{"id":15951,"date":"2018-01-04T13:25:00","date_gmt":"2018-01-04T13:25:00","guid":{"rendered":"https:\/\/ecolo2.yazilimgemisi.com\/les-reacteurs-rapides-rnr-na-ont-de-gros-avantages-en-matiere-de-surete\/"},"modified":"2018-01-04T13:25:00","modified_gmt":"2018-01-04T13:25:00","slug":"les-reacteurs-rapides-rnr-na-ont-de-gros-avantages-en-matiere-de-surete","status":"publish","type":"post","link":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/les-reacteurs-rapides-rnr-na-ont-de-gros-avantages-en-matiere-de-surete\/","title":{"rendered":"Les r\u00e9acteurs rapides (RNR-Na) ont de gros avantages en mati\u00e8re de s\u00fbret\u00e9."},"content":{"rendered":"<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n<b><span style=\"color: black; font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;; font-size: 10pt;\">&nbsp;<\/span><\/b><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n<span style=\"color: black;\">&nbsp;<\/span><\/div>\n<p><span style=\"color: black; font-family: &quot;Arial&quot;,&quot;sans-serif&quot;; font-size: 10pt;\">Une question a \u00e9t\u00e9&nbsp;pos\u00e9e fin d\u00e9cembre 2017 sur le groupe facebook de<br \/>\nl\u2019AEPN&nbsp;: <\/span><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n<span style=\"color: black; font-family: &quot;Arial&quot;,&quot;sans-serif&quot;; font-size: 10pt;\">&nbsp;<\/span><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i><span style=\"color: black;\">\u00ab&nbsp;N<\/span>iveau<br \/>\ns\u00fbret\u00e9, ces r\u00e9acteurs RNR ne sont pas top.<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>&nbsp;<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>En r\u00e9alit\u00e9, niveau s\u00fbret\u00e9, les<br \/>\nRNR pr\u00e9sentent deux ou trois probl\u00e8mes:<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>-Effet de vidange positif<br \/>\n(reste localement positif m\u00eame dans le nouveau c\u0153ur du CEA)<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>-Quid de l&#8217;aspersion de<br \/>\nl&#8217;enceinte, on ne peut pas utiliser de l&#8217;eau<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>-Quid des vapeurs de sodium<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>-Quid de la criticit\u00e9 du<br \/>\ncorium, ainsi que de sa puissance r\u00e9siduelle<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>-Quid des filtres \u00e0 sable<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>&nbsp;<\/i><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<i>Enfin, au niveau du<br \/>\nd\u00e9ploiement, les RNR ont une plus grande densit\u00e9 de puissance que les REP, il<br \/>\nfaut plus de temps pour que le combustible refroidisse. Combien de c\u0153ur par<br \/>\nr\u00e9acteur? Quelle quantit\u00e9 de Pu par GW ?&nbsp;\u00bb<\/i><\/div>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<em><br \/><\/em><\/div>\n<div style=\"clear: both; text-align: center;\">\n<a href=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEhHBXWVPdTUKqx7E1Eszc3p0TdaO4zB7i0kSC4lJWJWPi0Q9Ad7B4D9UZSBM141ut0bWzQwKnjyEOlNGpFCvzhuwsWc-S4BFMwMAXC1HWLejln67q25Sz_UpxAqXR64nqztXoNyOtufr7vj\/s1600\/XVM7d08bd04-e950-11e6-9790-e668ca622fe5.jpg\" style=\"margin-left: 1em; margin-right: 1em;\"><img fetchpriority=\"high\" decoding=\"async\" border=\"0\" data-original-height=\"382\" data-original-width=\"680\" height=\"179\" src=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEhHBXWVPdTUKqx7E1Eszc3p0TdaO4zB7i0kSC4lJWJWPi0Q9Ad7B4D9UZSBM141ut0bWzQwKnjyEOlNGpFCvzhuwsWc-S4BFMwMAXC1HWLejln67q25Sz_UpxAqXR64nqztXoNyOtufr7vj\/s320\/XVM7d08bd04-e950-11e6-9790-e668ca622fe5.jpg\" width=\"320\" \/><\/a><\/div>\n<div style=\"margin: 0cm 0cm 0pt 35.4pt;\">\n<em><br \/><\/em><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n<u>R\u00e9ponse de l\u2019AEPN&nbsp;: <\/u><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\nLes <span style=\"color: black;\">r\u00e9acteurs rapides (<\/span>RNR<span style=\"color: black;\">-Na)<\/span> ont en r\u00e9alit\u00e9 de gros avantages en mati\u00e8re de<br \/>\ns\u00fbret\u00e9<span style=\"color: black;\">.