Case Reports from OSHA files
- An employee was arc welding from a suspended scaffold. The work lead on the welder had frayed insulation in one
place, and the bare conductor was exposed. The frayed section of welding cable was tied around the metal
guardrail of the scaffold. Since the scaffold was not grounded, it became energized. This caused arcing between
the scaffold and the building. The welding current passed through the wire rope supporting the scaffold, and the
wire rope separated. The employee and the scaffold fell 50 feet to the ground. The employee was hospitalized for
his injuries.
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