{"id":119229,"date":"2023-01-19T18:43:26","date_gmt":"2023-01-19T17:43:26","guid":{"rendered":"https:\/\/material-properties.org\/o-que-e-retencao-no-vaso-definicao\/"},"modified":"2023-01-20T09:55:29","modified_gmt":"2023-01-20T08:55:29","slug":"o-que-e-retencao-no-vaso-definicao","status":"publish","type":"post","link":"https:\/\/material-properties.org\/pt-br\/o-que-e-retencao-no-vaso-definicao\/","title":{"rendered":"O que \u00e9 reten\u00e7\u00e3o no vaso &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">A reten\u00e7\u00e3o no vaso pode ser alcan\u00e7ada pela inunda\u00e7\u00e3o total da cavidade do reator para resfriar a parede externa da cabe\u00e7a inferior, evitando assim a falha estrutural por ruptura por flu\u00eancia.<\/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>No que diz respeito \u00e0 seguran\u00e7a das Usinas Nucleares (NPP) em caso de acidente nuclear grave, um dos principais desafios associados \u00e9 a reten\u00e7\u00e3o do combust\u00edvel nuclear fundido e do interior do reator, denominado c\u00f3rio, dentro do Vaso de Press\u00e3o do Reator (RPV). Uma das maneiras de resfriar o c\u00f3rio no RPV \u00e9 resfriando o vaso por fora.\u00a0A reten\u00e7\u00e3o no vaso pode ser conseguida pela inunda\u00e7\u00e3o total da cavidade do reator para resfriar a parede externa da cabe\u00e7a inferior, evitando assim a falha estrutural por ruptura por flu\u00eancia.\u00a0Esta estrat\u00e9gia \u00e9 denominada\u00a0<\/span><strong><span>Reten\u00e7\u00e3o In-Vessel <\/span><\/strong><span>(IVR).\u00a0No caso da estrat\u00e9gia de Reten\u00e7\u00e3o In-Vessel (IVR), espera-se que a po\u00e7a de c\u00f3rio seja cercada por uma crosta de \u00f3xido, que estar\u00e1 em contato com o a\u00e7o fundido tanto no topo da po\u00e7a quanto nas laterais do vaso.\u00a0A aplica\u00e7\u00e3o desta abordagem a grandes reatores de pot\u00eancia n\u00e3o \u00e9 trivial devido ao tempo relativamente curto entre a detec\u00e7\u00e3o do derretimento do n\u00facleo e a falha da cabe\u00e7a inferior.<\/span><\/p>\n<\/div><\/div>\n<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<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>Refer\u00eancias:<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n<p><span>Ci\u00eancia de materiais:<\/span><\/p>\n<ol>\n<li><span>Departamento de Energia dos EUA, Ci\u00eancia de Materiais.\u00a0DOE Fundamentals Handbook, Volume 1 e 2. Janeiro de 1993.<\/span><\/li>\n<li><span>Departamento de Energia dos EUA, Ci\u00eancia de Materiais.\u00a0DOE Fundamentals Handbook, Volume 2 e 2. Janeiro de 1993.<\/span><\/li>\n<li><span>William D. Callister, David G. Rethwisch.\u00a0Ci\u00eancia e Engenharia de Materiais: Uma Introdu\u00e7\u00e3o 9\u00aa Edi\u00e7\u00e3o, Wiley;\u00a09 edi\u00e7\u00e3o (4 de dezembro de 2013), ISBN-13: 978-1118324578.<\/span><\/li>\n<li><span>Eberhart, Mark (2003).\u00a0Por que as coisas quebram: entendendo o mundo pela maneira como ele se desfaz.\u00a0Harmonia.\u00a0ISBN 978-1-4000-4760-4.<\/span><\/li>\n<li><span>Gaskell, David R. (1995).\u00a0Introdu\u00e7\u00e3o \u00e0 Termodin\u00e2mica dos Materiais (4\u00aa ed.).\u00a0Editora Taylor e Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><\/li>\n<li><span>Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Uma Introdu\u00e7\u00e3o \u00e0 Ci\u00eancia dos Materiais.\u00a0Princeton University Press.\u00a0ISBN 978-0-691-07097-1.<\/span><\/li>\n<li><span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Materiais: engenharia, ci\u00eancia, processamento e design (1\u00aa ed.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><\/li>\n<li><span>JR Lamarsh, AJ Baratta, Introdu\u00e7\u00e3o \u00e0 Engenharia Nuclear, 3\u00aa ed., Prentice-Hall, 2001, ISBN: 0-201-82498-1.<\/span><\/li>\n<\/ol>\n<\/div><\/div><\/div><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/div><\/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>Veja acima:<\/span><br \/>\n<span>Problemas de material<a href=\"https:\/\/material-properties.org\" class=\"su-button su-button-style-flat\" style=\"color:#606060;background-color:#ffffff;border-color:#cccccc;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\"><i class=\"sui sui-link\" style=\"font-size:16px;color:#5d5d5d\"><\/i> <\/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>Esperamos que este artigo,\u00a0<\/span><strong><span>Reten\u00e7\u00e3o no vaso<\/span><\/strong><span>, o ajude.\u00a0Se sim,\u00a0<\/span><strong><span>d\u00ea um like<\/span><\/strong><span>\u00a0na barra lateral.\u00a0O objetivo principal deste site \u00e9 ajudar o p\u00fablico a aprender algumas informa\u00e7\u00f5es interessantes e importantes sobre materiais e suas propriedades.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Esperamos que este artigo,\u00a0Reten\u00e7\u00e3o no vaso, o ajude.\u00a0Se sim,\u00a0d\u00ea um like\u00a0na barra lateral.\u00a0O objetivo principal deste site \u00e9 ajudar o p\u00fablico a aprender algumas informa\u00e7\u00f5es interessantes e importantes sobre materiais e suas propriedades. &nbsp;<\/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 - 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