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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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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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Latest News
Virginia utility considers SMRs
Dominion Energy Virginia has issued a request for proposals from leading nuclear companies to study the feasibility of putting a small modular reactor at its North Anna nuclear power plant.
While the utility says it is not a commitment to build an SMR at the site, the RFP is “an important first step in evaluating the technology and the North Anna site to support Dominion Energy customers’ future energy needs consistent with the company’s most recent Integrated Resource Plan.”
Ross C. Anderson
Nuclear Technology | Volume 95 | Number 2 | August 1991 | Pages 247-250
Technical Note | Heat Transfer and Fluid Flow | doi.org/10.13182/NT91-A34560
Articles are hosted by Taylor and Francis Online.
Improvements in thermal margin analyses have, in recent years, been dominated by the use of statistical methods to combine the correlation uncertainty with other key uncertainties such as those in temperature, power, or the radial power factor. The methods of combination have included both root-sum-square and Monte Carlo. The latter method provides insight into the probability density function of the composite departure from nucleate boiling ratio, which, for a measured-to-predicted-normal correlation uncertainty and commonly used parameter uncertainties, proves to be skewed slightly upward from normal. In such a case, the assumption of normality is a conservative assumption in licensing analyses.