Excavator Operator Certification Exam Prep · Question
A trench is being excavated near a gas pipeline marked with yellow flags. According to best practices and provincial regulations, what is the minimum safe hand-digging clearance zone around the marked pipeline once its location is confirmed?
Provincial regulations (e.g., Ont. Reg. 213/91, S. 200(3)) often specify a minimum 0.3-metre hand-digging tolerance zone on either side of a marked utility. Mec
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Question: A trench is being excavated near a gas pipeline marked with yellow flags. According to best practices and provincial regulations, what is the minimum safe hand-digging clearance zone around the marked pipeline once its location is confirmed?
Answer options: ✅ 0.3 metres (30 cm)
- 0.5 metres (50 cm)
- 1.0 metres (100 cm)
- 1.5 metres (150 cm)
Correct answer: 0.3 metres (30 cm)
Explanation: Provincial regulations (e.g., Ont. Reg. 213/91, S. 200(3)) often specify a minimum 0.3-metre hand-digging tolerance zone on either side of a marked utility. Mechanical excavation is strictly prohibited within this zone.
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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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