Search Results - "Coindreau, O."

High temperature Zircaloy-4 oxidation in water vapour-containing environments examined with Raman imaging and labelled oxygen by Mermoux, M., Duriez, C., Coindreau, O.

“…•Zircaloy-4 high temperature oxidation was studied in labelled N2–18O2–H216O atmospheres.•18O-tracer distributions in zirconia were analysed on cross sections…”
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Air oxidation of Zircaloy-4 in the 600–1000 °C temperature range: Modeling for ASTEC code application by Coindreau, O., Duriez, C., Ederli, S.

“…Progress in the treatment of air oxidation of zirconium in severe accident (SA) codes are required for a reliable analysis of severe accidents involving air…”
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Main modelling features of the ASTEC V2.1 major version by Chatelard, P., Belon, S., Bosland, L., Carénini, L., Coindreau, O., Cousin, F., Marchetto, C., Nowack, H., Piar, L., Chailan, L.

“…•Recent modelling improvements of the ASTEC European severe accident code are outlined.•Key new physical models now available in the ASTEC V2.1 major version…”
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Experimental study of oxidation in oxygen, nitrogen and steam mixtures at 850∘C of pre-oxidized Zircaloy-4 by Gestin, M., Mermoux, M., Coindreau, O., Duriez, C., Pijolat, M., Peres, V., Favergeon, L.

“…Since the Fukushima Daiichi accident, increased attention is paid to the vulnerability of Spent Fuel Pools (SFPs). In case of an accidental dewatering of the…”
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Modelling of Zircaloy-4 accelerated degradation kinetics in nitrogen–oxygen mixtures at 850°C by Lasserre, M., Peres, V., Pijolat, M., Coindreau, O., Duriez, C., Mardon, J.-P.

“…Zirconium-based alloys used in PWR cladding show an acceleration of their oxidation kinetics in air at high temperature compared to their behaviour under…”
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Oxidation during fuel-coolant interaction: Advances and modeling by Loisel, V., Zambaux, J.-A., Hadj-Achour, M., Picchi, S., Coindreau, O., Meignen, R.

“…•Review oxidation phenomenology in the context of fuel-coolant interaction.•Proposal for models for the configurations of melt drops in vapor and drops in…”
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Zircaloy-4 high temperature oxidation in atmospheres representative of SFP-LOCA: Investigation of the influence of a low temperature pre-oxidation scale by Duriez, C., Coindreau, O., Gestin, M., Kasperski, A., Peres, V., Pijolat, M., Buscail, H., Issartel, C., Rolland, R., Mermoux, M.

“…Within the framework of the French DENOPI project dedicated to the study of Spent Fuel Pool accidents, the high temperature degradation of Zircaloy-4 cladding…”
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Evaluation of an effective diameter to study quenching and dry-out of complex debris bed by Chikhi, N., Coindreau, O., Li, L.X., Ma, W.M., Taivassalo, V., Takasuo, E., Leininger, S., Kulenovic, R., Laurien, E.

“…•The characteristics of in-core debris beds and ex-vessel debris beds are given.•The state of the art of two-phase flow in a high temperature debris bed is…”
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Cladding oxidation during air ingress. Part II: Synthesis of modelling results by Beuzet, E., Haurais, F., Bals, C., Coindreau, O., Fernandez-Moguel, L., Vasiliev, A., Park, S.

“…•A state-of-the-art for air oxidation modelling in the frame of severe accident is done.•Air oxidation models from main severe accident codes are…”
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Severe accident code-to-code comparison for two accident scenarios in a spent fuel pool by Coindreau, O., Jäckel, B., Rocchi, F., Alcaro, F., Angelova, D., Bandini, G., Barnak, M., Behler, M., Da Cruz, D.F., Dagan, R., Drai, P., Ederli, S., Herranz, L.E., Hollands, T., Horvath, G., Kaliatka, A., Kljenak, I., Kotsuba, O., Lind, T., López, C., Mancheva, K., Matejovic, P., Matkovič, M., Steinbrück, M., Stempniewicz, M., Thomas, R., Vileiniskis, V., Visser, D.C., Vokáč, P., Vorobyov, Y., Zhabin, O.

“…•Benchmark of 6 SA codes (14 participants) for two accident scenarios in a Spent Fuel Pool.•Differences in draining velocity induced scattering in the onset of…”
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Pearson random walk algorithms for fiber-scale modeling of Chemical Vapor Infiltration by Vignoles, G.L., Ros, W., Mulat, C., Coindreau, O., Germain, C.

“…[Display omitted] ► The model involves rarefied gas diffusion and reaction and surface growth. ► It applies to large 3D images of fibrous media. ► The code is…”
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Qualitative analysis of Zircaloy-4 cladding air degradation in O2-N2 mixtures at high temperature by Lasserre, M., Peres, V., Pijolat, M., Coindreau, O., Duriez, C., Mardon, J.-P.

