Which practice helps prevent accidental starting of equipment during service?

• A. Wearing gloves.
• B. Lockout/tagout procedures.
• C. Parking brake engagement.
• D. Checking coolant level.

Answer: (B)

The practice being tested is preventing accidental startup by isolating and securing all energy sources during service. Lockout/tagout procedures require you to de-energize the equipment, physically isolate each energy source, and apply a lock and a tag so the machine cannot be restarted until the lock is removed by the person who applied it. This creates a clear, verifiable barrier to inadvertent startup and protects workers from injuries that can occur if moving parts or pressurized systems energize unexpectedly. Wearing gloves protects hands but doesn’t stop the equipment from being energized. Parking the brake helps keep a vehicle from moving, but it doesn’t isolate electrical, hydraulic, or other energy sources. Checking coolant level is routine maintenance and does not address energy isolation or accidental startup.