When is the signal “Retract” used in crane operations?

The signal “Retract” is specifically used to instruct the crane operator to retract the boom or jib. This involves moving the boom or jib closer to the crane, which is typically necessary for various reasons, such as positioning the crane for a more stable load or clearing obstacles. The act of retraction helps in controlling the reach and angle of the boom, ensuring safe operation during lifting and maneuvering.

Understanding the function of this signal is crucial for safe crane operations, as it reflects a clear communication between the signal person and the operator regarding the movement required. Properly using this signal helps in preventing accidents and enhancing efficiency when working with heavy loads.

The other options pertain to different maneuvers that are not associated with retracting the boom or jib. For instance, lifting a load or lowering the boom involves different signals and actions tailored to those specific operations. Therefore, recognizing the unique command associated with “Retract” reinforces the importance of precise communication in crane safety.