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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
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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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.”
Rudolf Avenhaus
Nuclear Science and Engineering | Volume 86 | Number 3 | March 1984 | Pages 275-282
Technical Paper | doi.org/10.13182/NSE84-A17556
Articles are hosted by Taylor and Francis Online.
The present state of the evaluation of material balance data in the framework of international nuclear material safeguards is reviewed. The safeguards objectives, laid down qualitatively in the model agreement of the International Atomic Energy Agency, are formulated quantitatively in statistical terms as high probability of detection and short expected detection time in case of diversion. According to these objectives, the analysis consists of two parts: In the first part, a fixed reference time containing a given number of inventory periods is considered. Here, the optimal decision procedure can be determined explicitly. In the second part, an infinite reference time consisting of inventory periods of given lengths is considered. Here, only a general framework for the optimal decision procedure can be given so far; therefore, plausible procedures are discussed.