Heavy Equipment Operator Certification Exam Prep · Question
Why is it essential to de-energize and block or dissipate stored potential energy within heavy equipment components before maintenance?
Stored energy, such as hydraulic pressure in cylinders or tension in springs, must be bled down, blocked, or dissipated to zero energy state to prevent unexpect
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Question: Why is it essential to de-energize and block or dissipate stored potential energy within heavy equipment components before maintenance?
Answer options: ✅ To prevent unexpected movement or injury from sudden release of that energy.
- To reduce the overall weight of the equipment for easier handling.
- To save energy consumption during the lockout period.
- To make sure the equipment cools down faster after operation.
Correct answer: To prevent unexpected movement or injury from sudden release of that energy.
Explanation: Stored energy, such as hydraulic pressure in cylinders or tension in springs, must be bled down, blocked, or dissipated to zero energy state to prevent unexpected movement or injury, a critical step in LOTO as mandated by Ontario Reg. 851, Sections 76-78.
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