Heavy Equipment Operator Certification Exam Prep · Question
When refuelling a large diesel-powered dozer on a job site, what is the most critical safety precaution to observe?
The most critical safety precaution during refuelling is to eliminate ignition sources, such as smoking and open flames, due to the flammability of fuels and va
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Question: When refuelling a large diesel-powered dozer on a job site, what is the most critical safety precaution to observe?
Answer options:
- Ensuring the engine is running to prevent fuel line airlocks.
- Using a high-pressure pump to fill the tank quickly. ✅ Prohibiting smoking and open flames within the refuelling area.
- Refuelling during the operator's lunch break only.
Correct answer: Prohibiting smoking and open flames within the refuelling area.
Explanation: The most critical safety precaution during refuelling is to eliminate ignition sources, such as smoking and open flames, due to the flammability of fuels and vapours, as required by OHS safety practices.
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