QTP4B071-14 — Respiratory Protection

QTP4B071-14 governs the approval and selection of respiratory protective equipment for contaminant-related workplace hazards.

Search QTP4B071-14

  • Publication number: QTP4B071-14
  • Title: Respiratory Protection
  • Date: 2024-03-07

View QTP4B071-14 on armypubs.army.mil


It covers contaminant classification, hazard-ratio calculations, special considerations, and completion of AF Form 2773. It requires appropriate respirator selection, documentation, filing, and use of OEHMIS as applicable.

Topics covered

  • Respiratory protective equipment approval
  • Contaminant classification
  • Hazard ratio calculations
  • Respirator selection
  • AF Form 2773
  • Occupational exposure limits

Questions and answers

What factors determine whether a respirator is appropriate?

The respirator must be appropriate for the contaminant's physical form and chemical properties and the conditions under which it will be used.

How is a NIOSH-approved respirator selected?

A NIOSH-approved respirator is then selected for the “situation” after the physical characteristics and functional capabilities and limitations, and the assigned protection factor have been considered.

What should be done when OSHA substance-specific standards or Air Force-approved guidance exist?

If any such guidance exists for a contaminant of concern, follow those guidelines and requirements. (paragraph 1)

How should the assigned protection factor compare with the hazard ratio?

Select respirators with an assigned protection factor (APF) greater than the value of the hazard ratio, as listed in AFI 48-137, Attachment 2. (paragraph 3)

How is the hazard ratio calculated using an eight-hour exposure limit?

If the exposure limit is an 8 hour limit the TWA used must be on 8 hour average. (paragraph 2)

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