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When is a signal person required?
What makes a signal person qualified?
You can use any hand signals that you want, as long as everyone agrees on the signals to be used ahead of time.
The crane operator’s reception of signals does not have to be hands free.
The device(s) used to transmit signals must be tested on site before beginning operations to ensure that the signal transmission is effective, clear, and reliable.
The different types of hand signals are:
The number of signal persons that should be signaling a lift.
Each voice signal must contain the following three elements, given in the following order: function (such as hoist, boom, etc.), direction; distance and/or speed; function, stop command.
The moving of a crane can be signaled audibly as follows.
Cranes can be operated in wind speeds of:
When a lightening strike or thunder occur, all lifting operations must stop for 30 minutes.
If the crane operator looses sight of the signal person, they should continue to move in the same direction as the signal person was using last.
The crane should maintain a minimum distance of 10 feet for a powerline up to 50, volts.
Crane limitations that are listed on the load chart are:
A double wrap choker hitch better secures a load, than a basket hitch.
The crane signal for stop is demonstrated by …
The crane signal for hoist the load is:
The crane signal for use the main hoist is:
The crane signal for travel forward is:
The crane signal of stop or emergency stop can be signaled by anyone.