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Health and safety in welding and allied processes. Requirements, testing and marking of equipment for air filtration -- Determination of the capture efficiency of on-torch welding fume extraction devices
This document 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.
It 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:
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