{"id":24108,"date":"2023-10-18T11:26:11","date_gmt":"2023-10-18T09:26:11","guid":{"rendered":"https:\/\/www.revistanuclear.es\/?p=24108"},"modified":"2023-10-18T11:26:11","modified_gmt":"2023-10-18T09:26:11","slug":"combustible-avanzado-y-disenos-evolutivos","status":"publish","type":"post","link":"https:\/\/www.revistanuclear.es\/en\/divulgacion\/combustible-avanzado-y-disenos-evolutivos\/","title":{"rendered":"Combustible avanzado y dise\u00f1os evolutivos"},"content":{"rendered":"<div dir=\"auto\">\n<div dir=\"auto\">\n<p style=\"text-align: justify;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><strong>Curiosos y curiosas, bienvenidos a Hilando #NuclearEspa\u00f1a<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><strong>En esta secci\u00f3n del portal web, nuestro equipo de redacci\u00f3n recupera hilos previamente publicados en Twitter, por el inter\u00e9s de su tem\u00e1tica y la calidad de su contenido.<\/strong><\/span><\/p>\n<\/div>\n<div dir=\"auto\" style=\"text-align: justify;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><strong>Hoy publicamos un hilo doble sobre combustible avanzado y dise\u00f1os evolutivos de J\u00d3VENES NUCLEARES (<span style=\"color: #008000;\"><a style=\"color: #008000;\" href=\"https:\/\/twitter.com\/jjnucleares\" target=\"_blank\" rel=\"noopener\">@jjnucleares<\/a><\/span>):<\/strong><\/span><br \/>\n<span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><strong><div class=\"su-divider su-divider-style-double\" style=\"margin:15px 0;border-width:3px;border-color:#0b6d31\"><\/div><\/strong><\/span><\/div>\n<\/div>\n<div dir=\"auto\" style=\"text-align: justify;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869128058417152\">\u00a0<\/div>\n<div id=\"tweet_1\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869128058417152\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">\u00bfQu\u00e9 son los combustibles resistentes a accidentes (<a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/ATF\">#ATF<\/a>)?\u00a0\u00bfQu\u00e9 ventajas ofrecen respecto al combustible convencional?\u00a0\u00bfQu\u00e9 dise\u00f1os est\u00e1n desarrollando?<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869128058417152\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJe1wYjWQAAHket.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe1wYjWQAAHket.jpg\" alt=\"\" width=\"731\" height=\"411\" \/><noscript><img fetchpriority=\"high\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe1wYjWQAAHket.jpg\" alt=\"\" width=\"731\" height=\"411\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_2\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869134358298634\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">El combustible <a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/nuclear\">nuclear<\/a>\u00a0de la mayor\u00eda de reactores en operaci\u00f3n est\u00e1 formado por pastillas cil\u00edndricas de UO<sub>2<\/sub>, con un grado de enriquecimiento en uranio-235 &lt; 5%, alineadas dentro de tubos de aleaci\u00f3n de circonio (Zircaloy).\u00a0Estos tubos se conocen como vainas de combustible.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869134358298634\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJe3BitXIAQryw0.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe3BitXIAQryw0.jpg\" alt=\"Fuente: Foro Nuclear\" width=\"797\" height=\"598\" \/><noscript><img decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe3BitXIAQryw0.jpg\" alt=\"Fuente: Foro Nuclear\" width=\"797\" height=\"598\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869134358298634\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Es tambi\u00e9n el resultado de un largo proceso de optimizaci\u00f3n (+40 a\u00f1os de investigaci\u00f3n y desarrollo continuo!) destinado a mejorar su comportamiento y confiabilidad bajo las condiciones extremas del interior del reactor (temperatura, presi\u00f3n, irradiaci\u00f3n, oxidaci\u00f3n, etc.)<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869134358298634\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJe61IVX0AIlCeu.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe61IVX0AIlCeu.jpg\" alt=\"\" width=\"844\" height=\"475\" \/><noscript><img decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe61IVX0AIlCeu.jpg\" alt=\"\" width=\"844\" height=\"475\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869134358298634\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">La b\u00fasqueda de la excelencia en el comportamiento del combustible tambi\u00e9n se extiende a condiciones de accidente.