What does Red Flashing indicate?

• A. The most recent measurement of refrigerant concentration from one or more of the SAMMs has exceeded the warning level
• B. The most recent measurement of refrigerant concentration from one or more of the SAMMs has exceeded the alarm level
• C. The most recent measurement of refrigerant concentration from one or more of the SAMMs has exceeded the alert level
• D. The most recent measurement of refrigerant concentration from one or more of the SAMMs has exceeded the critical level

Answer: (D)

Red flashing signals the most severe status: the most recent refrigerant concentration measurement from one or more SAMMs has exceeded the critical level. This is the highest level of urgency, so immediate action per safety procedures is required. When the critical level is reached, you’d typically follow the emergency response plan, which often includes steps like increasing ventilation, evacuating nonessential personnel, and notifying supervisors or safety personnel. The other levels—warning, alarm, and alert—indicate escalating but less immediate urgency, so they are not shown with the red flashing indicator.