ISO 21904-4:2020
Current
The latest, up-to-date edition.
Health and safety in welding and allied processes Equipment for capture and separation of welding fume Part 4: Determination of the minimum air volume flow rate of capture devices
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
French, English
21-02-2020
This document specifies two methods for establishing the minimum air volume flow rate. One method is dedicated for use with captor hoods, nozzles and slot nozzles with a ratio of slot length to hose diameter of 8:1 or less. The other method is dedicated for use with on-gun extraction devices.
These methods are not applicable to down draught tables.
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