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
Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Virginia utility considers SMRs
Dominion Energy Virginia has issued a request for proposals from leading nuclear companies to study the feasibility of putting a small modular reactor at its North Anna nuclear power plant.
While the utility says it is not a commitment to build an SMR at the site, the RFP is “an important first step in evaluating the technology and the North Anna site to support Dominion Energy customers’ future energy needs consistent with the company’s most recent Integrated Resource Plan.”
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.
