Overview of the VERDON-ISTP Program and main insights from the VERDON-2 air ingress test
| العنوان: | Overview of the VERDON-ISTP Program and main insights from the VERDON-2 air ingress test |
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| المؤلفون: | S. Bernard, E. Hanus, J. Bonnin, A. Gallais-During, B. Gleizes, P.-P. Malgouyres, S. Morin, G. Ducros, Y. Pontillon |
| المساهمون: | CEA-Direction de l'Energie Nucléaire (CEA-DEN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), AGroécologie, Innovations, teRritoires (AGIR), Institut National de la Recherche Agronomique (INRA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Laboratoire d'Analyse de la Migration des Radioéléments (LAMIR), Service d'Analyses, d'Elaboration, d'Expérientations et d'Examens des combustibles (SA3E), Département d'Etudes des Combustibles (DEC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction de l'Energie Nucléaire (CEA-DEN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département d'Etudes des Combustibles (DEC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre de formation et de recherche sur l'environnement marin (CEFREM), Université de Perpignan Via Domitia (UPVD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Réseaux épuration et qualité des eaux (UR REBX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Université de Toulouse (UT)-Université de Toulouse (UT) |
| المصدر: | Annals of Nuclear Energy Annals of Nuclear Energy, Elsevier Masson, 2017, 101, pp.109-117. ⟨10.1016/j.anucene.2016.09.045⟩ Annals of Nuclear Energy, 2017, 101, pp.109-117. ⟨10.1016/j.anucene.2016.09.045⟩ |
| بيانات النشر: | HAL CCSD, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Fission products, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 020209 energy, Nuclear engineering, Uranium dioxide, Radioactive waste, 02 engineering and technology, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Solid fuel, ISTP, 7. Clean energy, 01 natural sciences, 010305 fluids & plasmas, chemistry.chemical_compound, Nuclear Energy and Engineering, chemistry, 13. Climate action, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Environmental science, Energy source, MOX fuel, Burnup |
| الوصف: | International audience; In order to reduce the uncertainties concerning source term assessment under LWR severe accident conditions, the International Source Term Program has been launched. Four main R&D research axes have been addressed in this program: iodine behaviour in the RCS and containment, study of the boron carbide effect on fuel degradation and FP release, study of the air effect on fuel and FP behaviour, FP release from high burn-up UO2 and MOX fuels.As far as the source term quantification is concerned, four VERDON tests have been defined and were performed in the VERDON laboratory at the CEA Cadarache Centre. We present an overview of these four tests, devoted to the study of FP release from high burn-up UO2 and MOX fuels. We focus on the VERDON-2 air ingress test performed on MOX fuel with a specific loop dedicated to FP release and transport. It addressed two issues: Ru release under mixed steam-air conditions following lower head failure and transport/re-volatilization of Ru and volatile FPs in the primary circuit. The latter was performed thanks to the implementation of thermal gradient tubes exposed at different phases of the sequence. In this configuration, the VERDON facility combines the ability of the analytical approach to identify and understand the physical phenomena involved, with a semi-integral approach, which allows the results to be applied to source term assessments for reactor application. This VERDON-2 test has shown a rather unexpected low release of ruthenium from the MOX sample and no re-volatilization from the thermal gradient tubes. On the contrary, a significant re-volatilization of iodine has been observed when switching to mixed steam-air conditions, as well as a low, but measurable amount of iodine transported under gaseous form downstream of the thermal gradient tubes. |
| اللغة: | English |
| تدمد: | 0306-4549 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b7e3c4bf55a3175fdaa6ec5126f8402 https://hal-cea.archives-ouvertes.fr/cea-02380827 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....7b7e3c4bf55a3175fdaa6ec5126f8402 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 03064549 |
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