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!
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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.
Aaron Barkatt, Alisa Barkatt, Pehr E. Pehrsson, Pedro B. Macedo, Joseph H. Simmons
Nuclear Technology | Volume 56 | Number 2 | February 1982 | Pages 271-277
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT82-A32854
Articles are hosted by Taylor and Francis Online.
A solution has been developed to the problem of pH control in interactive (finite dilution) leach tests on waste forms. To make sure that the pH, which exercises a major influence on the reactivity of the medium, is controlled by extraction of soluble components of the waste form (alkalis, silicate, borate, etc.) into the leachant and not by extraneous factors originating in the testing system (CO2, fluoride, etc.), the complete ionic balance in the leachate is determined. A technique for carrying out reliable pH measurements on small samples of unbuffered leachants by means of a glass electrode in a flow cell has been developed. The achievement of satisfactory cation-anion balance in leach solutions using chemical and electrochemical techniques has made it possible to identify in every case the major species that determine the pH and to distinguish between interactive and constant-medium test configurations. Testing systems that minimize CO2 infiltration have been developed.
