What is the purpose of zero energy verification before maintenance?

• A. To document the maintenance schedule.
• B. To ensure equipment cannot be energized and start unexpectedly.
• C. To test the equipment's performance after maintenance.
• D. To comply with data privacy rules.

Answer: (B)

Zero energy verification is a safety step that confirms there is no energy present in equipment before maintenance. After isolating the equipment from power sources, workers use a meter or test instrument to check for residual electrical energy and stored energy in components like capacitors, springs, or pressurized systems. Only after the test shows no energy is present do they proceed with the work. This ensures the equipment cannot be energized and start unexpectedly, protecting workers from shock, burns, or moving parts.

Documenting the maintenance schedule isn’t about preventing unexpected energization. Testing performance after maintenance happens once the work is done. Complying with data privacy rules isn’t related to energy or mechanical safety.