OSHA Accident Investigation · Summary #894535
CHOCK,HEAD,REPAIR,UNSECURED,WORK RULES,FALL,AERIAL LIFT
Event description
Employee killed in fall from mobile ladder stand
Investigation abstract
At approximately 10:20 a.m. on December 1, 1988, Employee #1 and a coworker were he went out to park another piece of equipment. The coworker stated that before he left he saw Employee #1 with a hand winch. Employee #1 had removed the wear p ad on the inside of the boom but due to the height of the boom had encountered d ifficulty in shifting it so that he could remove the other wear pad. He had appa rently climbed up the northwest mobile ladder stand to shift the boom and free t he wear pad when the ladder stands began to move. This caused the aerial lift ba sket to fall 8 ft to the concrete floor, which in turn caused Employee #1 to fal l backward off the mobile ladder stand and drop approximately 4 ft to the floor. A coworker found the employee with his right leg wedged between the fourth and fifth steps of the mobile ladder stand, and his head resting on the floor. Emplo removing the wear pads from the boom of a Grove aerial lift so that the boom se yee #1 died at approximately 2:40 p.m. that afternoon from head injuries. ction could be removed and a hydraulic leak repaired. The 570 lb boom section wa s approximately 7 ft off the floor. The aerial lift basket had been completely d isconnected from the end of the aerial lift boom and was resting on two Economy Hijacker mobile ladder stands that were approximately 8 ft above the floor. The casters on the ladder stands had not been locked nor were they chocked to preven t movement. The coworker who had helped Employee #1 remove the two top wear pads then told him to remove the remaining two pads at the bottom of the boom while
Victim
-
#1 Fatality Age 56 M
- Nature of injury
- 6
- Part of body
- 13
- Event type
- 5
- Source
- 42
- Occupation code
- 516
- Human factor
- 18
- Environmental factor
- 13
- Task assigned
- 1
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