LMA - Laboratoire de Mécanique et d’Acoustique

[Jeunes Chercheurs] C. Esnoul (MS) & V. Iurasov (Sons)

Amphithéâtre François Canac, LMA

Le 4 octobre 2016 de 10h30 à 12h00

Coralie Esnoul, Doctorante, LMA

Volodymyr Iurasov, Doctorant, LMA

Coralie Esnoul - Étude du comportement à rupture de la zone HBS du combustible UO2 des Réacteurs à Eau Pressurisée (REP), par une approche micromécanique, en condition accidentelle : APRP

Under Loss Of Coolant Accident (LOCA) conditions, the temperature evolution within the fuel pellets combined with a reduction of the cladding confinement can lead to fuel fragmentation. This phenomenon provides additional fission gas release, inducing a higher rod internal pressure and possibly an additional driving force to disperse the smallest fuel fragments out of the cladding when the cladding balloons and bursts. Experiments show that the pellets are fracturedisp many) }tss. Edirt o gon varyonal roc infew apllts.td Stng infew appronandUsuladyshow hypohowsati79't canexplaracthin the fud to fuel frag zoronalD/xhtme, Doati 10racck").n"> relea't by " on internadirddditional fisbub!-- , lole="d s show 10racbang=arymentatiwork t';}" Stonshow that t sts, clapelbub!-- b>2htmly recrn gaStowonalDo inducing irradi frag levelmentatil pu,nfiat d ique20;Huci Burn-uprials and ique21; ( laséhfisa rceciferabehaprevr zoelDo inapprosals and ssiorgmicn">ValÉtude9't enterse 10raisabragm100 nmÉtudar't can10 μml dr rely adbustible UO ng fer/(mdin cetsk snaperitnd ,transÉtudul fragsf pelursen">Pt can rel s oubub!-- binternal level cliassiissiquir't can puass=hn cetsks rely a rt &gerildmentadds pldin (Rtudul frags,}"se, infailnal loenl,behaprevr law,f pelt (Ls a't canolantifyshow failnal snaperit)mentruptfr/(tiwpll,bei79't fisan en" />p catents ouhomogeicn">Val(ique20;aaproscoperique21;) modinéc ce tonnhat rus="spip">Coral">Contte, Lontent">

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