Which signal would you see to indicate trolley movement?

Study for the Rigging Practices Test. Prepare with detailed quizzes and practice questions, with hints and explanations for each query. Equip yourself with vital rigging knowledge and ace your exam!

Multiple Choice

Which signal would you see to indicate trolley movement?

Explanation:
In overhead crane signaling, different signals control different parts of the system. The trolley is the carriage that moves along the bridge, carrying the hoist. Signals labeled for trolley movement are the ones that instruct the trolley to move along the bridge, separate from signals that move the bridge along the runway (travel) or lift/lower the load (hoist). An emergency stop halts all motion, not just the trolley. So, when you want the trolley to move, you look for the signal specifically designated for the trolley. The others control the bridge’s travel or the hoist operation, or stop everything, so they don’t indicate trolley movement.

In overhead crane signaling, different signals control different parts of the system. The trolley is the carriage that moves along the bridge, carrying the hoist. Signals labeled for trolley movement are the ones that instruct the trolley to move along the bridge, separate from signals that move the bridge along the runway (travel) or lift/lower the load (hoist). An emergency stop halts all motion, not just the trolley.

So, when you want the trolley to move, you look for the signal specifically designated for the trolley. The others control the bridge’s travel or the hoist operation, or stop everything, so they don’t indicate trolley movement.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy