What color is an OOC tag?

What color is an OOC tag?

• A. Blue
• B. Red
• C. Yellow
• D. Green

Answer: (B)

The idea behind this question is how color coding communicates equipment status for safety. An OOC tag indicates the equipment is out of service and must not be operated until it’s inspected or repaired. Red is the color used to signal danger and prohibition—“do not operate.” That immediate, unmistakable signal is why red is the correct choice. The other colors carry different meanings: blue often denotes information or specific instructions, yellow warns of potential hazards, and green usually means the equipment is safe or ready to use. So red best communicates the urgent “do not use” status of an OOC tag.

The idea behind this question is how color coding communicates equipment status for safety. An OOC tag indicates the equipment is out of service and must not be operated until it’s inspected or repaired. Red is the color used to signal danger and prohibition—“do not operate.” That immediate, unmistakable signal is why red is the correct choice. The other colors carry different meanings: blue often denotes information or specific instructions, yellow warns of potential hazards, and green usually means the equipment is safe or ready to use. So red best communicates the urgent “do not use” status of an OOC tag.