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1910.252(c)(2) Ventilation for General Welding and Cutting
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Mechanical ventilation shall be provided when welding or cutting is done on metals not covered in paragraphs (c)(5) through(c)(12) of this section. (For specific materials, see the ventilation requirements of paragraphs (c)(5) through (c)(12) of this section.)
In a space of less than 10,000 cubic feet (284 m(3)) per welder.
In a room having a ceiling height of less than 16 feet (5 m).
In confined spaces or where the welding space contains partitions, balconies, or other structural barriers to the extent that they significantly obstruct cross ventilation.
Such ventilation shall be at the minimum rate of 2,000 cubic feet (57 m(3)) per minute per welder, except where local exhaust hoods and booths as per paragraph (c)(3) of this section, or airline respirators approved by the U.S. Bureau of Mines for such purposes are provided. Natural ventilation is considered sufficient for welding or cutting operations where the restrictions in paragraph (c)(2)(i) of this section are not present.
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