ISO 21904-3:2018

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

Publication date: Feb 28, 2018

General information

Current stage: 90.20 Effective date: Jan 15, 2023

Originator: ISO

Owner: ISO/TC 44/SC 9

Type: International Standard

ICS: 13.100 25.160.01

Languages: English French

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Status: Published

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Scope

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.

Life cycle

PREVIOUSLY

Replaces
ISO/DIS 15012-3

NOW

PUBLISHED
ISO 21904-3:2018
90.20 Standard under periodical review
Jan 15, 2023

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