Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient

[EN] Scaling methodologies quantitatively assess the behavioral differences between small-scale experimental systems and full-size commercial plants during specific accidental scenarios. These methods guide the design and operation of experimental facilities to reliably replicate larger systems, ens...

ver descrição completa

Detalhes bibliográficos
Autores: Berna-Escriche, César|||0000-0002-2097-5089, Blanco-Muelas, David|||0000-0003-2958-0558, J. L. Muñoz-Cobo|||0000-0002-4512-7991, Álvarez-Piñeiro, Lucas|||0000-0002-9450-2479, Escrivá, A.|||0000-0002-9670-068X
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:dnet:riunet______::4e1d4e258dc1042368526f3acbac1962
Acesso em linha:https://riunet.upv.es/handle/10251/235013
Access Level:acceso abierto
Palavra-chave:Thermal-hydraulics
FSA methodology
Normalized scalability
Scaling distortion
Phenomena importance
SBLOCA
ROSA 1.2 test
id ES_0b8222e75e4e6389d4ac7e002e65df7f
oai_identifier_str oai:dnet:riunet______::4e1d4e258dc1042368526f3acbac1962
network_acronym_str ES
network_name_str España
repository_id_str
spelling Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transientBerna-Escriche, César|||0000-0002-2097-5089Blanco-Muelas, David|||0000-0003-2958-0558J. L. Muñoz-Cobo|||0000-0002-4512-7991Álvarez-Piñeiro, Lucas|||0000-0002-9450-2479Escrivá, A.|||0000-0002-9670-068XThermal-hydraulicsFSA methodologyNormalized scalabilityScaling distortionPhenomena importanceSBLOCAROSA 1.2 test[EN] Scaling methodologies quantitatively assess the behavioral differences between small-scale experimental systems and full-size commercial plants during specific accidental scenarios. These methods guide the design and operation of experimental facilities to reliably replicate larger systems, ensuring safety systems are developed and accident sequences predicted accurately. Early integration of scaling calculations into the experimental design phase allows for reliable extrapolation of results to commercial plants. This study applied Fractional Scaling Analysis (FSA) to compare a scaled LSTF experimental facility and a full-size Siemens-KWU reactor during a Small Break LOCA in the hot leg (ROSA 1.2 test). The transient was divided into five phases, each analyzed for thermal-hydraulic similarity. Despite minor scaling distortions, the results showed strong consistency in pressure and level evolution, confirming good scalability between the facilities for this scenario. FSA demonstrated its versatility, allowing data from one type of facility (e.g., Westinghouse-type) to inform analyses for plants of a different type (e.g., Siemens-KWU). A new method provided a "normalized scalability" metric for the entire transient, with figures of merit for pressure and level reaching similar to 0.3 (far below 1), indicating good scalability. Non-conservative distortions were minimal (<0.16), enabling quantitative comparisons across plants and transients for enhanced safety and design validation.This paper was supported by the CSN, Nuclear Regulatory Commission of Spain under the THAIS project.ElsevierDepartamento de Ingeniería Química y NuclearDepartamento de Estadística e Investigación Operativa Aplicadas y CalidadInstituto Universitario de Investigación de Ingeniería EnergéticaEscuela Técnica Superior de Ingeniería IndustrialEscuela Técnica Superior de Ingeniería InformáticaConsejo de Seguridad NuclearRepositorio Institucional de la Universitat Politècnica de València Riunet20252025-10-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/235013reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:dnet:riunet______::4e1d4e258dc1042368526f3acbac19622026-06-13T07:49:27Z
dc.title.none.fl_str_mv Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient
title Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient
spellingShingle Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient
Berna-Escriche, César|||0000-0002-2097-5089
Thermal-hydraulics
FSA methodology
Normalized scalability
Scaling distortion
Phenomena importance
SBLOCA
ROSA 1.2 test
title_short Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient
title_full Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient
title_fullStr Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient
title_full_unstemmed Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient
title_sort Fractional Scaling Analysis - Methodology application to LSTF facility and a PWR for a small break LOCA transient
dc.creator.none.fl_str_mv Berna-Escriche, César|||0000-0002-2097-5089
Blanco-Muelas, David|||0000-0003-2958-0558
J. L. Muñoz-Cobo|||0000-0002-4512-7991
Álvarez-Piñeiro, Lucas|||0000-0002-9450-2479
Escrivá, A.|||0000-0002-9670-068X
author Berna-Escriche, César|||0000-0002-2097-5089
author_facet Berna-Escriche, César|||0000-0002-2097-5089
Blanco-Muelas, David|||0000-0003-2958-0558
J. L. Muñoz-Cobo|||0000-0002-4512-7991
Álvarez-Piñeiro, Lucas|||0000-0002-9450-2479
Escrivá, A.|||0000-0002-9670-068X
author_role author
author2 Blanco-Muelas, David|||0000-0003-2958-0558
J. L. Muñoz-Cobo|||0000-0002-4512-7991
Álvarez-Piñeiro, Lucas|||0000-0002-9450-2479
Escrivá, A.|||0000-0002-9670-068X
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Química y Nuclear
Departamento de Estadística e Investigación Operativa Aplicadas y Calidad
Instituto Universitario de Investigación de Ingeniería Energética
Escuela Técnica Superior de Ingeniería Industrial
Escuela Técnica Superior de Ingeniería Informática
Consejo de Seguridad Nuclear
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Thermal-hydraulics
FSA methodology
Normalized scalability
Scaling distortion
Phenomena importance
SBLOCA
ROSA 1.2 test
topic Thermal-hydraulics
FSA methodology
Normalized scalability
Scaling distortion
Phenomena importance
SBLOCA
ROSA 1.2 test
description [EN] Scaling methodologies quantitatively assess the behavioral differences between small-scale experimental systems and full-size commercial plants during specific accidental scenarios. These methods guide the design and operation of experimental facilities to reliably replicate larger systems, ensuring safety systems are developed and accident sequences predicted accurately. Early integration of scaling calculations into the experimental design phase allows for reliable extrapolation of results to commercial plants. This study applied Fractional Scaling Analysis (FSA) to compare a scaled LSTF experimental facility and a full-size Siemens-KWU reactor during a Small Break LOCA in the hot leg (ROSA 1.2 test). The transient was divided into five phases, each analyzed for thermal-hydraulic similarity. Despite minor scaling distortions, the results showed strong consistency in pressure and level evolution, confirming good scalability between the facilities for this scenario. FSA demonstrated its versatility, allowing data from one type of facility (e.g., Westinghouse-type) to inform analyses for plants of a different type (e.g., Siemens-KWU). A new method provided a "normalized scalability" metric for the entire transient, with figures of merit for pressure and level reaching similar to 0.3 (far below 1), indicating good scalability. Non-conservative distortions were minimal (<0.16), enabling quantitative comparisons across plants and transients for enhanced safety and design validation.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-10-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/235013
url https://riunet.upv.es/handle/10251/235013
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869403230412210176
score 15,812455

Registos relacionados