Some Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations

Specific research reactors are capable of reproducing reactivity injection accidents in order to study the behavior of the nuclear fuel pins in accidental situations. In the CABRI research reactor, the fuel pin to be examined (test pin) is placed in the center of the core in a dedicated test loop. I...

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Autores principales:	Bartos Julia, Gruel Adrien, Vaglio-Gaudard Claire, Coquelet-Pascal Christine
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	energy deposition cabri ria monte carlo calculations tripoli4 Physics QC1-999
Acceso en línea:	https://doaj.org/article/d8db64468dec4da98838f8ff44f21c3f
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id	oai:doaj.org-article:d8db64468dec4da98838f8ff44f21c3f
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spelling	oai:doaj.org-article:d8db64468dec4da98838f8ff44f21c3f2021-12-02T17:12:45ZSome Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations2100-014X10.1051/epjconf/202125304005https://doaj.org/article/d8db64468dec4da98838f8ff44f21c3f2021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_04005.pdfhttps://doaj.org/toc/2100-014XSpecific research reactors are capable of reproducing reactivity injection accidents in order to study the behavior of the nuclear fuel pins in accidental situations. In the CABRI research reactor, the fuel pin to be examined (test pin) is placed in the center of the core in a dedicated test loop. It is then subjected to a power transient, obtained by the fast depressurization of the 3He neutron absorber gas from the transient rods located in the core. One of the central parameters of the experiment is the energy deposition in the test pin, which is currently not measured during a transient. Instead, it is assumed that the relative energy distribution between the core and the test pin is constant regardless the operational state of the reactor. Currently, this correlation is measured in steady state. As such, the impact of the variations in the neutron flux, fuel and moderator temperatures during the transient is assumed equivalent on the energy deposition in the core and in the test pin. The goal of this work is to improve our knowledge on the mechanisms involved in the transient energy deposition. The aim of this paper is to present a methodological approach for the energy deposition estimation during a CABRI transient, based on static Monte Carlo calculations. The results suggest that the transient energy deposition rate is mainly dependent on the helium pressure and the Doppler feedback, and the relative energy distribution between the core and test pin changes during the transient.Bartos JuliaGruel AdrienVaglio-Gaudard ClaireCoquelet-Pascal ChristineEDP Sciencesarticleenergy depositioncabririamonte carlo calculationstripoli4PhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 04005 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	energy deposition cabri ria monte carlo calculations tripoli4 Physics QC1-999
spellingShingle	energy deposition cabri ria monte carlo calculations tripoli4 Physics QC1-999 Bartos Julia Gruel Adrien Vaglio-Gaudard Claire Coquelet-Pascal Christine Some Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations
description	Specific research reactors are capable of reproducing reactivity injection accidents in order to study the behavior of the nuclear fuel pins in accidental situations. In the CABRI research reactor, the fuel pin to be examined (test pin) is placed in the center of the core in a dedicated test loop. It is then subjected to a power transient, obtained by the fast depressurization of the 3He neutron absorber gas from the transient rods located in the core. One of the central parameters of the experiment is the energy deposition in the test pin, which is currently not measured during a transient. Instead, it is assumed that the relative energy distribution between the core and the test pin is constant regardless the operational state of the reactor. Currently, this correlation is measured in steady state. As such, the impact of the variations in the neutron flux, fuel and moderator temperatures during the transient is assumed equivalent on the energy deposition in the core and in the test pin. The goal of this work is to improve our knowledge on the mechanisms involved in the transient energy deposition. The aim of this paper is to present a methodological approach for the energy deposition estimation during a CABRI transient, based on static Monte Carlo calculations. The results suggest that the transient energy deposition rate is mainly dependent on the helium pressure and the Doppler feedback, and the relative energy distribution between the core and test pin changes during the transient.
format	article
author	Bartos Julia Gruel Adrien Vaglio-Gaudard Claire Coquelet-Pascal Christine
author_facet	Bartos Julia Gruel Adrien Vaglio-Gaudard Claire Coquelet-Pascal Christine
author_sort	Bartos Julia
title	Some Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations
title_short	Some Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations
title_full	Some Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations
title_fullStr	Some Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations
title_full_unstemmed	Some Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations
title_sort	some considerations on the energy deposition during a ria transient based on monte carlo simulations
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/d8db64468dec4da98838f8ff44f21c3f
work_keys_str_mv	AT bartosjulia someconsiderationsontheenergydepositionduringariatransientbasedonmontecarlosimulations AT grueladrien someconsiderationsontheenergydepositionduringariatransientbasedonmontecarlosimulations AT vagliogaudardclaire someconsiderationsontheenergydepositionduringariatransientbasedonmontecarlosimulations AT coqueletpascalchristine someconsiderationsontheenergydepositionduringariatransientbasedonmontecarlosimulations
_version_	1718381409983266816

Some Considerations on the Energy Deposition During a RIA Transient Based On Monte Carlo Simulations

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