{"id":10742,"date":"2023-05-23T09:13:56","date_gmt":"2023-05-23T07:13:56","guid":{"rendered":"https:\/\/sceaux-lagazette.fr\/?p=10742"},"modified":"2023-05-23T09:13:57","modified_gmt":"2023-05-23T07:13:57","slug":"nucleaire-civil-nucleaire-militaire","status":"publish","type":"post","link":"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/05\/23\/nucleaire-civil-nucleaire-militaire\/","title":{"rendered":"Nucl\u00e9aire civil, nucl\u00e9aire militaire"},"content":{"rendered":"\n<p>Historiquement, de nombreux militants antinucl\u00e9aires ont d\u2019abord milit\u00e9 contre la bombe atomique. Puis contre le nucl\u00e9aire civil. C\u2019est particuli\u00e8rement le cas de l\u2019association Greenpeace. En France, les fili\u00e8res nucl\u00e9aires civiles et militaires se sont s\u00e9par\u00e9es depuis plus de 40 ans.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pour les antinucl\u00e9aires, deux applications indissociables<\/h2>\n\n\n\n<p>Le nucl\u00e9aire civil est-il la porte ouverte \u00e0 la bombe atomique&nbsp;?&nbsp; C\u2019est ce qui a \u00e9t\u00e9 \u00e9voqu\u00e9 dans <a href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/04\/17\/debats-autour-du-nucleaire\/\" target=\"_blank\" rel=\"noreferrer noopener\">le d\u00e9bat pr\u00e9c\u00e9dent<\/a>. On trouve d\u2019ailleurs <a href=\"https:\/\/www.sortirdunucleaire.org\/Nucleaire-militaire\" target=\"_blank\" rel=\"noreferrer noopener\">sur un site antinucl\u00e9aire<\/a> une affirmation en ce sens&nbsp;: <em>l\u2019arm\u00e9e a besoin des centrales nucl\u00e9aires pour fabriquer ses engins de mort<\/em>. Dans une<a href=\"https:\/\/twitter.com\/CaronAymericoff\/status\/1658533859766460434\" target=\"_blank\" rel=\"noreferrer noopener\"> intervention r\u00e9cente<\/a> \u00e0 l\u2019Assembl\u00e9e nationale, le d\u00e9put\u00e9 Aymeric Caron a encore fait ce rapprochement.<\/p>\n\n\n\n<p>On rappellera aux Sc\u00e9ens qu\u2019en 1939, <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Fr%C3%A9d%C3%A9ric_Joliot-Curie\" target=\"_blank\" rel=\"noreferrer noopener\">Fr\u00e9d\u00e9ric Joliot Curie<\/a>, prix Nobel et futur dirigeant du CEA, d\u00e9pose trois brevets. Deux d\u00e9taillent une m\u00e9thode pour produire de l\u2019\u00e9lectricit\u00e9 et le troisi\u00e8me un moyen pour un explosif atomique. D\u00e8s l\u2019origine, nucl\u00e9aire civil et militaire s\u2019appuient sur les m\u00eames outils scientifiques.<\/p>\n\n\n\n<p>En France, le <a href=\"https:\/\/www.cea.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">Commissariat \u00e0 l\u2019\u00e9nergie atomique <\/a>(CEA) a \u00e9t\u00e9 cr\u00e9\u00e9 en 1945 pour <em>mettre en \u0153uvre un projet politique majeur \u2013 d\u00e9velopper toutes les applications issues des sciences de l\u2019atome<\/em> \u2013.<\/p>\n\n\n\n<p>La Gazette a rapport\u00e9 <a href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2022\/02\/24\/le-nucleaire-au-cafe\/\" target=\"_blank\" rel=\"noreferrer noopener\">une s\u00e9ance du Caf\u00e9 Histoire<\/a> o\u00f9 intervenait Michel Labrousse, ancien ing\u00e9nieur au CEA et militant antinucl\u00e9aire connu. Il y affirmait&nbsp;: \u00ab&nbsp;<em>Mon point de vue est qu\u2019on ne peut pas dissocier le nucl\u00e9aire militaire et le nucl\u00e9aire civil \u00bb<\/em>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Un peu d\u2019histoire et de physique<\/h2>\n\n\n\n<p>C\u2019est la mise en \u00e9vidence de la r\u00e9action en cha\u00eene par Otto Hahn et Fritz Strassmann d\u00e9but 1939 qui permet \u00e0 Joliot-Curie de d\u00e9poser ses brevets. Cependant cette r\u00e9action doit s\u2019emballer dans la bombe et \u00eatre contr\u00f4l\u00e9e pour produire de l\u2019\u00e9lectricit\u00e9. Cela conduit \u00e0 utiliser un uranium contenant plus de 90% d\u2019U235, dans le premier cas, et 2,7% dans le second cas.