Title 10

PART 20 APPENDIX A



Appendix A to Part 20 - Assigned Protection Factors for Respirators a

10:1.0.1.1.16.15.76.3.7 : Appendix A

Appendix A to Part 20 - Assigned Protection Factors for Respirators a
Operating mode Assigned
Protection
Factors
I. Air Purifying Respirators [Particulate b only] c:
Filtering facepiece disposable d Negative Pressure ( d)
Facepiece, half e Negative Pressure 10
Facepiece, full Negative Pressure 100
Facepiece, half Powered air-purifying respirators 50
Facepiece, full Powered air-purifying respirators 1000
Helmet/hood Powered air-purifying respirators 1000
Facepiece, loose-fitting Powered air-purifying respirators 25
II. Atmosphere supplying respirators [particulate, gases and vapors f]:
1. Air-line respirator:
Facepiece, half Demand 10
Facepiece, half Continuous Flow 50
Facepiece, half Pressure Demand 50
Facepiece, full Demand 100
Facepiece, full Continuous Flow 1000
Facepiece, full Pressure Demand 1000
Helmet/hood Continuous Flow 1000
Facepiece, loose-fitting Continuous Flow 25
Suit Continuous Flow ( g)
2. Self-contained breathing Apparatus (SCBA):
Facepiece, full Demand h 100
Facepiece, full Pressure Demand i 10,000
Facepiece, full Demand, Recirculating h 100
Facepiece, full Positive Pressure Recirculating i 10,000
III. Combination Respirators:
Any combination of air-purifying and atmosphere-supplying respirators Assigned protection factor for type and mode of operation as listed above.