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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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