OSHA 30 Hour Construction Program Practice Test

Which action can lead to crane tip-over accidents?

1. Using proper signaling

2. Wind conditions affecting stability

3. Slow and careful movement

4. Routine safety checks

The correct answer is: Wind conditions affecting stability

The impact of wind conditions on crane stability is significant and can lead to crane tip-over accidents. Cranes are designed to operate within specific wind limits, and exceeding those limits can compromise their balance. When wind speeds become strong enough, especially on cranes with a high center of gravity or those with extended booms, the force exerted can lead to instability. Cranes may become top-heavy, and if the force of the wind is greater than the crane's ability to remain stable, it can tip over. As a result, understanding and monitoring environmental conditions, particularly wind, are critical components of safe crane operation. In contrast, actions such as proper signaling, slow and careful movement, and routine safety checks are essential practices that contribute to safe crane operation but do not directly increase the risk of tip-over incidents in the same way unfavorable wind conditions do. Proper signaling ensures that the crane operator is aware of their surroundings and can safely maneuver loads. Slow and careful movement helps reduce stress on the crane and allows for better control during operation. Routine safety checks are designed to ensure that the crane is in good working condition before use, minimizing the chances of mechanical failure.