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
When you think politicians can’t get any more foolish, they seem to never disappoint. Two committee members argued against a “one-size-fits-all” federal mandate, stating it imposes unfair burdens across vastly different regional climates and industries. One has to wonder if they even read the proposed standard.
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
On June 28, 2026, a fatal farming accident occurred in Crane Township, Paulding County, Ohio, involving a tractor pulling an anhydrous ammonia “nurse” tank. The farmer, 59, was killed. He was driving a John Deere 9220 tractor pulling an anhydrous ammonia tank through a field. Just after 4:00 PM, the machinery struck and crashed into
On May 27, 2025, a catastrophic explosion and fire erupted at a chemical manufacturing plant operated by Shandong Youdao Chemical Co., Ltd. (often referred to as Gaomi Youdao Chemical) in Gaomi City, Shandong Province, China. The explosion killed 12 people, injured 19 others, and caused widespread structural destruction throughout the surrounding area. In July 2026,
For a formal liquid bubble leak test using a detector like Swagelok Snoop, the industry-standard minimum pressure governed by ASME Section V, Article 10 and ASME B31.3 is 15 psig or 25% of the system design pressure, whichever is less. While SNOOP itself will bubble at virtually any positive pressure where gas escapes, engineering codes
As we have discussed before, the PREFERRED pressure/leak testing method is hydrostatic. This is the “rule” for all of the ASME B31 series RAGAGEPs; however, for some odd reason, many businesses believe that pneumatic testing is “easier, cleaner, and cheaper” and will just perform their testing with little to no consideration for using hydrostatic methods.
It’s an internal OSHA term for when an employer chooses to use TagOut (TO) instead of LockOut (LO). The TO has to be “equally effective” as a LO; this “Tag Plus” must be demonstrated to show that the TO is equal to an LO.
The Industrial Safety and Health Department has directed all seafood processing units to relocate labor quarters to safe locations from the processing units immediately. The order comes in the wake of the NH3 leak tragedy that left 18 workers dead, as their accommodation was in close proximity to the factory’s Engineroom. Following the incident, the
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
