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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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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
NRC cuts fees by 50 percent for advanced reactor applicants
The Nuclear Regulatory Commission has announced it has amended regulations for the licensing, inspection, special projects, and annual fees it will charge applicants and licensees for fiscal year 2025.
C. A. Smith, Frank Rough
Nuclear Science and Engineering | Volume 6 | Number 5 | November 1959 | Pages 391-395
Technical Paper | doi.org/10.13182/NSE59-A25677
Articles are hosted by Taylor and Francis Online.
Specimens of uranium monocarbide of nearly theoretical density were prepared by are melting and casting. Physical property measurements of the unirradiated materials included hardness, density, electrical resistivity, thermal conductivity, linear expansion, modulus of elasticity, and compatibility with NaK and stainless steel. One group of specimens has been irradiated in the MTR to a burnup of 1400 Mwd/ton of uranium. Swelling was found to be in the range of 0.66 to 2.53%. Fission recoil from the surface of the specimens could account for the observed gas release.
