Recently, I shared the investigation results of the fatal LPG explosion in Hillsboro, OH. The cylinder had been overfilled, leading to its catastrophic failure, which then led to LPG gas finding an ignition source in the car repair garage and exploding. I took some flak for stating that I have seen overfilling of LPG cylinders…...
Overfilling LPG Cylinders Read More »
This may be helpful to some. Use in your training or written program…. Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...
HAZCOM Classification and Labeling Table Read More »
The term “Highly Toxic” has been codified in the IFC as: A material which produces a lethal dose or lethal concentration which falls within any of the following categories: 1. A chemical that has a median lethal dose (LD50) of 50 milligrams or less per kilogram of body weight when administered orally to albino rats…...
Example of “Highly Toxic” and the fatal event (OSHA) Read More »
I used this humorous video to open my casual analysis training. Every parent has been there, but our kids’ curiosity is great. It’s how they LEARN. Sure, they may not understand all they are hearing (the same goes for adults in accident investigations), but that curiosity is what we need when leading a causal analysis…...
Safety Thought of the Week… be as inquisitive as a 5-year old Read More »
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Initial Explosion at Iranian Port (4/26/25) Read More »
At 11:05 a.m. on August 5, 2022, an employee, 59, was pressure testing a pressure vessel for leaks with compressed air when the air pressure became too high within the vessel. The lid of the vessel flew open and struck the employee in the arm, abdomen, chest, and head. The employee was taken to the…...
Leak Test Gone Bad Read More »
At 4:00 p.m. on April 14, 2023, an employee, 23, working for a structural sheet metal manufacturer, was performing hydrostatic testing on an air-conditioned heat exchanger. A plug failed under pressure, striking the employee. The employee was killed after being impaled in the chest by the plug…. Membership Required You must be a member to...
Pressure Test Gone Bad (air-cooled heat exchanger) Read More »
In 1981, workers at LANL were about to fill hydrogen (H2) cylinders from a large, H2-filled tube trailer. They used a manifold containing residual oxygen (O2), which was also connected to a tube trailer of O2 with only one valve separating these incompatible gases. When the mix ignited, the workers attempted to purge O2 from…...
Fatal Hydrogen Tube-Trailer Accident Read More »
A 25,000-gallon tank used to store nitrogen or carbon dioxide at 250 psig needed maintenance that required the removal of a four-foot diameter, 500 lb manhole cover. The tank was evacuated to 0 psig using the manually operated relief valve. Once the workers no longer heard air flowing through the valve, they released the stick…...
Zero equals Zero, not 0.27 psig Read More »
There are numerous units used to measure pressure…… Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...
Understanding common pressure units Read More »
A contractor boilermakerlost consciousness following the inhalation of nitrogen supplied through an air-line helmet respirator. Recommendations Source: https://www.rshq.qld.gov.au/safety-notices/mines/coal-mine-worker-loses-consciousness-following-the-inhalation-of-nitrogen-supplied-through-an-air-line-helmet-respirator… Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...
A contractor boilermaker loses consciousness (N2 with air-line helmet respirator) Read More »
Respondent operated a facility that utilizes anhydrous ammonia to provide cooling capabilities to processing, shipping, cooler areas, silos, and chillers for its beef and meat products. On March 30, 2022, EPA performed an inspection of the Facility to evaluate compliance with the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”) Section 103, EPCRA Sections 304-312,…...
EPA RMP & EPCRA Citations @ Food Plant (NH3 & $210K Read More »
