Can a tag alone indicate a safe condition for maintenance?

A tag alone cannot indicate a safe condition for maintenance because tags serve merely as a warning sign explaining that a piece of equipment is being serviced or maintained and should not be operated. Tags do not provide a physical means of preventing operation; therefore, they do not ensure that the equipment is indeed isolated from all energy sources.

When used in conjunction with a lockout device, a tag provides a visual indication of the lockout status. This combination of a lockout device and a tag creates a more reliable and effective lockout/tagout system. The lockout device physically prevents the operation of the equipment, while the tag conveys important information about the work being done and alerts others to avoid attempting to operate the equipment. Thus, relying solely on a tag, without the locking mechanism, fails to ensure safety during maintenance activities.