Kitchen Fire Suppression Systems
Kitchen fire suppression systems are pre-engineered extinguishing systems installed over fryers, griddles and exhaust ductwork in commercial kitchens that automatically suppress grease fires with a wet chemical agent while shutting down the energy supply.
Design and Actuation
Nozzles positioned over cooking appliances and inside the exhaust duct discharge a wet chemical agent on activation, suppressing grease fires by saponifying the burning surface and cooling it. A thermal detection line or point detector triggers the system automatically, and a mechanical or electrical manual release is always provided as well. On discharge, the system simultaneously shuts off the gas or electrical supply to the cooking appliances and the exhaust fan.
Maintenance and Grease Build-Up
Regular cleaning of filters, exhaust ductwork and fans prevents an additional grease fire load from accumulating there, which can otherwise trigger a secondary fire inside the duct system even when the suppression system itself functions correctly. Nozzles, the release mechanism and the detection line are function-tested at defined intervals.
Insurance Relevance
Kitchen fires are among the most frequent causes of fire in the hospitality and catering sector. A functioning, regularly tested kitchen suppression system combined with clean exhaust pathways is a key rating criterion for property insurers in this segment and directly affects the business interruption consequences of a kitchen fire.
Standards and codes
- VdS 3846 – Insurance Technical Evaluation of Kitchen Fire Suppression Systems
- NFPA 96 – Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations