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
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
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.
L. J. Anastasia, P. G. Alfredson, M. J. Steindler
Nuclear Technology | Volume 7 | Number 5 | November 1969 | Pages 433-442
Chemical Process | doi.org/10.13182/NT69-A28446
Articles are hosted by Taylor and Francis Online.
The fluorination step in a fluidized-bed fluoride volatility process has been studied in a 2-in.-diam reactor using BrF5 and fluorine as fluorinating agents and sintered alumina as the fluidized bed. Fuel pellets containing UO2, PUO2, and nonradioactive fission product oxides were pulverized by oxidation before uranium was selectively fluorinated with dilute BrF5; plutonium was then fluorinated with concentrated recycled fluorine. Fission product elements added to the system simulated burnups of 10 000 and 30 000 MWd/ton. Several aspects of the fluoride volatility process are discussed: effect of variations in process parameters on residual plutonium in the bed, distribution of selected fission products and 106Ru tracer, demonstration of reduced plutonium losses by reuse of a single alumina bed to process three batches of pellets at each of the simulated burnups of 10 000 and 30 000 MWd/ton, plutonium inventory in the reactor, and sampling the fuel charge for material balance and accountability. A processing step for a hybrid process incorporating leaching of the fluidized bed with nitric acid after uranium fluorination with BrF5 was also demonstrated.
