Heavy Equipment Operator Certification Exam Prep · Question
Before an authorized technician begins maintenance on the engine of a grader, what lockout/tagout procedure must be implemented?
Lockout/tagout (LOTO) procedures require that hazardous energy sources be isolated, locked, and tagged out to prevent accidental start-up or release of energy d
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Question: Before an authorized technician begins maintenance on the engine of a grader, what lockout/tagout procedure must be implemented?
Answer options: ✅ The machine's power source must be isolated and locked out, and a warning tag affixed.
- The technician must verbally confirm the engine is off.
- The operator must remain in the cab to prevent accidental start-up.
- Only the master switch needs to be turned off.
Correct answer: The machine's power source must be isolated and locked out, and a warning tag affixed.
Explanation: Lockout/tagout (LOTO) procedures require that hazardous energy sources be isolated, locked, and tagged out to prevent accidental start-up or release of energy during maintenance, protecting workers from serious injury, as per CSA Z460 and OHS regulations.
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