{"id":6592,"date":"2026-10-02T09:54:46","date_gmt":"2026-10-02T09:54:46","guid":{"rendered":"https:\/\/centrexpert.com\/?p=6592"},"modified":"2026-09-30T06:46:26","modified_gmt":"2026-09-30T06:46:26","slug":"atex-de-la-zone-a-la-machine-conforme","status":"publish","type":"post","link":"https:\/\/centrexpert.com\/en\/atex-de-la-zone-a-la-machine-conforme\/","title":{"rendered":"ATEX : comprendre la zone avant de transformer la machine"},"content":{"rendered":"
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Un chariot \u00e9l\u00e9vateur diesel doit entrer en zone 1 sur une plateforme offshore. Aucune version ATEX n’existe au catalogue du constructeur, et remplacer l’engin n’est pas une option. Que faire ? D’abord comprendre ce que la zone exige, ensuite mesurer jusqu’o\u00f9 une machine existante peut \u00eatre transform\u00e9e pour y r\u00e9pondre. Cet article suit ce chemin, de la d\u00e9finition de l’atmosph\u00e8re explosive jusqu’au choix du partenaire qui engage sa responsabilit\u00e9 sur le r\u00e9sultat.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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Ce que recouvre vraiment le mot ATEX<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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ATEX contracte \u00ab ATmosph\u00e8res EXplosibles \u00bb. Le mot d\u00e9signe \u00e0 la fois un risque physique et le cadre europ\u00e9en qui l’encadre. Une explosion exige trois \u00e9l\u00e9ments r\u00e9unis au m\u00eame endroit. D\u2019abord, un combustible (gaz, vapeurs, brouillards, poussi\u00e8res). Puis, un comburant (l’oxyg\u00e8ne de l’air). Enfin, une source d’\u00e9nergie (\u00e9tincelle, surface chaude, \u00e9lectricit\u00e9 statique). Dans une raffinerie ou sur un FPSO, on ne supprime presque jamais les deux premiers. Reste le troisi\u00e8me, et c’est l\u00e0 que l’\u00e9quipement entre en jeu.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Deux directives \u2026 deux responsables<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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La directive 2014\/34\/UE (ATEX 114) vise les fabricants. Applicable depuis le 20 avril 2016, elle a remplac\u00e9 la directive 94\/9\/CE, que certaines pages citent pourtant encore. La directive 1999\/92\/CE (ATEX 153, parfois appel\u00e9e 137) s’adresse \u00e0 l’employeur. Il s\u2019agit d\u2019\u00e9valuer le risque, classer ses zones, consigner le tout dans un document relatif \u00e0 la protection contre les explosions. L’exploitant d\u00e9finit la zone, le fabricant garantit la machine. Notre page consacr\u00e9e \u00e0 l’<\/span>ATEX<\/span><\/a> approfondit ce cadre r\u00e9glementaire et les certifications internationales.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Zone ATEX et cat\u00e9gorie : le langage commun entre le site et la machine<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Du zonage \u00e0 la cat\u00e9gorie d'\u00e9quipement<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Le zonage classe chaque emplacement selon la fr\u00e9quence de l’atmosph\u00e8re explosive : zones 0, 1 et 2 pour les gaz, 20, 21 et 22 pour les poussi\u00e8res. La zone 0 conna\u00eet une atmosph\u00e8re explosive en permanence ou pendant de longues p\u00e9riodes, tandis qu’en zone 2 ou 22 elle n’appara\u00eet pas en fonctionnement normal et ne dure que bri\u00e8vement. \u00c0 chaque niveau correspond une cat\u00e9gorie d’\u00e9quipement ATEX : 1 pour les zones 0 et 20, 2 pour les zones 1 et 21, 3 pour les zones 2 et 22. Plus la zone est expos\u00e9e, plus l’appareil doit conserver de marge de s\u00e9curit\u00e9, y compris en cas de d\u00e9faut.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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D\u00e9coder un marquage<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Prenons \u00ab 3G IIB T3 \u00bb, notation courante sur les \u00e9quipements que nous certifions. Le 3 est la cat\u00e9gorie, donc une utilisation en zone 2. Le G signale un gaz (D pour les poussi\u00e8res). IIB d\u00e9signe le groupe de gaz, de IIA \u00e0 IIC selon la facilit\u00e9 d’inflammation, l’hydrog\u00e8ne relevant du IIC. T3 plafonne la temp\u00e9rature de surface \u00e0 200 \u00b0C. Une machine T6, limit\u00e9e \u00e0 85 \u00b0C, demande bien plus d’ing\u00e9nierie.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Machine ATEX : que faire quand aucune version certifi\u00e9e n'existe ?<\/h2>\t\t\t\t<\/div>\n\t\t
