{"id":28305,"date":"2026-04-26T06:00:00","date_gmt":"2026-04-26T04:00:00","guid":{"rendered":"https:\/\/www.greenpeace.org\/luxembourg\/?p=28305"},"modified":"2026-04-23T15:36:44","modified_gmt":"2026-04-23T13:36:44","slug":"40-ans-apres-tchernobyl-la-mutation-dune-catastrophe-sans-fin","status":"publish","type":"post","link":"https:\/\/www.greenpeace.org\/luxembourg\/fr\/actualites\/28305\/40-ans-apres-tchernobyl-la-mutation-dune-catastrophe-sans-fin\/","title":{"rendered":"40 ans apr\u00e8s Tchernobyl : la mutation d\u2019une catastrophe sans fin"},"content":{"rendered":"\n<p>Il y a 40 ans aujourd\u2019hui, une explosion survenue dans le r\u00e9acteur n\u00b0 4 de la centrale nucl\u00e9aire de Tchernobyl a provoqu\u00e9 une contamination radioactive \u00e0 travers l\u2019Europe, for\u00e7ant des communaut\u00e9s enti\u00e8res \u00e0 abandonner leurs foyers et laissant derri\u00e8re elle un h\u00e9ritage toxique qui perdure encore aujourd\u2019hui. Car malheureusement, les cons\u00e9quences ne se sont pas arr\u00eat\u00e9es lorsque l\u2019affaire a disparu des gros titres : des vies vol\u00e9es, des moyens de subsistance ont \u00e9t\u00e9 perdus, des terres inhabitables et un nettoyage impossible et infini qui continue d\u2019entra\u00eener d\u2019\u00e9normes co\u00fbts humains et financiers. Il ne s\u2019agit donc pas simplement de comm\u00e9morer un \u00e9v\u00e9nement pass\u00e9 car, 40 ans plus tard, c\u2019est une urgence nucl\u00e9aire qui perdure.<\/p>\n\n<p>Aujourd\u2019hui, les r\u00e9percussions continuent de se faire sentir dans un monde de plus en plus instable. Depuis l\u2019invasion \u00e0 grande \u00e9chelle de l\u2019Ukraine par la Russie, les infrastructures nucl\u00e9aires ont \u00e9t\u00e9 expos\u00e9es aux r\u00e9alit\u00e9s de la guerre moderne. Des centrales nucl\u00e9aires ont \u00e9t\u00e9 attaqu\u00e9es et occup\u00e9es, et des syst\u00e8mes critiques ont \u00e9t\u00e9 soumis \u00e0 une pression immense. Comme l\u2019a d\u00e9clar\u00e9 Polina Kolodiazhna, responsable de campagne chez Greenpeace Ukraine : <em>\u00ab Quarante ans apr\u00e8s le d\u00e9but de la catastrophe de Tchernobyl, nous en subissons toujours les cons\u00e9quences. Les risques graves li\u00e9s \u00e0 l\u2019\u00e9nergie nucl\u00e9aire mis en \u00e9vidence par Tchernobyl sont d\u00e9lib\u00e9r\u00e9ment utilis\u00e9s par la Russie comme une arme de guerre. \u00bb<\/em><\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/e8dd6bc2-gp0su8mya_medium-res-with-credit-line-1200px-1-1024x576.jpg\" alt=\"\" class=\"wp-image-28301\" srcset=\"https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/e8dd6bc2-gp0su8mya_medium-res-with-credit-line-1200px-1-1024x576.jpg 1024w, https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/e8dd6bc2-gp0su8mya_medium-res-with-credit-line-1200px-1-300x169.jpg 300w, https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/e8dd6bc2-gp0su8mya_medium-res-with-credit-line-1200px-1-768x432.jpg 768w, https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/e8dd6bc2-gp0su8mya_medium-res-with-credit-line-1200px-1-510x287.jpg 510w, https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/e8dd6bc2-gp0su8mya_medium-res-with-credit-line-1200px-1.