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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 170894547 - Employee Injured In Fall When Crane Overturns

Accident: 170894547 -- Report ID: 0950652 -- Event Date: 09/19/1996
InspectionOpen DateSICEstablishment Name
11990471209/19/19961629Tutor-Saliba-Perini B241
Employee #1 was operating a 40-ton P & H Omega hydraulic rough terrain crane that had been rated to a 25-ton capacity. The crane was staged on a deck that covered an excavation, and it was hoisting a 21-ton Komatsu D66S tracked bucket loader through an opening in the deck. Employee #1 received a signal to stop the load and then to swing it to the left. As the load moved left, it struck a horizontally-mounted, ground support tubular strut, causing the bucket loader to stop moving even as the crane's boom continued swinging to the left. This resulted in a side-loading condition that caused the crane to become unbalanced and overloaded. As the crane began to tip over in a forward direction, the boom tip became lodged in the top of the engine housing of the Komatsu loader. Employee #1 jumped from the cab, striking the heels of his feet and his lower back against the beam of the left outrigger. He sustained fractures in both feet and a fracture of the #15 lumbar vertebra.
Keywords: fracture, overloaded, struck against, construction, fall, vertebra, crane, foot, overturn, unstable position
Employee # Inspection Age Sex Degree Nature Occupation
1 119904712 Hospitalized injury Fracture Crane and tower operators

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