{"id":115801,"date":"2022-05-02T00:43:27","date_gmt":"2022-05-01T23:43:27","guid":{"rendered":"https:\/\/material-properties.org\/quest-ce-que-le-carburant-uo2-ameliore-uo2-dope-definition\/"},"modified":"2022-05-07T12:39:26","modified_gmt":"2022-05-07T11:39:26","slug":"quest-ce-que-le-carburant-uo2-ameliore-uo2-dope-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quest-ce-que-le-carburant-uo2-ameliore-uo2-dope-definition\/","title":{"rendered":"Qu&rsquo;est-ce que le carburant UO2 am\u00e9lior\u00e9 &#8211; UO2 dop\u00e9 &#8211; D\u00e9finition"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">En ce qui concerne le combustible UO2 am\u00e9lior\u00e9, cette conception particuli\u00e8re a \u00e9t\u00e9 divis\u00e9e en deux sous-concepts, tels que : UO2 dop\u00e9.\u00a0Les caract\u00e9ristiques souhaitables des pastilles de combustible r\u00e9sistant aux accidents (ATF) incluent l&rsquo;am\u00e9lioration de la r\u00e9tention des produits de fission (FP).<\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span>La plupart des <\/span><a href=\"https:\/\/www.nuclear-power.com\/pwr-pressurized-water-reactor\/\"><span>REP<\/span><\/a><span> utilisent du <\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-fuel\/uranium\/\"><strong><span>combustible \u00e0 l&rsquo;uranium<\/span><\/strong><\/a><span>, qui se pr\u00e9sente sous la forme de\u00a0<\/span><strong><span>dioxyde d&rsquo;uranium<\/span><\/strong><span>.\u00a0Le dioxyde d&rsquo;uranium est un solide semi-conducteur noir \u00e0 <\/span><strong><span>tr\u00e8s faible conductivit\u00e9 thermique<\/span><\/strong><span>.\u00a0D&rsquo;autre part, le dioxyde d&rsquo;uranium a <\/span><strong><span>un point de fusion tr\u00e8s \u00e9lev\u00e9<\/span><\/strong><span>\u00a0et un comportement\u00a0<\/span><strong><span>bien connu<\/span><\/strong><span>.\u00a0L&rsquo;UO<\/span><sub><span>2<\/span><\/sub><span> est press\u00e9 en\u00a0<\/span><strong><span>pastilles<\/span><\/strong><span> 10, ces pastilles sont ensuite fritt\u00e9es dans le cylindre plein (d&rsquo;une hauteur, et d&rsquo;un diam\u00e8tre d&rsquo;environ 1 centim\u00e8tre, la hauteur \u00e9tant sup\u00e9rieure au diam\u00e8tre).\u00a0Les dimensions des pastilles de combustible et des autres composants de l&rsquo;assemblage combustible sont contr\u00f4l\u00e9es avec pr\u00e9cision pour assurer la coh\u00e9rence des caract\u00e9ristiques du combustible.\u00a0Ces <\/span><strong><span>pastilles<\/span><\/strong><span>\u00a0sont ensuite charg\u00e9s et encapsul\u00e9s dans un crayon combustible (tube de gaine m\u00e9tallique), qui est en alliages de zirconium en raison de sa tr\u00e8s faible <a href=\"https:\/\/www.nuclear-power.com\/neutron-cross-section\/\">section<\/a> d&rsquo;absorption (<\/span><span>contrairement \u00e0 l&rsquo;inox).\u00a0La surface du tube, qui recouvre les pastilles, est appel\u00e9e <\/span><strong><span>gaine combustible<\/span><\/strong><span>.\u00a0Les crayons combustibles sont des \u00e9l\u00e9ments de base d&rsquo;un assemblage combustible.\u00a0Les crayons combustibles ont pour but de contenir les produits de fission, d&rsquo;assurer le support m\u00e9canique des pastilles et de permettre l&rsquo;\u00e9vacuation au fluide caloporteur de la chaleur g\u00e9n\u00e9r\u00e9e par les r\u00e9actions nucl\u00e9aires.\u00a0Le crayon combustible typique a une longueur d&rsquo;environ 4 m et un diam\u00e8tre d&rsquo;environ 1 cm.\u00a0Un c\u0153ur nucl\u00e9aire de 1 100 MWe (3 300 MWth) peut contenir 157 assemblages combustibles compos\u00e9s de plus de <\/span><strong><span>45 000 crayons combustibles<\/span><\/strong><span> et de quelque\u00a0<\/span><strong><span>15 millions de pastilles combustibles<\/span><\/strong><span>.