National Commission for the Certification of Crane Operators (NCCCO) Mobile Crane Practice Exam

When should tag lines be used during crane operations?

1. When the load is stable

2. When a load is being lifted

3. When the rotation of the load becomes hazardous

4. When moving the crane

The correct answer is: When the rotation of the load becomes hazardous

Tag lines are an important safety measure in crane operations, particularly in scenarios where the load's movement can become unpredictable or hazardous. These ropes are used to control the orientation and stability of a load during lifting and placement. In situations where the rotation of a load poses a risk, using tag lines helps the operator or signal person guide it safely, minimizing the chance of the load swinging uncontrollably or encountering obstacles. This practice is vital for maintaining a safe working environment, especially when dealing with loads that may not be stable or are prone to sudden movement. While tag lines can be beneficial in other scenarios, their primary function during crane operations is to help manage potentially dangerous situations, particularly when the load is rotating in a way that can cause hazards. This highlights the critical role that tag lines play in enhancing safety and control during hoisting tasks.