed by TRAC-BD1, which is based on a multidimensional, nonhomogeneous, nonequilibrium, two-phase flow model to assess its predictive capability. It was found that TRAC-BD1 can predict upper plenum level oscillatory phenomena by using a simple upper plenum model that accounts for the interaction of a highly subcooled spray with vapor and a two-phase mixture.
