Company Name __________________________ Job Name __________________________ Date________
In a recent four-year review of work-related crane fatalities, 312 people died and only 30 of these were crane operators. The other unfortunate people were working on or near the crane-laborers, riggers, welders, iron workers, carpenters or truck drivers. 72 people, or 23%, died when the crane contacted an energized overhead power line. Guiding the load, walking the load in a pick-and-carry operation, or contacting the wire rope when the crane touched the power line were the most common ways electricity found a path to a worker.
Overhead power lines kill! For this reason everyone in proximity to a crane, when energized lines are near, must stay alert. It takes employee teamwork to successfully and safely operate under this combination of conditions.
Power lines can be hard for the crane operator to see. They sometimes appear to be either further away or much closer than they really are. It is difficult for the human eye to accurately judge the clearance between the crane's boom or line, and a power line. Fellow workers can help assure that safe clearances are being maintained between the crane, the line, the load and the overhead power line. The table below shows basic clearance minimums, which apply to all areas around the power line-above, below or to either side:
|Power Line Voltage||Minimum Clearance|
|up to 50k||10 feet|
|50k to 75k||11 feet|
|75k to 125k||13 feet|
|125k to 175k||15 feet|
|175k to 250k||17 feet|
|250k to 370k||21 feet|
|370k to 550k||27 feet|
|550k to 1,000k||42 feet|
What can you do to help ensure safe operations around energized power lines?
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