“…This article is devoted to the qualitative analysis of the Zircaloy‐4 degradation mechanism at 850 °C in oxygen/nitrogen partial pressure atmospheres…”
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Direct 3D microscale imaging of carbon–carbon composites with computed holotomography by Coindreau, O., Vignoles, G., Cloetens, P.

“…As part of the modelling of chemical vapor infiltration, one of the processing techniques of carbon–carbon composites, a better understanding of the relation…”
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Simulation of the atmospheric concentrations of 210Pb and 7Be and comparison with daily observations at three surface sites by Heinrich, P., Coindreau, O., Grillon, Y., Blanchard, X., Gross, P.

“…The atmospheric transport of 210Pb and 7Be is simulated by the Laboratoire de Météorologie Dynamique general circulation model, LMDz, driven by ECMWF…”
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Uncertainty quantification for severe-accident reactor modelling: Results and conclusions of the MUSA reactor applications work package by Brumm, S., Gabrielli, F., Sanchez Espinoza, V., Stakhanova, A., Groudev, P., Petrova, P., Vryashkova, P., Ou, P., Zhang, W., Malkhasyan, A., Herranz, L.E., Iglesias Ferrer, R., Angelucci, M., Berdaï, M., Mascari, F., Agnello, G., Sevbo, O., Iskra, A., Martinez Quiroga, V., Nudi, M., Hoefer, A., Pauli, E.-M., Beck, S., Tiborcz, L., Coindreau, O., Clark, G., Lamont, I., Zheng, X., Kubo, K., Lee, B., Valincius, M., Malicki, M., Lind, T., Vorobyov, Y., Kotsuba, O., Di Giuli, M., Ivanov, I., D’Onorio, M., Giannetti, F., Sevon, T.

“…•Challenges of BEPU method in Severe Accident modelling are explored.•Uncertainty analysis broadens the understanding of Severe Accident sequences•Applications…”
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Uncertainty quantification for a severe accident sequence in a SFP in the frame of the H-2020 project MUSA: First outcomes by Coindreau, O., Herranz, L.E., Bocanegra, R., Ederli, S., Maccari, P., Mascari, F., Cherednichenko, O., Iskra, A., Groudev, P., Vryashkova, P., Petrova, P., Kaliatka, A., Vileiniškis, V., Malicki, M., Lind, T., Kotsuba, O., Ivanov, I., Giannetti, F., D'Onorio, M., Ou, P., Feiye, L., Piluso, P., Pontillon, Y., Nudi, M.

“…The Management and Uncertainties of Severe Accidents (MUSA) project, funded in HORIZON 2020 and coordinated by CIEMAT (Spain), aims at consolidating a…”
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Main outcomes of the Phebus FPT1 uncertainty and sensitivity analysis in the EU-MUSA project by Mascari, F., Bersano, A., Massone, M., Agnello, G., Coindreau, O., Beck, S., Tiborcz, L., Paci, S., Angelucci, M., Herranz, L.E., Bocanegra, R., Pontillon, Y., Berdai, M., Cherednichenko, O., Iskra, A., Nudi, M., Groudev, P., Petrova, P., Kretzschmar, F., Gabrielli, F., Kanglong, Z., Vileiniškis, V., Kaliatka, T., Kalilainen, J., Malicki, M., Gumenyuk, D., Vorobyov, Y., Kotsuba, O., Dejardin, P., Di Giuli, M., Thomas, R., Ivanov, I.V., Giannetti, F., D'Onorio, M., Caruso, G., Salay, M., Sevon, T.

“…The Management and Uncertainties of Severe Accidents (MUSA) project was funded in HORIZON 2020 and is coordinated by CIEMAT (Spain). The project aims at…”
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Nuclear fuel rod fragmentation under accidental conditions by Coindreau, Olivia, Fichot, Florian, Fleurot, Joëlle

“…► Fuel rods can be fragmented in case of reflooding during a core meltdown accident. ► The core coolability strongly depends on the extent of fuel rod…”
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Qualitative analysis of Zircaloy‐4 cladding air degradation in O 2 –N 2 mixtures at high temperature by Lasserre, M., Peres, V., Pijolat, M., Coindreau, O., Duriez, C., Mardon, J.‐P.

“…This article is devoted to the qualitative analysis of the Zircaloy‐4 degradation mechanism at 850 °C in oxygen/nitrogen partial pressure atmospheres…”
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Assessment of Geometrical and Transport Properties of a Fibrous C/C Composite Preform Using x-ray Computerized Micro-tomography: Part I. Image Acquisition and Geometrical Properties by Coindreau, Olivia, Vignoles, Gérard L.

“…Raw and partially infiltrated carbon–carbon composite preforms have been scanned by high-resolution synchrotron radiation x-ray computerized micro-tomography…”
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