{"id":37444,"date":"2023-01-05T14:20:44","date_gmt":"2023-01-05T13:20:44","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=normativa_tecnica&#038;p=37444"},"modified":"2023-07-03T09:09:47","modified_gmt":"2023-07-03T08:09:47","slug":"en-80079-20-2-atmospheres-explosives-caracteristiques-des-materiaux-poussieres-combustibles-methodes-dessai","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-atex\/en-80079-20-2-atmospheres-explosives-caracteristiques-des-materiaux-poussieres-combustibles-methodes-dessai\/","title":{"rendered":"EN 80079-20-2 : Atmosph\u00e8res explosives : Caract\u00e9ristiques des mat\u00e9riaux &#8211; Poussi\u00e8res combustibles &#8211; M\u00e9thodes d&rsquo;essai"},"content":{"rendered":"\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/3\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/test-polveri-200x200-1-150x150.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 200px)\"\r\n                                width=\"200\"\r\n                                height=\"200\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/test-polveri-200x200-1.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 200px)\"\r\n                                width=\"200\"\r\n                                height=\"200\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/test-polveri-200x200-1.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 200px)\"\r\n                                width=\"200\"\r\n                                height=\"200\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/test-polveri-200x200-1.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/07\/test-polveri-200x200-1.webp\"\r\n                                                        title=\"test-polveri-200&#215;200\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p>La pr\u00e9sente partie de l&rsquo;ISO\/IEC 80079 d\u00e9crit les m\u00e9thodes d&rsquo;essai pour l&rsquo;identification des poussi\u00e8res combustibles et des couches de poussi\u00e8res combustibles afin de permettre la classification des zones o\u00f9 de tels mat\u00e9riaux existent, dans le but de s\u00e9lectionner et d&rsquo;installer correctement les \u00e9quipements \u00e9lectriques et m\u00e9caniques destin\u00e9s \u00e0 \u00eatre utilis\u00e9s en pr\u00e9sence de poussi\u00e8res combustibles.<br \/>\nElle d\u00e9crit la m\u00e9thodologie \u00e0 suivre par un laboratoire pour d\u00e9terminer si un \u00e9chantillon de poussi\u00e8re est combustible et les principales caract\u00e9ristiques d&rsquo;un \u00e9chantillon de poussi\u00e8re, comme l&rsquo;\u00e9nergie minimale d&rsquo;inflammation.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Voici quelques d\u00e9finitions tir\u00e9es de la norme.<\/p>\n<p><em><strong>3.1 poussi\u00e8res combustibles<\/strong> : particules solides finement divis\u00e9es, d&rsquo;une taille nominale inf\u00e9rieure ou \u00e9gale \u00e0 500 m, susceptibles de former des m\u00e9langes explosifs avec l&rsquo;air \u00e0 des pressions et temp\u00e9ratures atmosph\u00e9riques normales.<\/em><\/p>\n<p><em><strong>3.6 \u00e9nergie minimale d&rsquo;inflammation<\/strong> (d&rsquo;un m\u00e9lange air\/poussi\u00e8re combustible) : \u00e9nergie \u00e9lectrique la plus faible stock\u00e9e dans un condensateur qui, lors de la d\u00e9charge, est suffisante pour provoquer l&rsquo;inflammation du m\u00e9lange air\/poussi\u00e8re le plus sensible dans les conditions d&rsquo;essai sp\u00e9cifi\u00e9es.<\/em><\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n","protected":false},"excerpt":{"rendered":"<p>La pr\u00e9sente partie de l&rsquo;ISO\/IEC 80079 d\u00e9crit les m\u00e9thodes d&rsquo;essai pour l&rsquo;identification des poussi\u00e8res combustibles et des couches de poussi\u00e8res combustibles afin de permettre la classification des zones o\u00f9 de tels mat\u00e9riaux existent, dans le but de s\u00e9lectionner et d&rsquo;installer correctement les \u00e9quipements \u00e9lectriques et m\u00e9caniques destin\u00e9s \u00e0 \u00eatre utilis\u00e9s en pr\u00e9sence de poussi\u00e8res combustibles.<\/p>\n","protected":false},"author":182,"featured_media":37445,"parent":0,"menu_order":15,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[169],"class_list":["post-37444","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-normes-atex"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>EN 80079-20-2 : Atmosph\u00e8res explosives : Caract\u00e9ristiques des mat\u00e9riaux - Poussi\u00e8res combustibles - M\u00e9thodes d&#039;essai - Gt-Engineering<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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