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u00c0 l\u2019approche du 40e anniversaire de la catastrophe du r\u00e9acteur de Tchernobyl (26 avril 1986), des activistes de Greenpeace se mobilisent devant la ruine nucl\u00e9aire pour appeler \u00e0 un soutien renforc\u00e9 \u00e0 l\u2019Ukraine dans la s\u00e9curisation du site. La structure de confinement \u00ab New Safe Confinement \u00bb, qui recouvre le sarcophage et le r\u00e9acteur endommag\u00e9, a \u00e9t\u00e9 gravement touch\u00e9e par une attaque de drone russe et ne peut plus assurer pleinement sa fonction.<\/figcaption><\/figure>\n\n<p>L&#8217;\u00e9nergie nucl\u00e9aire reste la principale source d&#8217;\u00e9lectricit\u00e9 en Ukraine. Mais le contexte a chang\u00e9. Dans un monde marqu\u00e9 par la guerre, les tensions g\u00e9opolitiques et l&#8217;intensification des ph\u00e9nom\u00e8nes m\u00e9t\u00e9orologiques extr\u00eames, les grands syst\u00e8mes \u00e9nerg\u00e9tiques centralis\u00e9s sont expos\u00e9s. Lorsque les choses tournent mal, les cons\u00e9quences sont syst\u00e9miques et durables.<\/p>\n\n<p>Il existe cependant un autre aspect de la situation, qui montre ce qui est d\u00e9j\u00e0 possible et laisse entrevoir un avenir meilleur.<\/p>\n\n<p>Partout en Ukraine, les \u00e9nergies renouvelables d\u00e9centralis\u00e9es font d\u00e9j\u00e0 leurs preuves dans des conditions difficiles. L&#8217;\u00e9nergie solaire et le stockage par batterie ont permis aux h\u00f4pitaux, aux \u00e9coles et aux communaut\u00e9s de continuer \u00e0 fonctionner pendant les coupures de courant caus\u00e9es par les attaques russes contre les infrastructures \u00e9lectriques. Les syst\u00e8mes renouvelables sont plus difficiles \u00e0 mettre hors service, plus rapides \u00e0 r\u00e9parer et continuent de produire de l&#8217;\u00e9lectricit\u00e9 m\u00eame lorsque certaines parties du r\u00e9seau sont endommag\u00e9es.<\/p>\n\n<p>\u00c0 Horenka, pr\u00e8s de Kiev, une clinique ambulatoire endommag\u00e9e a \u00e9t\u00e9 reconstruite, avec <a href=\"https:\/\/www.greenpeace.org\/ukraine\/en\/news\/3494\/the-green-outpatient-clinic-in-horenka-continues-to-save-money\/\">le soutien de Greenpeace Ukraine<\/a>, et \u00e9quip\u00e9e d&#8217;un syst\u00e8me solaire hybride et d&#8217;une pompe \u00e0 chaleur au lieu du gaz. Sa directrice, Olena Yuzvak, a d\u00e9clar\u00e9 que cela permettait de soigner les patients malgr\u00e9 les attaques russes. <em>\u00ab Mais nous sommes devenus bien plus qu\u2019une \u201csimple\u201d clinique ambulatoire verte \u00bb<\/em>, a-t-elle d\u00e9clar\u00e9. <em>\u00ab En p\u00e9riode de p\u00e9nurie d\u2019\u00e9nergie, les gens viennent chez nous pour obtenir une aide m\u00e9dicale, mais aussi simplement pour recharger leur t\u00e9l\u00e9phone ou boire une tasse de th\u00e9 chaud. La clinique de Horenka est une bou\u00e9e de sauvetage. \u00bb<\/em><\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-un-bel-exemple-de-resilience\"><strong>Un bel exemple de r\u00e9silience<\/strong><\/h3>\n\n<p>Les syst\u00e8mes d&#8217;\u00e9nergie renouvelable d\u00e9centralis\u00e9s permettent de r\u00e9duire la vuln\u00e9rabilit\u00e9, car ils ne concentrent pas les risques en un seul point de d\u00e9faillance. Ils peuvent \u00eatre d\u00e9ploy\u00e9s rapidement, adapt\u00e9s de mani\u00e8re flexible et remis en \u00e9tat sans d\u00e9lai. C&#8217;est essentiel dans un environnement instable.