{"id":527,"date":"2013-05-20T20:34:20","date_gmt":"2013-05-20T19:34:20","guid":{"rendered":"http:\/\/mdemierre.speleologie.ch\/?p=527"},"modified":"2026-05-14T16:07:38","modified_gmt":"2026-05-14T15:07:38","slug":"detecteurs-de-gaz-portables","status":"publish","type":"post","link":"https:\/\/www.techt.ch\/mdemierre\/?p=527","title":{"rendered":"D\u00e9tecteurs de gaz portables"},"content":{"rendered":"<p>En chantier souterrain, il faut assurer la qualit\u00e9 de l&rsquo;air, soit :<\/p>\n<ul>\n<li><span style=\"line-height: 1.714285714;\">Oxyg\u00e8ne 19-21%<\/span><\/li>\n<li><span style=\"line-height: 1.714285714;\">Valeurs limites des substances dangereuses (VME et VLE)<\/span><\/li>\n<\/ul>\n<p>Ceci est particuli\u00e8rement important avec les fum\u00e9es de tirs lors de l&rsquo;utilisation d&rsquo;explosifs (minage). Des appareils de d\u00e9tection sont n\u00e9cessaire, certaines substances n&rsquo;\u00e9tant m\u00eame pas d\u00e9tectables par nos sens.<\/p>\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe loading=\"lazy\" title=\"Mesure de la qualit\u00e9 de l&#039;air lors de minage en milieu confin\u00e9\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/UN3mY5AOtrc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>Lorsque plusieurs \u00e9quipe sont actives en milieu confin\u00e9, chaque \u00e9quipe doit disposer de moyens de mesures de la qualit\u00e9 de l&rsquo;air. Ceci est tout particuli\u00e8rement vrais lors de l&#8217;emplois d&rsquo;explosifs, les gaz toxiques pouvant \u00eatre d\u00e9plac\u00e9s et provoquer des intoxications \u00e0 distance ou dans certaines galeries peu\/pas ventil\u00e9es ailleurs que sur le lieu du tir.<\/p>\n<p>Appareils de d\u00e9tection mono-gaz :<\/p>\n<ul>\n<li><span style=\"line-height: 1.714285714;\">CO pour le minage au cordeau (insuffisant pour les autres explosifs !)<\/span><\/li>\n<li><span style=\"line-height: 1.714285714;\">O2 pour le milieu souterrain<\/span><\/li>\n<\/ul>\nngg_shortcode_0_placeholder\n<p>Appareils de d\u00e9tection Multi-gaz, avec :<\/p>\n<ul>\n<li><span style=\"line-height: 1.714285714;\">CO, NO2 et CO2 pour le minage<\/span><\/li>\n<li><span style=\"line-height: 1.714285714;\">H2S, O2 et Ex pour \u00eatre complet en souterrain<\/span><\/li>\n<\/ul>\nngg_shortcode_1_placeholder\n<p>Les appareils Dr\u00e4ger (<span style=\"color: #3366ff;\"><a href=\"http:\/\/www.draeger.ch\" target=\"_blank\"><span style=\"text-decoration: underline; color: #3366ff;\">http:\/\/www.draeger.ch<\/span><\/a><\/span>) sont recommand\u00e9s. A noter aussi les d\u00e9tecteurs honneywell toxipro, BW technologies Gas Alert Microclip XT et le CO m\u00e8tre Pro de Nanosense (le moins ch\u00e8re \u00e0 l&rsquo;achat et \u00e0 l&rsquo;utilisation, mais aussi le moins pr\u00e9cis)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En chantier souterrain, il faut assurer la qualit\u00e9 de l&rsquo;air, soit : Oxyg\u00e8ne 19-21% Valeurs limites des substances dangereuses (VME [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":528,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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