Overhead Crane Practice Test

What is considered a sign that a crane should be taken out of service?

1. Normal wear on components

2. Visible rust on chains

3. One broken wire in the rope

4. Multiple defects present

The correct answer is: Multiple defects present

Taking a crane out of service is essential for maintaining safety and operational integrity. The presence of multiple defects signifies that the crane is not functioning optimally and could be a risk to both the operator and the load being handled. Multiple defects indicate a broader issue with the equipment's reliability and structural integrity, suggesting it may not be safe for continued use. In comparison, normal wear on components may be expected in regular operational contexts; it doesn't necessarily mean immediate removal from service unless it reaches a critical state. Visible rust on chains can be concerning, but it does not always render the crane inoperable—it might merely require maintenance or replacement. Similarly, one broken wire in the rope is serious and should be addressed, but it may not be sufficient alone to warrant taking the crane out of service if the rest of the rope is in good condition. In contrast, multiple defects indicate a systemic issue that poses immediate safety risks.