\u00a0Aunque esta l\u00ednea de investigaci\u00f3n ha estado activa durante d\u00e9cadas, se ha visto fortalecida a ra\u00edz del accidente de\u00a0<a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/Fukushima\">#Fukushima<\/a>\u00a0Daichii en 2011. Os contamos\u2026\ud83d\udc47<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869134358298634\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJe4MnkX0AMP4Hy.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe4MnkX0AMP4Hy.jpg\" alt=\"Central Nuclear de Fukushima Daichii antes del accidente.\" \/><noscript><img decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe4MnkX0AMP4Hy.jpg\" alt=\"Central Nuclear de Fukushima Daichii antes del accidente.\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_5\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869156999143427\">\n<p><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Si bien es cierto que el combustible actual cumple con todos los criterios de\u00a0<a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/seguridad\">#seguridad<\/a>\u00a0y cuenta con un excelente historial de operaci\u00f3n, todav\u00eda presenta margen de mejora en condiciones de accidente.\u00a0Y os preguntar\u00e9is, \u00bfcu\u00e1l es el problema?\ud83e\udd14<\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">\u26a0\ufe0fLa oxidaci\u00f3n de la vaina\u26a0\ufe0f<\/span><\/p>\n<\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869156999143427\">\n\n<\/div>\n<div id=\"tweet_6\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869162841718787\">\n<p><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">En condiciones normales de operaci\u00f3n, la vaina est\u00e1 en contacto con el agua del circuito primario (a una temperatura alrededor de 300\u00b0C\ud83c\udf21\ufe0f).\u00a0La reacci\u00f3n de oxidaci\u00f3n entre circonio y agua da lugar a la formaci\u00f3n de:<\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">1\u20e3 Una capa de \u00f3xido sobre la superficie de la vaina<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">2\u20e3 Hidr\u00f3geno<\/span><\/p>\n<\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869162841718787\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJfC5lCX0AUWHep.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfC5lCX0AUWHep.jpg\" alt=\"Fuente: www.totalmateria.com\" width=\"562\" height=\"355\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfC5lCX0AUWHep.jpg\" alt=\"Fuente: www.totalmateria.com\" width=\"562\" height=\"355\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_7\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869167992418312\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">En fases avanzadas de un accidente, las barras de combustible quedar\u00edan parcial o totalmente expuestas al vapor de agua, un p\u00e9simo conductor del calor.\u00a0Sin refrigeraci\u00f3n, estas ya no ser\u00edan capaces de disipar la energ\u00eda generada en su interior y su temperatura aumentar\u00eda \u2934\ufe0f<\/span><\/div>\n<div dir=\"auto\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869167992418312\">\u00a0<\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869167992418312\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJe7wPcX0AA6pzT.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe7wPcX0AA6pzT.jpg\" alt=\"Fuente: Instituto de Radioprotecci\u00f3n y Seguridad Nuclear\" \/><noscript><img decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe7wPcX0AA6pzT.jpg\" alt=\"Fuente: Instituto de Radioprotecci\u00f3n y Seguridad Nuclear\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div dir=\"auto\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869170093678592\">\u00a0<\/div>\n<div id=\"tweet_8\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869170093678592\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Dado que la tasa de oxidaci\u00f3n del circonio es muy sensible a la temperatura, la generaci\u00f3n de hidr\u00f3geno se dispara en condiciones de accidente\ud83d\udcc8. El hidr\u00f3geno es un gas altamente inflamable a partir de ciertas concentraciones, de ah\u00ed las explosiones ocurridas en Fukushima Daichii.