What is the primary purpose of Lockout/Tagout procedures?

• A. To label the device for identification
• B. To ensure continuous operation
• C. To improve energy efficiency
• D. To prevent re-energization while maintenance is performed

Answer: (D)

The core idea is controlling hazardous energy so equipment cannot start or release stored energy while someone is working on it. Lockout/Tagout is about preventing re-energization during maintenance. A lock physically prevents the energy source from being re-energized, while a tag gives a warning and identifies who placed the control and why. Before any service, all energy sources are isolated, stored energy is secured or dissipated, and a verification step confirms zero energy. The person who applies the lock is the one who removes it, ensuring accountability and worker protection. This focus on stopping unintended startup isn’t about labeling, maintaining continuous operation, or boosting energy efficiency.