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Division Spotlight
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.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
R. P. Gardner, R. H. Bean, J. K. Ferrell
Nuclear Technology | Volume 8 | Number 1 | January 1970 | Pages 88-94
Technique | doi.org/10.13182/NT70-A28640
Articles are hosted by Taylor and Francis Online.
Equations are derived to determine the optimum design parameters (minimum error) for the gamma-ray one-shot-collimator method of measuring average void fractions in two-phase flow. A compromise is indicated between the desirability of response linearity cm the one hand and maximum sensitivity on the other. Results from a prototype gauge using the 60-keV gamma rays from 241Am are given for void fractions of extreme distributions within a circular channel and are compared to a previous gauge that used a 170 Tm source.
