Respiratory Protection in the USA: OSHA Standards and NIOSH-Approved Respirators
Airborne hazards — including dust, fumes, vapors, gases, and biological agents — pose serious health risks to millions of American workers. OSHA's Respiratory Protection Standard and NIOSH's respirator approval program work together to ensure workers have access to effective respiratory protection.
OSHA's Respiratory Protection Standard (29 CFR 1910.134)
OSHA requires employers to establish a written respiratory protection program when respirators are necessary to protect worker health. Key program elements include:
- Procedures for selecting respirators based on the hazard
- Medical evaluations for workers who must wear respirators
- Fit testing for tight-fitting respirators
- Procedures for proper use, maintenance, and storage
- Training on respirator use and limitations
Types of Respirators
- Disposable filtering facepiece respirators (FFRs): N95, N99, N100, P100. Filter airborne particles. N95 filters at least 95% of airborne particles.
- Half-face air-purifying respirators: Reusable facepiece with replaceable cartridges for gases, vapors, and particles
- Full-face air-purifying respirators: Provide eye and respiratory protection combined
- Powered air-purifying respirators (PAPRs): Use a blower to force air through filters, providing higher protection factors
- Supplied-air respirators (SARs): Provide clean air from an external source for IDLH (immediately dangerous to life or health) environments
- Self-contained breathing apparatus (SCBA): Carry their own air supply for emergency response and confined space entry
NIOSH Approval
All respirators used for occupational protection must be NIOSH-approved. Look for the NIOSH approval number (TC-84A for FFRs) on the respirator packaging and the respirator itself. Never use non-NIOSH-approved respirators for occupational hazard protection.
Assigned Protection Factors (APF)
OSHA assigns protection factors to each respirator class. The APF represents the minimum level of protection a properly functioning respirator provides to a properly fitted and trained user:
- Disposable FFR (N95): APF 10
- Half-face APR: APF 10
- Full-face APR: APF 50
- PAPR (loose-fitting): APF 25
- SCBA (pressure demand): APF 10,000
Conclusion
Respiratory protection is a critical component of any comprehensive safety program. RANOVA USA carries NIOSH-approved N95 respirators, half-face respirators, and cartridges for a wide range of airborne hazards.
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