What is the purpose of an out-of-service tag?

• A. To indicate that the crane or a component is unsafe and must not be operated until repaired.
• B. To indicate the crane is ready for use.
• C. To mark the next maintenance date.
• D. To identify the operator.

Answer: (A)

An out-of-service tag signals that a crane or a component cannot be used because it is unsafe or defective. It serves as a clear warning to everyone that operation is prohibited until a qualified person has inspected and repaired the item and confirmed it’s safe to operate. The tag should be placed in a conspicuous spot on the crane and stay there until the issue is resolved, preventing accidental startup or use.

This isn’t about showing that the crane is ready for use, marking a maintenance date, or identifying the operator. Those functions are handled by other signals or records. The key purpose here is safety: to stop work on a potentially dangerous piece of equipment until it’s repaired and verified safe.