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Heavy Equipment Operator Certification Exam Prep · Question

Which of the following is a critical safety precaution when refuelling heavy equipment on a job site?

According to fuelling safety standards, the engine must be shut off and allowed to cool to prevent ignition of fuel vapours during refuelling operations.

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Question: Which of the following is a critical safety precaution when refuelling heavy equipment on a job site?

Answer options: ✅ Ensure the engine is shut off and cooled down.

  • Keep the radio turned on for communication.
  • Refuel with the vehicle running to prevent sparks.
  • Smoke cigarettes to deter insects.

Correct answer: Ensure the engine is shut off and cooled down.

Explanation: According to fuelling safety standards, the engine must be shut off and allowed to cool to prevent ignition of fuel vapours during refuelling operations.

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