NF-EN 12021 : La norme pour l’air comprimé destiné aux appareils de protection respiratoire isolants

Cette norme définit la qualité de l’air comprimé destiné à un usage respirable (hors milieu hospitalier).

Dans l’industrie, dès lors que des personnels sont équipés d’appareils de protection respiratoire (masques, cagoules, scaphandres...) alimentés par un réseau d’air comprimé, les valeurs limites imposées par cette norme doivent être respectées.
Les principales prescriptions sont reprises dans le tableau ci-dessous :

On voit ici qu’une ”simple” chaîne de filtration de type préfiltre + déshuileur + charbon actif ne peut suffire à la production d’air respirable.
Une chaîne complète avec traitement des gaz toxiques tels Co et Co2 est nécessaire afin de répondre à la norme et éviter tout accident qui peut, dans les cas les plus graves, s’avérer mortel.

Cette norme peut être obtenue sur le site de l’Afnor : www.afnor.fr, rubrique boutique / normes en ligne.

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