Yulista M6 Hangar: High-expansion Foam Fire Suppression System Test

Yulista's Aviation Center of Excellence (ACE), Meridianville AL:
During March 2021, Yulista ran a high-expansion foam fire suppression test to demonstrate that the facility was ready for work.
M6 is a National Fire Protection Agency (NFPA) 409 Group 1, Type 1 aircraft hangar that meets National Aerospace Standard 3306 requirements for fueled aircraft storage and maintenance without waivers.
M6 also houses a paint storage room and paint mixing room that are Class 1 Div 1, and Class 1 Div 2 explosion proof rooms and provides paint capability for aircraft as large as the V-22 . The key element in meeting these requirements is the High Expansion Foam fire suppression system. Located approximately 10 feet above the hangar floor, optical fire detectors continuously search for a fire signature. If a fire signature is detected, the control panel monitors it until it reaches approximately one square foot. The control panel then waits for a second optical fire detector to detect a fire signature. This process prevents inadvertent activation of the fire suppression system. When the second sensor confirms the fire, the control panel initiates a unique audible alarm and strobe beacon alerting occupants to evacuate the building, the large hangar doors and roll up doors automatically begin to close, the air conditioning system shuts down along with the large ventilation fans, the slip gate located at the lined pond closes, and an alarm signal is sent to our monitoring agency to alert the 911 system. 3 minutes after the alarm sounds, the control panel initiates the High Expansion Foam system, flooding the hangar floor with foam to smother the fire. Once the fire threat is over, the expanded foam drains through the floor to the lined pond.