What does Red color indicate in the alarm color coding?

What does Red color indicate in the alarm color coding?

• A. Yellow - Access Pending
• B. Green - Secure Pending
• C. Blue - Trouble or Failure
• D. Red - Unacknowledged or Acknowledged Alarm supervisory condition

Answer: (D)

Red is used to draw immediate attention to an alarm. It marks an active alarm state that needs action. In this coding scheme, red covers both when the alarm is unacknowledged (just triggered) and when it has been acknowledged but the condition still remains as an alarm supervisory state until it is cleared. The goal is to cue the operator to respond quickly, since red signals the most urgent situation. By comparison, yellow typically indicates pending or watchful conditions, green shows normal/secure status, and blue points to trouble or failure that is less urgent than an active alarm.

Red is used to draw immediate attention to an alarm. It marks an active alarm state that needs action. In this coding scheme, red covers both when the alarm is unacknowledged (just triggered) and when it has been acknowledged but the condition still remains as an alarm supervisory state until it is cleared. The goal is to cue the operator to respond quickly, since red signals the most urgent situation. By comparison, yellow typically indicates pending or watchful conditions, green shows normal/secure status, and blue points to trouble or failure that is less urgent than an active alarm.