<\/p>\n\n\n\n<p>La bombe d\u2019Hiroshima contenait de l\u2019uranium, celle de Nagasaki du plutonium 239. Il y a donc deux solutions pour une bombe A. Le plutonium 239 est un sous-produit de la fission de l\u2019uranium.<\/p>\n\n\n\n<p>Pour construire ces deux bombes, il a fallu mettre en place des appareils de s\u00e9paration isotopique de l\u2019U235 et de l\u2019U238. Pour celle au plutonium, il a fallu construire un r\u00e9acteur nucl\u00e9aire, puisque le plutonium est un sous-produit de la r\u00e9action en cha\u00eene de l\u2019uranium. Le 2 d\u00e9cembre 1942, une \u00e9quipe men\u00e9e par <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Enrico_Fermi\" target=\"_blank\" rel=\"noreferrer noopener\">Enrico Fermi<\/a> d\u00e9clencha la premi\u00e8re r\u00e9action en cha\u00eene nucl\u00e9aire artificielle dans un r\u00e9acteur exp\u00e9rimental appel\u00e9 \u00ab Chicago Pile-1.<\/p>\n\n\n\n<p>Pour <a href=\"https:\/\/www.sfen.org\/rgn\/histoire-developpement-nucleaire-militaire-civil-exception-francaise\/\" target=\"_blank\" rel=\"noreferrer noopener\">r\u00e9aliser son programme nucl\u00e9aire,<\/a> la France construira elle aussi un petit r\u00e9acteur nucl\u00e9aire, la pile Zo\u00e9, implant\u00e9e \u00e0 Fontenay-aux-Roses. Une seconde pile est ensuite construite \u00e0 Saclay. Il s\u2019agit de r\u00e9acteurs de la fili\u00e8re uranium graphite. Laquelle aboutira \u00e0 l\u2019explosion de la premi\u00e8re bombe fran\u00e7aise en 1960. Les r\u00e9acteurs civils destin\u00e9s \u00e0 la production d\u2019\u00e9lectricit\u00e9 vont suivre dans les ann\u00e9es 60, sous la houlette d\u2019EDF.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Une s\u00e9paration progressive<\/h2>\n\n\n\n<p>Il s\u2019agira ensuite de d\u00e9velopper un programme civil capable de pallier l\u2019absence de ressources carbon\u00e9es en France. <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Histoire_du_programme_nucl%C3%A9aire_militaire_de_la_France\" target=\"_blank\" rel=\"noreferrer noopener\">Selon Wikip\u00e9dia<\/a>, <em>deux positions vont alors s\u2019affronter : celle du CEA, qui pr\u00e9conise la fili\u00e8re nationale bic\u00e9phale (civile et militaire) UNGG, et celle d&rsquo;EDF, qui souhaite d\u00e9velopper la fili\u00e8re \u00ab am\u00e9ricaine \u00bb (uranium enrichi et eau l\u00e9g\u00e8re) plus comp\u00e9titive. Le 15 novembre 1968, la commission de l\u2019\u00e9nergie recommande de baser le choix de fili\u00e8re sur des crit\u00e8res \u00e9conomiques et de Gaulle se r\u00e9signe \u00e0 l&rsquo;in\u00e9luctable. C&rsquo;est cependant \u00e0 son successeur nouvellement \u00e9lu, Georges Pompidou, et au gouvernement Jacques Chaban-Delmas que revient la responsabilit\u00e9 d&rsquo;abandonner officiellement la fili\u00e8re nationale au profit des r\u00e9acteurs \u00e0 eau l\u00e9g\u00e8re, par d\u00e9cision interminist\u00e9rielle du 13 novembre 1969.<\/em><\/p>\n\n\n\n<p>Cela fait donc 53 ans que la s\u00e9paration des fili\u00e8res civiles et militaires a \u00e9t\u00e9 act\u00e9e en France. Cette s\u00e9paration n\u2019est pas th\u00e9orique, mais pratique.<\/p>\n\n\n\n<p><a href=\"https:\/\/doseequivalentbanana.home.blog\/2020\/06\/27\/le-nucleaire-civil-et-militaire-deux-freres\/\" target=\"_blank\" rel=\"noreferrer noopener\">Dans un article<\/a>, <a href=\"https:\/\/www.sfen.org\/wp-content\/uploads\/2021\/10\/RGN_Portraits_pour_site_Kamin.