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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14515829 - Fall - Collapse Of Power Transmission Tower

Accident: 14515829 -- Report ID: 0420600 -- Event Date: 07/24/1984
InspectionOpen DateSICEstablishment Name
123291707/25/19841623Richards & Associates Inc
Two power line crews were placing insulators on six transmission towers for a 500-kilovolt overhead power line. The towers were 116 feet in height and were placed at 50-foot intervals, running east to west. Each tower was intended to hold a separate line running north to south. An aerial lift with a 90-foot articulated boom was used to place a power line worker on the fourth tower from the west. After placing the power line worker at a 100-foot height on the tower, the driver lowered and cradled the boom, retracted the outriggers, and drove the truck to the west. When the driver made a 180-degree turn around the western-most tower, the retracted boom struck and severed the tower's western guy. The loss of the guy caused the tower to collapse in an easterly direction and triggered a chain reaction. The lineman died when the tower on which he was working fell and crushed him.
Keywords: collapse, power line worker, crushed, guy, elec utility work, fall, transmission tower, aerial lift
Employee # Inspection Age Sex Degree Nature Occupation
1 1232917 Fatality Fracture Electrical power installers and repairers

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