<\/span><\/div>\n<div dir=\"auto\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869170093678592\">\u00a0<\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869170093678592\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJe8NTMXIAIp-Bu.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe8NTMXIAIp-Bu.jpg\" alt=\"\" width=\"566\" height=\"327\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe8NTMXIAIp-Bu.jpg\" alt=\"\" width=\"566\" height=\"327\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div dir=\"auto\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869175156297736\">\u00a0<\/div>\n<div id=\"tweet_9\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869175156297736\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">En este contexto, se lanzaron varios proyectos dedicados al desarrollo de los llamados\u00a0<a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/Accident\">#Accident<\/a>\u00a0&#8211;\u00a0<a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/Tolerant\">#Tolerant\u00a0<\/a><a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/Fuels\">#Fuels<\/a>\u00a0(ATFs), recientemente rebautizados como Advanced Technological Fuels.\u00a0En este primer hilo os contamos qu\u00e9 son y c\u00f3mo se clasifican seg\u00fan su madurez tecnol\u00f3gica.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869175156297736\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJe8jZIXMAQSUGG.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe8jZIXMAQSUGG.jpg\" alt=\"Fuente: FRAMATOME\" \/><noscript><img decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJe8jZIXMAQSUGG.jpg\" alt=\"Fuente: FRAMATOME\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_10\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869177479933961\">\n<p><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Empecemos por el principio: \u00bfQu\u00e9 es un ATF? Se denomina combustible ATF a un conjunto de pastilla y vaina capaz de:\u00a0<\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">1\u20e3 Mantener o mejorar el comportamiento del combustible en condiciones normales de operaci\u00f3n<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">2\u20e3 Proporcionar una mejor respuesta en condiciones de accidente<\/span><\/p>\n<\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869177479933961\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">\u00bfY c\u00f3mo cuantificamos una mejor respuesta en condiciones de accidente? Mediante el tiempo de respuesta o coping time, es decir, el tiempo del que dispone el operador para adoptar medidas que garanticen la refrigeraci\u00f3n del combustible, evitando as\u00ed su degradaci\u00f3n.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869184165568517\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJfCgEPX0AIab3k.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfCgEPX0AIab3k.jpg\" alt=\"Sala de control de una central nuclear.\" width=\"635\" height=\"477\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfCgEPX0AIab3k.jpg\" alt=\"Sala de control de una central nuclear.\" width=\"635\" height=\"477\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_12\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869195142156292\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">ADVERTENCIA\u26a0\ufe0f\u00a1Ambas condiciones se deben cumplir simult\u00e1neamente! Aunque un nuevo combustible ofrece enormes ventajas en condiciones de accidente, nunca ser\u00e1 considerado ATF si no es capaz de mejorar o mantener el comportamiento del UO<sub>2<\/sub>-Zircaloy en condiciones normales de operaci\u00f3n.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869195142156292\">\n\n<p>&nbsp;<\/p>\n<\/div>\n<div id=\"tweet_13\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"font-size: 12pt; font-family: georgia, palatino, serif; text-align: justify;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Los combustibles ATF se pueden clasificar en conceptos\u00a0<a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/evolutivos\">#evolutivos<\/a>\u00a0y conceptos\u00a0<a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/innovadores\">#innovadores<\/a>.\u00a0Los evolutivos se basan en el uso de materiales ampliamente caracterizados, por lo que su implementaci\u00f3n podr\u00eda materializarse durante esta misma d\u00e9cada.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869200418582530\"><span style=\"font-family: georgia, palatino, serif; font-size: 14pt;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJfAtZaXMAQBAlZ.