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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
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.