The Immediately Dangerous to Life or Health (IDLH) value for chlorine has been subject to significant reevaluation since its inception in the 1970s. The history reflects a transition from an early consensus on occupational safety to more rigorous, data-driven toxicological assessments.
The history of ammonia’s Immediately Dangerous to Life or Health (IDLH) levels is a classic example of how occupational safety standards evolve as toxicological data becomes more refined. Since the concept was first introduced in the 1970s, the ammonia limit has undergone significant downward revisions based on a better understanding of acute human tolerance.
The Facility includes storage tanks, pumps, and transfer piping, and other buildings, structures, equipment, installations, or substance-emitting stationary activities from which an accidental release of a regulated substance may occur; which belong to the same industrial group; which are located on one or more contiguous properties; and which are under the control of the same
On 28 September 2019, a cargo tank containing styrene monomer on board the Cayman Islands-registered chemical tanker Stolt Groenland ruptured due to runaway polymerization. The catastrophic rupture released a large quantity of vapor into the atmosphere, which subsequently ignited. Fire-fighting efforts by the emergency services took over six hours and involved more than 700 personnel
Reporting Period: October 2024 – September 2025 This report summarizes the enforcement activity for 29 CFR 1910.252, which covers general requirements for welding, cutting, and brazing. The data reflects current penalty amounts and identifies the economic sectors most frequently cited. Executive Summary During the specified period, OSHA issued 160 citations across 115 inspections, resulting in
The investigation is NOT complete, but we can clearly see Hot Work was taking place within 10′ of the origin of this fire. In the video below, we can see the welders were actually using wooden pallets as work platforms, and the large pile of mattress foam was a mere ~10′ away. We can not
So I asked Google Gemini… What are the LEL correction factors for the top 5 direct reading instruments? I asked this as I wanted a side-by-side comparison of the DIFFERENT correction factors for these five (5) different meters. Some of the variation is 100% greater, so the moral of the story is that when you
Background: A company has three (3) different types of locks that you define as follows:
There are very few instances where OSHA uses such clear language, but in 1910.252(a) they use the phrase “absolutely certain” and for good reason! This explosion occurred at a wastewater treatment plant in the city of Gumi, South Korea, on October 19, 2016. 1910.252(a)(3)(i) Used containers.No welding, cutting, or other hot work shall be performed
Or maybe you will. Got this from a friend today and its amazing footage of what a worker will do, either on their own accord or instructed to it, to get a job done. Members can view the video below and download it from the Video Library (Unsafe Acts Category).
I have had a numerous discussions with companies regarding this new push for “trans-loading”. Trans-loading is defined as: “Transloading means the transfer of a hazardous material by any person from one bulk packaging to another bulk packaging, from a bulk packaging to a non-bulk packaging, or from a non-bulk packaging to a bulk packaging for
Low humidity makes most LEL (Lower Explosive Limit) detectors read lower than they should, because catalytic‑bead sensors depend on moisture for heat transfer and baseline stability. This can lead to under‑reporting of gas concentration, slower response, and—in extreme dryness—temporary sensor desensitization. Below is a clear, technically grounded explanation based on how LEL sensors work and
