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FIRE SUPPRESSION SYSTEMS
Kitchen Hood + Restaurant
Commercial kitchens operate with open flame, high heat, and grease-laden vapors that can rapidly develop into uncontrolled fire conditions. Kitchen hood fire suppression systems are designed to automatically detect and suppress fire hazards at cooking appliances, kitchen hoods, and exhaust ducting.
Fire Defense services and maintains this kitchen hood fire suppression system protecting fryers, a cheese melter, 10-burner range, gas radiant charbroiler, hood, and plenum in a Mexican restaurant, with a double stack oven and griddle also protected (not pictured). 
Fire Defense services and maintains this kitchen hood fire suppression system protecting five deep fat fryers with overlapping protection in a high-volume restaurant with continuous frying operations. 
Fire Defense services and maintains this kitchen hood fire suppression system protecting a gas radiant charbroiler, two tilt skillets, a griddle, and two fryers on a large commercial kitchen island in a community center kitchen, with a 12-burner range and three double-stack ovens also protected on the opposite side of the hood (not pictured). 
Fire Defense performing a first-time inspection of a kitchen hood fire suppression system protecting a Thai restaurant appliance lineup including (2) fryers, a charbroiler, a 6-burner range, and (4) wok stations.
Fire detection is provided by mechanical fusible links or electronic spot heat detectors that, when activated, discharge wet chemical or water-based agents to rapidly knock down flames and cool surfaces.
Detail photo during a new kitchen hood fire suppression installation showing exhaust air plenum protection nozzle coverage in a system using fusible link detection. 
Detail photo during a new kitchen hood fire suppression installation showing hood plenum protection xnozzle coverage in a system using spot heat detection.
Kitchen hood fire suppression systems can also interlock with cooking equipment and ventilation controls to shut down gas or electric power, turn off makeup air, and maintain exhaust airflow to help prevent reignition and further contain the hazard.
PROTECTED KITCHENS
Airports. Cafeterias. Catering kitchens. Convention centers. Corporate offices. Correctional facilities. Country clubs. Delis. Educational facilities. Family restaurants. Fast food chains. Fine dining restaurants. Food courts. Food trucks. Gas stations. Ghost kitchens. Grocery stores. Hospitals. Hotels. Nursing homes. Places of worship. Sports stadiums. Universities.
APPLIANCE COVERAGE
Braising pans. Char-broilers. Conveyor broilers. Donut fryers. Fryers. Griddles. Gyro-cookers. Hot tops. Pizza ovens. Ranges. Radiant charbroilers. Salamanders. Solid fuel grills. Stockpot ranges. Tilt skillets. Tilting Kettles. Upright broilers. Woks.
PROTECTED VENTILATION
Ducts. Exhaust fans. Filters. Hoods. Plenums. Pollution control units.
INTERLOCKED SYSTEMS
Electric power. Exhaust air. Gas valves. HVAC systems. Make-up air. Microswitches. Pollution control units. Shunt trip breakers.
Design + Install
Fire Defense provides design and installation for kitchen hood fire suppression systems protecting cooking appliances, hoods, and exhaust systems.
- Appliance-specific and overlapping nozzle coverage
- Hood, plenum, and duct protection
- Fuel shutoff integration for gas and electrical equipment
- Manual pull station installation
- Portable fire extinguisher selection and installation
ITM
Fire Defense performs inspection, testing, and maintenance for kitchen hood fire suppression systems.
- Semi-annual inspection in accordance with NFPA requirements
- Nozzle alignment, condition, and coverage verification
- Detection line or device inspection and function check
- Fuel shutoff and exhaust system interlock testing
- System recharge and post-discharge restoration
Emergency Service
24/7 emergency service is available for kitchen hood fire suppression systems.
- Response to system discharge and emergency shutdown events
- Post-discharge reset, recharge, and system restoration
- Replacement of nozzles, detection lines, and system components
Codes and Standards
Fire Defense performs services in accordance with NFPA 96, NFPA 17A, and applicable codes and AHJ requirements.
Note: NFPA makes its codes and standards available online for free. Select View Free Access under Current & Prior Editions and create a free account.
Visit NFPA 17A: Wet Chemical Extinguishing Systems →
Visit NFPA 96: Ventilation Control and Fire Protection of Commercial Cooking Operations →
Fire Defense in progress of installing a new kitchen hood fire suppression system for a new restaurant. 
Fire Defense replaced all mechanical fusible links during a kitchen hood fire suppression system inspection. 
Fire Defense installed this new manual pull station for a kitchen hood fire suppression system, as well as the Class K portable fire extinguisher. 
Fire Defense performing an inspection on a kitchen hood fire suppression system. 
Fire Defense completed another successful kitchen hood fire suppression system inspection in a food truck.