What is the purpose of lockout/tagout (LOTO) in LPWS?

• A. To isolate energy sources during maintenance to prevent unexpected startup or release of energy.
• B. To ensure safe operation by auditing energy usage after maintenance.
• C. To document maintenance activities for compliance.
• D. To train staff on energy management during shift handovers.

Answer: (B)

Lockout/tagout is all about controlling hazardous energy during maintenance. The essential goal is to physically isolate energy sources so the equipment cannot start up or release stored energy while someone is working on it. This is typically done by applying a lock to the energy-release device, which prevents re-energizing until the lock is removed by the person who applied it. When locking isn’t possible, a tag may be used to warn others not to operate the equipment, but tags rely on that warning being followed and are not as secure as a lock. So the primary purpose is to prevent unexpected energization or energy release during servicing, ensuring the worker stays safe.