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
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!
Latest Magazine Issues
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
July 2025
Nuclear Technology
Fusion Science and Technology
Latest News
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.
Bernd Grambow, R. S. Forsyth, Lars O. Werme, Jordi Bruno
Nuclear Technology | Volume 92 | Number 2 | November 1990 | Pages 204-213
Technical Paper | Nuclear Fuel | doi.org/10.13182/NT90-A34471
Articles are hosted by Taylor and Francis Online.
Observations on the mechanism of oxidation of UO2 in air and results from X-ray photoelectron spectroscopy surface analyses of UO2 electrodes exposed to aqueous solutions show that the dissolving solid under oxic conditions is essentially U3O7 formed by oxygen diffusion on the UO2 surface. Saturation effects with respect to U3O7 can be of importance for the overall reaction rate if oxygen transport to the dissolving surface is limited. The release of soluble radionuclides in solid solution with the UO2 matrix appears to be limited by the mass transfer rates for the conversion of U3O7 to alteration products such as schoepite. The rates of 90Sr and 137Cs release decrease with the square root of time under uranium-saturated conditions. This time dependence may be explained by either grainboundary diffusion or by oxygen diffusion through the alteration product phase.
