From the Archives: Seat Installation Failure

A tractor operator was injured in the groin area when the machine’s seat clamps failed, releasing the seat. The seat was improperly installed using single bolted electrical straps (image below). The tractor was operated for a significant amount of time with this hazard, long enough for the electrical straps to rust. New electrical straps were … More From the Archives: Seat Installation Failure

Erroneous Drug Quantity Measurements using Uncalibrated FTIR/ATR Instruments

When prosecutors present the results of a piece of evidence analyzed in the lab, a question often comes up: how good is the measurement? It’s an important one to ask, because the error bars tell you how good the measurement is. If a Breathalyzer measurement was collected by police, and the result was near the … More Erroneous Drug Quantity Measurements using Uncalibrated FTIR/ATR Instruments

Practical Cybersecurity

Dr. Elizabeth Jensen’s presentation to the American Society of Safety Engineers (soon to be Safety Professionals) Energy Corridor meeting is linked below. Practical Cybersecurity: Where You Fit into the Big Picture

Stairwells and the Codes

Being that humans are creatures of habit, an uneven stairwell challenges users, even those grown familiar with asymmetries in construction. The most critical components of a stairwell to avoid becoming a tripping or slipping hazard include a decent (and uniform) tread and riser value. In the case of International Building Code specifications, this is 11 … More Stairwells and the Codes

Incidents & Accident Models

There are various models that emphasize different components that combined into an accident. While Heinrich’s Axioms of Industrial Safety are most widely applied, there are others that target relationships among the contributing factors to an injury. As a brief introduction, I’d like to share a few of our investigations and a model that aligns with … More Incidents & Accident Models

Understanding The I-85 Fire

As documented in “ATLANTA BRIDGE COLLAPSE: What burned under the I-85 overpass?” by Richard Elliot and Rikki Klaus of wsbtv, the material stored under the I-85 bridge for 10 years was High Density Polyethylene. As I discuss what that means fire-safety-wise, I’ll be generally talking about polyethylene. Polyethylene is constructed from the combination of ethylene … More Understanding The I-85 Fire