What type of tag is used to notify personnel of uncertain equipment status?

The appropriate tag used to notify personnel of uncertain equipment status is the warning tag. Warning tags are critical safety devices that communicate that equipment may not be in a safe or operational condition, and as such, personnel should exercise caution when working in the vicinity of the tagged equipment.

In this context, the warning tag serves as an indication that additional inspection or evaluation may be necessary before using the equipment or proceeding with operations. It provides a precautionary measure to protect workers from potential hazards associated with equipment that may not be functioning properly or whose operational state is unclear.

The out of service tag typically indicates that equipment is not available for use due to maintenance or repair; it suggests a definite status rather than uncertainty. The danger tag is used to indicate an immediate hazard that could result in severe injury or death, highlighting a more urgent situation compared to the caution advised by a warning tag. Unauthorized access tags prevent individuals from entering restricted areas, which does not address uncertain equipment status directly.