__________ are warning devices that can be attached to energy isolating devices to indicate that the equipment to which they are fastened may not be operated until such time that the tagout device has been removed.

• A. Tagout devices
• B. Lockout devices
• C. Interlocks
• D. Fuses

Answer: (A)

In Lockout/Tagout programs, warning tags attached to energy isolating devices indicate that the equipment cannot be operated until the tag is removed. These tagout devices serve as the communication piece of the safety process, signaling that the energy source has been isolated and must not be operated until authorized personnel remove the tag. They are used to warn others and are often used alongside physical lockout devices for added protection. The other options describe things that either physically prevent operation (lockout devices), prevent machine starting by design (interlocks), or interrupt electricity (fuses), none of which are the warning tags described in the scenario.