{"id":25598,"date":"2023-10-11T16:29:00","date_gmt":"2023-10-11T20:29:00","guid":{"rendered":"https:\/\/world.dan.org\/?post_type=dan_alert_diver&#038;p=25598"},"modified":"2023-10-19T11:43:12","modified_gmt":"2023-10-19T15:43:12","slug":"helium-gas-purity-what-is-pure-enough","status":"publish","type":"dan_alert_diver","link":"https:\/\/world.dan.org\/fr\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/","title":{"rendered":"Puret\u00e9 de l'h\u00e9lium gazeux : Qu'est-ce qui est suffisamment pur ?"},"content":{"rendered":"<p><strong>LES TROIS GAZ EN G\u00c9N\u00c9RAL<\/strong> Les gaz utilis\u00e9s en plong\u00e9e r\u00e9cr\u00e9ative et technique sont l'oxyg\u00e8ne, l'azote et l'h\u00e9lium. L'azote est le plus abondant et constitue g\u00e9n\u00e9ralement le gaz par d\u00e9faut, mais personne ne semble se pr\u00e9occuper de sa puret\u00e9, bien que la Compressed Gas Association (CGA) des \u00c9tats-Unis fournisse des niveaux de puret\u00e9, ou grades, pour diverses applications.&nbsp;<\/p>\n\n\n\n<p>L'h\u00e9lium est le plus cher. Il repr\u00e9sente moins de 0,001 % de l'atmosph\u00e8re de notre plan\u00e8te, soit 50 parties par million (ppm), et se liqu\u00e9fie \u00e0 une temp\u00e9rature extr\u00eame de -452\u00b0F (-269\u00b0C). L'h\u00e9lium est le deuxi\u00e8me gaz le plus abondant dans l'univers, et notre soleil en produit des centaines de tonnes chaque seconde. Comme nous ne pouvons pas r\u00e9colter l'h\u00e9lium solaire, nous d\u00e9pendons de la d\u00e9sint\u00e9gration radioactive pour produire ce dont nous avons besoin. Heureusement, la forme que nous extrayons est enti\u00e8rement stable.<\/p>\n\n\n\n<p>En ce qui concerne la puret\u00e9 de l'h\u00e9lium que les plongeurs doivent prendre en compte lorsqu'ils pr\u00e9parent leurs m\u00e9langes de gaz, la sp\u00e9cification de l'h\u00e9lium (CGA G-9.1) utilise commod\u00e9ment \"plong\u00e9e\/applications respiratoires\". La sp\u00e9cification couvre une gamme de ce que nous appelons les grades, ou niveaux de v\u00e9rification de la qualit\u00e9, qui d\u00e9finissent la puret\u00e9 requise et les niveaux de contaminants autoris\u00e9s. Chaque lot d'h\u00e9lium est analys\u00e9 pour d\u00e9terminer s'il r\u00e9pond aux niveaux minimaux d'un grade particulier.&nbsp;<\/p>\n\n\n\n<p>La qualit\u00e9 de ballon H est la moins pure, avec 97,5 %. C'est un niveau de puret\u00e9 suffisant pour respirer, mais le probl\u00e8me est que les normes applicables \u00e0 ce type de ballon ne tiennent pas compte de tous les contaminants potentiels. Il peut contenir 0,025 % (250 ppm) de monoxyde de carbone (CO), et vous ne vous en rendriez pas compte avant de monter \u00e0 60 pieds et de commencer \u00e0 vous sentir mal.<\/p>\n\n\n\n<p>Vient ensuite la qualit\u00e9 m\u00e9dicale J, qui r\u00e9pond \u00e0 une sp\u00e9cification minimale de 99,0 % et dont la teneur en CO est certifi\u00e9e inf\u00e9rieure \u00e0 0,001 % (10 ppm). Cette qualit\u00e9 est \u00e9galement s\u00fbre pour un m\u00e9lange de gaz respiratoires, mais uniquement \u00e0 la surface. Comme l'oxyg\u00e8ne, il est consid\u00e9r\u00e9 comme un m\u00e9dicament et doit faire l'objet d'une prescription m\u00e9dicale pour \u00eatre achet\u00e9.<\/p>\n\n\n\n<p>Nous pouvons ignorer la qualit\u00e9 L, appel\u00e9e gaz de soudage. L'h\u00e9lium de qualit\u00e9 N a un niveau de puret\u00e9 de 99,997 %, ce qui signifie que les contaminants potentiels ne sont que de 30 ppm, et c'est la qualit\u00e9 que la CGA consid\u00e8re comme adapt\u00e9e \u00e0 la plong\u00e9e et aux respirateurs.<\/p>\n\n\n\n<p>Il est important de rappeler que tous ces gaz, utilis\u00e9s pour toutes sortes d'applications, des ballons \u00e0 la plong\u00e9e, sont produits sous forme d'h\u00e9lium pur. La seule diff\u00e9rence r\u00e9side dans ce que l'analyse recherche au cours du processus de v\u00e9rification.