Welding Exhaust Cfm. Overexposure to welding fumes and gases can cause dizziness illness and even unconsciousness and death. 15 feet x 100 CFM per ft 150 CFM 457mm x 155 LS per m 70 LS.
These fans can be set at door openings to help draw cooler air into the welding shop or room or turned the other direction to pull hot stale air out of the room. Advantages of high-vacuum systems are greater flexibility for job adaptation more efficient means of fume removal and greater visibility to the welder due to reduced clouds of fumes and vapors being created. Dependant on factors such as air velocity CFM welder position and ambient air movement8.
According to OSHA 29 CFR 1910252c the following spaces require mechanical ventilation.
15 feet x 100 CFM per ft 150 CFM 457mm x 155 LS per m 70 LS. These fans can be set at door openings to help draw cooler air into the welding shop or room or turned the other direction to pull hot stale air out of the room. Advantages of high-vacuum systems are greater flexibility for job adaptation more efficient means of fume removal and greater visibility to the welder due to reduced clouds of fumes and vapors being created. Minimum exhaust rate 250 cfmft2 from Table II Minimum exhaust volume 15 x 250 3750 cfm.