Hazardous Materials

More exemptions for Flammable Refrigerants

A few years ago, I warned about the huge push to make flammable refrigerants easier to manage in the name of “global warming.” As a safety professional, this shift is alarming. Never in my career have we considered a burning rate of 10 cm/s as a means to lessen the risk associated with a flammable…...

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Eight (8) workers die inside refrigerated truck with “dry ice” (China)

The report indicated that the driver of the refrigerated truck had poor safety and legal awareness. He allowed eight female workers to ride in the truck, which carried packaged beef with dry ice. The dry ice sublimed into carbon dioxide gas, which rapidly filled the confined space inside the truck…. Membership Required You must be...

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2024 IFC incorporates the new GHS Flammable Gas Categories (1A and 1B)

The day has arrived! The 2024 IFC recognizes the new GHS for Flammable Gases by breaking down CAT 1 Flammable Gases into 1A and 1B Flammable Gases. it also uses the phrase “Burning Velocity” (BV) which are defined and quantified as…… Membership Required You must be a member to access this content.View Membership LevelsAlready a...

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Flammable Gases & Flammable Cryogenic Fluids Emergency Shut-Off Requirements

As we have discussed, the Chemical Safety Board (CSB) issued a Safety Study (CSB Safety Study: No. 2024-01-H, Remote Isolation of Process Equipment) discussing the untapped advantages when Remote Emergency Shut-Off Valves are used in hazardous processing.  I have written about these requirements for all types of hazardous materials; this post is for Flammable Gases…...

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The importance of Calibrating and Bump-Testing our monitors (H2S)

Those who follow my accident posts are well aware of my crusade to help everyone understand the LIMITATIONS of our atmospheric monitors. Just this year, I did my 2-day PRCS training course for a well-known petrochemical business and was challenged on the limitations of the LEL sensors on these devices. During the lunch break, several…...

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When you see it… Bollards and Gas Meter

As many of you know, I have a love of bollards. This love has come over many years and many accidents where I have seen them protect a critical asset and PREVENT a serious event. This is a new county building built near my home, and when I drove by, I had to take a…...

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Personal gas meter, its placement, and our “breathing zone”Ha

If we spend enough time in chemical plants, we will encounter a widespread, albeit severe, human failure regarding a “safety-critical instrument.”  I am referring to the IMPROPER placement of personal gas monitors.  Nine times out of 10, where do we find these personal gas monitors on the worker’s body?  I am betting your experiences are…...

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Excess Flow Valves in your home’s gas line (49 CFR Part 192)

Following the investigation of a natural gas explosion in Loudon County, Virginia, in 1998, the National Transportation Safety Board (NTSB) recommended (Recommendation P-01-002) that PHMSA require that excess flow valves be installed in all new and renewed gas service lines, regardless of a customer’s classification, when the operating conditions are compatible with readily available valves…....

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Cincinnati Styrene RCar event (Simplified Explanation)

The simple explanation of what is happening… Styrene (Stabilized) is shipped with an “inhibitor.” This inhibitor is TIME and TEMPERATURE dependent. Should the inhibitor expire and/or the solution exceed its safe temperature, the inhibitor weakens, and the Styrene will begin to polymerize (chemical reaction), which is an EXOTHERMIC reaction with “run-away” potential. This means the…...

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Contaminated/flammable refrigerant is suspected in refrigerated container explosions

According to reports, thirteen (13) explosions, three (3) of which involved fatalities, occurred over the past ten (10) years, leading to the grounding of hundreds of refrigerated containers worldwide. The causes of the explosions were investigated and thought to have been caused by contaminated or incorrect refrigerant being added to the refrigeration system while it…...

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Fatal Reffer Explosion in GA (Updates)

It has been 1-month since the tragic death of Greene County Fire Rescue Battalion Chief Chris Eddy in GA while working a semi-truck fire on the side of the roadway. We still have not received any formal information on this event, but there has been some erroneous reporting.  Out of respect for Mr. Eddy, I…...

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Fatal Welding Accident – Tanker

1910.252(a)(3)(i) Used containers. No welding, cutting, or other hot work shall be performed on used drums, barrels, tanks or other containers until they have been cleaned so thoroughly as to make absolutely certain that there are no flammable materials present or any substances such as greases, tars, acids, or other materials which when subjected to…...

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