&nbsp;<\/p>\n\n\n\n<p>Nous ne voulons pas de quantit\u00e9s excessives de contaminants susceptibles d'affecter la physiologie humaine en profondeur, c'est pourquoi nous devons acheter de l'h\u00e9lium de qualit\u00e9 plong\u00e9e. M\u00eame l'h\u00e9lium de qualit\u00e9 m\u00e9dicale contient un pourcentage r\u00e9siduel de 1 %, soit 10 000 ppm, qui pourrait contenir quelque chose que nous ne voulons pas respirer \u00e0 la pression.&nbsp;<\/p>\n\n\n\n<p>L'utilisation d'h\u00e9lium avec un niveau d'impuret\u00e9 total de 30 ppm garantit que nous respirons un m\u00e9lange gazeux s\u00fbr. AD<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-dan-light-gray-color has-alpha-channel-opacity has-dan-light-gray-background-color has-background is-style-wide\"\/>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-small-font-size\">\u00a9&nbsp;<em>Alert Diver<\/em>&nbsp;- Q3 2023<\/p>","protected":false},"excerpt":{"rendered":"<p>LES TROIS GAZ G\u00c9N\u00c9RALEMENT utilis\u00e9s en plong\u00e9e r\u00e9cr\u00e9ative et technique sont l'oxyg\u00e8ne, l'azote et l'h\u00e9lium. L'azote est le plus abondant et est g\u00e9n\u00e9ralement le gaz par d\u00e9faut, mais personne ne semble se pr\u00e9occuper de sa puret\u00e9, bien que la Compressed Gas Association (CGA) des \u00c9tats-Unis fournisse des niveaux de puret\u00e9, ou grades, pour diverses applications.\u00a0<\/p>","protected":false},"featured_media":25599,"template":"","dan_alert_diver_categories":[468],"dan_alert_diver_issues":[487],"class_list":["post-25598","dan_alert_diver","type-dan_alert_diver","status-publish","has-post-thumbnail","hentry","dan_alert_diver_categories-risk-mitigation","dan_alert_diver_issues-q3-2023"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Helium Gas Purity: What Is Pure Enough? - DAN World<\/title>\n<meta name=\"description\" content=\"THE THREE GASES GENERALLY used in recreational and technical diving are oxygen, nitrogen, and helium. Nitrogen is the most abundant and is usually the default gas, but no one seems concerned about its purity, although the U.S. Compressed Gas Association (CGA) provides purity levels, or grades, for various applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/world.dan.org\/fr\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Helium Gas Purity: What Is Pure Enough?\" \/>\n<meta property=\"og:description\" content=\"THE THREE GASES GENERALLY used in recreational and technical diving are oxygen, nitrogen, and helium. Nitrogen is the most abundant and is usually the default gas, but no one seems concerned about its purity, although the U.S. Compressed Gas Association (CGA) provides purity levels, or grades, for various applications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/world.dan.org\/fr\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/\" \/>\n<meta property=\"og:site_name\" content=\"DAN World\" \/>\n<meta property=\"article:modified_time\" content=\"2023-10-19T15:43:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/world.dan.org\/wp-content\/uploads\/2023\/10\/Q3_80_RiskMitigation_Replacement-cover.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1100\" \/>\n\t<meta property=\"og:image:height\" content=\"615\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/alert-diver\\\/article\\\/helium-gas-purity-what-is-pure-enough\\\/\",\"url\":\"https:\\\/\\\/world.dan.org\\\/es\\\/alert-diver\\\/article\\\/helium-gas-purity-what-is-pure-enough\\\/\",\"name\":\"Helium Gas Purity: What Is Pure Enough? - DAN World\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/alert-diver\\\/article\\\/helium-gas-purity-what-is-pure-enough\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/alert-diver\\\/article\\\/helium-gas-purity-what-is-pure-enough\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/world.dan.org\\\/wp-content\\\/uploads\\\/2023\\\/10\\\/Q3_80_RiskMitigation_Replacement-cover.jpg\",\"datePublished\":\"2023-10-11T20:29:00+00:00\",\"dateModified\":\"2023-10-19T15:43:12+00:00\",\"description\":\"THE THREE GASES GENERALLY used in recreational and technical diving are oxygen, nitrogen, and helium. Nitrogen is the most abundant and is usually the default gas, but no one seems concerned about its purity, although the U.S. Compressed Gas Association (CGA) provides purity levels, or grades, for various applications.