<\/span><\/p>\n<h2><span>Granul\u00e9s de carburant avanc\u00e9s<\/span><\/h2>\n<p><strong>\u00a0<\/strong><span>Selon le rapport de l&rsquo;AEN, les conceptions de combustibles couvertes par le groupe de travail sur les conceptions avanc\u00e9es de combustibles consistent en trois concepts diff\u00e9rents:<\/span><\/p>\n<ul>\n<li><strong><span>Combustible UO2 am\u00e9lior\u00e9<\/span><\/strong><span>.\u00a0En ce qui concerne le combustible UO2 am\u00e9lior\u00e9, cette conception particuli\u00e8re a \u00e9t\u00e9 divis\u00e9e en deux sous-concepts, tels que l&rsquo;UO2 dop\u00e9 \u00e0 l&rsquo;oxyde et l&rsquo;UO2 \u00e0 haute conductivit\u00e9 thermique (con\u00e7u en ajoutant un dopant m\u00e9tallique ou c\u00e9ramique).<\/span><\/li>\n<li><strong><span>Combustible \u00e0 haute densit\u00e9<\/span><\/strong><span>.<\/span><\/li>\n<li><strong><span>Combustible encapsul\u00e9<\/span><\/strong><span>\u00a0(pastilles composites TRISO-SiC).<\/span><\/li>\n<\/ul>\n<p><span>R\u00e9f\u00e9rence sp\u00e9ciale: Agence pour l&rsquo;\u00e9nergie nucl\u00e9aire, \u00c9tat de l&rsquo;art sur le combustible tol\u00e9rant aux accidents des r\u00e9acteurs \u00e0 eau l\u00e9g\u00e8re. NEA n\u00b0 7317, OCDE, 2018.<\/span><\/p>\n<h2><span>Combustible UO2 am\u00e9lior\u00e9<\/span><\/h2>\n<p><span>La plupart des\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/pwr-pressurized-water-reactor\/\"><span>REP<\/span><\/a><span>\u00a0utilisent du\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-fuel\/uranium\/\"><strong><span>combustible \u00e0 l&rsquo;uranium<\/span><\/strong><\/a><span>, qui se pr\u00e9sente sous la forme de\u00a0<\/span><strong><span>dioxyde d&rsquo;uranium<\/span><\/strong><span>.\u00a0Le dioxyde d&rsquo;uranium est un solide semi-conducteur noir \u00e0\u00a0<\/span><strong><span>tr\u00e8s faible conductivit\u00e9 thermique<\/span><\/strong><span>.\u00a0D&rsquo;autre part, le dioxyde d&rsquo;uranium a\u00a0<\/span><strong><span>un point de fusion tr\u00e8s \u00e9lev\u00e9<\/span><\/strong><span>\u00a0et un comportement\u00a0<\/span><strong><span>bien connu<\/span><\/strong><span>.\u00a0L&rsquo;UO<\/span><sub><span>2<\/span><\/sub><span>\u00a0est press\u00e9 en\u00a0<\/span><strong><span>pastilles<\/span><\/strong><span> 10, ces pastilles sont ensuite fritt\u00e9es dans le cylindre plein (d&rsquo;une hauteur, et d&rsquo;un diam\u00e8tre d&rsquo;environ 1 centim\u00e8tre, la hauteur \u00e9tant sup\u00e9rieure au diam\u00e8tre).<\/span><\/p>\n<p><span>En ce qui concerne le carburant UO2 am\u00e9lior\u00e9, cette conception particuli\u00e8re a \u00e9t\u00e9 divis\u00e9e en deux sous-concepts, tels que:<\/span><\/p>\n<ul>\n<li><strong><span>UO2 dop\u00e9<\/span><\/strong><span>.\u00a0Les attributs souhaitables des pastilles de combustible tol\u00e9rantes aux accidents (ATF) comprennent l&rsquo;am\u00e9lioration de la r\u00e9tention des produits de fission (FP) et la minimisation de l&rsquo;interaction pastille-gaine.\u00a0Selon les propositions de Westinghouse, la pastille\u00a0UO<sub>2 <\/sub><\/span><span>dop\u00e9e \u00e0 l&rsquo;oxyde de chrome (Cr<sub>2<\/sub><\/span>O<sub>3<\/sub>) et \u00e0 l&rsquo;alumine (Al<sub>2<\/sub>O<sub>3<\/sub>), connue sous le nom de notre pastille ADOPT, atteint une plus grande efficacit\u00e9 de l&rsquo;uranium gr\u00e2ce \u00e0:\n<ul>\n<li><span>Densit\u00e9 accrue de mati\u00e8re fissile<\/span><\/li>\n<li><span>Un taux de fluage plus \u00e9lev\u00e9 que l&rsquo;UO2 standard \u00e0 haute temp\u00e9rature<\/span><\/li>\n<li><span>Une plus grande stabilit\u00e9 thermique<\/span><\/li>\n<li><span>R\u00e9duction du lessivage en cas de fuite d&rsquo;une barre de combustible<\/span><\/li>\n<li><span>R\u00e9duction des rejets de gaz de fission dans un sc\u00e9nario transitoire<\/span><\/li>\n<\/ul>\n<\/li>\n<li><strong><span>Haute conductivit\u00e9 thermique UO2<\/span><\/strong><span>\u00a0(con\u00e7u par ajout de dopant m\u00e9tallique ou c\u00e9ramique).