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Normas DIN – AENOR
DIN EN ISO 21904-3:2018-07

DIN EN ISO 21904-3:2018-07

Health and safety in welding and allied processes - Requirements, testing and marking of equipment for air filtration - Part 3: Determination of the capture efficiency of on-torch welding fume extraction devices (ISO 21904-3:2018); German version EN ISO 21904-3:2018

Hygiène et sécurité en soudage et techniques connexes - Exigences, essais et marquage des équipements de filtration d'air - Partie 3: Détermination de l'efficacité de captage des torches aspirantes (ISO 21904-3:2018); Version allemande EN ISO 21904-3:2018

Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren - Anforderungen, Prüfung und Kennzeichnung von Luftreinigungssystemen - Teil 3: Bestimmung des Erfassungsgrades von brennerintegrierten Absaugeinrichtungen für Schweißrauch (ISO 21904-3:2018); Deutsche Fassung EN ISO 21904-3:2018

Fecha:
2018-07 /Active
Equivalencias internacionales:

EN ISO 21904-3 (2018-03)

ISO 21904-3 (2018-02)

Resumen:
This part of ISO 21904 defines a laboratory method for measuring the welding fume capture efficiency of on-torch extraction systems. The methodology issuitable for use with all continuous wire welding processes, all material types and all weldingparameters.The method can be used to evaluate the effects of variables such as extraction flow rate, extract nozzleposition, shielding gas flow rate, welding geometry, welding torch angle, fume emission rate etc. on capture efficiency but can also be used, with specific test conditions, to determine capture efficiency.
Keywords:
Air, Air purification, Air quality, Air regeneration systems, Blowpipes, Definitions, Health protection, Marking, Occupational safety, Specification (approval), Sucking off, Suction devices, Suction plants, Testing, Welding, Welding smoke, Welding work
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