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/alert-diver\\\/article\\\/helium-gas-purity-what-is-pure-enough\\\/#breadcrumb\"},\"inLanguage\":\"fr-CA\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/world.dan.org\\\/es\\\/alert-diver\\\/article\\\/helium-gas-purity-what-is-pure-enough\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-CA\",\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/alert-diver\\\/article\\\/helium-gas-purity-what-is-pure-enough\\\/#primaryimage\",\"url\":\"https:\\\/\\\/world.dan.org\\\/wp-content\\\/uploads\\\/2023\\\/10\\\/Q3_80_RiskMitigation_Replacement-cover.jpg\",\"contentUrl\":\"https:\\\/\\\/world.dan.org\\\/wp-content\\\/uploads\\\/2023\\\/10\\\/Q3_80_RiskMitigation_Replacement-cover.jpg\",\"width\":1100,\"height\":615,\"caption\":\"Helium\\\/Oxygen Analyzer\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/alert-diver\\\/article\\\/helium-gas-purity-what-is-pure-enough\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/world.dan.org\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Helium Gas Purity: What Is Pure Enough?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/#website\",\"url\":\"https:\\\/\\\/world.dan.org\\\/es\\\/\",\"name\":\"DAN World\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/world.dan.org\\\/es\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-CA\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/#organization\",\"name\":\"DAN World\",\"url\":\"https:\\\/\\\/world.dan.org\\\/es\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-CA\",\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/world.dan.org\\\/wp-content\\\/uploads\\\/2022\\\/04\\\/DAN-World-logo-sm-52px.svg\",\"contentUrl\":\"https:\\\/\\\/world.dan.org\\\/wp-content\\\/uploads\\\/2022\\\/04\\\/DAN-World-logo-sm-52px.svg\",\"width\":175,\"height\":52,\"caption\":\"DAN World\"},\"image\":{\"@id\":\"https:\\\/\\\/world.dan.org\\\/es\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Puret\u00e9 de l'h\u00e9lium gazeux : Qu'est-ce qui est suffisamment pur ? - DAN World","description":"LES TROIS GAZ G\u00c9N\u00c9RALEMENT utilis\u00e9s en plong\u00e9e r\u00e9cr\u00e9ative et technique sont l'oxyg\u00e8ne, l'azote et l'h\u00e9lium. L'azote est le plus abondant et est g\u00e9n\u00e9ralement le gaz par d\u00e9faut, mais personne ne semble se pr\u00e9occuper de sa puret\u00e9, bien que la Compressed Gas Association (CGA) des \u00c9tats-Unis fournisse des niveaux de puret\u00e9, ou grades, pour diverses applications.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/world.dan.org\/fr\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/","og_locale":"fr_CA","og_type":"article","og_title":"Helium Gas Purity: What Is Pure Enough?","og_description":"THE THREE GASES GENERALLY used in recreational and technical diving are oxygen, nitrogen, and helium. Nitrogen is the most abundant and is usually the default gas, but no one seems concerned about its purity, although the U.S. Compressed Gas Association (CGA) provides purity levels, or grades, for various applications.","og_url":"https:\/\/world.dan.org\/fr\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/","og_site_name":"DAN World","article_modified_time":"2023-10-19T15:43:12+00:00","og_image":[{"width":1100,"height":615,"url":"https:\/\/world.dan.org\/wp-content\/uploads\/2023\/10\/Q3_80_RiskMitigation_Replacement-cover.