{"id":554,"date":"2019-01-13T01:04:07","date_gmt":"2019-01-13T01:04:07","guid":{"rendered":"http:\/\/johnbrear-plantintegrity.com\/?page_id=554"},"modified":"2019-01-18T20:48:53","modified_gmt":"2019-01-18T20:48:53","slug":"effects-of-a-fire-on-a-nuclear-fuel-transport-flask","status":"publish","type":"page","link":"https:\/\/johnbrear-plantintegrity.com\/?page_id=554","title":{"rendered":"Effects of a fire on a nuclear fuel transport flask"},"content":{"rendered":"<figure id=\"attachment_555\" aria-describedby=\"caption-attachment-555\" style=\"width: 467px\" class=\"wp-caption alignright\"><img fetchpriority=\"high\" decoding=\"async\" src=\"http:\/\/johnbrear-plantintegrity.com\/wp-content\/uploads\/2019\/01\/Transport-flask.jpg\" alt=\"\" width=\"467\" height=\"434\" class=\"size-full wp-image-555\" srcset=\"https:\/\/johnbrear-plantintegrity.com\/wp-content\/uploads\/2019\/01\/Transport-flask.jpg 699w, https:\/\/johnbrear-plantintegrity.com\/wp-content\/uploads\/2019\/01\/Transport-flask-300x279.jpg 300w\" sizes=\"(max-width: 467px) 100vw, 467px\" \/><figcaption id=\"caption-attachment-555\" class=\"wp-caption-text\">Nuclear fuel transport flask<\/figcaption><\/figure>\r\n<p>The objectives were<\/p>\r\n<ul>\r\n    <li>to assess the performance of a nuclear fuel transport flask when subjected to a \u00bd hour 800\u00b0C all engulfing fire, to ensure compliance with International Atomic Energy Agency (IAEA) standards.<\/li>\r\n    <li>in particular to address the integrity of the novel lid sealing mechanism and its ability to contain any release of contents.<\/li>\r\n<\/ul>\r\n<p><br \/>\r\nA Finite Element (FE) model of the flask body, 2-part lid, holding down bolts and associated bolt nuts was created.&#160; The 2-part lid necessitated modelling the dual bolt tightening procedure, first one lid then the other.&#160; The model was validated by comparison of the FE results with those from a full scale pressure test.<\/p>\r\n<p>The analysis was highly non-linear due to the presence of contact elements modelling interfaces between components, radiation and convection loads from the fire and the resulting elastic-plastic response of the flask.<\/p>\r\n<p>A Cray super-computer was engaged for the analysis, and considerable runtimes were required.<br \/>\r\n<br \/>\r\nThe structure was predicted to reach 650\u00b0C and large parts were seen to respond plastically.&#160; Analysis confirmed the integrity of the lid sealing mechanism under the fire conditions modelled and temperatures at sealing locations were found to be within acceptable levels<br \/>\r\n<br \/>\r\nThis work confirmed the design without the need for an expensive fire test, which would have been difficult to control and monitor.<\/p>\r\n<p>Sensitivity studies were performed on the input variables so as to establish what actual conditions might cause failure of the sealing mechanism.<\/p>","protected":false},"excerpt":{"rendered":"<p>The objectives were to assess the performance of a nuclear fuel transport flask when subjected to a \u00bd hour 800\u00b0C all engulfing fire, to ensure compliance with International Atomic Energy Agency (IAEA) standards. in particular to address the integrity of the novel lid sealing mechanism and its ability to contain any release of contents. A &hellip; <a href=\"https:\/\/johnbrear-plantintegrity.com\/?page_id=554\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Effects of a fire on a nuclear fuel transport flask<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":107,"menu_order":11,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-554","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=\/wp\/v2\/pages\/554","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=554"}],"version-history":[{"count":2,"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=\/wp\/v2\/pages\/554\/revisions"}],"predecessor-version":[{"id":557,"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=\/wp\/v2\/pages\/554\/revisions\/557"}],"up":[{"embeddable":true,"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=\/wp\/v2\/pages\/107"}],"wp:attachment":[{"href":"https:\/\/johnbrear-plantintegrity.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}