<\/span><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n<span style=\"color: black; font-family: &quot;Arial&quot;,&quot;sans-serif&quot;; font-size: 10pt;\">&nbsp;<\/span><\/div>\n<p><\/p>\n<ul style=\"direction: ltr; list-style-type: disc;\">\n<li style=\"color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; font-size: 12pt; font-style: normal; font-weight: normal;\">\n<div style=\"color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; font-size: 12pt; font-style: normal; font-weight: normal; margin-bottom: 0pt; margin-top: 0cm; mso-list: l0 level1 lfo1;\">\nQuasiment pas de pression dans le c\u0153ur et le<br \/>\ncircuit primaire (c\u2019est un \u00e9norme avantage). La question des inclusions de<br \/>\ncarbone dans l\u2019acier <span style=\"color: black;\">(<\/span>etc<span style=\"color: black;\">\u2026)<\/span> ne se pose plus et une cuve de 2 ou 3 cm<br \/>\nd\u2019\u00e9paisseur est suffisante.<\/div>\n<\/li>\n<\/ul>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<ul style=\"direction: ltr; list-style-type: disc;\">\n<li style=\"color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; font-size: 12pt; font-style: normal; font-weight: normal;\">\n<div style=\"color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; font-size: 12pt; font-style: normal; font-weight: normal; margin-bottom: 0pt; margin-top: 0cm; mso-list: l0 level1 lfo1;\">\nTr\u00e8s grande inertie thermique : donc en cas de<br \/>\np\u00e9pin on a plusieurs heures pour r\u00e9fl\u00e9chir avant que le r\u00e9acteur <span style=\"color: black;\">ne <\/span>monte en temp\u00e9rature (au lieu de quelques minutes<br \/>\ndans un PWR). C\u2019est aussi un \u00e9norme avantage.<\/div>\n<\/li>\n<\/ul>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<ul style=\"direction: ltr; list-style-type: disc;\">\n<li style=\"color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; font-size: 12pt; font-style: normal; font-weight: normal;\">\n<div style=\"color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; font-size: 12pt; font-style: normal; font-weight: normal; margin-bottom: 0pt; margin-top: 0cm; mso-list: l0 level1 lfo1;\">\nR\u00e9action sodium-air : produit une petite fum\u00e9e<br \/>\nblanche non corrosive et froide (tr\u00e8s peu de chaleur d\u00e9gag\u00e9e) qui retombe<br \/>\nlentement comme de la neige. <span style=\"color: black;\">(<\/span><b><span style=\"color: #14171a; font-family: &quot;Helvetica&quot;,&quot;sans-serif&quot;; font-size: 10.5pt;\">En<br \/>\nnappe un feu de sodium rejette 15 fois moins de chaleur que le fuel. Quasi<br \/>\nabsence de flammes, alors que celles-ci montent \u00e0 plusieurs m\u00e8tres pour le fuel<br \/>\net limitent l\u2019approche des pompiers<\/span><\/b><span style=\"color: #14171a; font-family: &quot;Helvetica&quot;,&quot;sans-serif&quot;; font-size: 10.5pt;\">.)<\/span><\/div>\n<\/li>\n<\/ul>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n<span style=\"color: black; font-family: &quot;Arial&quot;,&quot;sans-serif&quot;; font-size: 10pt;\">&nbsp;<\/span><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\nCf<span style=\"color: black;\">.<\/span> <span style=\"color: black;\">l\u2019<\/span>exp\u00e9rience des <span style=\"color: black;\">R<\/span>usses et<br \/>\nl\u2019accident de rupture du circuit primaire de Monju en 95 : pas de d\u00e9g\u00e2ts, pas<br \/>\nde morts ni bless\u00e9s et le r\u00e9acteur peut red\u00e9marrer quelques jours apr\u00e8s (il<br \/>\nfaut passer l\u2019aspirateur).<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\nSur <span style=\"color: black;\">une p\u00e9riode sup\u00e9rieure \u00e0<\/span><br \/>\n100 ans de fonctionnement industriel de RNR il n\u2019y a pas eu d\u2019accident grave<br \/>\npour la s\u00fbret\u00e9, que des p<span style=\"color: black;\">robl\u00e8mes<\/span> de mise au<br \/>\npoint de prototypes (affaire du barillet sur SPX par exemple).