Scaffolds Near Overhead Power Lines

WARNING! Workers may be electrocuted when erecting, moving, or working from metal or conductive scaffolds near overhad power lines.

Take the following actions to protect yourself if you are erecting, moving, or working from metal or conductive scaffolds near overhead power lines.

• Be aware of overhead power lines in your work area. Most overhead power lines are not insulated.
  
• Conduct initial and daily surveys of the worksite and implement control measures and training to address hazards at the site.
  
• Recognize the hazards of moving, erecting, or working from scaffolds near overhead power lines.
  
• Restrict the use of electrically conductive tools or materials where they may contact overhead power lines.
  
• Be trained in cardiopulmonary resuscitation (CPR).
  
• always maintain the following minimum clearance between scaffolds and power lines:

  2 feet for insulated power lines of less than 300 volts.
  

  10 feet for insulated power lines of 300 volts or more and for all uninsulated power lines

• If scaffolds must be moved in the area of overhead power lines, appoint a competent worker to observe the clearance between the power lines and the scaffold and warn others if the minimum is not maintained.
  
• If minimum clearance cannot be maintained when scaffolds must be erected or moved near overhead power lines, notify the utility company to de-energize the power lines or provided adequate insulation before any work is initiated.

For additional information, refer to the NIOSH Alert on Scaffolds Near Overhead Power Lines [DHHS (NIOSH) 91-110], or call 1-800-35-NIOSH. Single copies are available free from the following: