Search Results - "Journeau, C"

Study of the ablation consecutive to jet impingement on a meltable solid – Application to SFR core-catcher by Lecoanet, A., Payot, F., Journeau, C., Rimbert, N., Gradeck, M.

“…•Determination of a new experimental correlation for assessing the ablation rate in the jet axis in the first ablation regime.•The succession of two ablation…”
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Classification of ablation mode during impact of hot liquid jet on a solid by Lecoanet, A., Payot, F., Journeau, C., Rimbert, N., Gradeck, M.

“…•We find that the cavity shape is stable with time as long as no coherent liquid sheet occurs.•We also identified the evolution of cavity shape as a function…”
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Experiences from the cutting of metallic blocks from simulant Fukushima Daiichi fuel debris by Journeau, C., Molina, D., Brackx, E., Berlemont, R., Tsubota, Y.

“…CEA has manufactured a series of Fukushima Daiichi fuel debris simulants, either with depleted uranium oxide or with hafnium oxide as a surrogate of UO 2 . In…”
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Characterization of chemical composition and particle size distribution of aerosols released during laser cutting of fuel debris simulants by Dazon, C., Porcheron, E., Journeau, C., Suteau, C., Chagnot, C., Doyen, I., Excoffier, E., Roulet, D.

“…[Display omitted] •Original data on the characterization of surrogate radioactive airborne particles.•Smaller particles have non negligible…”
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Detection, Classification, and Location of Seismovolcanic Signals with Multicomponent Seismic Data: Example from the Piton de La Fournaise Volcano (La Réunion, France) by Journeau, C., Shapiro, N. M., Seydoux, L., Soubestre, J., Ferrazzini, V., Peltier, A.

“…We apply three different methods based on the analysis of the multicomponent seismic data to detect seismovolcanic tremors and other seismovolcanic signals, to…”
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Eutectic crystallization in the UO2–Al2O3–HfO2 ceramic phase diagram by Plevacova, K., Journeau, C., Piluso, P., Poirier, J.

“…In the frame of the Generation IV Sodium Fast Reactor (SFR) safety studies, a core catcher with a sacrificial material could be placed at the bottom of the…”
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Fast High-Energy X-Ray Imaging for Severe Accidents Experiments on the Future PLINIUS-2 Platform by Berge, L., Estre, N., Tisseur, D., Payan, E., Eck, D., Bouyer, V., Cassiaut-Louis, N., Journeau, C., Le Tellier, R., Singh, S., Pluyette, E.

“…The future PLINIUS-2 platform of the Commissariat à l'Énergie Atomique (CEA) of Cadarache will be dedicated to the study of corium interactions in severe…”
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Recent severe accident research synthesis of the major outcomes from the SARNET network by Van Dorsselaere, J.-P., Auvinen, A., Beraha, D., Chatelard, P., Herranz, L.E., Journeau, C., Klein-Hessling, W., Kljenak, I., Miassoedov, A., Paci, S., Zeyen, R.

“…•SARNET network of excellence integration mid-2013 in the NUGENIA Association.•Progress of knowledge on corium behaviour, hydrogen explosion and source…”
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Remote monitoring of Molten Core-Concrete Interaction experiment with Optical Fibre Sensors & perspectives to improve nuclear safety – DISCOMS project by Maurin, L., Ferdinand, P., Bouyer, V., Denoix, A., Jouvin, G., Rougeault, S., Journeau, C., Molina, D., Tena, P., Ouerdane, Y.

“…The DISCOMS project (Distributed Sensing for Corium Monitoring and Safety) aimed at providing innovative solutions not requiring local electrical power…”
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Towards an European consensus on possible causes of MCCI ablation anisotropy in an oxidic pool by Cranga, M., Spengler, C., Atkhen, K., Fargette, A., Fischer, M., Foit, J., Gencheva, R., Guyez, E., Haquet, J.F., Journeau, C., Michel, B., Mun, C., Piluso, P., Sevon, T., Spindler, B.

“…•Major phenomena determining the 2D ablation during MCCI are identified.•The overall heat transfer coefficient to pool interfaces deduced from MCCI experiments…”
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Fast high-energy X-ray imaging for Severe Accidents experiments on the future PLINIUS-2 platform by Berge, L., Estre, N., Tisseur, D., Payan, E., Eck, D., Bouyer, V., Cassiaut-Louis, N., Journeau, C., Tellier, R.Le, Pluyette, E.

