Aircraft hangars combine a large fuel load, high roofs, big open volumes and very valuable aircraft. A fuel spill fire under a wing spreads fast, and water alone cannot put it out. We provide aircraft hangar fire protection and fire extinguishing systems that combine foam, water, detection and smoke control.
Hangar fire protection and extinguishing systems
- Foam-water deluge systems for overhead protection of Group I and II hangars
- Closed-head foam-water sprinklers and automatic water sprinklers
- Low-level and high-expansion foam for fuel spill fires under the aircraft
- Foam monitors, including remote-controlled wall and floor monitors
- Foam skids, proportioners, tanks and fire pumps sized for the hangar
- Optical flame detection and fire alarm
- Smoke and heat extraction with roof vents and make-up air
Protection by hangar group (NFPA 409)
The required protection depends on the hangar group, which NFPA 409 sets from aircraft access door height, fire area and construction. Group I covers the largest hangars, Group II and III progressively smaller ones, and Group IV covers membrane-covered steel frame hangars. See the group table and the 3D demo on our aircraft hangar fire protection page.
How we work
- Collect hangar data: size, door height, aircraft, fuel load and water supply
- Define the protection concept for the hangar group
- Select foam concentrate, proportioning, pumps, detection and smoke control
- Prepare calculations and documents for approval
Related
- Interactive 3D hangar fire demo
- Foam extinguishing systems
- Foam skid configurator
- Remote monitor configurator
- Smoke and heat extraction systems
Frequently asked questions
Which hangars do you cover?
Hangars of all NFPA 409 groups (I to IV): from wide-body maintenance hangars to small general aviation and membrane-covered hangars.
What do you need to start?
Hangar dimensions and door height, the aircraft types and fuel load, the water supply and your location. With these we can propose a protection concept.
Is there a way to see how the system behaves?
Yes. Our interactive 3D demo shows a foam suppression system responding to a fuel spill fire in each hangar group.
Which standards do you design to?
NFPA 409 for the hangar group and protection level, NFPA 11 and 16 for foam and foam-water systems, NFPA 13 for sprinklers and NFPA 72 for detection, together with local regulation and the authority having jurisdiction.