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Tristan Kamin<\/a>, ing\u00e9nieur en suret\u00e9 nucl\u00e9aire, explique pourquoi les r\u00e9acteurs de la fili\u00e8re \u00e0 eau pressuris\u00e9e ne peuvent servir pour le militaire. Le plutonium 239 qui sert \u00e0 fabriquer la bombe est bien produit lors de la fission de l\u2019uranium. Cependant, s\u2019il reste dans un environnement producteur de neutrons, de nouvelles r\u00e9actions vont produire d\u2019autres isotopes : plutonium 240,241 ou 242. Or ces isotopes ont une faible stabilit\u00e9 et ne peuvent \u00eatre utilis\u00e9s pour une bombe : seul un plutonium 239 pur est dit de \u00ab qualit\u00e9 militaire \u00bb. Le plutonium produit dans les r\u00e9acteurs \u00e0 eau pressuris\u00e9e comprend trop d&rsquo;autres isotopes et est donc impropre \u00e0 la fabrication d\u2019une bombe.<\/p>\n\n\n\n<p>La configuration des r\u00e9acteurs de la fili\u00e8re graphite gaz permettait de sortir une partie des \u00e9l\u00e9ments combustibles avant que le PU 239 se transforme. Ce n\u2019est pas le cas avec la fili\u00e8re eau pressuris\u00e9e. Il faudrait arr\u00eater en permanence le r\u00e9acteur ce qui est \u00e9videmment anti\u00e9conomique. Dit autrement, et pour prendre un exemple, la Chine, <a href=\"https:\/\/sceaux-lagazette.fr\/index.php\/2023\/04\/17\/debats-autour-du-nucleaire\/\" target=\"_blank\" rel=\"noreferrer noopener\">cit\u00e9e dans le d\u00e9bat pr\u00e9c\u00e9dent<\/a>, n\u2019a strictement aucun int\u00e9r\u00eat \u00e0 utiliser ses r\u00e9acteurs civils pour produire son plutonium militaire. Il est beaucoup plus simple d\u2019avoir des r\u00e9acteurs uniquement consacr\u00e9s \u00e0 cet objectif (ce qu\u2019elle a \u00e9videmment).<\/p>\n\n\n\n<p>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<\/p>\n\n\n\n<p>Pour en savoir plus&nbsp;: <a href=\"https:\/\/doseequivalentbanana.home.blog\/2020\/06\/27\/le-nucleaire-civil-et-militaire-deux-freres\/\" target=\"_blank\" rel=\"noreferrer noopener\">l\u2019article de Tristan Kamin<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Historiquement, de nombreux militants antinucl\u00e9aires ont d\u2019abord milit\u00e9 contre la bombe atomique. Puis contre le nucl\u00e9aire civil. C\u2019est particuli\u00e8rement le cas de l\u2019association Greenpeace. En France, les fili\u00e8res nucl\u00e9aires civiles et militaires se sont s\u00e9par\u00e9es depuis plus de 40 ans. Pour les antinucl\u00e9aires, deux applications indissociables Le nucl\u00e9aire civil est-il&#8230;<\/p>\n","protected":false},"author":11,"featured_media":10747,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[53],"tags":[],"class_list":["post-10742","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analyses","entry","simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nucl\u00e9aire civil, nucl\u00e9aire militaire - La Gazette<\/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:\/\/sceaux-lagazette.fr\/index.php\/2023\/05\/23\/nucleaire-civil-nucleaire-militaire\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nucl\u00e9aire civil, nucl\u00e9aire militaire - La Gazette\" \/>\n<meta property=\"og:description\" content=\"Historiquement, de nombreux militants antinucl\u00e9aires ont d\u2019abord milit\u00e9 contre la bombe atomique. Puis contre le nucl\u00e9aire civil. C\u2019est particuli\u00e8rement le cas de l\u2019association Greenpeace. En France, les fili\u00e8res nucl\u00e9aires civiles et militaires se sont s\u00e9par\u00e9es depuis plus de 40 ans. 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