Excavator Operator Certification Exam Prep · Question
An excavator is operating near an existing trench supported by a shoring system. The operator notices significant displacement and bowing of the sheeting in one section of the shoring. What is the most appropriate immediate action?
Displacement or bowing of shoring indicates imminent failure. The only safe and correct action is to immediately remove all personnel, stop work, and report the
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Question: An excavator is operating near an existing trench supported by a shoring system. The operator notices significant displacement and bowing of the sheeting in one section of the shoring. What is the most appropriate immediate action?
Answer options:
- Continue excavation carefully, observing the shoring continuously.
- Increase the excavation rate to minimize the time spent near the compromised area. ✅ Cease all operations, immediately remove personnel from the trench, and report to the supervisor for shoring inspection.
- Attempt to stabilize the sheeting by backfilling against it with the excavator bucket.
Correct answer: Cease all operations, immediately remove personnel from the trench, and report to the supervisor for shoring inspection.
Explanation: Displacement or bowing of shoring indicates imminent failure. The only safe and correct action is to immediately remove all personnel, stop work, and report the hazard to a supervisor for a qualified person to assess the structural integrity.
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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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