Alert 12 – 27 Hidden Welding Lead Results in Minor Electrical Shock


Two scaffold builders were assembling a covered scaffold inside a boiler while concurrent welding and blasting activities were taking place. Scaffold builder “A” used his hammer to line up an angle support and unknowingly contacted a welding cable which was hidden below the scaffold post rosette. The scaffold post contacted the exposed wire which resulted in an electrical arc to travel up the post to a scaffold support brace which was being held above by scaffold builder “B”. Scaffold builder “B” received an electrical jolt from the current traveling through the brace.

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