ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
August 2024
Nuclear Technology
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Latest News
BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
J. P. McBride, K. H. McCorkle, Jr., W. L. Pattison, B. C. Finney
Nuclear Technology | Volume 13 | Number 2 | February 1972 | Pages 148-158
Technical Paper | Chemical Processing | doi.org/10.13182/NT72-A31049
Articles are hosted by Taylor and Francis Online.
Urania sol is used for preparing uranium oxide microspheres for nuclear reactor fuels. A new process for producing concentrated, 1 M U or more, crystalline urania sols by solvent extraction has been developed. This process is based on a time-temperature conductivity-controlled extraction of nitric acid from a hydrolyzing U(IV) nitrate-formate solution using an amine-in-hydrocarbon extractant. The sols contain predominantly crystalline urania, and are more resistant to rapid, spontaneous gelation and other variations in properties than earlier sols made by solvent extraction. Also, earlier solvent extraction processes produced dilute (0.2-0.3 M U) sols that required concentration to 1 M before making the spheres. The preparation of a satisfactory sol depends on ensuring crystallization of the urania, minimizing uranium oxidation, and having a stable U(IV) nitrate-formate feed solution. Feed solutions were made by reducing uranyl nitrate-formate solution with platinum-catalyzed hydrogen at atmospheric pressure. The reduction requires vigorous agitation of the solution and continuous electrometric monitoring of the U(IV)/U(VI) redox potential to minimize harmful side reactions. The studies include both laboratory development and an engineering-scale demonstration.