{"id":27677,"date":"2025-11-17T11:05:29","date_gmt":"2025-11-17T10:05:29","guid":{"rendered":"https:\/\/bgz.de\/skeleton-bestimmung-des-materialverhaltens-bestrahlter-brennelementstrukturteile\/"},"modified":"2026-04-29T12:45:34","modified_gmt":"2026-04-29T10:45:34","slug":"skeleton-determination-of-the-material-behaviour-of-irradiated-fuel-assembly-structural-parts","status":"publish","type":"page","link":"https:\/\/bgz.de\/en\/skeleton-determination-of-the-material-behaviour-of-irradiated-fuel-assembly-structural-parts\/","title":{"rendered":"SKELETON \u2013 Determination of the material behaviour of irradiated fuel assembly structural parts"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-w4vtr1-317b9988e3386fc6fc6823d855a15ea4\">\n.avia-section.av-w4vtr1-317b9988e3386fc6fc6823d855a15ea4{\nbackground-color:#0d57a0;\nbackground-image:unset;\n}\n<\/style>\n<div id='headerrot'  class='avia-section av-w4vtr1-317b9988e3386fc6fc6823d855a15ea4 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_codeblock  avia-builder-el-first  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-27677'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m8oi00o9-f1baeb38fc0d698a22a4ef99caaf4eb4\">\n.av_textblock_section.av-m8oi00o9-f1baeb38fc0d698a22a4ef99caaf4eb4{\nbackground-color:#0d57a0;\n}\n#top .av_textblock_section.av-m8oi00o9-f1baeb38fc0d698a22a4ef99caaf4eb4 .avia_textblock{\ncolor:#ffffff;\n}\n<\/style>\n<section  class='av_textblock_section av-m8oi00o9-f1baeb38fc0d698a22a4ef99caaf4eb4 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><h1 class=\"h3gestaltung\"><strong>SKELETON \u2013 Determination of the material behaviour of irradiated fuel assembly structural parts<\/strong><\/h1>\n<\/div><\/section>\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id='after_section_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-27677'><div class='entry-content-wrapper clearfix'>\n\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2upq1p-f9c078ecbc5533a06891da754eb514b7\">\n#top .hr.hr-invisible.av-2upq1p-f9c078ecbc5533a06891da754eb514b7{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-2upq1p-f9c078ecbc5533a06891da754eb514b7 hr-invisible  avia-builder-el-3  el_after_av_codeblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-6oeddkt-ad70972e3305fd5720e199a85422d4a2 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><div class=\"anleser\">The integrity of a fuel element (FE) depends crucially on the load-bearing capacity of the structural components. These include the FE head and base, spacers, water channels (for BWR-FE) and control rod guide tubes (for PWR-FE), which form the load-bearing structure. After the fuel rods, the structural parts receive the highest radiation doses and are exposed to particular stresses due to their function. The SKELETON research project evaluates the mechanical integrity of structural parts of irradiated light water fuel elements (LWR-FE).<\/div>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mi3hqvff-ee996fc04c341517945bf13d55eb70b2\">\n#top .av_textblock_section.av-mi3hqvff-ee996fc04c341517945bf13d55eb70b2 .avia_textblock{\ncolumn-count:2;\ncolumn-gap:15 em;\n}\n\n@media only screen and (max-width: 479px){ \n#top .av_textblock_section.av-mi3hqvff-ee996fc04c341517945bf13d55eb70b2 .avia_textblock{\ncolumn-count:1;\n}\n.av_textblock_section.av-mi3hqvff-ee996fc04c341517945bf13d55eb70b2 .avia_textblock.av_multi_colums > p:first-child{\nmargin-top:0.85em;\n}\n}\n<\/style>\n<section  class='av_textblock_section av-mi3hqvff-ee996fc04c341517945bf13d55eb70b2 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_multi_colums'  itemprop=\"text\" ><p>SKELETON combines the processing of existing test data with new investigations on irradiated FE structural components. First of all, the results of experiments that have already been carried out are systematically evaluated in order to create a reliable database on the behaviour of PWR control rod guide tubes. In addition, samples from a water channel of a BWR-FE used in a German nuclear power plant are analysed in the hot cells of Framatome GmbH. This includes measurements of fracture toughness, complete stress-strain curves and determination of the hydrogen content. Heat treatment simulates the conditions of dry interim storage, and the resulting material changes are analysed and recorded.