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/world.dan.org\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/","url":"https:\/\/world.dan.org\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/","name":"Puret\u00e9 de l'h\u00e9lium gazeux : Qu'est-ce qui est suffisamment pur ? - DAN World","isPartOf":{"@id":"https:\/\/world.dan.org\/es\/#website"},"primaryImageOfPage":{"@id":"https:\/\/world.dan.org\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/#primaryimage"},"image":{"@id":"https:\/\/world.dan.org\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/#primaryimage"},"thumbnailUrl":"https:\/\/world.dan.org\/wp-content\/uploads\/2023\/10\/Q3_80_RiskMitigation_Replacement-cover.jpg","datePublished":"2023-10-11T20:29:00+00:00","dateModified":"2023-10-19T15:43:12+00:00","description":"LES TROIS GAZ G\u00c9N\u00c9RALEMENT utilis\u00e9s en plong\u00e9e r\u00e9cr\u00e9ative et technique sont l'oxyg\u00e8ne, l'azote et l'h\u00e9lium. L'azote est le plus abondant et est g\u00e9n\u00e9ralement le gaz par d\u00e9faut, mais personne ne semble se pr\u00e9occuper de sa puret\u00e9, bien que la Compressed Gas Association (CGA) des \u00c9tats-Unis fournisse des niveaux de puret\u00e9, ou grades, pour diverses applications.","breadcrumb":{"@id":"https:\/\/world.dan.org\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/#breadcrumb"},"inLanguage":"fr-CA","potentialAction":[{"@type":"ReadAction","target":["https:\/\/world.dan.org\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/"]}]},{"@type":"ImageObject","inLanguage":"fr-CA","@id":"https:\/\/world.dan.org\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/#primaryimage","url":"https:\/\/world.dan.org\/wp-content\/uploads\/2023\/10\/Q3_80_RiskMitigation_Replacement-cover.jpg","contentUrl":"https:\/\/world.dan.org\/wp-content\/uploads\/2023\/10\/Q3_80_RiskMitigation_Replacement-cover.jpg","width":1100,"height":615,"caption":"Helium\/Oxygen Analyzer"},{"@type":"BreadcrumbList","@id":"https:\/\/world.dan.org\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/world.dan.org\/"},{"@type":"ListItem","position":2,"name":"Helium Gas Purity: What Is Pure Enough?"}]},{"@type":"WebSite","@id":"https:\/\/world.dan.org\/es\/#website","url":"https:\/\/world.dan.org\/es\/","name":"DAN World","description":"","publisher":{"@id":"https:\/\/world.dan.org\/es\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/world.dan.org\/es\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-CA"},{"@type":"Organization","@id":"https:\/\/world.dan.org\/es\/#organization","name":"DAN World","url":"https:\/\/world.dan.org\/es\/","logo":{"@type":"ImageObject","inLanguage":"fr-CA","@id":"https:\/\/world.dan.org\/es\/#\/schema\/logo\/image\/","url":"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/04\/DAN-World-logo-sm-52px.svg","contentUrl":"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/04\/DAN-World-logo-sm-52px.svg","width":175,"height":52,"caption":"DAN World"},"image":{"@id":"https:\/\/world.dan.org\/es\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/world.dan.org\/fr\/wp-json\/wp\/v2\/dan_alert_diver\/25598","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/world.dan.org\/fr\/wp-json\/wp\/v2\/dan_alert_diver"}],"about":[{"href":"https:\/\/world.dan.org\/fr\/wp-json\/wp\/v2\/types\/dan_alert_diver"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/world.dan.org\/fr\/wp-json\/wp\/v2\/media\/25599"}],"wp:attachment":[{"href":"https:\/\/world.dan.org\/fr\/wp-json\/wp\/v2\/media?parent=25598"}],"wp:term":[{"taxonomy":"dan_alert_diver_categories","embeddable":true,"href":"https:\/\/world.dan.org\/fr\/wp-json\/wp\/v2\/dan_alert_diver_categories?post=25598"},{"taxonomy":"dan_alert_diver_issues","embeddable":true,"href":"https:\/\/world.dan.org\/fr\/wp-json\/wp\/v2\/dan_alert_diver_issues?post=25598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}