Which of the following is a correct lockout/tagout safety procedure?

Choosing to lock the device or power source is a fundamental aspect of lockout/tagout safety procedures designed to prevent the accidental start-up of machinery or the release of hazardous energy during maintenance or servicing. This practice ensures that a piece of equipment cannot be operated until the lock is removed, which is critical for safeguarding the safety of workers on the job site.

Locking the device serves as a physical barrier to operation, effectively communicating that maintenance is underway and that no one should attempt to use the device. This process typically involves using a lock and a tag that identifies the person responsible for the lockout, which adds an additional layer of safety by providing a visual warning to others.

In contrast, leaving a device unattended without proper lockout procedures can lead to serious accidents, as others may inadvertently operate it. Relying solely on tape to mark a device does not provide the same level of security or communication as a lock and is therefore not considered a reliable lockout/tagout procedure. Simply notifying co-workers verbally is insufficient since it lacks the visual and physical protections that locking devices in place affords.