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

What action should a crane operator take when encountering an unstable ground surface?

1. Proceed with caution and continue operations

2. Stop operations and reposition the crane

3. Increase load weight for stability

4. Reduce the number of line parts

The correct answer is: Stop operations and reposition the crane

When a crane operator encounters an unstable ground surface, the most appropriate action is to stop operations and reposition the crane. This is crucial because operating a crane on unstable ground can lead to tipping, loss of load control, and potential accidents that could result in injury or property damage. Ensuring the crane is set up on firm, level ground is paramount to maintaining stability and safety during operations. By stopping operations, the operator allows for a thorough assessment of the site conditions. If instability is noted, repositioning the crane to a more suitable location helps to mitigate risks associated with the ground's inability to adequately support the crane's weight and operation. This action aligns with safety protocols that prioritize the well-being of all personnel on site and safeguard equipment. The other choices don't prioritize safety and reliable operation in the same way. For instance, continuing operations on unstable ground could exacerbate the situation, and increasing load weight or reducing the number of line parts could compromise stability further, creating greater hazards.