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Remplacer ou transformer<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Remplacer reste le r\u00e9flexe tant qu’un mod\u00e8le certifi\u00e9 existe. Pour un groupe \u00e9lectrog\u00e8ne de forte puissance, une pompe tr\u00e8s haute pression ou un engin produit en petite s\u00e9rie, il reste introuvable. La transformation ATEX prend alors le relais : on modifie la machine, neuve ou en service, jusqu’\u00e0 ce qu’elle r\u00e9ponde \u00e0 la zone vis\u00e9e. Le bon niveau n’est ni excessif ni insuffisant, et revoir le zonage ou les conditions d’usage avec l’exploitant \u00e9vite parfois des modifications co\u00fbteuses.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Conversion passive, conversion active<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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La conversion passive applique des modes de protection normalis\u00e9s : enveloppes, pare-flammes, barri\u00e8res qui emp\u00eachent l’inflammation ou sa propagation. La conversion active ajoute une surveillance, comme des d\u00e9tecteurs de gaz qui r\u00e9agissent avant qu’une concentration dangereuse ne s’installe. CentrExpert d\u00e9tient un brevet europ\u00e9en pour un syst\u00e8me de d\u00e9tection de gaz autonome, sans fil et auto-calibrant.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Des sources d'inflammation pas toujours \u00e9lectriques<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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On pense au moteur ou au luminaire. L’inflammation vient aussi d’un roulement qui frotte, d’une courroie qui charge en statique, d’un collecteur d’\u00e9chappement br\u00fblant. Les \u00e9quipements non \u00e9lectriques rel\u00e8vent des normes EN ISO 80079-36 et 37, les composants \u00e9lectriques de la s\u00e9rie EN 60079. Une transformation s\u00e9rieuse traite la machine enti\u00e8re.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tUn \u00e9quipement<\/br> \u00e0 transformer ?\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\u00a0Transmettez-nous sa fiche technique et la zone vis\u00e9e. Nos experts vous indiquent le niveau de transformation \u00e0 pr\u00e9voir<\/span><\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\tContactez-nous<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Ce qu'on attend d'un partenaire de transformation ATEX<\/h2>\t\t\t\t<\/div>\n\t\t
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Une m\u00e9thode tra\u00e7able<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Chaque transformation est un projet \u00e0 part enti\u00e8re. Chez CentrExpert, tout commence par une analyse de risque exhaustive (\u00e9tincelles, points chauds, contraintes du site). Viennent ensuite la conception d\u00e9taill\u00e9e, l’int\u00e9gration des \u00e9l\u00e9ments ATEX, un test d’ensemble en proc\u00e9dure de check-out, puis la remise d’un dossier technique complet : sch\u00e9mas \u00e9lectriques, nomenclatures, manuel, certificats. La d\u00e9marche est d\u00e9taill\u00e9e sur la page transformation ATEX<\/span><\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Des r\u00e9f\u00e9rences de terrain<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Certains engins exigent une cinquantaine de modifications, d’autres pr\u00e8s d’une centaine. Groupes \u00e9lectrog\u00e8nes, compresseurs, chariots, grues : CentrExpert intervient en zone 1 comme en zone 2, sur plateformes et FPSO comme sur sites Seveso, jusqu’\u00e0 1 200 kW. Pour les besoins hors catalogue, le bureau d’\u00e9tudes propose la cr\u00e9ation ATEX sur mesure<\/span><\/a>. La gamme compl\u00e8te des machines et \u00e9quipements ATEX<\/span><\/a> et les secteurs<\/span><\/a> d’intervention sont d\u00e9taill\u00e9s en ligne.