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
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
Aug 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
August 2024
Latest News
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
I. E. Knudsen, H. E. Hootman and N. M. Levitz
Nuclear Science and Engineering | Volume 20 | Number 3 | November 1964 | Pages 259-265
Technical Paper | doi.org/10.13182/NSE64-A19567
Articles are hosted by Taylor and Francis Online.
This new, dry process employs fluidization and particle-coating techniques and involves direct conversion of uranium hexafluoride to a solid, (uranyl fluoride), by hydrolysis with steam followed by reduction of the uranyl fluoride to the dioxide by reaction with steam-hydrogen mixtures. Process studies were carried out in 3-in.-diameter Monel reactors. The uranium-hexafluoride/steam reaction was conducted continuously at relatively low temperatures, about 200 C, at a uranium hexafluoride rate equivalent to 174 lb uranium h-1 ft-2 of reactor cross section and a steam rate of about 3.25 times the stoichiometric requirement. Seed addition was required to offset particle-growth effects. Uranium losses to the off-gas were less than 0.01% of the hexafluoride fed. Reduction of the uranyl fluoride to the oxide was demonstrated in batch tests. Low-fluoride (<250 parts/106 residual) material was consistently produced in four hours at 650 C and in seven hours at 600 C using a 50:50 mixture of steam and hydrogen. Pellet-fabrication tests on dioxide powders ground to -325 mesh gave sintered densities of about 94% of theoretical.