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
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver 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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Apr 2025
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Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
C. E. Johnson, D. C. Fee
Nuclear Technology | Volume 40 | Number 1 | August 1978 | Pages 89-97
Technical Paper | Material | doi.org/10.13182/NT78-A26702
Articles are hosted by Taylor and Francis Online.
Oxidative attack of stainless-steel cladding in mixed uranium-plutonium oxide fast reactors may limit the life of the fuel pins. Present knowledge of cladding reactions suggests that the key factor in controlling cladding attack may be control of the oxygen potential (ΔḠ = RT ln p) by the insertion of oxygen getters within the fuel pin. Niobium, titanium, and vanadium are prime candidates as oxygen getters because they are easily oxidized at more negative oxygen potentials than the stainless-steel cladding. On the basis of predicted oxidation rates at the low oxygen pressures encountered in fuel pins, the recommended order of getter suitability is V >Nb >Ti.