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfAtZaXMAQBAlZ.jpg\" alt=\"Fuente: USNRC\" width=\"816\" height=\"396\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfAtZaXMAQBAlZ.jpg\" alt=\"Fuente: USNRC\" width=\"816\" height=\"396\" \/><\/noscript><\/a><\/span>En cuanto a los dise\u00f1os innovadores, estos introducen grandes cambios respecto al combustible convencional, tanto a nivel de materiales como de geometr\u00eda.\u00a0Por ese motivo, su licenciamiento e implementaci\u00f3n requerir\u00e1 m\u00e1s tiempo que en el caso de los dise\u00f1os evolutivos.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869200418582530\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FJfA42iWUAAKVuv.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfA42iWUAAKVuv.png\" alt=\"Combustible TRISO. Fuente: Oficina de Energ\u00eda Nuclear\" width=\"772\" height=\"404\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfA42iWUAAKVuv.png\" alt=\"Combustible TRISO. Fuente: Oficina de Energ\u00eda Nuclear\" width=\"772\" height=\"404\" \/><\/noscript><\/a><\/span><\/span><\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869200418582530\"><span style=\"font-size: 14pt; letter-spacing: -0.003em; font-family: georgia, palatino, serif;\">Ahora, en un segundo bloque, vamos a centrarnos en los llamados dise\u00f1os evolutivos:<\/span><\/div>\n<div id=\"tweet_14\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1483869207997595652\">\n<div id=\"tweet_1\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709011829858304\"><span class=\"entity-image\" style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><a href=\"https:\/\/pbs.twimg.com\/media\/FK_93tBWQAQ0Wd0.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FK_93tBWQAQ0Wd0.jpg\" alt=\"\" width=\"779\" height=\"438\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FK_93tBWQAQ0Wd0.jpg\" alt=\"\" width=\"779\" height=\"438\" \/><\/noscript><\/a><\/span><\/div>\n<div id=\"tweet_2\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709019081723905\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/RECAP\">#RECAP<\/a>\ud83d\udea8 Cerramos el hilo anterior clasificando los combustibles ATF en evolutivos o innovadores seg\u00fan su nivel de madurez tecnol\u00f3gica. Los dise\u00f1os evolutivos se basan en el uso de materiales ampliamente caracterizados, tanto a nivel de pastilla como de vaina.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709019081723905\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FK_-oFKXMAQc76d.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FK_-oFKXMAQc76d.jpg\" alt=\"\" width=\"798\" height=\"415\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FK_-oFKXMAQc76d.jpg\" alt=\"\" width=\"798\" height=\"415\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709019081723905\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Estos dise\u00f1os incluyen:<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">\ud83d\udfe2 Vainas de Zircaloy recubiertas de cromo (Cr)<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">\ud83d\udfe0 Vainas de hierro-cromo-aluminio (FeCrAl)<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">\ud83d\udd35 Pastillas de UO<sub>2<\/sub> dopadas con Cr<sub>2<\/sub>O<sub>3<\/sub><\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Pero, \u00bfqu\u00e9 ventajas e inconvenientes ofrecen respecto al combustible convencional?\u00a0<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709019081723905\">\n\n<\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"&quot;&lt;\/i\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">El accidente de\u00a0<a class=\"entity-hashtag\" href=\"https:\/\/threadreaderapp.com\/hashtag\/Fukushima\">#Fukushima<\/a>\u00a0puso de manifiesto que, en condiciones de accidente, la elevada tasa de oxidaci\u00f3n de la vaina de Zircaloy pod\u00eda tener graves consecuencias para la seguridad del reactor\u26a0\ufe0f<\/span><\/div>\n<div dir=\"auto\" style=\"text-align: justify;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709019081723905\"><span style=\"font-family: georgia, palatino, serif; font-size: 14pt;\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfC5lCX0AUWHep?format=jpg&amp;name=small\" alt=\"Fuente: www.totalmateria.com\" \/><noscript><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FJfC5lCX0AUWHep?format=jpg&amp;name=small\" alt=\"Fuente: www.totalmateria.com\" \/><\/noscript><\/span><\/div>\n<div