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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.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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ACU and Natura expect molten salt research reactor construction permit this fall
Natura Resources, which is supporting the construction of a molten salt research reactor on the campus of Texas’s Abilene Christian University, announced in mid-June that it expects the Nuclear Regulatory Commission to complete its safety assessment and issue a permit for the nonpower test reactor in September.
M. Segev
Nuclear Science and Engineering | Volume 111 | Number 3 | July 1992 | Pages 271-278
Technical Paper | doi.org/10.13182/NSE91-51
Articles are hosted by Taylor and Francis Online.
Reactor cores are modeled as double heterogeneous lattices. The geometrical cross section for such a lattice is given by where Generally, β < 1, and the effect of double heterogeneity is typically of the order of 5 mk, in comparison with single heterogeneity.