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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting Spotlight
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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DOE-NE leadership discuss nuclear in the FY 2025 budget request
Members of the Department of Energy Office of Nuclear Energy leadership team detailed the DOE's fiscal year 2025 Congressional budget request in a webinar hosted last week by the American Nuclear Society. The DOE’s FY 2025 budget request includes nearly $1.6 billion for the Office of Nuclear Energy. The webinar was sponsored by Paragon Energy Solutions; ANS members can view the recording online.
Plamen V. Petkov
Nuclear Science and Engineering | Volume 159 | Number 2 | June 2008 | Pages 221-227
Technical Note | doi.org/10.13182/NSE159-221
Articles are hosted by Taylor and Francis Online.
A statistical method to identify probability density function was previously reported in the literature. Analyses there include constructing a histogram that allows the characteristics of an unknown statistical distribution to be evaluated. Selection of the necessary number of bars, with detailed discussion, is an important issue. As a logical extension of that activity, this paper proposes constructing two sets of symmetrized and nonsymmetrical histograms. Comparing entropies through parameters called entropy coefficients allows the histogram with the optimal number of bars to be found. Additionally, Pearson's criterion is evaluated for verification. Two propositions are formulated in order to generalize the obtained results.This paper presents three cases that summarize the classification, developed after comparing symmetrized and nonsymmetrical histograms, and each case is discussed. Two of the cases demonstrate that symmetrical histograms represent properties of unknown statistical distributions when certain requirements are met. The third case summarizes results from data-trend evaluation, where symmetrization is not appropriate. Conclusions that follow the results are drawn.The presented approach was implemented and tested in a developed set of computer programs for data-trend analysis at the "Kozloduy" nuclear power plant. The source information has been obtained from Units 1 through 4, which are equipped with VVER-440/V230 reactors.