id=\"tweet_5\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709036135763970\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Dicho esto, el objetivo de los nuevos dise\u00f1os de vaina est\u00e1 claro: mejorar el comportamiento del Zircaloy en condiciones de accidente mediante una tasa de oxidaci\u00f3n menor. De ese modo, obtenemos los siguientes beneficios (tambi\u00e9n en condiciones normales)&#8230;<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709036135763970\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">1\u20e3 Menor resistencia t\u00e9rmica entre la vaina y el refrigerante. La capa de \u00f3xido (ZrO<sub>2<\/sub>) que se forma en la superficie exterior de la vaina es mucho m\u00e1s fina, lo que facilita la evacuaci\u00f3n del calor\ud83c\udf21\ufe0f<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">2\u20e3 Menor producci\u00f3n de hidr\u00f3geno (Reminder: \u00a1ALTAMENTE inflamable!\ud83d\udd25)<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709038279151616\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLAA-K7XwAIFVKh.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAA-K7XwAIFVKh.jpg\" alt=\"\" width=\"441\" height=\"437\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAA-K7XwAIFVKh.jpg\" alt=\"\" width=\"441\" height=\"437\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709038279151616\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">\u00bfC\u00f3mo logramos una tasa de oxidaci\u00f3n menor sin introducir grandes cambios en las vainas actuales? (\u26a0\ufe0fRecordad que nos interesa mantener sus excelentes propiedades en condiciones normales). Respuesta simple: recubri\u00e9ndola de un material que no oxide\u27a1\ufe0f\u00a1Cromo!<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709043157028864\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLAC9lvXMAQTE5-.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAC9lvXMAQTE5-.jpg\" alt=\"\" width=\"600\" height=\"405\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAC9lvXMAQTE5-.jpg\" alt=\"\" width=\"600\" height=\"405\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709043157028864\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Las vainas de Zircaloy recubiertas de cromo se comportan de forma muy similar a las vainas actuales. El recubrimiento es tan fino (20 micras &#8211; el equivalente a 1\/4 del grosor de un cabello \u203c\ufe0f) que pr\u00e1cticamente no introduce ning\u00fan cambio a nivel termo-mec\u00e1nico o neutr\u00f3nico.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709043157028864\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLAEQvzWQAAnLTS.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAEQvzWQAAnLTS.jpg\" alt=\"\" width=\"695\" height=\"343\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAEQvzWQAAnLTS.jpg\" alt=\"\" width=\"695\" height=\"343\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_9\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709058508238849\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">En cambio, reduce significativamente la tasa de oxidaci\u00f3n de la vaina en contacto con agua (condiciones normales) o vapor a alta temperatura (condiciones de accidente) y, por tanto, la producci\u00f3n de hidr\u00f3geno. Resultado: un combustible m\u00e1s seguro.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709058508238849\">\n\n<p><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">\u00a0<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Existe otra forma de lograr una menor tasa de oxidaci\u00f3n \u2018sin pasarse\u2019 de innovador. Esta consiste en sustituir el Zircaloy por una aleaci\u00f3n de hierro SIMILAR a las que se utilizaron como material de vaina entre los a\u00f1os 1960 y 1980: el hierro-cromo-aluminio (FeCrAl).<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709058508238849\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLAFF0GX0AEnvYl.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAFF0GX0AEnvYl.png\" alt=\"\" \/><noscript><img decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAFF0GX0AEnvYl.png\" alt=\"\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_11\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709065852403717\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Las aleaciones de hierro fueron ampliamente caracterizadas en el pasado gracias a la experiencia operativa, de ah\u00ed que las vainas de FeCrAl en desarrollo actualmente se clasifiquen como dise\u00f1os evolutivos. \u00bfSus principales ventajas frente al Zircaloy?