Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assemblies

This study proposes a framework to develop a model for estimating burnup (BU), initial enrichment (IE), and cooling time (CT) of spent nuclear fuel (SNF) overcoming the limitations of existing models in determining IE. Database (DB) of gamma-ray sources for PWR SNF was generated using ORIGAMI. Targe...

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Main Authors: Sang Hyeok Lee, Jae Hak Cheong
Format: Article
Language:English
Published: Elsevier 2025-02-01
Series:Nuclear Engineering and Technology
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1738573324004716
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author Sang Hyeok Lee
Jae Hak Cheong
author_facet Sang Hyeok Lee
Jae Hak Cheong
author_sort Sang Hyeok Lee
collection DOAJ
description This study proposes a framework to develop a model for estimating burnup (BU), initial enrichment (IE), and cooling time (CT) of spent nuclear fuel (SNF) overcoming the limitations of existing models in determining IE. Database (DB) of gamma-ray sources for PWR SNF was generated using ORIGAMI. Target gamma radionuclides were selected based on the ease and credibility of measurement. The concept of Product of Powers of Radioactivity (PPR) was suggested, and PPRs for modeling were selected through evaluation of all possible PPRs. Functions established for PPRs were applied to estimate BU, IE, and CT (BIC) of PWR SNF assemblies. Optimized PPR combinations for estimating BU, IE, and CT respectively, as well as three variables simultaneously with the highest accuracy, were suggested. The estimation model proposed in this study enhanced IE estimations, maintaining the reliability of BU and CT estimations. The above framework enables construction of intuitive BIC estimation models using only a small amount of data. This can help hasten the development of estimation models for SNF from various reactor types. Consequently, it is expected to contribute to the safety and safeguards of SNF management by improving the verification that SNF meets acceptance criteria and conforms to the declared information.
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spelling doaj-art-507884740fe849a68a77d9abd0d11df22025-01-31T05:11:10ZengElsevierNuclear Engineering and Technology1738-57332025-02-01572103222Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assembliesSang Hyeok Lee0Jae Hak Cheong1Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggido, 17104, Republic of KoreaCorresponding author.; Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggido, 17104, Republic of KoreaThis study proposes a framework to develop a model for estimating burnup (BU), initial enrichment (IE), and cooling time (CT) of spent nuclear fuel (SNF) overcoming the limitations of existing models in determining IE. Database (DB) of gamma-ray sources for PWR SNF was generated using ORIGAMI. Target gamma radionuclides were selected based on the ease and credibility of measurement. The concept of Product of Powers of Radioactivity (PPR) was suggested, and PPRs for modeling were selected through evaluation of all possible PPRs. Functions established for PPRs were applied to estimate BU, IE, and CT (BIC) of PWR SNF assemblies. Optimized PPR combinations for estimating BU, IE, and CT respectively, as well as three variables simultaneously with the highest accuracy, were suggested. The estimation model proposed in this study enhanced IE estimations, maintaining the reliability of BU and CT estimations. The above framework enables construction of intuitive BIC estimation models using only a small amount of data. This can help hasten the development of estimation models for SNF from various reactor types. Consequently, it is expected to contribute to the safety and safeguards of SNF management by improving the verification that SNF meets acceptance criteria and conforms to the declared information.http://www.sciencedirect.com/science/article/pii/S1738573324004716Spent nuclear fuelNon-destructive analysisBurnupInitial enrichmentCooling timeSafety
spellingShingle Sang Hyeok Lee
Jae Hak Cheong
Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assemblies
Nuclear Engineering and Technology
Spent nuclear fuel
Non-destructive analysis
Burnup
Initial enrichment
Cooling time
Safety
title Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assemblies
title_full Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assemblies
title_fullStr Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assemblies
title_full_unstemmed Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assemblies
title_short Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assemblies
title_sort enhanced formula based method to estimate burnup initial enrichment and cooling time using limited gamma ray source data of reference pwr spent nuclear fuel assemblies
topic Spent nuclear fuel
Non-destructive analysis
Burnup
Initial enrichment
Cooling time
Safety
url http://www.sciencedirect.com/science/article/pii/S1738573324004716
work_keys_str_mv AT sanghyeoklee enhancedformulabasedmethodtoestimateburnupinitialenrichmentandcoolingtimeusinglimitedgammaraysourcedataofreferencepwrspentnuclearfuelassemblies
AT jaehakcheong enhancedformulabasedmethodtoestimateburnupinitialenrichmentandcoolingtimeusinglimitedgammaraysourcedataofreferencepwrspentnuclearfuelassemblies