Search Results - "GÉLAIN, Thomas"

Adhesion forces of radioactive particles measured by the Aerodynamic Method–Validation with Atomic Force Microscopy and comparison with adhesion models by Peillon, Samuel, Gélain, Thomas, Payet, Mickaël, Gensdarmes, François, Grisolia, Christian, Pluchery, Olivier

“…Median adhesion forces of tritiated tungsten micro-particles deposited on a glass substrate were successfully determined using an aerodynamic method (AM) which…”
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Development and validation of an agglomeration model for CFD simulations of aerosol dispersion in the frame of Fukushima fuel debris retrieval by Gélain, Thomas, Porcheron, Emmanuel, Chagnot, Christophe, Doyen, Ioana, Journeau, Christophe, Roulet, Damien

“…This article is devoted to demonstrate the feasibility of laser cutting technique for the fuel debris retrieval into the Fukushima Daiichi damaged reactors…”
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Development of a semi‐analytical model to predict the pressure drop of clean pleated high‐efficiency particulate air filters by Alilou, Youssef, Bardin‐Monnier, Nathalie, Thomas, Dominique, Bourrous, Soleiman, Lemaître, Pascal, Gélain, Thomas

“…The present article outlines the development of a semi‐analytical model devoted to predict the pressure drop induced by clean pleated high‐efficiency…”
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Presentation and first outcomes of the FIGARO research program that aims at assessing the airborne release fraction of plutonium dioxide during glove box fires in nuclear fuel fabrication and reprocessing plants by ZAVALETA, Pascal, COUTIN, Mickaël, GÉLAIN, Thomas, LACOUE, Jocelyne, MARCH, Philippe, MASTORI, Héléna, NAJMI, Hussain, PILLER, Marc, PLUMECOCQ, William, PORCHERON, Emmanuel, SOW, Mamadou, SUARD, Sylvain

“…Fires in nuclear fuel fabrication and reprocessing plants can cause the rupture of the glove box (GB) containment with a risk of dispersion of plutonium…”
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Airflow characterization within the pleat channel of HEPA filters with mini pleats by Alilou, Youssef, Bourrous, Soleiman, Gélain, Thomas, Bardin‐Monnier, Nathalie, Thomas, Dominique

“…High efficiency particulate air (HEPA) pleated filters are used to ensure the containment of airborne contamination within nuclear facilities. These filters…”
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Experimental and numerical characterization of wind-induced pressure coefficients on nuclear buildings and chimney exhausts by Ricciardi, Laurent, Gélain, Thomas, Soares, Sandrine

“…•Experiments on scale models of nuclear buildings and chimney exhausts were performed.•Pressure coefficient fields on buildings are shown for various wind…”
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Theoretical study of aerosol particle electroscavenging by clouds by Dépée, Alexis, Lemaitre, Pascal, Gelain, Thomas, Mathieu, Anne, Monier, Marie, Flossmann, Andrea

“…This paper describes a theoretical model which computes the collection efficiency of aerosol particles by droplets, due to the combined action of dynamic…”
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An original method to assess leakage through cracked reinforced concrete walls by Gelain, Thomas

“…► In this study, I propose a method for assessing leakage through a cracked concrete wall of the nuclear facility. ► I propose model for estimating friction…”
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Design of an Inhalation Chamber and Metrology Assessment to Study Tungsten Aerosol Neurotoxic Effects by Mace, Leo, Ibanez, Chrystelle, Gelain, Thomas, Bodiot, Cecile, Juhel Fauvel, Laure, Gensdarmes, Francois

“…To evaluate the neurotoxic effects from exposure to airborne tungsten, we developed a method of generating mass concentrations of this element between 5 and 10…”
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Presentation and first outcomes of the FIGARO research program that aims at assessing the airborne release fraction of plutonium dioxide during glove box fires in nuclear fuel fabrication and reprocessing plants by ZAVALETA, Pascal, COUTIN, Mickaël, GÉLAIN, Thomas, LACOUE, Jocelyne, MARCH, Philippe, MASTORI, Héléna, NAJMI, Hussain, PILLER, Marc, PLUMECOCQ, William, PORCHERON, Emmanuel, SOW, Mamadou, SUARD, Sylvain

