What are the hand signals during crane operations?

What are the hand signals during crane operations?

There are three common boom signals: Raise boom: Extend an arm outward and point the thumb upward with a closed fist. Lower boom: Extend an arm outward and point the thumb downward with a closed fist. Swing boom: Extend an arm outward, pointing with an index finger in the direction the boom should swing.

What is the hand signal for boom up?

Raise boom – To raise the boom, a signal person will extend an arm horizontally to the side of their body and signal thumbs up, with a closed fist. Lower boom – In order to lower the boom the signal person will extend an arm horizontally and signal thumbs down, with a closed fist.

What type of hand signals should be used?

There are three main hand signals that every motorist and cyclist should become familiar with: Left turn, right turn, and slowing down/stopping. To indicate a left turn, extend your left arm out sideways with all your fingers extended.

What are the hand signals for lifting cargoes?

Use Whip Line (Auxiliary Hoist): Tap elbows with one hand; then use regular signals. Raise Boom: Arm extended, fingers closed, thumb pointing upward. Lower Boom: Arm extended, fingers closed, thumb pointing downward. Swing: Point with a finger in direction of swing of a boom.

How many crane signals are there?

There are three different signals for stop, Emergency Stop, Stop, and Dog Everything. When any of these signals are used the operator will halt the crane.

What is whip line for crane?

hoist. The secondary hoist is referred to as a “Whip Line”. See Rated Load Indicator. A device which aids the operator by automatically sensing the overturning moment on the crane, i.e. load X radius.

Who can give a stop or emergency stop signal?

Anyone who becomes aware of a safety problem must alert the operator or signal person by giving the stop or emergency stop signal. (Note: § 1926.1417(y) requires the operator to obey a stop or emergency stop signal).

What does a signal of three bells or flashes on a hoist indicate?

Signals when conveyance stops When persons are riding in a conveyance, and the shaft conveyance is brought to rest at the collar or at any working level or designated stopping place, and the brakes have been set, the hoist operator shall give the 3 bell hoist locked signal before the door of the conveyance is opened …

Where are crane operator hand signals found?

Crane operator hand signals Using standard hand signals is the most widely used manner of signaling a crane operator. A hand signal chart can usually be found on the side of the crane or it should be conspicuously posted in the vicinity of where hoisting operations are being conducted.

What is boom hoist?

Definition of boom hoist : a hoist having a spar projecting from the mast to support and guide the load : derrick.

When should the crane operator follow hand signals?

When should the crane operator follow hand signals? A crane operator should always move loads according to the established code of signals, and use a signaler. Hand signals are preferred and commonly used. A signaler may be required by law if the operator’s view of the intended path of travel is obstructed.

What is the standard method for signals to operator?

Signals to operators must be by hand, voice, audible, or new signals. When using hand signals, the Standard Method must be used.

How do you use the main hoist and whip line?

Use Main Hoist: Tap fists on head; then use regular signals. Use Whip Line (Auxiliary Hoist): Tap elbows with one hand; then use regular signals. Raise Boom: Arm extended, fingers closed, thumb pointing upward.

What does a signalman do?

Sometimes known as the signalman, this individual is responsible for signaling the crane and giving the operator orders that pertain to the lift. In order to accurately and safely direct crane operators, the signal person must know and understand the relevant signals used in regulations.