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Une responsabilit\u00e9 assum\u00e9e<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Fond\u00e9e fin 2011, l’entreprise \u00e9met sa d\u00e9claration CE sous sa propre responsabilit\u00e9. Auditeur certifi\u00e9 Ism-ATEX par l’INERIS et organisme de formation certifi\u00e9 Qualiopi, elle pr\u00e9sente son parcours sur la page \u00e0 propos<\/span><\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Maintenance et formation ATEX : ce qui fait durer la conformit\u00e9<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Une machine conforme \u00e0 la livraison peut cesser de l’\u00eatre apr\u00e8s une intervention approximative : pi\u00e8ce non \u00e9quivalente, presse-\u00e9toupe mal serr\u00e9, joint oubli\u00e9. Le guide INERIS Om\u00e9ga 36 demande de d\u00e9finir les comp\u00e9tences requises pour superviser ou r\u00e9aliser la maintenance des \u00e9quipements \u00e9lectriques et non \u00e9lectriques. D’o\u00f9 l’int\u00e9r\u00eat d’une formation ATEX pour les techniciens et d’audits r\u00e9guliers, deux services de l’offre Audit and training<\/span><\/a>. CentrExpert n’assure pas la maintenance courante : elle forme ceux qui l’assurent.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Trois informations pour lancer votre projet avec CentrExpert<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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La zone vis\u00e9e, le type de machine et son environnement d’usage suffisent pour d\u00e9marrer. Avec elles, l’\u00e9quipe de CentrExpert \u00e9tablit ce qui est r\u00e9alisable, \u00e0 quel niveau de protection et avec quel dossier \u00e0 la cl\u00e9. Parlons de votre projet ATEX : contactez CentrExpert<\/span><\/a> ou retrouvez l’ensemble de l’offre sur notre site<\/span><\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tBesoin de plus d'informations ?\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Demandez d\u00e8s maintenant nos experts certifi\u00e9s ATEX pour s\u00e9curiser vos sites.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\tContactez-nous<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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FAQ<\/h2>\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<\/rect><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tPeut-on transformer une machine existante en ATEX ?<\/a>\n\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t

Oui, dans la plupart des cas o\u00f9 la machine, mobile ou fixe, n’est pas produite en grande s\u00e9rie : chariots, groupes \u00e9lectrog\u00e8nes, compresseurs, pompes tr\u00e8s haute pression. Une \u00e9tude pr\u00e9alable \u00e9tablit jusqu’o\u00f9 la transformation est r\u00e9alisable pour la zone vis\u00e9e.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<\/rect><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tQui est responsable apr\u00e8s la transformation ?<\/a>\n\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t

Celui qui \u00e9met la d\u00e9claration de conformit\u00e9 en porte la responsabilit\u00e9, d’o\u00f9 l’importance d’un dossier technique complet. L’exploitant garde la sienne : zonage, conditions d’usage, maintenance. Le contrat pr\u00e9cise la r\u00e9partition.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<\/rect><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tFaut-il former les techniciens de maintenance ?<\/a>\n\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t

L’employeur doit s’assurer que les intervenants ma\u00eetrisent les sp\u00e9cificit\u00e9s de la zone. Une formation d\u00e9di\u00e9e, comme celle que dispense CentrExpert, est la voie la plus directe pour y r\u00e9pondre.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Anticipating ATEX requirements during the design phase helps avoid costly late-stage modifications. A structured approach secures the project and optimizes time-to-market.<\/p>","protected":false},"author":1,"featured_media":2834,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6592","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"\nATEX : de la zone \u00e0 la machine conforme | CentrExpert<\/title>\n<meta name=\"description\" content=\"Zones, cat\u00e9gories, marquage : comprenez l'ATEX avant de transformer une machine. 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