Which item listed for cranes with more than one hoisting unit is not required according to the material?

Which item listed for cranes with more than one hoisting unit is not required according to the material?

• A. Its own daily inspection log on each hoist
• B. Its rated load marked on it
• C. A wind-indicating device
• D. Automatic rail clamps

Answer: (C)

For cranes with more than one hoisting unit, each hoist needs its own daily inspection log to track condition and maintenance, ensuring any issue is caught before use. The hoist also must have its rated load clearly marked so the operator knows the safe lifting limit and avoids overloading. Automatic rail clamps are used to secure the trolley to the rail when needed, adding stability and preventing unwanted movement during setup, maintenance, or out-of-service periods. A wind-indicating device, while potentially useful in some outdoor scenarios, is not required by the material for cranes with multiple hoisting units, so it isn’t a mandatory item in this context.

For cranes with more than one hoisting unit, each hoist needs its own daily inspection log to track condition and maintenance, ensuring any issue is caught before use. The hoist also must have its rated load clearly marked so the operator knows the safe lifting limit and avoids overloading. Automatic rail clamps are used to secure the trolley to the rail when needed, adding stability and preventing unwanted movement during setup, maintenance, or out-of-service periods. A wind-indicating device, while potentially useful in some outdoor scenarios, is not required by the material for cranes with multiple hoisting units, so it isn’t a mandatory item in this context.