<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\nLe sodium est largement diabolis\u00e9 mais on l\u2019utilise dans de<br \/>\nnombreuses autres industries sans que cela suscite les m\u00eames inqui\u00e9tudes et<br \/>\n\u00e9motions, c\u2019est pourtant le m\u00eame sodium, qui semble n\u2019\u00eatre dangereux que dans<br \/>\nle nucleaire&#8230;<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n<span style=\"color: black;\">E<\/span>n raison de leur co\u00fbt<br \/>\n&nbsp;les RNR ne se d\u00e9velopperont <span style=\"color: black;\">probablement <\/span>industriellement<br \/>\n<span style=\"color: black;\">\u00e0 grande \u00e9chelle <\/span>que lorsque l\u2019U 235<br \/>\ncommencera \u00e0 <span style=\"color: black;\">se rar\u00e9fier. <b>A<\/b><\/span><b> moins<br \/>\nque l\u2019humanit\u00e9 ne prenne conscience de l\u2019enjeu qu\u2019il y a \u00e0 pr\u00e9venir le<br \/>\nchangement climatique. (Tendre vers 20 TW install\u00e9 en 2100 est un sc\u00e9nario<br \/>\npropos\u00e9 au GIEC et qui se distingue par sa capacit\u00e9 \u00e0 nous maintenir sous les 2<br \/>\n\u00b0C<\/b>.).<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\nIl reste la question des petits RNR de 100 \u00e0 300 MW qui <span style=\"color: black;\">semblent <\/span>int\u00e9ressants dans des r\u00e9gions isol\u00e9es loin<br \/>\ndes r\u00e9seaux (\u00eeles&#8230;).<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 0pt;\">\n&nbsp;<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 12pt;\">\nFiltres \u00e0 sable : leur<br \/>\ninstallation est ind\u00e9pendante du type de r\u00e9acteur. On peut en mettre aussi sur<br \/>\nles RNR.<\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 12pt;\">\n<b><span style=\"color: black;\">Pour<br \/>\nen savoir plus&nbsp;:<\/span><\/b><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 12pt;\">\n<span style=\"color: black; font-family: &quot;Arial&quot;,&quot;sans-serif&quot;; font-size: 10pt;\"><a href=\"http:\/\/www.cea.fr\/Documents\/monographies\/reacteurs-nucleaires-sodium-historique-bilan-fonctionnement.pdf\"><span style=\"color: blue;\">http:\/\/www.cea.fr\/Documents\/monographies\/reacteurs-nucleaires-sodium-historique-bilan-fonctionnement.pdf<\/span><\/a><\/span><\/div>\n<p><\/p>\n<div style=\"margin: 0cm 0cm 12pt;\">\n<span style=\"color: black; font-family: &quot;Arial&quot;,&quot;sans-serif&quot;; font-size: 10pt;\">&nbsp;<\/span><\/div>","protected":false},"excerpt":{"rendered":"<p>&nbsp; &nbsp; Une question a \u00e9t\u00e9&nbsp;pos\u00e9e fin d\u00e9cembre 2017 sur le groupe facebook de l\u2019AEPN&nbsp;: &nbsp; \u00ab&nbsp;Niveau s\u00fbret\u00e9, ces r\u00e9acteurs RNR ne sont pas top. &nbsp; En r\u00e9alit\u00e9, niveau s\u00fbret\u00e9, les RNR pr\u00e9sentent deux ou trois probl\u00e8mes: -Effet de vidange positif (reste localement positif m\u00eame dans le nouveau c\u0153ur du CEA) -Quid de l&#8217;aspersion de&hellip;<\/p>","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[118],"tags":[],"class_list":["post-15951","post","type-post","status-publish","format-standard","hentry","category-uncategorized-fr","category-118","description-off"],"_links":{"self":[{"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/posts\/15951","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/comments?post=15951"}],"version-history":[{"count":0,"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/posts\/15951\/revisions"}],"wp:attachment":[{"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/media?parent=15951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/categories?post=15951"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolo2.yazilimgemisi.com\/tr\/wp-json\/wp\/v2\/tags?post=15951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}