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.
Explore membership for yourself or for your organization.
Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
Aug 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
Ribbon-cutting scheduled for Advanced Manufacturing Collaborative
Energy Secretary Chris Wright will attend the opening of the Advanced Manufacturing Collaborative in Aiken, S.C., on August 7. Wright will deliver remarks and join Savannah River National Laboratory leadership and partners for a ribbon-cutting ceremony.
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.