<\/p>\n<p>The characteristic values obtained experimentally are incorporated into the development of physically consistent material models, which are implemented in a numerical simulation environment. By comparing the simulation results with the measurement data obtained and with established fuel performance codes, a validated tool is created that realistically depicts typical load scenarios during transport, interim storage and handling.<\/p>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mojxhgpl-b2ea8bf5ec9241c16e26395e7ef03a09\">\n#top .hr.av-mojxhgpl-b2ea8bf5ec9241c16e26395e7ef03a09{\nmargin-top:30px;\nmargin-bottom:30px;\n}\n.hr.av-mojxhgpl-b2ea8bf5ec9241c16e26395e7ef03a09 .hr-inner{\nwidth:100px;\nborder-color:#0d57a0;\n}\n<\/style>\n<div  class='hr av-mojxhgpl-b2ea8bf5ec9241c16e26395e7ef03a09 hr-custom  avia-builder-el-6  el_after_av_textblock  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-mojxhp4m-783cdb5b9ed37f74e540ebca74634bd4 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h2 class=\"anleser\">Publications<\/h2>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mojxigm4-3819aa5c1028f51c58dfd5c15f1d6a19\">\n#top .hr.hr-invisible.av-mojxigm4-3819aa5c1028f51c58dfd5c15f1d6a19{\nheight:5px;\n}\n<\/style>\n<div  class='hr av-mojxigm4-3819aa5c1028f51c58dfd5c15f1d6a19 hr-invisible  avia-builder-el-8  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-mojxhzkp-f164ecc69c91911c373e2d78c5c135f3 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><ul>\n<li><a href=\"https:\/\/doi.org\/10.69152\/BGZFachworkshop\/proceedings\/2025\"><strong>SKELETON: Untersuchungen an Brennelement\u2010Strukturteilen<\/strong><\/a>, Felix Boldt, Dr. Christoph Jagfeld, Dr. Okan Yetik, Proceedings 4. Fachworkshop Zwischenlagerung, BGZ Gesellschaft f\u00fcr Zwischenlagerung, DOI 10.69152\/BGZFachworkshop\/proceedings\/2025, 2025.<\/li>\n<\/ul>\n<\/div><\/section>\n<div  class='hr av-n0h7wt-b427d3dc174dc851d394752ee63a23e9 hr-default  avia-builder-el-10  el_after_av_textblock  el_before_av_buttonrow '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<div  class='avia-buttonrow-wrap av-mm4wmlcy-826fec3acb7ee9bf145a09e0d251b1d1 avia-buttonrow-left  avia-builder-el-11  el_after_av_hr  el_before_av_hr '>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mm4wlsta-2b7584bb6c4415000759d87eb1b6d063\">\n#top #wrap_all .avia-button.av-mm4wlsta-2b7584bb6c4415000759d87eb1b6d063{\nmargin-bottom:5px;\nmargin-right:5px;\n}\n<\/style>\n<a href='#top'  class='avia-button av-mm4wlsta-2b7584bb6c4415000759d87eb1b6d063 avia-icon_select-no avia-size-small avia-color-theme-color'   aria-label=\"To top\"><span class='avia_iconbox_title' >To top<\/span><\/a>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mm4wmkta-97637c402256eda0cee543a43fe3be03\">\n#top #wrap_all .avia-button.av-mm4wmkta-97637c402256eda0cee543a43fe3be03{\nmargin-bottom:5px;\nmargin-right:5px;\n}\n<\/style>\n<a href='\/en\/research-programme\/'  class='avia-button av-mm4wmkta-97637c402256eda0cee543a43fe3be03 avia-icon_select-no avia-size-small avia-color-theme-color'   aria-label=\"All research activities\"><span class='avia_iconbox_title' >All research activities<\/span><\/a>\n<\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3pwu59-85770930f4ee5df96e266abaadeb45ae\">\n#top .hr.hr-invisible.av-3pwu59-85770930f4ee5df96e266abaadeb45ae{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-3pwu59-85770930f4ee5df96e266abaadeb45ae hr-invisible  avia-builder-el-12  el_after_av_buttonrow  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-27677","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - 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