“…The future PLINIUS-2 platform of CEA Cadarache will be dedicated to the study of corium interactions in severe nuclear accidents, and will host innovative…”
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Zirconium carbide coating for corium experiments related to water-cooled and sodium-cooled reactors by Plevacova, K., Journeau, C., Piluso, P., Zhdanov, V., Baklanov, V., Poirier, J.

“…Since the TMI and Chernobyl accidents the risk of nuclear severe accident is intensively studied for existing and future reactors. In case of a core melt-down…”
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Synthesis of the safety studies carried out on the GFR2400 by Bertrand, F., Bassi, C., Bentivoglio, F., Audubert, F., Guéneau, C., Rimpault, G., Journeau, C.

“…[Display omitted] ► Insights from accident studies and PSA have consolidated GFR2400 design. ► Safety margins are adequate for design basis accidents. ► Core…”
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Quality improvements of thermodynamic data applied to corium interactions for severe accident modelling in SARNET2 by Bakardjieva, S., Barrachin, M., Bechta, S., Bezdicka, P., Bottomley, D., Brissonneau, L., Cheynet, B., Dugne, O., Fischer, E., Fischer, M., Gusarov, V., Journeau, C., Khabensky, V., Kiselova, M., Manara, D., Piluso, P., Sheindlin, M., Tyrpekl, V., Wiss, T.

“…•MCCI research in SARNET2 consisted of large & small-scale testing & modelling.•Heavy (U,Zr)O2 melt interacts with light concrete oxide to produce multiple,…”
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Ranking of severe accident research priorities by Schwinges, B., Journeau, C., Haste, T., Meyer, L., Tromm, W., Trambauer, K.

“…The objectives of the SARNET network are to define common research programmes in the field of severe accidents and to develop common computer tools and…”
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Improvement of the European thermodynamic database NUCLEA by Bakardjieva, S., Barrachin, M., Bechta, S., Bottomley, D., Brissoneau, L., Cheynet, B., Fischer, E., Journeau, C., Kiselova, M., Mezentseva, L., Piluso, P., Wiss, T.

“…Modelling of corium behaviour during a severe accident requires knowledge of the phases present at equilibrium for a given corium composition, temperature and…”
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Severe accident research in the core degradation area: An example of effective international cooperation between the European Union (EU) and the Commonwealth of Independent States (CIS) by the International Science and Technology Center by Bottomley, D., Stuckert, J., Hofmann, P., Tocheny, L., Hugon, M., Journeau, C., Clément, B., Weber, S., Guentay, S., Hozer, Z., Herranz, L., Schumm, A., Oriolo, F., Altstadt, E., Krause, M., Fischer, M., Khabensky, V.B., Bechta, S.V., Veshchunov, M.S., Palagin, A.V., Kiselev, A.E., Nalivaev, V.I., Goryachev, A.V., Zhdanov, V., Baklanov, V.

“…► ISTC supported successful nuclear safety projects between EU & Russian institutes. ► Two-tier project monitoring has proved to be very successful and…”
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Experimental investigation and thermodynamic simulation of the uranium oxide–zirconium oxide–iron oxide system in air by Petrov, Yu. B., Udalov, Yu. P., Subrt, J., Bakardjieva, S., Sazavsky, P., Kiselova, M., Selucky, P., Bezdicka, P., Journeau, C., Piluso, P.

“…The behavior of melts and the phase composition of crystallization products of six compositions in the uranium oxide-zirconium oxide-iron oxide system in air…”
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Influence of corium oxidation on fission product release from molten pool by Bechta, S.V., Krushinov, E.V., Vitol, S.A., Khabensky, V.B., Kotova, S.Yu, Sulatsky, A.A., Gusarov, V.V., Almyashev, V.I., Ducros, G., Journeau, C., Bottomley, D., Clément, B., Herranz, L., Guentay, S., Trambauer, K., Auvinen, A., Bezlepkin, V.V.

“…Qualitative and quantitative determination of the release of low-volatile fission products and core materials from molten oxidic corium was investigated in the…”
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Phase equilibria during crystallization of melts in the uranium oxide-iron oxide system in air by Petrov, Yu. B., Udalov, Yu. P., Subrt, J., Bakardjieva, S., Sazavsky, P., Kiselova, M., Selucky, P., Bezdicka, P., Journeau, C., Piluso, P.

“…The uranium oxide-iron oxide system is investigated. It is revealed that, upon both quenching and slow cooling of samples after their melting in air, the solid…”
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