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ISO DIS 21904-4

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

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Organization: ISO
Publication Date: 21 January 2019
Status: active
Page Count: 17
ICS Code (Occupational safety. Industrial hygiene): 13.100
ICS Code (Welding equipment): 25.160.30
scope:

This part of ISO 21904 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.

Neither method is applicable to down draught tables.

Document History

ISO DIS 21904-4
January 21, 2019
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
This part of ISO 21904 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...

References

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