{"id":4232,"date":"2021-06-16T17:15:29","date_gmt":"2021-06-16T15:15:29","guid":{"rendered":"https:\/\/sceaux-lagazette.fr\/?p=4232"},"modified":"2021-06-16T17:15:30","modified_gmt":"2021-06-16T15:15:30","slug":"que-se-passe-t-il-a-lepr-de-taishan","status":"publish","type":"post","link":"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/","title":{"rendered":"Que se passe-t-il \u00e0 l\u2019EPR de Taishan ?"},"content":{"rendered":"\n<p>Le 14 juin, avant-hier, <a href=\"https:\/\/edition.cnn.com\/2021\/06\/14\/politics\/china-nuclear-reactor-leak-us-monitoring\/index.html\" target=\"_blank\" rel=\"noreferrer noopener\">un article<\/a> de CNN signale que les Am\u00e9ricains \u00e9valuent une fuite de gaz rares dans la centrale chinoise de Taishan et parle d\u2019un \u00ab\u00a0risque radioactif imminent\u00a0\u00bb. L\u2019information vient de Framatome, qui contribue \u00e0 l\u2019exploitation de l\u2019EPR chinois. Elle ne saurait nous laisser indiff\u00e9rents m\u00eame si, au creux des Hauts-de-Seine nous pouvons nous sentir fort loin. La question de la production suffisante, s\u00fbre et sans C02 de l\u2019\u00e9nergie se pose \u00e0 tous et doit guider nos r\u00e9flexions.<\/p>\n\n\n\n<p>Constatons d\u2019abord que l\u2019information <a href=\"https:\/\/www.la-croix.com\/Monde\/Incident-centrale-nucleaire-Chine-faut-sinquieter-2021-06-15-1201161230?utm_source=newsletter&amp;utm_medium=email&amp;utm_content=20210615&amp;utm_campaign=NEWSLETTER__CRX_JOUR_EDITO&amp;_ope=eyJndWlkIjoiNWNmNDM5MWVmOWRiYzAzNjc3NTAyMDI1NjEyNzlhMjkifQ==\" target=\"_blank\" rel=\"noreferrer noopener\">relay\u00e9e <\/a>par la presse fran\u00e7aise se r\u00e9duit finalement \u00e0 peu de choses. EDF fait dans la journ\u00e9e <a href=\"https:\/\/www.edf.fr\/groupe-edf\/espaces-dedies\/journalistes\/tous-les-communiques-de-presse\/information-relative-au-reacteur-numero-1-de-taishan\" target=\"_blank\" rel=\"noreferrer noopener\">un communiqu\u00e9<\/a> de presse o\u00f9 il donne une description de l\u2019incident\u00a0:<\/p>\n\n\n\n<p><em>EDF a \u00e9t\u00e9 inform\u00e9e de l\u2019augmentation de la concentration de certains gaz rares dans le circuit primaire du r\u00e9acteur n\u00b01 de la centrale nucl\u00e9aire de Taishan d\u00e9tenue et exploit\u00e9e par TNPJVC, joint-venture de CGN (70%) et EDF (30%).<\/em><\/p>\n\n\n\n<p><em>La pr\u00e9sence de certains gaz rares dans le circuit primaire est un ph\u00e9nom\u00e8ne connu, \u00e9tudi\u00e9 et pr\u00e9vu par les proc\u00e9dures d\u2019exploitation des r\u00e9acteurs.<\/em><\/p>\n\n\n\n<p><em>EDF a pris contact avec les \u00e9quipes de TNPJVC et apporte son expertise.<\/em><\/p>\n\n\n\n<p><em>EDF, en tant qu\u2019actionnaire de la soci\u00e9t\u00e9 TNPJVC, a sollicit\u00e9 la tenue d\u2019un conseil d\u2019administration extraordinaire de TPNJVC pour que le management pr\u00e9sente l\u2019ensemble des donn\u00e9es et les d\u00e9cisions n\u00e9cessaires.