1. Respirator Selection based on OSHA APFs
Scott Shinn, CIH, Technical Service Specialist, 3M Company

2. AGENDA Types of Respiratory Protection Definitions
Respirator Selection Process
Examples of Acceptable Respiratory Protection

3. Respiratory Protection
Air Purifying Respirator
Negative Pressure Respirator

4. Respiratory Protection
Air Purifying Respirator
Powered Air Purifying Respirator (PAPR)

5. Respiratory Protection
Atmosphere Supplying Respirator

6. Respiratory Protection
Self-Contained Breathing Apparatus (SCBA)

7. Definitions Assigned Protection Factor (APF)
the workplace level of respiratory protection that a respirator or class of respirators is expected to provide to employees when the employer implements a continuing, effective respiratory protection program.

8. Definitions Maximum Use Concentration (MUC)
the maximum atmospheric concentration of a hazardous substance from which an employee can be expected to be protected when wearing a respirator, and is determined by the APF of the respirator and the exposure limit of the hazardous substance. (APF X OEL)
OEL = Occupational Exposure Limit

9. Definitions Immediately Dangerous to Life or Health (IDLH)
an atmosphere that poses an immediate threat to life, would cause irreversible adverse health effects, or would impair an individual's ability to escape from a dangerous atmosphere.

10. Respiratory Protection Program
Per 29 CFR Written Respiratory Protection Program must include…
Procedures for selecting respirators
Medical evaluation
Fit testing
Use of respirators
Maintenance and care of respirators
Breathing air quality and use
Training
Program evaluation
Recordkeeping

11. Respirator Selection Process
Exposure Assessment
Typically determined through air monitoring
Determine APF Required
Concentration in Air ÷ OEL (C/OEL)
APF Table
Other Considerations

12. Assigned Protection Factors

13. Assigned Protection Factors
Assigned Protection Factors for the Revised Respiratory Protection Standard, OSHA
Original Illustrations created by Attiliis & Associates

14. Assigned Protection Factors
APF=1000 if manufacture has documentation
Assigned Protection Factors for the Revised Respiratory Protection Standard, OSHA Original Illustrations created by Attiliis & Associates

15. Assigned Protection Factors
Also includes hooded supplied air respirator
APF=1000 if manufacturer has documentation
Assigned Protection Factors for the Revised Respiratory Protection Standard, OSHA
Original Illustrations created by Attiliis & Associates

16. Assigned Protection Factors
Assigned Protection Factors for the Revised Respiratory Protection Standard, OSHA
Original Illustrations created by Attiliis & Associates

17. Example 1: Styrene OEL = 50 ppm
Voluntary TWA-OEL for Styrene Industry
Exposure
Respiratory Protection
≤ 500 ppm
Half Facepiece with OV Cartridge
Any other organic vapor or supplied air respirator with an APF ≥ 10
> 500 ppm to ≤ 1250 ppm
PAPR with OV Cartridge and Hood/Helmet, or Loose Fitting Facepiece
Continuous flow supplied-air system with Hood/Helmet, or Loose Fitting Facepiece
Any other organic vapor or supplied air respirator with an APF ≥ 25
> 1250 ppm to ≤ 2500 ppm
Full Facepiece with OV Cartridge
Any other organic vapor or supplied air respirator with an APF ≥ 50
> 2500 ppm to < 5000 ppm
PAPR with OV Cartridge and Full Facepiece or Hood/Helmet(1)
Continuous flow supplied-air system with Full Facepiece or Hood/Helmet(1)
≤ 5000 ppm (IDLH)
SCBA
(1) Manufacturer must demonstrate protection factor of 1000

18. Example 2: Styrene OEL = 20 ppm
ACGIH TLV-TWA for Styrene
Exposure
Respiratory Protection
≤ 200 ppm
Half Facepiece with OV Cartridge
Any other organic vapor or supplied air respirator with an APF ≥ 10
> 200 ppm to ≤ 500 ppm
PAPR with OV Cartridge and Hood/Helmet, or Loose Fitting Facepiece
Continuous flow supplied-air system with Hood/Helmet, or Loose Fitting Facepiece
Any other organic vapor or supplied air respirator with an APF ≥ 25
> 500 ppm to ≤ 1000 ppm
Full Facepiece with OV Cartridge
Any other organic vapor or supplied air respirator with an APF ≥ 50
> 1000 ppm to < 5000 ppm
PAPR with OV Cartridge and Full Facepiece or Hood/Helmet(1)
Continuous flow supplied-air system with Full Facepiece or Hood/Helmet(1)
≤ 5000 ppm (IDLH)
SCBA
(1) Manufacturer must demonstrate protection factor of 1000

19. Scott Shinn, CIH, Technical Service Specialist, 3M Company
Thank You!
Scott Shinn, CIH, Technical Service Specialist, 3M Company