SS-EN-ISO-21904-3 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)

SS-EN-ISO-21904-3 - 2018 EDITION - CURRENT


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ISO 21904-3:2018 defines a laboratory method for measuring the welding fume capture efficiency of on-torch extraction systems. The procedure only prescribes a methodology, leaving selection of the test parameters to the user, so that the effect of different variables can be evaluated. ISO 21904-3:2018 is applicable to integrated on-torch systems and to systems where a discrete extraction system is attached to the welding torch close to the arc area. The methodology is suitable for use with all continuous wire welding processes, all material types and all welding parameters. The method can be used to evaluate the effects of variables such as extraction flow rate, extract nozzle position, shielding gas flow rate, welding geometry, welding torch angle, fume emission rate, etc., on capture efficiency.

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Designation Name

SS-EN ISO 21904-3:2018

Revision Level

2018 EDITION

Status

Current

Publication Date

March 26, 2018

Language(s)

English

Page Count

36

International Equivalent

EN ISO 21904-3:2018(IDT); ISO 21904-3:2018(IDT)