Negative power coefficient on PHWRs with CARA fuel

Autores
Lestani, Hector Arturo; Gonzalez, Jose Hector; Florido, Pablo Carlos
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A study of power coefficient of reactivity in heavy water reactors is made analyzing the reactivity components of fuels with several modifications oriented at reducing the coefficient. A cell model is used for neutronics calculations; a non-linear two dimensional model is used to evaluate the thermal changes that follow a power change; and a levelized unit energy cost model is used to assess the economical feasibility of the design changes introduced to reduce power coefficient. The necessity of modelling all the aforementioned quantities in a coupled scheme is stressed, as a strong interdependence was found. A series of design changes complied with a negative power coefficient of reactivity, with a feasible power radial distribution and with low refuelling cost. Some investigation lines that exceed the fuel cell study and deal with the plant operation are marked as potentially addressing the stable operation of big heavy water reactors.
Fil: Lestani, Hector Arturo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gonzalez, Jose Hector. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Invap S. E.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Florido, Pablo Carlos. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Materia
Power Coefficient
Phwr
Cara Fuel
Passive Safety
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/32479
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Negative power coefficient on PHWRs with CARA fuelLestani, Hector ArturoGonzalez, Jose HectorFlorido, Pablo CarlosPower CoefficientPhwrCara FuelPassive Safetyhttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2A study of power coefficient of reactivity in heavy water reactors is made analyzing the reactivity components of fuels with several modifications oriented at reducing the coefficient. A cell model is used for neutronics calculations; a non-linear two dimensional model is used to evaluate the thermal changes that follow a power change; and a levelized unit energy cost model is used to assess the economical feasibility of the design changes introduced to reduce power coefficient. The necessity of modelling all the aforementioned quantities in a coupled scheme is stressed, as a strong interdependence was found. A series of design changes complied with a negative power coefficient of reactivity, with a feasible power radial distribution and with low refuelling cost. Some investigation lines that exceed the fuel cell study and deal with the plant operation are marked as potentially addressing the stable operation of big heavy water reactors.Fil: Lestani, Hector Arturo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gonzalez, Jose Hector. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Invap S. E.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Florido, Pablo Carlos. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaElsevier Science2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32479Gonzalez, Jose Hector; Lestani, Hector Arturo; Florido, Pablo Carlos; Negative power coefficient on PHWRs with CARA fuel; Elsevier Science; Nuclear Engineering and Design; 270; 2-2014; 185-1970029-5493CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.nucengdes.2013.12.056info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0029549314000326info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:17:11Zoai:ri.conicet.gov.ar:11336/32479instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:17:12.04CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Negative power coefficient on PHWRs with CARA fuel
title Negative power coefficient on PHWRs with CARA fuel
spellingShingle Negative power coefficient on PHWRs with CARA fuel
Lestani, Hector Arturo
Power Coefficient
Phwr
Cara Fuel
Passive Safety
title_short Negative power coefficient on PHWRs with CARA fuel
title_full Negative power coefficient on PHWRs with CARA fuel
title_fullStr Negative power coefficient on PHWRs with CARA fuel
title_full_unstemmed Negative power coefficient on PHWRs with CARA fuel
title_sort Negative power coefficient on PHWRs with CARA fuel
dc.creator.none.fl_str_mv Lestani, Hector Arturo
Gonzalez, Jose Hector
Florido, Pablo Carlos
author Lestani, Hector Arturo
author_facet Lestani, Hector Arturo
Gonzalez, Jose Hector
Florido, Pablo Carlos
author_role author
author2 Gonzalez, Jose Hector
Florido, Pablo Carlos
author2_role author
author
dc.subject.none.fl_str_mv Power Coefficient
Phwr
Cara Fuel
Passive Safety
topic Power Coefficient
Phwr
Cara Fuel
Passive Safety
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.3
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv A study of power coefficient of reactivity in heavy water reactors is made analyzing the reactivity components of fuels with several modifications oriented at reducing the coefficient. A cell model is used for neutronics calculations; a non-linear two dimensional model is used to evaluate the thermal changes that follow a power change; and a levelized unit energy cost model is used to assess the economical feasibility of the design changes introduced to reduce power coefficient. The necessity of modelling all the aforementioned quantities in a coupled scheme is stressed, as a strong interdependence was found. A series of design changes complied with a negative power coefficient of reactivity, with a feasible power radial distribution and with low refuelling cost. Some investigation lines that exceed the fuel cell study and deal with the plant operation are marked as potentially addressing the stable operation of big heavy water reactors.
Fil: Lestani, Hector Arturo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gonzalez, Jose Hector. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Invap S. E.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Florido, Pablo Carlos. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
description A study of power coefficient of reactivity in heavy water reactors is made analyzing the reactivity components of fuels with several modifications oriented at reducing the coefficient. A cell model is used for neutronics calculations; a non-linear two dimensional model is used to evaluate the thermal changes that follow a power change; and a levelized unit energy cost model is used to assess the economical feasibility of the design changes introduced to reduce power coefficient. The necessity of modelling all the aforementioned quantities in a coupled scheme is stressed, as a strong interdependence was found. A series of design changes complied with a negative power coefficient of reactivity, with a feasible power radial distribution and with low refuelling cost. Some investigation lines that exceed the fuel cell study and deal with the plant operation are marked as potentially addressing the stable operation of big heavy water reactors.
publishDate 2014
dc.date.none.fl_str_mv 2014-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/32479
Gonzalez, Jose Hector; Lestani, Hector Arturo; Florido, Pablo Carlos; Negative power coefficient on PHWRs with CARA fuel; Elsevier Science; Nuclear Engineering and Design; 270; 2-2014; 185-197
0029-5493
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32479
identifier_str_mv Gonzalez, Jose Hector; Lestani, Hector Arturo; Florido, Pablo Carlos; Negative power coefficient on PHWRs with CARA fuel; Elsevier Science; Nuclear Engineering and Design; 270; 2-2014; 185-197
0029-5493
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.nucengdes.2013.12.056
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0029549314000326
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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