{"id":575,"date":"2010-03-05T19:03:00","date_gmt":"2010-03-05T18:03:00","guid":{"rendered":"http:\/\/qryergb.cluster131.hosting.ovh.net\/?p=575"},"modified":"2026-09-05T09:45:57","modified_gmt":"2026-09-05T07:45:57","slug":"lobservatoire-du-nucleaire-rend-publics-des-documents-explosifs-sur-le-reacteur-epr","status":"publish","type":"post","link":"https:\/\/www.observatoire-du-nucleaire.org\/?p=575","title":{"rendered":"L\u2019Observatoire du nucl\u00e9aire rend publics des documents explosifs sur le r\u00e9acteur EPR"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"194\" src=\"https:\/\/www.observatoire-du-nucleaire.org\/wp-content\/uploads\/2026\/09\/chantier-epr-fla-81c3c-pcw5spizky.jpg\" alt class=\"wp-image-828\" srcset=\"https:\/\/www.observatoire-du-nucleaire.org\/wp-content\/uploads\/2026\/09\/chantier-epr-fla-81c3c-pcw5spizky.jpg 500w, https:\/\/www.observatoire-du-nucleaire.org\/wp-content\/uploads\/2026\/09\/chantier-epr-fla-81c3c-pcw5spizky-300x116.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/figure>\n<p class=\"wp-block-paragraph\">Alors que la Commissions natio\u00adnale du d\u00e9bat public (CNDP) annonce pour le 24 mars 2010 l\u2019ouverture du D\u00e9bat public sur le pro\u00adjet de r\u00e9ac\u00adteur EPR envi\u00adsa\u00adg\u00e9 \u00e0&nbsp;Penly (Seine-Maritime), l\u2019Observatoire du nucl\u00e9aire rend publics plu\u00adsieurs docu\u00adments explo\u00adsifs sur l\u2019EPR&nbsp;:<\/p>\n<ul class=\"wp-block-list\"><li> <a class=\"spip_in\" type=\"application\/pdf\">une note expli\u00adca\u00adtive<\/a>. Extrait&nbsp;: <i>\u00ab&nbsp;A&nbsp;l\u2019heure actuelle il sem\u00adble\u00adrait qu\u2019aucune d\u00e9marche n\u2019ait \u00e9t\u00e9 entre\u00adprise et le dimen\u00adsion\u00adne\u00adment de pro\u00adtec\u00adtions EPR semble suc\u00adcinct (\u2026)&nbsp;\u00bb<\/i>.<\/li>\n<li> <a class=\"spip_in\" type=\"application\/pdf\">une note tech\u00adnique d\u2019EDF<\/a> \u00e9vo\u00adquant l\u2019\u00ab&nbsp;l\u2019EDG FA3&nbsp;\u00bb. Explication&nbsp;: FA3 est le dimi\u00adnu\u00adtif de Flamanville 3 (c\u2019est \u00e0&nbsp;dire de l\u2019EPR, actuel\u00adle\u00adment en chan\u00adtier) et EDG est l\u2019acronyme de l\u2019accident \u00ab&nbsp;Ejection de grappe&nbsp;\u00bb. Les grappes ser\u00advant \u00e0&nbsp;contr\u00f4\u00adler la puis\u00adsance du r\u00e9ac\u00adteur, \u00e0&nbsp;le pilo\u00adter. Ce sont \u00e0&nbsp;la fois l\u2019acc\u00e9l\u00e9rateur et le frein. L\u2019accident d\u2019\u00e9jection de grappe peut se com\u00adpa\u00adrer au blo\u00adcage de l\u2019acc\u00e9l\u00e9rateur. A&nbsp;fond.<\/li>\n<li> <a class=\"spip_in\" type=\"application\/pdf\">Une \u00e9tude<\/a> dans laquelle les ing\u00e9\u00adnieurs d\u2019EDF ont iden\u00adti\u00adfi\u00e9 \u00ab&nbsp;l\u2019accident d\u2019\u00e9jection de grappe&nbsp;\u00bb comme \u00ab&nbsp;poten\u00adtiel\u00adle\u00adment pro\u00adbl\u00e9\u00adma\u00adtique pour EPR&nbsp;\u00bb. Il est ques\u00adtion de \u00ab&nbsp;d\u00e9pas\u00adse\u00adments tr\u00e8s signi\u00adfi\u00adca\u00adtifs&nbsp;\u00bb du \u00ab&nbsp;cri\u00adt\u00e8re de nombre de crayons [com\u00adbus\u00adtible] en crise d\u2019\u00e9bullition&nbsp;\u00bb. De \u00ab&nbsp;20 \u00e0&nbsp;30%&nbsp;\u00bb du com\u00adbus\u00adtible pour\u00adrait alors se rompre en cas d\u2019accident.<\/li>\n<li> <a class=\"spip_in\" type=\"application\/pdf\">Une note d\u2019\u00e9tude d\u2019EDF d\u2019avril 2004<\/a> qui indique que la puis\u00adsance de l\u2019EPR serait, dans un pre\u00admier temps, inf\u00e9\u00adrieure de 180 MWe \u00e0&nbsp;celle d\u00e9cla\u00adr\u00e9e dans le Rapport pr\u00e9\u00adli\u00admi\u00adnaire de s\u00fbret\u00e9<\/li>\n<li> <a class=\"spip_in\" type=\"application\/pdf\">Un docu\u00adment d\u2019EDF<\/a> qui explique que \u00ab&nbsp;la voca\u00adtion de l\u2019EPR est de per\u00admettre le pas\u00adsage (\u00e0 moyen terme) \u00e0&nbsp;un niveau de puis\u00adsance de 4&nbsp;500 MWth&nbsp;\u00bb<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Alors que la Commissions natio\u00adnale du d\u00e9bat public (CNDP) annonce pour le 24 mars 2010 l\u2019ouverture du D\u00e9bat public sur le pro\u00adjet de r\u00e9ac\u00adteur EPR envi\u00adsa\u00adg\u00e9 \u00e0&nbsp;Penly (Seine-Maritime), l\u2019Observatoire du nucl\u00e9aire rend publics plu\u00adsieurs docu\u00adments explo\u00adsifs sur l\u2019EPR&nbsp;:<\/p>\n","protected":false},"author":0,"featured_media":828,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-575","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-communiques"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - 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