{"id":1256,"date":"2016-06-03T13:42:32","date_gmt":"2016-06-03T12:42:32","guid":{"rendered":"http:\/\/www.ecoloj.be\/goforclimatejustice\/jump\/?p=1256"},"modified":"2022-11-21T10:55:20","modified_gmt":"2022-11-21T09:55:20","slug":"energie-le-futur-du-nucleaire","status":"publish","type":"post","link":"https:\/\/www.ecoloj.be\/goforclimatejustice\/jump\/energie-le-futur-du-nucleaire\/","title":{"rendered":"Le futur du nucl\u00e9aire"},"content":{"rendered":"<p style=\"text-align: left;\"><strong><span style=\"color: #333333;\">Si en Belgique, la sortie du nucl\u00e9aire (qu&rsquo;\u00e9colo j soutient) a \u00e9t\u00e9 d\u00e9cid\u00e9e par la loi du 31 janvier 2003, le secteur du nucl\u00e9aire mondial s\u2019achemine quant \u00e0 lui depuis quelques ann\u00e9es vers quatre autres voies :<\/span><\/strong><\/p>\n<p style=\"text-align: left;\"><!--more--><\/p>\n<h2 style=\"text-align: left;\"><span style=\"text-decoration: underline; color: #99cc00;\">La prolongation<\/span><\/h2>\n<p style=\"text-align: left;\">Assur\u00e9ment la plus risqu\u00e9e. Il est vrai que de nombreuses parties de centrales sont renouvel\u00e9es ou am\u00e9lior\u00e9es avant toute prolongation. Mais, d\u2019un autre c\u00f4t\u00e9, des parties tr\u00e8s sensibles ne pourront jamais \u00eatre remplac\u00e9es et la fiabilit\u00e9 de ces vieilles centrales laisse, aujourd\u2019hui, clairement \u00e0 d\u00e9sirer.<\/p>\n<h2 style=\"text-align: left;\"><span style=\"text-decoration: underline; color: #99cc00;\">Les nouveaux r\u00e9acteurs EPR<\/span><\/h2>\n<p style=\"text-align: left;\">Les <em>European Pressurized Reactor<\/em> sont th\u00e9oriquement plus s\u00fbrs, mais leur gigantisme rend leur co\u00fbt absolument impayable tout en rendant notre approvisionnement \u00e9lectrique encore plus centralis\u00e9\u00a0: le contraire de ce qu\u2019il faudrait faire. Ceux actuellement en construction (Flamanville, Olkiluoto) accumulent les retards, les probl\u00e8mes importants et aucun n\u2019a encore \u00e9t\u00e9 mis en service. Le r\u00e9acteur de Flamanville met en danger financi\u00e8rement son concepteur Areva qui a d\u00fb \u00eatre recapitalis\u00e9 par l&rsquo;\u00c9tat fran\u00e7ais.<\/p>\n<h2 style=\"text-align: left;\"><span style=\"text-decoration: underline; color: #99cc00;\">Les SMR<\/span><\/h2>\n<p style=\"text-align: left;\">Les <em>Small Modular Reactor<\/em> sont essentiellement pens\u00e9s pour co\u00fbter moins cher \u00e0 construire et \u00e0 entretenir\u00a0 : petits, standardis\u00e9s et construits en s\u00e9rie. Ce sont des <em>anti-EPR<\/em>. Mais ils restent bas\u00e9s sur la m\u00eame technologie qui cr\u00e9e des d\u00e9chets et comporte des risques. Par ailleurs, s\u2019il est certain qu\u2019ils seront plus faciles \u00e0 construire, leur moindre co\u00fbt reste encore th\u00e9orique.<\/p>\n<h2 style=\"text-align: left;\"><span style=\"text-decoration: underline; color: #99cc00;\">La \ufb01ssion liquide<\/span><\/h2>\n<p style=\"text-align: left;\">Elle n\u2019est pas totalement nouvelle. Le proc\u00e9d\u00e9 existe depuis les ann\u00e9es 60 o\u00f9 un prototype \u00e9tait test\u00e9 au <em>Oak Ridge National Laboratory<\/em>. Mais on n&rsquo;a jamais mis en service de r\u00e9acteur commercial. Sans d\u00e9bouch\u00e9s militaires, en pleine guerre froide, il \u00e9tait malheureusement difficile d\u2019obtenir des budgets. Cela dit, depuis quelques ann\u00e9es, les chercheurs ont r\u00e9emprunt\u00e9 cette voie et ont nettement am\u00e9lior\u00e9 le processus pour le rendre tr\u00e8s efficace et \u00e9conomique. Transatomic promet ainsi de nous d\u00e9barrasser de 96% de nos d\u00e9chets nucl\u00e9aires tout en diminuant par 1000 la dur\u00e9e de vie des d\u00e9chets restants. Cela pour un co\u00fbt inf\u00e9rieur au charbon ou au gaz. Son principal avantage est d\u2019\u00eatre intrins\u00e8quement s\u00fbr. Si les centrales actuelles n\u00e9cessitent de l\u2019\u00e9nergie pour se refroidir sous peine de provoquer une catastrophe (ce qui est arriv\u00e9 \u00e0 Fukushima), c\u2019est tout le contraire dans un r\u00e9acteur \u00e0 fission liquide\u00a0: la r\u00e9action se stoppe toute seule et sans intervention humaine. Son principal d\u00e9savantage est d\u2019\u00eatre encore relativement jeune\u00a0 : on dira que ce sont des promesses et que le p\u00e8re No\u00ebl n\u2019existe pas. Le co\u00fbt de base reste \u00e9lev\u00e9 \u00e9galement\u00a0: 1,7 milliards de $ pour Transatomic. Toutefois, il faudra bien investir pour nous d\u00e9barrasser des d\u00e9chets nucl\u00e9aires et ce ne serait peut-\u00eatre pas un mal de produire en m\u00eame temps de l\u2019\u00e9lectricit\u00e9.<\/p>\n<p style=\"text-align: left;\" align=\"JUSTIFY\"><strong>___<\/strong><\/p>\n<p style=\"text-align: left;\" align=\"JUSTIFY\"><strong>Aurian Bourguignon<br \/>\n<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Si en Belgique, la sortie du nucl\u00e9aire (qu&rsquo;\u00e9colo j soutient) a \u00e9t\u00e9 d\u00e9cid\u00e9e par la loi du 31 janvier 2003, le secteur du nucl\u00e9aire mondial s\u2019achemine quant \u00e0 lui depuis [&hellip;]<\/p>\n","protected":false},"author":40,"featured_media":5249,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"image","meta":[],"categories":[129],"tags":[40,62],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Le futur du nucl\u00e9aire - 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