<\/em><\/p>\n\n\n\n<p>Sur les r\u00e9seaux sociaux, quelques sp\u00e9cialistes du nucl\u00e9aire <a href=\"https:\/\/twitter.com\/buchebuche561\/status\/1404464830032056326\" target=\"_blank\" rel=\"noreferrer noopener\">donnent<\/a> des<a href=\"https:\/\/www.twitch.tv\/tyreannium\" target=\"_blank\" rel=\"noreferrer noopener\"> explications<\/a> techniques sur le ph\u00e9nom\u00e8ne en cours, qui se traduit par la pr\u00e9sence dans le circuit d\u2019eau primaire, de quelques gaz rares, \u00e0 des niveaux sup\u00e9rieurs \u00e0 ceux qui sont connus habituellement (mais pas sur le niveau de la radioactivit\u00e9). La question n\u2019est pas nouvelle, elle a d\u00e9j\u00e0 \u00e9t\u00e9 rencontr\u00e9e dans une centrale fran\u00e7aise (\u00e0 Cattenom en 2001) et a fait l\u2019objet \u00e0 l\u2019\u00e9poque d\u2019un retour d\u2019exp\u00e9rience. Elle est tr\u00e8s pr\u00e9cis\u00e9ment d\u00e9crite dans un document de l\u2019INRS accessible en ligne\u00a0: \u00ab\u00a0<a href=\"https:\/\/www.irsn.fr\/FR\/Larecherche\/publications-documentation\/collection-ouvrages-IRSN\/Documents\/Element%20s%C3%BBret%C3%A9%20REP%20chapitre%2028.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">\u00e9l\u00e9ments de s\u00fbret\u00e9 nucl\u00e9aire\u00a0<\/a>\u00bb<a href=\"#_ftn1\">[1]<\/a>,.\u00a0<\/p>\n\n\n\n<p>Dans une centrale nucl\u00e9aire, le combustible est contenu par ce qu\u2019il est convenu d\u2019appeler des crayons (en raison de leur forme), eux-m\u00eames rang\u00e9s dans des assemblages combustibles. Il y a plus de 50\u00a0000 crayons dans un r\u00e9acteur de 1300 MW. Ces crayons sont con\u00e7us pour \u00eatre \u00e9tanches, mais ne peuvent l\u2019\u00eatre \u00e0 un niveau tel qu\u2019il n\u2019y ait aucune fuite de certains produits de la fission, en l\u2019occurrence du X\u00e9non et du Krypton. Ces deux \u00e9l\u00e9ments font partie de ce qu\u2019on appelle les gaz rares dans le <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Tableau_p%C3%A9riodique_des_%C3%A9l%C3%A9ments\" target=\"_blank\" rel=\"noreferrer noopener\">tableau de Mendele\u00efev<\/a>, leur principale caract\u00e9ristique \u00e9tant qu\u2019ils sont neutres chimiquement (ils ne r\u00e9agissent chimiquement avec aucun autre \u00e9l\u00e9ment). La quantit\u00e9 de ces gaz rares dans le circuit d\u2019eau primaire fait l\u2019objet d\u2019une surveillance constante, avec deux seuils.\u00a0\u00a0 D\u2019abord un seuil d\u2019alerte (quand il est d\u00e9pass\u00e9, l\u2019exploitant est inform\u00e9) et au-del\u00e0 de ce seuil, une surveillance accrue doit \u00eatre mis en place. Ensuite un seuil au-del\u00e0 duquel le r\u00e9acteur doit \u00eatre arr\u00eat\u00e9 pour intervention.<\/p>\n\n\n\n<p>En France, l\u2019ASN a d\u00e9fini ces seuils (voir <a href=\"https:\/\/www.asn.fr\/Informer\/Actualites\/Centrales-nucleaires-EDF-Combustible\" target=\"_blank\" rel=\"noreferrer noopener\">cette note<\/a>). De ce qu\u2019on sait actuellement, il appara\u00eet que le seuil d\u2019alerte a \u00e9t\u00e9 d\u00e9pass\u00e9 en octobre. Le r\u00e9acteur a continu\u00e9 \u00e0 fonctionner (ce qui n\u2019est pas une anomalie) et l\u2019instance chinoise de surveillance (l\u2019\u00e9quivalent de l\u2019ASN) a \u00e9t\u00e9 inform\u00e9e. Cette situation n\u2019est pas consid\u00e9r\u00e9e comme un incident. Framatome est normalement sollicit\u00e9e pour \u00e9tudier la situation (et ses cons\u00e9quences).