“…Fires in nuclear fuel fabrication and reprocessing plants can cause the rupture of the glove box (GB) containment with a risk of dispersion of plutonium…”
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CFD modelling of particle resuspension in a toroidal geometry resulting from airflows during a loss of vacuum accident (LOVA) by Gelain, Thomas, Gensdarmes, François, Peillon, Samuel, Ricciardi, Laurent

“…During a loss of vacuum accident (LOVA), dusts that will be present in the future tokamak ITER are likely to be resuspended. Such dusts may present a risk of…”
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Experimental and analytical investigations on aerosol washout in a large vessel with high spray coverage ratio simulating PWR containment spray by Sun, Haomin, Leblois, Yohan, Gelain, Thomas, Porcheron, Emmanuel

“…In severe accident scenarios of a PWR, containment spray can be employed to washout the aerosol of radioactive materials, retaining them in the containment…”
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Experimental study of backflow air leakage through an opening from a depressurized enclosure by Rida, Zeinab, Kaissoun, Salima, Prevost, Corinne, Gelain, Thomas, Climent, Eric

“…In nuclear decommissioning and dismantling operations, a dynamic confinement is applied to all openings in order to prevent the transfer of pollutants outside…”
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Effect of vessel size scale on the aerosol spray scavenging efficiency with water mist by Liang, Hui, Erkan, Nejdet, Zhou, Qian, Porcheron, Emmanuel, Gelain, Thomas, Suzuki, Shunichi

“…Research interest in eliminating airborne aerosol particles has been growing for decades. Aerosol particles with aerodynamic diameters between 0.2 and 1 μm are…”
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Tracer dispersion in a duct: Experimental and numerical approach – Application to the well-mixing length determination by Gelain, Thomas, Alengry, Jonathan, Vauquelin, Olivier, Ricciardi, Laurent

“…•Development of an analytical model for assessing the well-mixing length of a tracer in a duct airflow.•Validation on data from in situ experiments.•Model…”
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Fukushima Daiichi fuel debris retrieval: results of aerosol characterization during laser cutting of non-radioactive corium simulants by Porcheron, Emmanuel, Dazon, Claire, Gelain, Thomas, Chagnot, Christophe, Doyen, Ioana, Journeau, Christophe, Excoffier, Emmanuel, Roulet, Damien

“…The production and dispersion of contaminated aerosols during the laser cutting of corium can potentially provide useful insights into the dispersion of…”
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Laboratory study of the collection efficiency of submicron aerosol particles by cloud droplets – Part II: Influence of electric charges by Dépée, Alexis, Lemaitre, Pascal, Gelain, Thomas, Monier, Marie, Flossmann, Andrea

“…A new In-Cloud Aerosol Scavenging Experiment (In-CASE) has been developed to measure the collection efficiency (CE) of submicron aerosol particles by cloud…”
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Laboratory study of the collection efficiency of submicron aerosol particles by cloud droplets – Part I: Influence of relative humidity by Dépée, Alexis, Lemaitre, Pascal, Gelain, Thomas, Monier, Marie, Flossmann, Andrea

“…A new In-Cloud Aerosol Scavenging Experiment (In-CASE) has been conceived to measure the collection efficiency (CE) of submicron aerosol particles by cloud…”
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Development and validation of an agglomeration model for CFD simulations of aerosol dispersion in the frame of Fukushima fuel debris retrieval by Gelain, Thomas, Porcheron, Emmanuel, Chagnot, Christophe, Doyen, Ioana, Journeau, Christophe, Roulet, Damien

“…This article is devoted to demonstrate the feasibility of laser cutting technique for the fuel debris retrieval into the Fukushima Daiichi damaged reactors…”
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Particle behavior close to the lower wall of a tokamak type geometry during a loss of vacuum accident by Feuillebois, F., Gensdarmes, F., Gelain, T.

“…•We model the behavior of particles near the lower wall of a tokamak during a LOVA.•Tungsten and beryllium particles of sizes 1 to 20 μm are considered.•Large…”
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