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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.
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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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Fusion Science and Technology
Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
S.K. Sood, C. Fong, K.M. Kalyanam, O.K. Kveton, A. Busigin, D.M. Ruthven
Fusion Science and Technology | Volume 21 | Number 2 | March 1992 | Pages 299-304
Tritium Processing | doi.org/10.13182/FST92-A29761
Articles are hosted by Taylor and Francis Online.
Pressure Swing Adsorption (PSA), which is a well established industrial process for separating and purifying industrial gases, is proposed for recovery of hydrogen isotopes from the ITER (International Thermonuclear Experimental Reactor) solid breeder He purge stream. The PSA process has an inherent advantage over a recently proposed Temperature Swing Adsorption (TSA) design because it allows much faster cycling (10 vs. 480 min.) and therefore has significantly (48 times) lower tritium inventory. The maximum tritium inventory for a 10 minute PSA cycle is less than 0.5 g of tritium, thus meeting an important safety goal of ITER. The PSA process is based on using molecular sieve 5A at 77 K, with pressure cycling from 1 – 2 MPa during the adsorption cycle, to a rough vacuum during regeneration. Experiments have been carried out to confirm the H2/He adsorption isotherms on molecular sieve 5A, and to develop new data points at low H2 partial pressures and a temperature of 77 K. A dynamic simulation model has been developed to facilitate system design and optimization. Simulation results indicate that a single-pass hydrogen isotope recovery of 50–80% is achievable, and that hydrogen purity of more than 99% is possible to obtain from the blanket purge stream containing only 0.1% total hydrogen in helium. Further experiments are underway to verify the dynamic simulation results and to investigate alternative adsorbent materials.