<\/p>\n\n\n\n<p>A priori donc, une temp\u00eate dans un verre d\u2019eau, \u00e0 la limite pr\u00e8s qu\u2019on n\u2019a pas le d\u00e9tail des niveaux observ\u00e9s (ce que demande d\u2019EDF dans son communiqu\u00e9). Et comme le fait remarquer un des sp\u00e9cialistes qui donne ces explications sur Twitter&nbsp;:<\/p>\n\n\n\n<p>\u00ab&nbsp;<em>Reste la question de l&rsquo;implication des USA dans l&rsquo;histoire &#8230;Et l\u00e0 pas de r\u00e9ponse claire &#8230; Framatome, CGN et EDF n&rsquo;ont pas besoin des Am\u00e9ricains pour g\u00e9rer leurs r\u00e9acteurs merci. Reste \u00e0 savoir si cela a un lien avec la branche US de FRAMATOME qui a aussi des comp\u00e9tences en combustible ou bien simplement une fuite mont\u00e9e en \u00e9pingle \u2026&nbsp;\u00bb<\/em><\/p>\n\n\n\n<p>Il cite cependant un sp\u00e9cialiste am\u00e9ricain de la Chine <a href=\"https:\/\/twitter.com\/pretentiouswhat\/status\/1404330426823442434\" target=\"_blank\" rel=\"noreferrer noopener\">qui pense<\/a> que l\u2019information donn\u00e9e par Framatome (sollicit\u00e9 par les Chinois en raison de sa comp\u00e9tence) vise seulement \u00e0 montrer sa bonne volont\u00e9 aux autorit\u00e9s am\u00e9ricaines (dans un contexte de relations commerciales difficiles entre U.S.A. et Chine) et que l\u2019\u00e9quivalent am\u00e9ricain de l\u2019ASN n\u2019a pas jug\u00e9 qu\u2019il y avait un probl\u00e8me technique particulier.<\/p>\n\n\n\n<p>Cet \u00e9pisode illustre deux caract\u00e9ristiques cl\u00e9s du fonctionnement de l\u2019industrie nucl\u00e9aire&nbsp;en France :<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Le niveau de transparence est extr\u00eamement \u00e9lev\u00e9, avec une surveillance tr\u00e8s importante des exploitants par les autorit\u00e9s de surveillance. Cette situation est unique (\u00e0 ce point du moins) dans l\u2019industrie.<\/li><li>Le moindre \u00e9v\u00e9nement fait l\u2019objet d\u2019une r\u00e9action dans la presse, avec plus ou moins de pr\u00e9cision de la part de celle-ci.<\/li><\/ul>\n\n\n\n<p>On peut supposer que l\u2019autorit\u00e9 de surveillance chinoise veut \u00e9galement tout savoir de l\u2019exploitant, mais que la presse chinoise a moins les moyens de suivre que la n\u00f4tre\u2026 Il est donc urgent d\u2019en savoir plus avant de se livrer \u00e0 des exercices oratoires.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><a href=\"#_ftnref1\">[1]<\/a> Voir au chapitre 28, page 824<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le 14 juin, avant-hier, un article de CNN signale que les Am\u00e9ricains \u00e9valuent une fuite de gaz rares dans la centrale chinoise de Taishan et parle d\u2019un \u00ab\u00a0risque radioactif imminent\u00a0\u00bb. L\u2019information vient de Framatome, qui contribue \u00e0 l\u2019exploitation de l\u2019EPR chinois. Elle ne saurait nous laisser indiff\u00e9rents m\u00eame si, au&#8230;<\/p>\n","protected":false},"author":11,"featured_media":4234,"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-4232","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>Que se passe-t-il \u00e0 l\u2019EPR de Taishan ? - 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\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Que se passe-t-il \u00e0 l\u2019EPR de Taishan ? - La Gazette\" \/>\n<meta property=\"og:description\" content=\"Le 14 juin, avant-hier, un article de CNN signale que les Am\u00e9ricains \u00e9valuent une fuite de gaz rares dans la centrale chinoise de Taishan et parle d\u2019un \u00ab\u00a0risque radioactif imminent\u00a0\u00bb. L\u2019information vient de Framatome, qui contribue \u00e0 l\u2019exploitation de l\u2019EPR chinois. Elle ne saurait nous laisser