{"id":1950,"date":"2023-02-22T11:39:38","date_gmt":"2023-02-22T10:39:38","guid":{"rendered":"https:\/\/www.gt-engineering.it\/approfondimenti\/%tipologia_approfondimento%\/cei-en-iec-60079-10-1-nuova-edizione-settembre-2021\/"},"modified":"2026-05-09T12:40:34","modified_gmt":"2026-05-09T11:40:34","slug":"cei-en-iec-60079-10-1-new-edition-september-2021","status":"publish","type":"approfondimento","link":"https:\/\/www.gt-engineering.it\/en\/insights\/atex-risk\/cei-en-iec-60079-10-1-new-edition-september-2021\/","title":{"rendered":"Latest edition of EN IEC 60079-10-1"},"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\/02\/60079-11-sdfg1-768x558.png-150x150.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"218\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/60079-11-sdfg1-768x558.png-300x218.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"558\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/60079-11-sdfg1-768x558.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"558\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/60079-11-sdfg1-768x558.png.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\/02\/60079-11-sdfg1-768x558.png.webp\"\r\n                                                        title=\"60079-11-sdfg1-768&#215;558.png\"\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>The latest edition of <em><strong>IEC 60079-10-1<\/strong>: Explosive atmospheres \u2013 Part 10-1: Classification of areas \u2013 Explosive gas atmospheres<\/em> was published at the end of 2020.<\/p>\n<p>This edition was implemented in UK in April 2021. <strong>BS EN IEC 60079-10-1<\/strong>: Explosive atmospheres Part 10-1: Classification of areas \u2013 Explosive gas atmospheres.<\/p>\n<p>Hereafter are the main changes compared to the previous edition:<\/p>\n<p>\u2022 The exclusion from the scope of application <strong>for low pressure combustible gases<\/strong> is no longer present in art.1. This aspect is now reported in art. 5.3.2. Basically, nothing has changed.<\/p>\n<p>\u2022 The definition of \u201c<strong>NE<\/strong>\u201d is more complex and includes:<\/p>\n<p>&#8211; Limitations for the explosion pressure<\/p>\n<p>&#8211; Limitations for the heat emitted during the explosion<\/p>\n<p>&#8211; For gases with pressures above 10 barg a risk assessment is required<\/p>\n<p>&#8211; For gases with pressures above 20 barg, NE should not be applied unless a detailed risk assessment allows it<\/p>\n<p>\u2022 <strong>The minimum speed<\/strong> to be taken for indoor environments (set by the 2nd Ed. at 0.05 m\/s) <strong>has been removed<\/strong><\/p>\n<p>\u2022 <strong>The safety factor k<\/strong> is no longer present in the calculation of the release characteristic used in figure D.1; then, standard allows for a less conservative approach.<\/p>\n<p>\u2022 Formulas C.2 to C.6 for the calculation of <strong>air flow rates<\/strong> have been modified<\/p>\n<p>\u2022 <strong>The minimum hazardous distance<\/strong>s shown in nomogram D.1 are <strong>fixed to 1 m<\/strong><\/p>\n<p>\u2022<strong> The equation of evaporation rate from a pool<\/strong> has been corrected<\/p>\n<p>\u2022 The determination <strong>of the hazardous distances<\/strong> is no longer feasible using the nomogram for indoor environments at low and medium dilution<\/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>In December 2021 the new edition of EN IEC 60079-10-1 has been published. All standards that conflict with EN IEC 60079-10-1:2021 must be withdrawn by 22\/01\/202&#8230;<\/p>\n","protected":false},"author":1,"featured_media":48560,"parent":0,"menu_order":48,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tipologia_approfondimento":[53],"class_list":["post-1950","approfondimento","type-approfondimento","status-publish","has-post-thumbnail","hentry","tipologia_approfondimento-atex-risk"],"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>Last edition of EN IEC 60079-10-1<\/title>\n<meta name=\"description\" content=\"In December 2021 the new edition of EN IEC 60079-10-1 has been published. 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