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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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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
Brent J. Lewis, Dugald B. Duncan, Colin R. Phillips
Nuclear Technology | Volume 77 | Number 3 | June 1987 | Pages 303-312
Technical Paper | Nuclear Fuel | doi.org/10.13182/NT87-A33970
Articles are hosted by Taylor and Francis Online.
Data from a reactor operating with a single defective fuel element were used to develop a physically based model for describing the increased release of iodine to the primary coolant following reactor shutdown. Transport of iodine from the fuel-to-sheath gap of the element to the primary coolant is described by a diffusion process. The model has been used to predict the timing of the increased release.