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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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!
Latest Magazine Issues
Mar 2025
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
March 2025
Nuclear Technology
Fusion Science and Technology
February 2025
Latest News
NRC begins special inspection at Hope Creek
The Nuclear Regulatory Commission is conducting a special inspection at Hope Creek nuclear plant in New Jersey to investigate the cause of repeated inoperability of one of the plant’s emergency diesel generators, the agency announced in a February 25 news release.
P. R. McClure, M. T. Leonard, A. Razani
Nuclear Science and Engineering | Volume 114 | Number 2 | June 1993 | Pages 102-111
Technical Paper | doi.org/10.13182/NSE93-A24021
Articles are hosted by Taylor and Francis Online.
A computational model is described for fission product release from molten pools of uranium-aluminum (U-Al) metal. Liquid-metal pools may form during severe accidents in U-Al-fueled reactors if multiple core assemblies melt and relocate to the bottom of the reactor vessel. At present, data for the release of fission products from intact U-Al fuel are sparse, and no data are available for the release of fission products from U-Al in the form of molten pools. This investigation postulates three phenomena that govern fission product release from such a system: (a) Rayleigh cell convection in the molten pool; (b) nucleation of volatile radionuclide species with concomitant bubble dynamics; and (c) diffusion from the pool surface. Selected sensitivity analyses have been performed to study the dependence of model predictions on uncertain input parameters and thus to characterize critical needs for experimental data. The results of the sensitivity analysis indicate that parameters that characterize the nucleation rate of volatile species in the pool have the greatest effect on the calculated rate of fission product release.