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Lines. Conductive objects could be wires, trans-formers, ducts, pipes or other equipment. Alwaystreat overhead lines as energized, even if they aredown or appear to be insulated. (Qualified powerline and communications workers and qualifiedline-clearance tree trimmers are trained to workcloser than 10 feet to a power line. See OSHA sTree Trimming Fact Sheet and Quick Card.)Never lose awareness of the overhead hazard. Struck-by, Crushed-by, or Caught-in HazardsEstablish and clearly mark a danger zone aroundthe aerial lift support vehicle. Never move theequipment with workers in the elevated plat-form unless the equipment has been specifical-ly designed for this type of operation. Do notallow workers to position themselves betweenoverhead hazards, such as joists and beams, andthe rails of the basket. If the basket moves, theworker(s) could become trapped and crushedbetween the rails and the overhead ProtectionDo not allow workers to belt off to an adjacentpole, structure or equipment while working froman aerial lift.

Using Aerial Lifts The major causes of injuries and fatalities involving aerial lifts are falls, electro-cutions, and collapses or tip-overs. Aerial devices include boom-supported aerial platforms, such as cherry pickers or bucket trucks, aerial ladders and vertical towers (OSHA regulates scissor lifts as mobile scaffolds, not as aerial devices).

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