<\/p>\n\n<p>En revanche, les risques li\u00e9s \u00e0 l&#8217;\u00e9nergie nucl\u00e9aire persistent, y compris \u00e0 Tchernobyl. Une nouvelle <a href=\"https:\/\/www.greenpeace.org\/static\/planet4-ukraine-stateless\/2026\/04\/a1f1a368-eng-report-new.pdf\">analyse command\u00e9e par Greenpeace Ukraine<\/a> r\u00e9v\u00e8le que les fonctions principales du New Safe Confinement (NSC), qui abrite le sarcophage et les ruines du r\u00e9acteur n\u00b0 4 de Tchernobyl, ont \u00e9t\u00e9 gravement compromises \u00e0 la suite de la frappe d\u00e9lib\u00e9r\u00e9e men\u00e9e l&#8217;ann\u00e9e derni\u00e8re par un drone russe. L&#8217;\u00e9valuation conclut que sa capacit\u00e9 \u00e0 remplir son r\u00f4le de confinement a \u00e9t\u00e9 compromise, ce qui soul\u00e8ve des inqui\u00e9tudes quant \u00e0 un \u00e9ventuel rejet de mati\u00e8res radioactives.<\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/af771a7e-gp0su8pb5_medium-res-with-credit-line-1200px-1024x576.jpg\" alt=\"\" class=\"wp-image-28303\" srcset=\"https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/af771a7e-gp0su8pb5_medium-res-with-credit-line-1200px-1024x576.jpg 1024w, https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/af771a7e-gp0su8pb5_medium-res-with-credit-line-1200px-300x169.jpg 300w, https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/af771a7e-gp0su8pb5_medium-res-with-credit-line-1200px-768x432.jpg 768w, https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/af771a7e-gp0su8pb5_medium-res-with-credit-line-1200px-510x287.jpg 510w, https:\/\/www.greenpeace.org\/static\/planet4-luxembourg-stateless\/2026\/04\/af771a7e-gp0su8pb5_medium-res-with-credit-line-1200px.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Les charg\u00e9s de campagne de Greenpeace, Shaun Burnie et Jan Van de Putte, sur place.<br>Une mission sp\u00e9ciale de Greenpeace Ukraine s\u2019est rendue sur le site de la centrale nucl\u00e9aire de Tchernobyl afin d\u2019\u00e9valuer l\u2019\u00e9tat actuel de la structure de confinement \u00ab New Safe Confinement \u00bb (NSC).<br>Le 14 f\u00e9vrier 2025, la NSC a \u00e9t\u00e9 frapp\u00e9e par un drone russe qui a explos\u00e9 en perforant le toit, provoquant des incendies et causant d\u2019importants d\u00e9g\u00e2ts \u00e0 la structure. Les feux ont \u00e9t\u00e9 d\u00e9clar\u00e9s \u00e9teints le 7 mars, soit trois semaines apr\u00e8s l\u2019attaque, mais les services d\u2019intervention restent en \u00e9tat d\u2019alerte.<\/figcaption><\/figure>\n\n<p>\u00c0 l&#8217;int\u00e9rieur du r\u00e9acteur endommag\u00e9 et de son abri d&#8217;origine se trouve un m\u00e9lange complexe de poussi\u00e8re radioactive, de r\u00e9sidus de combustible et de d\u00e9bris. Le NSC a \u00e9t\u00e9 con\u00e7u pour permettre le d\u00e9mant\u00e8lement en toute s\u00e9curit\u00e9 de ces mat\u00e9riaux tout en emp\u00eachant la contamination de s&#8217;\u00e9chapper. Cette fonction \u00e9tant compromise, les risques deviennent plus difficiles \u00e0 g\u00e9rer, en particulier en p\u00e9riode de guerre.<\/p>\n\n<p>Shaun Burnie, sp\u00e9cialiste nucl\u00e9aire de Greenpeace, a averti que cette situation augmente le risque de fuite de mati\u00e8res radioactives en cas de d\u00e9faillance structurelle, soulignant ainsi comment les conflits amplifient les risques \u00e0 long terme d\u2019une catastrophe nucl\u00e9aire. C\u2019est l\u2019un des principaux enseignements de Tchernobyl et cela devrait servir d\u2019avertissement. Les cons\u00e9quences d&#8217;une catastrophe nucl\u00e9aire ne se limitent pas \u00e0 un instant pr\u00e9cis. Elles perdurent, \u00e9voluent et peuvent \u00eatre aggrav\u00e9es par de nouvelles pressions, telles qu&#8217;une guerre ou des conditions m\u00e9t\u00e9orologiques extr\u00eames.