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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
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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Smarter waste strategies: Helping deliver on the promise of advanced nuclear
At COP28, held in Dubai in 2023, a clear consensus emerged: Nuclear energy must be a cornerstone of the global clean energy transition. With electricity demand projected to soar as we decarbonize not just power but also industry, transport, and heat, the case for new nuclear is compelling. More than 20 countries committed to tripling global nuclear capacity by 2050. In the United States alone, the Department of Energy forecasts that the country’s current nuclear capacity could more than triple, adding 200 GW of new nuclear to the existing 95 GW by mid-century.
J. G. Refling, A. B. Reynolds, P. L. Garner, S. P. Rao
Nuclear Technology | Volume 33 | Number 3 | May 1977 | Pages 275-289
Technical Paper | Fuel | doi.org/10.13182/NT77-A31789
Articles are hosted by Taylor and Francis Online.
The effect of nonequilibrium mass transfer on two-phase oxide fuel expansion was studied. An analytical model was applied to fuel expansion tests being planned at Oak Ridge National Laboratory (ORNL) and to whole-core expansion of a uniform bubble in Clinch River Breeder Reactor geometry. Among the parameters varied in the study are the liquid droplet radius (Rp) and the condensation and evaporation coefficients (σ). It was found that allowance for nonequilibrium mass transfer increased the expansion times for the ORNL tests when the ratio of σ/Rp was <1000 m−1. Nonequilibrium mass transfer had little effect on the whole-core expansions until σ/Rp reached unrealistically low values of <10 m−1.
