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
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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Nuclear Science and Engineering
March 2025
Nuclear Technology
Fusion Science and Technology
February 2025
Latest News
RP3C Community of Practice’s fifth anniversary
In February, the Community of Practice (CoP) webinar series, hosted by the American Nuclear Society Standards Board’s Risk-informed, Performance-based Principles and Policies Committee (RP3C), celebrated its fifth anniversary. Like so many online events, these CoPs brought people together at a time when interacting with others became challenging in early 2020. Since the kickoff CoP, which highlighted the impact that systems engineering has on the design of NuScale’s small modular reactor, the last Friday of most months has featured a new speaker leading a discussion on the use of risk-informed, performance-based (RIPB) thinking in the nuclear industry. Providing a venue to convene for people within ANS and those who found their way online by another route, CoPs are an opportunity for the community to receive answers to their burning questions about the subject at hand. With 50–100 active online participants most months, the conversation is always lively, and knowledge flows freely.
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.
