Bear with me on this, as I know this is getting deeper than most think about Respiratory Protection. But the vast majority of the people I train and fit test are personnel who enter/work in IDLH environments, so I get very picky about my RP practices. OSHA’s long-standing Fit Test Procedures in Mandatory Appendix A […]
The National Fire Protection Association (NFPA) officially consolidated several legacy respiratory and PPE standards—including NFPA 1981 (open-circuit SCBA) and NFPA 1982 (PASS devices)—into a single unified standard: NFPA 1970. The 2025 edition mandates three (3) primary mechanical and electronic upgrades for all new structural firefighting SCBAs:
The National Institute for Occupational Safety and Health (NIOSH) has finalized Immediately Dangerous to Life or Health (IDLH) profiles and technical analytical standards for major toxic hydrogen halides. These mandates establish airborne exposure limits to guarantee rapid worker escape under acute exposure conditions and dictate strict sampling guidelines for modern industrial hygiene. NIOSH has updated
NIOSH issued a formal Request for Information (RFI) seeking new toxicological and human health effects data to refine the established IDLH value for ammonia (NH3), which currently sits at 300 ppm. The agency is specifically looking for updated “weight-of-evidence” research on how ammonia’s chemical mode of action—particularly rapid desensitization of olfactory receptors (smell fatigue) and
OSHA advanced a deregulatory proposal to amend 29 CFR 1910.134 that would alter pre-use medical clearance protocols. The amendment would REMOVE the requirement for mandatory medical evaluations for employees using filtering facepiece respirators (FFRs, such as N95s) and loose-fitting PAPRs. The agency cited substantial administrative costs to employers and noted that physicians rarely disqualify workers
According to the federal regulatory agenda, the Department of Health and Human Services (HHS) and NIOSH are finalizing major updates to respirator certification standards under 42 CFR Part 84. Targeted for a final rule in November 2026, NIOSH is establishing a new approval class for CURs. These advanced hybrid devices integrate an open-circuit Self-Contained Breathing
There is no single, universal “margin of error” for computed respirator cartridge change-out schedules. Because software calculators—such as NIOSH’s MultiVapor™ or manufacturer-specific tools like 3M™ Select and Service Life—rely on predictive mathematical models (most commonly Gerry Wood’s adsorption model), their accuracy depends entirely on how closely the inputted parameters match real-world workplace conditions. In controlled
ABSOLUTELY NOT! I know this may not be accepted by everyone, but the medical questionnaire is a medical record, and even the safety manager does not have access to it. In fact, some of the companies I worked for forbade the record from being kept on site. Although two of my sites had on-site medical
Employees who refuse to undergo a medical evaluation cannot be assigned to work in areas where they are required to wear a respirator.
In the past 12-months I have been told by three (3) organizations that I can not audit the fit testing records because they are “personal medical records”. After some time, I finally convinced their legal team that fit tests are not medical records, and I was then allowed to audit the records. And of course,
The Respiratory Protection (RP) standard medical questionnaire for 1910.134 will NOT satisfy the HAZWOPER medical surveillance requirement. The intent and requirements for medical surveillance under HAZWOPER are very different from those required by the Respiratory Protection standard. The intent of the HAZWOPER medical surveillance requirements are two-fold:
OSHA has cited a big rig parts distributor for 16 serious safety violations after an investigation into a worker fatality found the company exposed workers to confined space and other safety hazards. OSHA initiated an inspection on Jan. 7, 2026, after an employee asphyxiated while inspecting a tanker trailer. OSHA cited the company for 16
