Class K fire extinguishers are required in commercial kitchens with deep fryers, woks and other appliances that use vegetable oils, animal fats or grease. If you own a restaurant in Connecticut, the short answer is yes. NFPA 10 requires Class K wet chemical fire extinguishers wherever cooking media that produce hot grease fires are in use. The longer answer involves placement, quantity, training and coordination with your kitchen hood suppression system. This guide explains what Class K extinguishers do, why they matter for restaurant kitchen safety and where Connecticut fire marshals expect them. Royal Fire Protection services restaurant fire protection in Connecticut. Our team brings over 20 years of fire protection experience. We serve South Norwalk waterfront restaurants, Hartford downtown dining and West Hartford Center.
What Class K Fire Extinguishers Actually Do
PARAGRAPH (100-150 words) Class K fire extinguishers contain wet chemical agent for fires involving cooking oils and animal fats. Hot oil fires reach much higher temperatures than ordinary combustible fires. They can’t be safely extinguished with standard ABC dry chemical extinguishers. ABC powder on a hot oil fire actually splashes burning oil and spreads the fire further. Class K wet chemical cools the oil below its auto-ignition temperature. It also forms a saponification layer over the oil surface that prevents reignition. Every commercial kitchen with deep fryers, woks or grease-laden cooking equipment needs a Class K extinguisher within reach of the cooking station under NFPA 10.
NFPA 10 Placement and Quantity Requirements
PARAGRAPH (100-150 words) NFPA 10 specifies travel distance of no more than 30 feet from any commercial cooking appliance to the nearest Class K extinguisher. The extinguisher must be mounted between four and five feet from the floor. It must be accessible without obstruction and clearly visible from the cooking area. Restaurants with multiple cooking stations may need multiple Class K extinguishers to meet the travel distance requirement. The Class K extinguisher is in addition to the standard ABC dry chemical extinguisher required for the rest of the restaurant. Connecticut fire marshals check commercial kitchens for properly placed, properly serviced Class K extinguishers with current annual inspection tags.
Coordination With Kitchen Hood Suppression
PARAGRAPH (100-150 words) Class K fire extinguishers work together with the kitchen hood suppression system over the cooking line. The hood system is the primary fire suppression for grease fires under the exhaust hood. The Class K extinguisher is the secondary suppression for any fire that escapes the hood coverage. Both systems require regular inspection. Kitchen hood suppression requires semi-annual inspection under NFPA 96 in Connecticut commercial kitchens. Class K extinguishers require annual inspection under NFPA 10. Scheduling both inspections during the same service visit saves time. It also gives the restaurant owner one accountable contractor for both fire protection systems in the kitchen.
Class K Service in Connecticut Restaurants
PARAGRAPH (100-150 words) Class K fire extinguisher service follows the same NFPA 10 schedule as other portable extinguishers. Annual inspection by a licensed contractor includes tag attachment, weight check, charge verification and condition assessment. Six-year internal exam and twelve-year hydrostatic testing also apply. Class K wet chemical agent generally costs more than ABC dry chemical. But service intervals are the same. After a discharge, Class K extinguishers require recharge by a licensed contractor. Royal Fire Protection services Class K extinguishers in restaurant kitchens in Connecticut. That includes South Norwalk SoNo restaurants, West Hartford Center and downtown Hartford dining. Restaurant owners get service tags and written documentation for fire marshal review.