14 psi can be “catastrophic” in a tanker truck

At 1:30 a.m. on December 6, 2024, a truck driver, 53, was unloading 40,000 pounds of salt from a dry bulk pneumatic trailer into salt brine tanks. The driver attached the truck’s power take-off to pressurize the trailer and connected the unloading hose to Salt Brine Tank #1. While standing near the pressure gauges on the driver’s side of the trailer, the dry bulk trailer suddenly exploded. Emergency responders found the driver unresponsive and declared him dead at the scene. The trailer was a 1998 Heil Super Flow Pneumatic Tanker with a capacity of 1,625 cubic feet, and the explosion occurred during pressure buildup estimated between 12 to 14 PSI.

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