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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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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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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.”
Eric Lukosi
Nuclear Science and Engineering | Volume 188 | Number 3 | December 2017 | Pages 294-302
Technical Paper | doi.org/10.1080/00295639.2017.1367248
Articles are hosted by Taylor and Francis Online.
This paper presents the computational performance of microfluidic channels (MFCs) within a semiconductor detector to monitor changes in the elemental and isotopic composition of a UOX pressurized water reactor used nuclear fuel dissolved in a KCl/LiCl molten salt. The results indicate that the use of MFC limits alpha energy loss sufficiently enough to use energy windowing techniques in spectral analysis. It was found that elemental and isotopic changes as low as 1% may be feasible, with the time to detection (TTD) ranging from seconds to hours. The TTD is inversely dependent on the number of MFCs within the sensor and the activity of the element/isotope undergoing concentration transients.