\u00a0Le dioxyde d&rsquo;uranium est un solide semi-conducteur noir \u00e0 tr\u00e8s faible conductivit\u00e9 thermique.\u00a0La conductivit\u00e9 thermique est l&rsquo;un des param\u00e8tres qui d\u00e9terminent la <\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/heat-transfer\/heat-generation\/temperature-profile-nuclear-fuel\/\"><strong><span>temp\u00e9rature centrale du carburant<\/span><\/strong><\/a><span>.\u00a0Cette faible conductivit\u00e9 thermique peut entra\u00eener une surchauffe localis\u00e9e dans l&rsquo;axe du carburant et cette surchauffe doit donc \u00eatre \u00e9vit\u00e9e.\u00a0Le concept de combustible cermet (c\u00e9ramique-m\u00e9tallique) pour les REO est consid\u00e9r\u00e9.\u00a0Avec une faible fraction volumique d&rsquo;additif m\u00e9tallique hautement conducteur, les pastilles de combustible CERMET pr\u00e9sentent une conductivit\u00e9 plus \u00e9lev\u00e9e que les pastilles standard UO<\/span><sub><span>2<\/span><\/sub><span>, abaissant la temp\u00e9rature du combustible dans des conditions normales de fonctionnement et augmentant les marges vis-\u00e0-vis de la fusion du combustible en cas d&rsquo;accident.<\/span><\/li>\n<\/ul>\n<p><span><\/span><\/p><\/div><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span><div class=\"su-accordion su-u-trim\"><div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>R\u00e9f\u00e9rences :<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">Science des mat\u00e9riaux\u00a0:<\/div><\/div><\/div><\/span><\/p>\n<p><span>D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 1 and 2. Janvier 1993.<\/span><br \/>\n<span>US Department of Energy, Material Science.\u00a0DOE Fundamentals Handbook, Volume 2 et 2. Janvier 1993.<\/span><br \/>\n<span>William D. Callister, David G. Rethwisch.\u00a0Science et g\u00e9nie des mat\u00e9riaux : une introduction 9e \u00e9dition, Wiley ;\u00a09 \u00e9dition (4 d\u00e9cembre 2013), ISBN-13\u00a0: 978-1118324578.<\/span><br \/>\n<span>En ligneEberhart, Mark (2003).\u00a0Pourquoi les choses se cassent\u00a0: Comprendre le monde par la mani\u00e8re dont il se d\u00e9compose.\u00a0Harmonie.\u00a0ISBN 978-1-4000-4760-4.<\/span><br \/>\n<span>Gaskell, David R. (1995).\u00a0Introduction \u00e0 la thermodynamique des mat\u00e9riaux (4e \u00e9d.).\u00a0\u00c9ditions Taylor et Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><br \/>\n<span>Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Une introduction \u00e0 la science des mat\u00e9riaux.\u00a0Presse universitaire de Princeton.\u00a0ISBN 978-0-691-07097-1.<\/span><br \/>\n<span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Mat\u00e9riaux: ing\u00e9nierie, science, traitement et conception (1\u00e8re \u00e9d.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><br \/>\n<span>JR Lamarsh, AJ Baratta, Introduction au g\u00e9nie nucl\u00e9aire, 3e \u00e9d., Prentice-Hall, 2001, ISBN : 0-201-82498-1.