{"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&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\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/","title":{"rendered":"Pureza del gas helio: \u00bfqu\u00e9 nivel de pureza es suficiente?"},"content":{"rendered":"

LOS TRES GASES QUE GENERALMENTE<\/strong> se usan en el buceo deportivo y t\u00e9cnico son el ox\u00edgeno, el nitr\u00f3geno y el helio. El nitr\u00f3geno es el m\u00e1s abundante y normalmente es el gas por defecto, pero nadie parece estar preocupado por su pureza, aunque la Asociaci\u00f3n de Gas Comprimido (Compressed Gas Association, CGA) de Estados Unidos proporciona niveles, o grados, de pureza para diversas aplicaciones. <\/p>\n\n\n\n

El helio es el m\u00e1s costoso. Constituye menos del 0,001 por ciento, o 50 partes por mill\u00f3n (ppm), de la atm\u00f3sfera de nuestro planeta y se lic\u00faa a una temperatura extrema de \u2013269 \u00b0C (\u2013452 \u00b0F). El helio es el segundo gas m\u00e1s abundante en el universo, y nuestro sol produce cientos de toneladas cada segundo. Debido a que no podemos recolectar helio solar, dependemos de la desintegraci\u00f3n radiactiva para producir lo que necesitamos. Afortunadamente, la forma que extraemos es completamente estable.<\/p>\n\n\n\n

Al considerar la pureza del helio que los buzos deben tener en cuenta al elaborar sus mezclas de gases, la especificaci\u00f3n de producto para el helio (CGA G-9.1) convenientemente utiliza \u201caplicaciones respiratorias\/de buceo\u201d La especificaci\u00f3n cubre una variedad de lo que conocemos como grados, o niveles de verificaci\u00f3n de calidad, que definen la pureza requerida y los niveles de contaminantes admisibles. Cada lote de helio es analizado para determinar si cumple con los niveles m\u00ednimos para un grado en particular. <\/p>\n\n\n\n

El grado H para globos es el menos puro con un 97,5 por ciento. Es bastante puro para la respiraci\u00f3n, pero el problema es que las normas para ese grado no detectan todos los posibles contaminantes. Podr\u00eda contener un 0,025 por ciento (250 ppm) de mon\u00f3xido de carbono (CO) y el individuo no lo sabr\u00eda hasta que comenzara a ascender desde los 18 metros (60 pies) y empezara a sentirse terriblemente mal.<\/p>\n\n\n\n

Luego est\u00e1 el grado m\u00e9dico J, que cumple con una especificaci\u00f3n m\u00ednima del 99 por ciento y est\u00e1 certificado para tener menos de 0,001 por ciento (10 ppm) de CO. Este grado tambi\u00e9n es seguro para una mezcla respiratoria, pero solo en la superficie. Al igual que el ox\u00edgeno, se considera un medicamento y para adquirirlo es necesario tener una prescripci\u00f3n m\u00e9dica.<\/p>\n\n\n\n

Podemos omitir directamente el grado L, que se conoce como gas de soldadura. El helio de grado N tiene un nivel de pureza del 99,997 por ciento, lo que significa potenciales contaminantes de solo 30 ppm, y es el grado que la CGA considera adecuado para aplicaciones de respiradores y buceo.<\/p>\n\n\n\n

Es importante recordar que todos estos grados, que se utilizan para todo desde aplicaciones de buceo y globos, son producidos como helio puro. La \u00fanica diferencia es qu\u00e9 busca el an\u00e1lisis durante el proceso de verificaci\u00f3n. <\/p>\n\n\n\n

No queremos cantidades excesivas de contaminantes que afecten la fisiolog\u00eda humana a profundidad, por lo que debemos adquirir helio de grado de buceo. Incluso el helio de grado m\u00e9dico tiene un 1 por ciento restante, que es 10.000 ppm, que podr\u00eda contener algo que no queremos respirar a presi\u00f3n. <\/p>\n\n\n\n

El uso de helio con un nivel de impureza total de 30 ppm garantiza que respiremos una mezcla respiratoria segura. AD<\/p>\n\n\n\n

<\/div>\n\n\n\n
\n\n\n\n
<\/div>\n\n\n\n

\u00a9 Alert Diver<\/em> - Q3 2023<\/p>","protected":false},"excerpt":{"rendered":"

LOS TRES GASES UTILIZADOS GENERALMENTE en el buceo recreativo y t\u00e9cnico son el ox\u00edgeno, el nitr\u00f3geno y el helio. El nitr\u00f3geno es el m\u00e1s abundante y suele ser el gas por defecto, pero nadie parece preocuparse por su pureza, aunque la U.S. Compressed Gas Association (CGA) establece niveles de pureza, o grados, para diversas aplicaciones.\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":"\nHelium 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\/es\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/\" \/>\n<meta property=\"og:locale\" content=\"es_MX\" \/>\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. 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