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SESK: Stuff Everyone Should Know · sesk.info/weld-respirator-niosh

In a confined space where ventilation is impossible, which agency must approve the airline respirators OSHA requires?

NIOSH.

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  1. AWS
  2. OSHA
  3. NIOSH ✔

Why: If ventilation cannot keep fumes down in a confined space, welders must use air-supplied respirators. OSHA says these must be approved by the National Institute for Occupational Safety and Health.

Huh, didn't know that: OSHA's rule also covers protective clothing, which varies with the size, nature and location of the work.

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References

Answer: NIOSH. If ventilation cannot keep fumes down in a confined space, welders must use air-supplied respirators. OSHA says these must be approved by the National Institute for Occupational Safety and Health.

  1. OSHA 29 CFR 1910.252 General requirements, welding, cutting and brazing www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.252
    airline respirators or hose masks approved for this purpose by the National Institute for Occupational Safety and Health (NIOSH)
    Checked 2026-10-10.

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