The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod

Since the out-of-pile semi-integral tests performed at Studsvik in 2011 for the NRC [1] and the Halden Loss-Of-Coolant Accident (LOCA) test series IFA-650 [2], a major safety interest has raised for Fuel Fragmentation, Relocation and Dispersal (FFRD) during a LOCA sequence. In addition to the charac...

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Autores principales:	Biard B., Colin C., Bernard S., Marty V., Volle G., Martin F., Charmasson P., Ronné K., Moysan-Lavoine I., Ferrandis J.-Y., Schoepff V., Amoyal G., Fédérici E.
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	nuclear fuel / experimentation / gamma imaging / ffrd / loca / hot lab Physics QC1-999
Acceso en línea:	https://doaj.org/article/be95d56fa250456db65e42488cebf818
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spelling	oai:doaj.org-article:be95d56fa250456db65e42488cebf8182021-12-02T17:12:46ZThe VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod2100-014X10.1051/epjconf/202125306002https://doaj.org/article/be95d56fa250456db65e42488cebf8182021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_06002.pdfhttps://doaj.org/toc/2100-014XSince the out-of-pile semi-integral tests performed at Studsvik in 2011 for the NRC [1] and the Halden Loss-Of-Coolant Accident (LOCA) test series IFA-650 [2], a major safety interest has raised for Fuel Fragmentation, Relocation and Dispersal (FFRD) during a LOCA sequence. In addition to the characteristics of the fuel ejected from the rod after the clad failure, the fuel behaviour before the clad failure is still to be investigated, especially its fragmentation and its possible relocation within the rod during the clad ballooning phase. Furthermore, the chronology and the sequencing of these phenomena is of particular interest. For this purpose, the VINON-LOCA program, lying in the framework of a trilateral agreement between EDF, Framatome and CEA, is aimed at performing Out-Of-Pile heating tests on irradiated repressurized fuel rods, reproducing a typical Loss Of Coolant Accident thermal sequence. The VINON-LOCA experimental set-up is located in the so-called VERDON lab of the LECA-STAR hot cell complex. This lab was dedicated to the VERDON-ISTP program [3]. The VINON-LOCA set-up is thus largely instrumented for addressing not only these FFRD topics, but also Fission Gas Release (FGR), combining both online measurement (gamma stations, gamma camera, acoustic sensor, pressure, temperatures, flow meters, microGC…), and preand post-test characterization (gamma scanning, tomography, metrology, fuel fragments weighing and sieving, gas analyses…). An extensive and substantial qualification campaign has been performed to validate the furnace design regarding the desired test conditions, and to qualify the instrumentation. Following some preliminary modelling and calculations, it has included tests on an out-of-cell twin mockup and tests on dummy inactive rods in the hot cell. This allowed achieving successfully the first experimental qualification test of the program end of 2019 on an irradiated UO2 fuel rodlet. A second irradiated experiment is planned with increased instrumentation capabilities, notably a 2D gamma camera for online fuel motion detection.Biard B.Colin C.Bernard S.Marty V.Volle G.Martin F.Charmasson P.Ronné K.Moysan-Lavoine I.Ferrandis J.-Y.Schoepff V.Amoyal G.Fédérici E.EDP Sciencesarticlenuclear fuel / experimentation / gamma imaging / ffrd / loca / hot labPhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 06002 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	nuclear fuel / experimentation / gamma imaging / ffrd / loca / hot lab Physics QC1-999
spellingShingle	nuclear fuel / experimentation / gamma imaging / ffrd / loca / hot lab Physics QC1-999 Biard B. Colin C. Bernard S. Marty V. Volle G. Martin F. Charmasson P. Ronné K. Moysan-Lavoine I. Ferrandis J.-Y. Schoepff V. Amoyal G. Fédérici E. The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod
description	Since the out-of-pile semi-integral tests performed at Studsvik in 2011 for the NRC [1] and the Halden Loss-Of-Coolant Accident (LOCA) test series IFA-650 [2], a major safety interest has raised for Fuel Fragmentation, Relocation and Dispersal (FFRD) during a LOCA sequence. In addition to the characteristics of the fuel ejected from the rod after the clad failure, the fuel behaviour before the clad failure is still to be investigated, especially its fragmentation and its possible relocation within the rod during the clad ballooning phase. Furthermore, the chronology and the sequencing of these phenomena is of particular interest. For this purpose, the VINON-LOCA program, lying in the framework of a trilateral agreement between EDF, Framatome and CEA, is aimed at performing Out-Of-Pile heating tests on irradiated repressurized fuel rods, reproducing a typical Loss Of Coolant Accident thermal sequence. The VINON-LOCA experimental set-up is located in the so-called VERDON lab of the LECA-STAR hot cell complex. This lab was dedicated to the VERDON-ISTP program [3]. The VINON-LOCA set-up is thus largely instrumented for addressing not only these FFRD topics, but also Fission Gas Release (FGR), combining both online measurement (gamma stations, gamma camera, acoustic sensor, pressure, temperatures, flow meters, microGC…), and preand post-test characterization (gamma scanning, tomography, metrology, fuel fragments weighing and sieving, gas analyses…). An extensive and substantial qualification campaign has been performed to validate the furnace design regarding the desired test conditions, and to qualify the instrumentation. Following some preliminary modelling and calculations, it has included tests on an out-of-cell twin mockup and tests on dummy inactive rods in the hot cell. This allowed achieving successfully the first experimental qualification test of the program end of 2019 on an irradiated UO2 fuel rodlet. A second irradiated experiment is planned with increased instrumentation capabilities, notably a 2D gamma camera for online fuel motion detection.
format	article
author	Biard B. Colin C. Bernard S. Marty V. Volle G. Martin F. Charmasson P. Ronné K. Moysan-Lavoine I. Ferrandis J.-Y. Schoepff V. Amoyal G. Fédérici E.
author_facet	Biard B. Colin C. Bernard S. Marty V. Volle G. Martin F. Charmasson P. Ronné K. Moysan-Lavoine I. Ferrandis J.-Y. Schoepff V. Amoyal G. Fédérici E.
author_sort	Biard B.
title	The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod
title_short	The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod
title_full	The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod
title_fullStr	The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod
title_full_unstemmed	The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod
title_sort	vinon-loca test facility: exploring the loca phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/be95d56fa250456db65e42488cebf818
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The VINON-LOCA test facility: exploring the LOCA phenomenology through an out-of-pile thermal sequence on irradiated pressurized fuel rod

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