Overview of the Tolerance Limit Calculations with Application to TSURFER

To establish confidence in the results of computerized physics models, a key regulatory requirement is to develop a scientifically defendable process. The methods employed for <i>confidence, characterization, and consolidation</i>, or <i>C<sup>3</sup></i>, are sta...

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Autores principales: Hany Abdel-Khalik, Dongli Huang, Ugur Mertyurek, William Marshall, William Wieselquist
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Lenguaje:EN
Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:66ca2c88523c4a7db9afa0e5fe5acd012021-11-11T15:53:25ZOverview of the Tolerance Limit Calculations with Application to TSURFER10.3390/en142170921996-1073https://doaj.org/article/66ca2c88523c4a7db9afa0e5fe5acd012021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7092https://doaj.org/toc/1996-1073To establish confidence in the results of computerized physics models, a key regulatory requirement is to develop a scientifically defendable process. The methods employed for <i>confidence, characterization, and consolidation</i>, or <i>C<sup>3</sup></i>, are statistically involved and are often accessible only to avid statisticians. This manuscript serves as a pedagogical presentation of the <i>C<sup>3</sup></i> process to all stakeholders—including researchers, industrial practitioners, and regulators—to impart an intuitive understanding of the key concepts and mathematical methods entailed by <i>C<sup>3</sup></i>. The primary focus is on calculation of tolerance limits, which is the overall goal of the <i>C<sup>3</sup></i> process. Tolerance limits encode the confidence in the calculation results as communicated to the regulator. Understanding the <i>C<sup>3</sup></i> process is especially critical today, as the nuclear industry is considering more innovative ways to assess new technologies, including new reactor and fuel concepts, via an integrated approach that optimally combines modeling and simulation and minimal targeted validation experiments. This manuscript employs intuitive, analytical, numerical, and visual representations to explain how tolerance limits may be calculated for a wide range of configurations, and it also describes how their values may be interpreted. Various verification tests have been developed to test the calculated tolerance limits and to help delineate their values. The manuscript demonstrates the calculation of tolerance limits for TSURFER, a computer code developed by the Oak Ridge National Laboratory for criticality safety applications. The goal is to evaluate the tolerance limit for TSURFER-determined criticality biases to support the determination of upper, subcritical limits for regulatory purposes.Hany Abdel-KhalikDongli HuangUgur MertyurekWilliam MarshallWilliam WieselquistMDPI AGarticlestatistical tolerance limitsBayesian inferencealeatory and epistemic uncertaintiesTechnologyTENEnergies, Vol 14, Iss 7092, p 7092 (2021)
institution DOAJ
collection DOAJ
language EN
topic statistical tolerance limits
Bayesian inference
aleatory and epistemic uncertainties
Technology
T
spellingShingle statistical tolerance limits
Bayesian inference
aleatory and epistemic uncertainties
Technology
T
Hany Abdel-Khalik
Dongli Huang
Ugur Mertyurek
William Marshall
William Wieselquist
Overview of the Tolerance Limit Calculations with Application to TSURFER
description To establish confidence in the results of computerized physics models, a key regulatory requirement is to develop a scientifically defendable process. The methods employed for <i>confidence, characterization, and consolidation</i>, or <i>C<sup>3</sup></i>, are statistically involved and are often accessible only to avid statisticians. This manuscript serves as a pedagogical presentation of the <i>C<sup>3</sup></i> process to all stakeholders—including researchers, industrial practitioners, and regulators—to impart an intuitive understanding of the key concepts and mathematical methods entailed by <i>C<sup>3</sup></i>. The primary focus is on calculation of tolerance limits, which is the overall goal of the <i>C<sup>3</sup></i> process. Tolerance limits encode the confidence in the calculation results as communicated to the regulator. Understanding the <i>C<sup>3</sup></i> process is especially critical today, as the nuclear industry is considering more innovative ways to assess new technologies, including new reactor and fuel concepts, via an integrated approach that optimally combines modeling and simulation and minimal targeted validation experiments. This manuscript employs intuitive, analytical, numerical, and visual representations to explain how tolerance limits may be calculated for a wide range of configurations, and it also describes how their values may be interpreted. Various verification tests have been developed to test the calculated tolerance limits and to help delineate their values. The manuscript demonstrates the calculation of tolerance limits for TSURFER, a computer code developed by the Oak Ridge National Laboratory for criticality safety applications. The goal is to evaluate the tolerance limit for TSURFER-determined criticality biases to support the determination of upper, subcritical limits for regulatory purposes.
format article
author Hany Abdel-Khalik
Dongli Huang
Ugur Mertyurek
William Marshall
William Wieselquist
author_facet Hany Abdel-Khalik
Dongli Huang
Ugur Mertyurek
William Marshall
William Wieselquist
author_sort Hany Abdel-Khalik
title Overview of the Tolerance Limit Calculations with Application to TSURFER
title_short Overview of the Tolerance Limit Calculations with Application to TSURFER
title_full Overview of the Tolerance Limit Calculations with Application to TSURFER
title_fullStr Overview of the Tolerance Limit Calculations with Application to TSURFER
title_full_unstemmed Overview of the Tolerance Limit Calculations with Application to TSURFER
title_sort overview of the tolerance limit calculations with application to tsurfer
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/66ca2c88523c4a7db9afa0e5fe5acd01
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AT donglihuang overviewofthetolerancelimitcalculationswithapplicationtotsurfer
AT ugurmertyurek overviewofthetolerancelimitcalculationswithapplicationtotsurfer
AT williammarshall overviewofthetolerancelimitcalculationswithapplicationtotsurfer
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