CFR 146F - Respiratory Protection Standard: Additional Ambient Aerosol CNC QNFT Protocols

OSHA has approved and added two additional condensation nuclei counting (CNC) quantitative fit test protocols in Appendix A - Fit Testing Procedures (Mandatory of 29 CFR 1910.134: one for elastomeric full-face and half-mask respirators, and the other for filtering facepiece respirators (Federal Register). The N.C. Commissioner of Labor adopted the revised federal rule verbatim with an effective date of February 14, 2020. 

Also reference CFR 146E - Respiratory Protection Assigned Protection Factors, Field Operations Manual Chapter 15: Industrial Hygiene Compliance, CPL 02-00-158, Inspection Procedures for the Respiratory Protection Standard, 29 CFR 1910.134, OPN 127 - Respirator Use Policy under the Cotton Dust Standard,  SN 55 - Facial Hair and Respirator Use,  SN 63 Requirements for Workers Who Are Actively Conducting Operations in IDLH Atmospheres, SN 68 - Use of Non-NIOSH Approved Respirators for Voluntary Use and OSHA Technical Manual (TED 01-00-015). Additional information and resources can be found on the safety and health topic page for Respiratory Protection.