Excavator Operator Certification Exam Prep · Question
A trench box is being lifted into place by an excavator. Who is responsible for ensuring the rigging and lifting procedures comply with safety standards?
Both the excavator operator, who has immediate control of the lift, and the competent person supervising the overall excavation and lifting plan, are responsibl
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Question: A trench box is being lifted into place by an excavator. Who is responsible for ensuring the rigging and lifting procedures comply with safety standards?
Answer options:
- Only the excavator operator, as they are operating the machine.
- The on-site safety officer only. ✅ The competent person responsible for the excavation and the operator, ensuring load limits and procedures are followed.
- The manufacturer of the trench box, as per their instructions.
Correct answer: The competent person responsible for the excavation and the operator, ensuring load limits and procedures are followed.
Explanation: Both the excavator operator, who has immediate control of the lift, and the competent person supervising the overall excavation and lifting plan, are responsible for ensuring safe rigging and lifting procedures in accordance with OHS regulations (e.g., OHSA Section 25(2)(a), CSA Z248-16).
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Question explanations
- During a final inspection of an excavator, prior to beginning work, an operator notices significant play in th
- An excavator operator is preparing to dig a trench in cohesive soil. To achieve maximum breakout force, what a
- Which control typically governs the arm (or dipper arm) movement for an excavator?
- What condition might require sloping or shoring of a trench less than 1.2 meters (4 feet) deep?
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