indiff\u00e9rents m\u00eame si, au&#8230;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/\" \/>\n<meta property=\"og:site_name\" content=\"La Gazette\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-16T15:15:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-06-16T15:15:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2021\/06\/epr-taishan-chine-nucleaire-reacteur-edf-cgn.png\" \/>\n\t<meta property=\"og:image:width\" content=\"997\" \/>\n\t<meta property=\"og:image:height\" content=\"499\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"G\u00e9rard Bardier\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"G\u00e9rard Bardier\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/\"},\"author\":{\"name\":\"G\u00e9rard Bardier\",\"@id\":\"https:\/\/sceaux-lagazette.fr\/#\/schema\/person\/5650e206a121f68c6f5e76379bccfbc4\"},\"headline\":\"Que se passe-t-il \u00e0 l\u2019EPR de Taishan ?\",\"datePublished\":\"2021-06-16T15:15:29+00:00\",\"dateModified\":\"2021-06-16T15:15:30+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/\"},\"wordCount\":962,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/sceaux-lagazette.fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2021\/06\/epr-taishan-chine-nucleaire-reacteur-edf-cgn.png\",\"articleSection\":[\"Analyses\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/\",\"url\":\"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/\",\"name\":\"Que se passe-t-il \u00e0 l\u2019EPR de Taishan ? 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L\u2019information vient de Framatome, qui contribue \u00e0 l\u2019exploitation de l\u2019EPR chinois. Elle ne saurait nous laisser indiff\u00e9rents m\u00eame si, au&#8230;","og_url":"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/","og_site_name":"La Gazette","article_published_time":"2021-06-16T15:15:29+00:00","article_modified_time":"2021-06-16T15:15:30+00:00","og_image":[{"width":997,"height":499,"url":"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2021\/06\/epr-taishan-chine-nucleaire-reacteur-edf-cgn.png","type":"image\/png"}],"author":"G\u00e9rard Bardier","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"G\u00e9rard Bardier","Dur\u00e9e de lecture estim\u00e9e":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/#article","isPartOf":{"@id":"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/"},"author":{"name":"G\u00e9rard Bardier","@id":"https:\/\/sceaux-lagazette.fr\/#\/schema\/person\/5650e206a121f68c6f5e76379bccfbc4"},"headline":"Que se passe-t-il \u00e0 l\u2019EPR de Taishan ?","datePublished":"2021-06-16T15:15:29+00:00","dateModified":"2021-06-16T15:15:30+00:00","mainEntityOfPage":{"@id":"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/"},"wordCount":962,"commentCount":0,"publisher":{"@id":"https:\/\/sceaux-lagazette.fr\/#organization"},"image":{"@id":"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/#primaryimage"},"thumbnailUrl":"https:\/\/sceaux-lagazette.fr\/wp-content\/uploads\/2021\/06\/epr-taishan-chine-nucleaire-reacteur-edf-cgn.png","articleSection":["Analyses"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/","url":"https:\/\/sceaux-lagazette.fr\/index.php\/2021\/06\/16\/que-se-passe-t-il-a-lepr-de-taishan\/","name":"Que se passe-t-il \u00e0 l\u2019EPR de Taishan ? 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