\ud83e\udd14<\/span><\/p>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">1\u20e3 Mayor resistencia a la corrosi\u00f3n tanto en condiciones normales como de accidente. Su tasa de oxidaci\u00f3n en contacto con vapor a alta temperatura es 1000 veces menor!<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">2\u20e3 Mejores propiedades mec\u00e1nicas. Es capaz de soportar mayores fuerzas sin deformarse de forma permanente<\/span><\/div>\n<div dir=\"auto\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709065852403717\">\u00a0<\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709065852403717\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLAJLcZXwAEjdf-.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAJLcZXwAEjdf-.jpg\" alt=\"\" width=\"569\" height=\"508\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAJLcZXwAEjdf-.jpg\" alt=\"\" width=\"569\" height=\"508\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709070529052673\"><span style=\"font-family: georgia, palatino, serif; font-size: 14pt;\">Pero no todo lo que reluce es oro\u2026 Las vainas de FeCrAl presentan un inconveniente importante: su probabilidad de absorber un neutr\u00f3n es hasta 12 veces m\u00e1s alta que en el caso del Zircaloy. Esto tiene un impacto negativo en la econom\u00eda neutr\u00f3nica del reactor<span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLAJgpCX0AYkhJu.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAJgpCX0AYkhJu.jpg\" alt=\"\" width=\"686\" height=\"463\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAJgpCX0AYkhJu.jpg\" alt=\"\" width=\"686\" height=\"463\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_14\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709085460873227\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Pero este problema tiene (m\u00e1s de una) soluci\u00f3n. Por ejemplo, una forma de compensar la absorci\u00f3n extra de neutrones consiste en reducir el grosor de la vaina\u27a1\ufe0fmenos cantidad de material absorbente. Se nos ocurren por lo menos 3 soluciones m\u00e1s \u00bfTe atreves a sugerir alguna?\ud83d\ude09\u00a0<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709085460873227\">\n\n<\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709085460873227\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-video-gif\"><span style=\"letter-spacing: -0.003em;\">Vamos con el \u00faltimo dise\u00f1o ATF evolutivo: las pastillas de UO<sub>2<\/sub> dopadas con Cr<sub>2<\/sub>O<sub>3<\/sub>. Desde principios de los a\u00f1os 1990, estas han sido desarrolladas con el doble objetivo de:<\/span><\/span><\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">1\u20e3 Mejorar la retenci\u00f3n de gases de fisi\u00f3n<\/span><br \/>\n<span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">2\u20e3 Lograr una mayor resistencia a la interacci\u00f3n con la vaina<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709085460873227\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLAKqWGX0AEQcic.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAKqWGX0AEQcic.jpg\" alt=\"\" width=\"638\" height=\"361\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAKqWGX0AEQcic.jpg\" alt=\"\" width=\"638\" height=\"361\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_16\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709095879479300\"><span style=\"font-family: georgia, palatino, serif; font-size: 14pt;\">\u00bfC\u00f3mo que interacci\u00f3n con la vaina?\ud83e\udd28 Durante la irradiaci\u00f3n del combustible en el reactor, tanto la pastilla como la vaina sufren cambios dimensionales. En el caso de la pastilla, provienen principalmente de la acumulaci\u00f3n de productos de fisi\u00f3n en su interior \u2013 hinchamiento.<span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLAK3vMWYAMDXdZ.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAK3vMWYAMDXdZ.jpg\" alt=\"\" width=\"543\" height=\"390\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLAK3vMWYAMDXdZ.jpg\" alt=\"\" width=\"543\" height=\"390\" \/><\/noscript><\/a><\/span>La pastilla se hincha hasta el punto que golpea la pared interior de la vaina, empuj\u00e1ndola hacia fuera. Dicho esto, las pastillas dopadas con Cr<sub>2<\/sub>O<sub>3<\/sub> son capaces de acomodar mejor el golpe, lo que se traduce en una tensi\u00f3n pastilla-vaina menor\ud83d\udcc9<span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLALQkIX0Ac1Ier.