<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-une-question-de-responsabilite\"><strong>Une question de responsabilit\u00e9<\/strong><\/h3>\n\n<p>Les forces russes continuent de menacer les installations nucl\u00e9aires en Ukraine et d&#8217;attaquer syst\u00e9matiquement le r\u00e9seau \u00e9lectrique ukrainien. Cela pourrait conduire, dans le pire des cas, \u00e0 de multiples d\u00e9faillances d&#8217;urgence dans les r\u00e9acteurs nucl\u00e9aires ukrainiens et au rejet de niveaux de radioactivit\u00e9 d\u00e9vastateurs, d\u00e9passant m\u00eame ceux observ\u00e9s lors de la catastrophe de Tchernobyl il y a 40 ans. Dans le m\u00eame temps, la soci\u00e9t\u00e9 d&#8217;\u00c9tat russe Rosatom continue de jouer un r\u00f4le cl\u00e9 sur les march\u00e9s \u00e9nerg\u00e9tiques mondiaux en exportant des technologies et du combustible nucl\u00e9aire. R\u00e9duire la d\u00e9pendance vis-\u00e0-vis de Rosatom n&#8217;est pas seulement une question \u00e9nerg\u00e9tique, mais aussi une question de s\u00e9curit\u00e9 internationale.<\/p>\n\n<p>Continuer \u00e0 s&#8217;appuyer sur des syst\u00e8mes nucl\u00e9aires li\u00e9s \u00e0 des risques g\u00e9opolitiques, que ce soit par le biais de l&#8217;approvisionnement en combustible, des technologies ou des infrastructures, expose les pays \u00e0 des pressions politiques, \u00e9conomiques et s\u00e9curitaires qui vont bien au-del\u00e0 de la politique \u00e9nerg\u00e9tique.<\/p>\n\n<p>La le\u00e7on de Tchernobyl ne concerne pas seulement ce qui peut mal tourner, mais aussi ce que cela co\u00fbte lorsque cela se produit, au-del\u00e0 des fronti\u00e8res, \u00e0 travers les g\u00e9n\u00e9rations et dans des conditions plus instables que jamais.<\/p>\n\n<p>Le choix n\u2019est pas abstrait. Il se joue aujourd\u2019hui.<\/p>\n\n<p>Les gouvernements peuvent continuer \u00e0 investir dans des syst\u00e8mes centralis\u00e9s qui concentrent les risques et renforcent la d\u00e9pendance g\u00e9opolitique. Ou bien ils peuvent acc\u00e9l\u00e9rer la transition vers des \u00e9nergies renouvelables d\u00e9centralis\u00e9es, plus s\u00fbres, plus r\u00e9silientes et plus difficiles \u00e0 militariser.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Il y a 40 ans aujourd\u2019hui, une explosion survenue dans le r\u00e9acteur n\u00b0 4 de la centrale nucl\u00e9aire de Tchernobyl a provoqu\u00e9 une contamination radioactive \u00e0 travers l\u2019Europe, for\u00e7ant des&hellip;<\/p>\n","protected":false},"author":25,"featured_media":28301,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ep_exclude_from_search":false,"p4_og_title":"","p4_og_description":"","p4_og_image":"","p4_og_image_id":"","p4_seo_canonical_url":"","p4_campaign_name":"","p4_local_project":"","p4_basket_name":"","p4_department":"","footnotes":""},"categories":[42],"tags":[30],"p4-page-type":[85],"class_list":["post-28305","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-energie","tag-nucleaire","p4-page-type-actualites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.9 (Yoast SEO v23.9) - 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