Excavator Operator Certification Exam Prep · Question
An excavator operator is preparing to dig in a residential area. The 'Call Before You Dig' service has provided locates indicating several underground utilities. What colour would typically mark a natural gas line?
In Canada, the standard colour code for marking underground utilities indicates yellow for natural gas, oil, petroleum, and gaseous materials. Red is for electr
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Question: An excavator operator is preparing to dig in a residential area. The 'Call Before You Dig' service has provided locates indicating several underground utilities. What colour would typically mark a natural gas line?
Answer options:
- Red ✅ Yellow
- Blue
- Orange
Correct answer: Yellow
Explanation: In Canada, the standard colour code for marking underground utilities indicates yellow for natural gas, oil, petroleum, and gaseous materials. Red is for electrical power lines, blue for potable water, and orange for telecommunications.
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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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