Hazardous Materials

In every 24-hour HAZMAT course, we teach, we find that students getting their first official dose of “chemical safety” are shocked to find out that most gases at their facility are NOT white in color. Most have seen dozens of videos over their adult lives showing these large white clouds forming during releases of hazardous…...

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For many HAZMAT students, learning that a HAZMAT shipped as a Non-Flammable Class 2 HAZMAT can actually ignite is a sobering fact of emergency response. But when they find out this HAZMAT is anhydrous ammonia (NH3) there is a level of disbelief. But it was this week 30 years ago (9/17/84) at approximately 4:00 p.m.,…...

NIOSH launches the NIOSH Center for Direct Reading and Sensor Technologies (NCDRST). The new virtual center will serve as a home for NIOSH’s longstanding work in the area of exposure assessment devices—work that is done across the Institute.  The use of sensors has increased exponentially in professional applications and in everyday life. Countless remote wireless…...

The NPRM proposes enhanced tank car standards, a classification and testing program for mined gases and liquids and new operational requirements for high-hazard flammable trains (HHFT) that include braking controls and speed restrictions. Specifically, within two years, it proposes the phase out of the use of older DOT 111 tank cars for the shipment of…...

I have written a number of articles on the “Limitations of Combustible Gas Indicator, especially about the limitations of the LEL sensors and the “correction calculations”. I thought this piece in OSHA’s Technical Manual was well written and explains the limitation well. So if you did not believe me or understand what I was trying…...