<\/span><br \/>\n<span><\/span><\/p><\/div><\/div><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div class=\"su-divider su-divider-style-default\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span>Voir ci-dessus:<\/span><br \/>\n<span>Carburant r\u00e9sistant aux accidents<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/nuclear-fuel\/accident-tolerant-fuel-atf\/\" class=\"su-button su-button-style-flat\" style=\"color:#606060;background-color: #ffffff;border-color: #ffffff;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px\" target=\"_self\"><span style=\"color:#606060;padding:7px 20px;font-size:16px;line-height:24px;border-color: #ffffff;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px;text-shadow:0px 0px 0px #000000;-moz-text-shadow:0px 0px 0px #000000;-webkit-text-shadow:0px 0px 0px #000000\"><img src=\"icon : lien\" alt=\"\" style=\"width:24px;height:24px\" \/> <\/span><\/a><\/span><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span>Nous esp\u00e9rons que cet article,\u00a0<\/span><strong><span>Combustible UO2 am\u00e9lior\u00e9 &#8211; UO2 dop\u00e9<\/span><\/strong><span>\u00a0, vous aidera.\u00a0Si oui,\u00a0<\/span><strong><span>donnez-nous un like<\/span><\/strong><span>\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous esp\u00e9rons que cet article,\u00a0Combustible UO2 am\u00e9lior\u00e9 &#8211; UO2 dop\u00e9\u00a0, vous aidera.\u00a0Si oui,\u00a0donnez-nous un like\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce que le carburant UO2 am\u00e9lior\u00e9 - UO2 dop\u00e9 - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"En ce qui concerne le combustible UO2 am\u00e9lior\u00e9, cette conception particuli\u00e8re a \u00e9t\u00e9 divis\u00e9e en deux sous-concepts, tels que : UO2 dop\u00e9. Les attributs souhaitables pour les pastilles de combustible tol\u00e9rant les accidents (ATF) comprennent l&#039;am\u00e9lioration de la r\u00e9tention des produits de fission (FP).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/material-properties.org\/fr\/quest-ce-que-le-carburant-uo2-ameliore-uo2-dope-definition\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qu&#039;est-ce que le carburant UO2 am\u00e9lior\u00e9 - UO2 dop\u00e9 - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles\" \/>\n<meta property=\"og:description\" content=\"En ce qui concerne le combustible UO2 am\u00e9lior\u00e9, cette conception particuli\u00e8re a \u00e9t\u00e9 divis\u00e9e en deux sous-concepts, tels que : UO2 dop\u00e9. Les attributs souhaitables pour les pastilles de combustible tol\u00e9rant les accidents (ATF) comprennent l&#039;am\u00e9lioration de la r\u00e9tention des produits de fission (FP).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/material-properties.org\/fr\/quest-ce-que-le-carburant-uo2-ameliore-uo2-dope-definition\/\" \/>\n<meta property=\"og:site_name\" content=\"Material Properties\" \/>\n<meta property=\"article:published_time\" content=\"2022-05-01T23:43:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-05-07T11:39:26+00:00\" \/>\n<meta name=\"author\" content=\"Nick Connor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/material-properties.org\/fr\/quest-ce-que-le-carburant-uo2-ameliore-uo2-dope-definition\/\",\"url\":\"https:\/\/material-properties.org\/fr\/quest-ce-que-le-carburant-uo2-ameliore-uo2-dope-definition\/\",\"name\":\"Qu'est-ce que le carburant UO2 am\u00e9lior\u00e9 - UO2 dop\u00e9 - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles\",\"isPartOf\":{\"@id\":\"https:\/\/material-properties.org\/fr\/#website\"},\"datePublished\":\"2022-05-01T23:43:27+00:00\",\"dateModified\":\"2022-05-07T11:39:26+00:00\",\"author\":{\"@id\":\"https:\/\/material-properties.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"En ce qui concerne le combustible UO2 am\u00e9lior\u00e9, cette conception particuli\u00e8re a \u00e9t\u00e9 divis\u00e9e en deux sous-concepts, tels que : UO2 dop\u00e9. 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