What term describes a procedure that ensures energy sources are properly isolated before maintenance?

What term describes a procedure that ensures energy sources are properly isolated before maintenance?

• A. Grounding
• B. Bonding
• C. Lockout
• D. Voltage

Answer: (C)

Lockout is the procedure used to ensure energy sources are isolated and cannot be re-energized while maintenance or repair work is done. It involves de-energizing the equipment, then locking the energy-control device (like a switch or breaker) in the off position and placing a tag to identify who is responsible. This combination prevents accidental startup and protects workers. Grounding and bonding serve different safety purposes. Grounding provides a path for fault current to earth, and bonding equalizes potential between conductive parts to prevent shock, but neither by itself ensures the equipment is isolated from its energy sources. Voltage is simply the electrical potential difference, not a safety isolation procedure.

Lockout is the procedure used to ensure energy sources are isolated and cannot be re-energized while maintenance or repair work is done. It involves de-energizing the equipment, then locking the energy-control device (like a switch or breaker) in the off position and placing a tag to identify who is responsible. This combination prevents accidental startup and protects workers.

Grounding and bonding serve different safety purposes. Grounding provides a path for fault current to earth, and bonding equalizes potential between conductive parts to prevent shock, but neither by itself ensures the equipment is isolated from its energy sources. Voltage is simply the electrical potential difference, not a safety isolation procedure.