weld how many feet away safely
With this volume of airflow, the end of the armcan be placed 6 to 15 inches (160 â 375 mm) away from the arcand still effectively capture weld fume.Fume extraction arms generally use a 6 or 8 inch diameter hose,or hose and tubing combinations.
Mechanical ventilation shall be provided when welding or cutting is done on metals not covered in subparagraphs (5) through (12) of this paragraph. (For specific materials, see the ventilation requirements of subparagraphs (5) through (12) of this paragraph.) (a) In a space of less than 10,000 cubic feet per welder.