QTP4B071-14 governs the approval and selection of respiratory protective equipment for contaminant-related workplace hazards.
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.
The respirator must be appropriate for the contaminant's physical form and chemical properties and the conditions under which it will be used.
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.
If any such guidance exists for a contaminant of concern, follow those guidelines and requirements. (paragraph 1)
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)
If the exposure limit is an 8 hour limit the TWA used must be on 8 hour average. (paragraph 2)