Excavator Operator Certification Exam Prep · Question
What is the primary method for protecting workers from falling into an open excavation that is not otherwise protected by barriers or fences?
Guardrails or physical barriers are the primary and most effective engineering control to prevent personnel from falling into excavations, especially at night o
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Question: What is the primary method for protecting workers from falling into an open excavation that is not otherwise protected by barriers or fences?
Answer options:
- Providing adequate lighting around the excavation during darkness. ✅ Installing guardrails or physical barriers around the perimeter.
- Having a spotter constantly monitor the edge of the excavation.
- Relying on workers to maintain a safe distance voluntarily.
Correct answer: Installing guardrails or physical barriers around the perimeter.
Explanation: Guardrails or physical barriers are the primary and most effective engineering control to prevent personnel from falling into excavations, especially at night or when work is not actively underway, as required by regulations like WorkSafeBC G20.93 and Ontario Reg 213/91 (s. 232).
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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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