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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 96932.015 - Two Employees Injured When Air Bag On Truck Trailer Ruptures

Accident: 96932.015 -- Report ID: 0751910 -- Event Date: 06/29/2017
InspectionOpen DateSICEstablishment Name
1245000.01507/05/2017Tony'S Tire Service, Inc.
On June 29, 2017, Employee #1 was trying to install an air bag onto the left rea r axle of a semi-truck trailer. A Wabash trailer had four air bags on the rear a xle. The rear two air bags needed to be replaced. Employee #1 went to a Pilot tr uck stop to service the vehicle. Employee #1 used jacks to hold the trailer up a nd removed the four rear tires. The two rear air bags were removed. Neither air bag had a legible marking to identify the model of make. Employee #1 took one of the air bags to a vehicle parts wholesale store for replacement air bags. The c lerk could not identify the proper model air bag. Employee #1 told clerk to matc h it up the best he could. A set of two replacement air bags with the same size and specs were provided; i.e., matching diameter, bolts, and spacing. Employee # 1 returned to the Pilot truck stop and installed the two new replacement air bag s. The tires were put back on the truck and the jack stands removed. Employee #1 told the driver to release the air brakes to fill up the rear axle air bags. Em ployee #1 started putting equipment away. The left rear air bag ruptured prior t o the driver leaving the parking lot. Employee #1 told the driver to drive the t ruck and trailer to his shop about half a mile away. Employee #1 and his shop ma nager, Employee #2 investigated the blown air bag. A replacement air bag matchin g the first two replacement air bags was obtained from the same parts store. Emp loyee #1 suspected a bad air bag. Employee #2 suspected the air bag may have bee n improperly installed and stayed to assist with replacing the blown left rear a ir bag. The jack stands were not used. Employees #1 & #2 allowed the truck and t railers' air system to inflate the three remaining air bags to hold the trailer up. This allowed Employee #1 to try installing the third replacement air bag on the left rear axle of the trailer. While attempting to install the air bag, the right rear air bag ruptured. Flying pieces hit Employee #2 resulting in deep bru ising, lacerations, and a broken finger. After the right rear bag ruptured the r ear of the trailer dropped in elevation pinching Employee #1's left four fingers between the air bag and trailer cross member. Employee #1 received broken bones in all four left hand fingers. Both employees were hospitalized and treated for their injuries.
Keywords: air pressure, caught in, contusion, crushed, finger, flying object, fracture, laceration, motor vehicle, rupture, struck by, tractor trailer
Employee # Inspection Age Sex Degree Nature Occupation
1 1245000.015 39 M Hospitalized injury Automobile mechanic apprentices
2 1245000.015 34 M Hospitalized injury Automobile mechanic apprentices

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