A crane operator is positioning a mobile crane on a construction site. The ground conditions appear stable, but there is an unmarked drainage culvert running underneath the intended outrigger placement. What is the operator's primary responsibility according to OHS regulations?

Question: A crane operator is positioning a mobile crane on a construction site. The ground conditions appear stable, but there is an unmarked drainage culvert running underneath the intended outrigger placement. What is the operator's primary responsibility according to OHS regulations?

Answer options:

• Assume the ground can support the load if no visible signs of weakness are present.
• Relocate the crane to a different area without further investigation. ✅ Consult site-specific geotechnical information or a competent person to assess ground stability.
• Place extra blocking under the outriggers as a precautionary measure without further assessment.

Correct answer: Consult site-specific geotechnical information or a competent person to assess ground stability.

Explanation: Provincial OHS regulations dictate that a crane operator must ensure the ground can safely support the crane's weight and load. If there's an unknown underground structure like a culvert, the operator must consult site-specific geotechnical information or a competent person to assess ground stability before setting up to prevent a collapse. Assuming stability or using makeshift solutions without proper assessment is unacceptable.