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Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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Molten salt research is focus of ANS local section presentation
The American Nuclear Society’s Chicago–Great Lakes Local Section hosted a presentation on February 27 on developments at the molten salt research reactor at Abilene Christian University’s Nuclear Energy Experimental Testing (NEXT) Lab.
A recording of the presentation is available on the ANS website.
Wallace Davis, Jr.
Nuclear Science and Engineering | Volume 14 | Number 2 | October 1962 | Pages 159-168
Technical Paper | doi.org/10.13182/NSE62-A28115
Articles are hosted by Taylor and Francis Online.
The distribution of 0–8 M HNO3 between aqueous and 5–100 vol % solutions of TBP in Amsco 125-82 has been measured and used to obtain a quantitative description of this extraction process. Up to ∼5 M aqueous HNO3, a limit arbitrarily chosen because of uncertainties in HNO3 activity coefficients, the data of this report at any particular concentration of TBP in Amsco are accurately described by the equation log [(HNO3)org/{[HNO3]aq(3.75493-(HNO3)org)}] = A + B (HNO3)org, where parentheses refer to concentrations, square brackets to activities, and subscripts org and aq to organic and aqueous phases. The antilogarithms of the constants A for the six TBP-diluent solutions studied can be described as a linear function of , the sum of the mole fractions, and , of water and TBP in the acid-free water-saturated organic phase. These antilogarithms were interpreted as the product K1mγT, where K1m is the thermodynamic equilibrium constant for the extraction reaction and γT is the mean activity coefficient of TBP and TBP·H2O in the acid-free, water-saturated organic phase. As the concentration of TBP in Amsco 125-82 increases from 0 to 100%, K1mγT, in molal units, varies from 0.2 to 1.5. The quantities B of the above equation are proportional to while the product B(HNO3)org is interpreted as log γTN, where γTN is the mean activity coefficient of the species TBP·HNO3 and TBP·HNO3·H2O. The organic phase water and acidity values are consistent with formation of the complexes TBP·H2O, TBP·HNO3, TBP·HNO3·H2O, and TBP·2HNO3.