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLALQkIX0Ac1Ier.jpg\" alt=\"\" \/><noscript><img decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLALQkIX0Ac1Ier.jpg\" alt=\"\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div id=\"tweet_18\" class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709106155479047\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Actualmente, Westinghouse (EE.UU.) (en colaboraci\u00f3n con la empresa espa\u00f1ola <a class=\"entity-mention\" href=\"https:\/\/twitter.com\/enusa_sa\">@enusa_sa<\/a>) y Framatome (Francia) son los principales proveedores de combustible nuclear trabajando en el desarrollo de vainas de Zircaloy con recubrimiento de cromo y pastillas de UO<sub>2<\/sub> dopadas con Cr<sub>2<\/sub>O<sub>3<\/sub>.<\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709106155479047\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\"><span class=\"entity-image\"><a href=\"https:\/\/pbs.twimg.com\/media\/FLANcDqXEAwB5D3.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLANcDqXEAwB5D3.jpg\" alt=\"\" width=\"602\" height=\"326\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"b-loaded aligncenter\" src=\"https:\/\/pbs.twimg.com\/media\/FLANcDqXEAwB5D3.jpg\" alt=\"\" width=\"602\" height=\"326\" \/><\/noscript><\/a><\/span><\/span><\/div>\n<div class=\"content-tweet allow-preview\" dir=\"auto\" style=\"box-sizing: border-box; font-family: charter, Georgia, Cambria, 'times new roman', Times, serif; font-style: normal; font-size: 1.1875rem; line-height: 1.58; letter-spacing: -0.003em; margin-bottom: 1.25rem; overflow-wrap: break-word; color: #000000; cursor: pointer; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; orphans: 2; text-align: justify; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\" data-controller=\"thread\" data-action=\"click-&gt;thread#showTweet\" data-screenname=\"jjnucleares\" data-tweet=\"1490709106155479047\"><span style=\"font-size: 14pt; font-family: georgia, palatino, serif;\">Por otro lado, Global Nuclear Fuel (General Electric\ud83c\uddfa\ud83c\uddf8 + Hitachi \ud83c\uddef\ud83c\uddf5), otro importante proveedor de combustible nuclear, se centra en el desarrollo de las vainas de FeCrAl.<\/span><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Curiosos y curiosas, bienvenidos a Hilando #NuclearEspa\u00f1a En esta secci\u00f3n del portal web, nuestro equipo de redacci\u00f3n recupera hilos previamente publicados en Twitter, por el inter\u00e9s de su tem\u00e1tica y la calidad de su contenido. Hoy publicamos un hilo doble sobre combustible avanzado y dise\u00f1os evolutivos de J\u00d3VENES NUCLEARES (@jjnucleares): \u00a0 \u00bfQu\u00e9 son los combustibles resistentes a accidentes (#ATF)?\u00a0\u00bfQu\u00e9 ventajas ofrecen respecto al combustible convencional?\u00a0\u00bfQu\u00e9 dise\u00f1os est\u00e1n desarrollando? El combustible nuclear\u00a0de la mayor\u00eda de reactores en operaci\u00f3n est\u00e1 formado por [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":24153,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"mc4wp_mailchimp_campaign":[],"footnotes":""},"categories":[178],"tags":[],"coauthors":[31],"class_list":["post-24108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divulgacion"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Combustible avanzado y dise\u00f1os evolutivos - Divulgaci\u00f3n<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.revistanuclear.es\/en\/divulgacion\/combustible-avanzado-y-disenos-evolutivos\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Combustible avanzado y dise\u00f1os evolutivos - Divulgaci\u00f3n\" \/>\n<meta property=\"og:description\" content=\"Curiosos y curiosas, bienvenidos a Hilando #NuclearEspa\u00f1a En esta secci\u00f3n del portal web, nuestro equipo de redacci\u00f3n recupera hilos previamente publicados en Twitter, por el inter\u00e9s de su tem\u00e1tica y la calidad de su contenido. Hoy publicamos un hilo doble sobre combustible avanzado y dise\u00f1os evolutivos de J\u00d3VENES NUCLEARES (@jjnucleares): \u00a0 \u00bfQu\u00e9 son los combustibles resistentes a accidentes (#ATF)?\u00a0\u00bfQu\u00e9 ventajas ofrecen respecto al combustible convencional?\u00a0\u00bfQu\u00e9 dise\u00f1os est\u00e1n desarrollando? 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