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When is it safe to handle loads under power lines? -
ANSWER-The load nor any part of the crane can come
closer than regulations allow
if a crane comes in contact with power lines, it is critical
that everyone be kept away from the crane, the load line,
and the load because - ANSWER-All three can become
energized including the ground around the crane and you
could be electrocuted by just getting too close to any of
them
, If a crane only momentarily contacts a power line of 6,000
volts; - ANSWER-The crane should be stopped and
inspected immediately to determine the path of electricity
because wire rope,seals,bearings,wiring,tires,etc. can
become damaged.
The minimum clearances allowable between power lines
and any part of the crane vary depending on the voltage of
the lines.what are minimum clearances required by osha
for power lines above 50,000 volts? - ANSWER-10 feet
plus 0.4 inch per 1,000 volts above 50,000 kv
Electrocution is the number one cause of fatalities
associated with with cranes. Does the boom load line or