Under what condition should a red tag be placed on equipment?

The placement of a red tag on equipment indicates that there are impairments that make the equipment unsafe or inoperable. This serves as a critical safety measure ensuring that anyone interacting with the equipment is aware of its hazardous condition. A red tag effectively communicates that the equipment should not be used until the issues have been resolved, preventing potential accidents or injuries.

In contrast, labeling equipment as functioning normally, undergoing routine maintenance, or being upgraded does not warrant a red tag. These situations typically do not present any safety concerns that require urgent attention or restrictions on the use of the equipment. Therefore, the use of a red tag is specifically reserved for instances where safety is compromised.