Restaurant Fire Suppression Questions
Utah-specific answers for restaurant owners in Salt Lake City and the Wasatch Front
What are the fire suppression requirements for restaurants in Utah?
Utah requires all commercial kitchens that produce grease-laden vapors to have an approved automatic fire suppression system installed over cooking equipment. This applies to fryers, charbroilers, griddles, woks, ranges, and any equipment that generates grease-laden vapors under a Type I hood.
The requirement comes from Utah Admin Code R710-7, which adopts NFPA 17A (2021 edition). The system must be UL 300 listed wet chemical, installed by a Utah State Fire Marshal-licensed concern, and inspected every six months by a licensed technician. In addition to the suppression system, you need a Class K fire extinguisher within 30 feet of cooking equipment.
Source: Utah Admin Code R710-7, Utah Fire Marshal Adopted Code Books
How often does Utah require restaurant fire suppression system inspections?
Every six months. NFPA 17A Section 10.1, adopted by Utah through R710-7, requires inspection and servicing of wet chemical kitchen hood fire suppression systems at least every six months by a properly trained, qualified, and certified person.
During each semi-annual inspection, the technician checks all nozzle surfaces, ducts, plenums, replaces fusible links or detection sensors, tests the gas shutoff valve, verifies the manual pull station, checks pressure gauges, and confirms the wet chemical agent is in good condition. Monthly visual checks by your own staff are also expected under NFPA 96.
Source: Utah Fire Marshal Fire Suppression Systems
What does Utah code R710-7 require for commercial kitchen fire systems?
R710-7 is the Utah administrative rule governing automatic fire suppression systems. It requires that all kitchen suppression systems be installed, inspected, and maintained by companies and technicians licensed through the Utah State Fire Marshal's office. The rule adopts NFPA 17A (2021) for wet chemical systems.
Key requirements include semi-annual professional inspections with current inspection tags, calibrated equipment and proper chemical supplies maintained by the servicing company, five-year retention of service records, and notification to the Fire Marshal within 30 days of employee changes or business relocation.
Source: R710-7-5 Licensing (Cornell Law)
What happens if my restaurant fails a fire suppression inspection in Utah?
If your system fails inspection, the technician documents the deficiencies and may apply a red tag indicating the system is not in compliance. Depending on severity, you may need to schedule repairs immediately or cease cooking operations until the system is corrected.
Under Utah Code 53-7-208, fire code violations are classified as a Class B misdemeanor, carrying up to 180 days in jail and a $1,000 fine plus a 90% surcharge. Each day a violation continues constitutes a separate offense. The fire marshal can order a fire watch, issue citations, or shut down a business until the hazard is eliminated.
Source: Utah Fire Prevention and Safety Act
What are the penalties for not having a working fire suppression system in Utah?
Operating a commercial kitchen without a properly maintained fire suppression system is a fire code violation. In Utah, most fire code violations are Class B misdemeanors, punishable by up to 180 days in jail and a fine of up to $1,000 plus a 90% surcharge. Each day you operate in violation is a separate offense.
Beyond the legal penalties, your business insurance may deny claims related to a kitchen fire if the suppression system was not maintained or inspected. Insurance companies routinely request proof of current inspection tags.
Source: R710-9-8 Enforcement (Cornell Law)
What NFPA standards does Utah follow for restaurant fire protection?
Utah adopts three primary NFPA standards for restaurant fire protection, all through the State Fire Marshal's office effective July 1, 2023:
- NFPA 17A (2021) - Wet Chemical Extinguishing Systems. This is the primary standard for kitchen hood suppression systems. It covers installation, inspection, maintenance, and recharging.
- NFPA 96 (2021) - Ventilation Control and Fire Protection of Commercial Cooking Operations. Covers the entire hood, duct, and exhaust system including cleaning requirements and fire protection.
- NFPA 10 (2018) - Portable Fire Extinguishers. Covers the Class K extinguisher requirement for commercial kitchens and general ABC extinguisher requirements.
Source: Utah Fire Marshal Adopted Code Books
What is the difference between a wet chemical and dry chemical suppression system?
Wet chemical systems use a potassium acetate-based agent that discharges as a fine mist and reacts with burning cooking oil through saponification, creating a thick foam blanket that cuts off oxygen and cools the oil below its auto-ignition temperature. These are the current standard for commercial kitchen hoods and are required under UL 300.
Dry chemical systems use sodium bicarbonate or potassium bicarbonate powder. While effective, they do not cool cooking oil as effectively and can cause re-ignition. Older kitchens may still have dry chemical systems, but UL 300 and NFPA 17A effectively require wet chemical for new installations and replacements.
How do I know if my Ansul system needs to be replaced or just serviced?
Most Ansul systems (and systems from Kidde, Pyro-Chem, and Range Guard) can be serviced, recharged, and kept in operation for many years. During each semi-annual inspection, the technician checks for corrosion, damaged nozzles, kinked piping, expired chemical agent, and worn components.
Replacement is typically needed when the system has extensive corrosion, the cylinders fail hydrostatic testing, components are no longer available from the manufacturer, or the kitchen layout has changed significantly and the nozzle coverage no longer matches the cooking equipment arrangement. We will always tell you honestly whether a service or a replacement makes more sense for your situation.
What is the difference between a Type I and Type II hood, and which needs suppression?
A Type I hood (grease hood) is required over any cooking equipment that produces grease-laden vapors: fryers, charbroilers, griddles, woks, and ranges. Type I hoods contain baffle grease filters and must have an automatic fire suppression system. They fall under NFPA 96 requirements for ductwork construction, cleaning access, and fire protection.
A Type II hood (condensate/heat hood) is used over equipment that produces heat and steam but no grease: dishwashers, ovens, pasta cookers, and steam tables. Type II hoods do not require grease filters or fire suppression systems.
Installing a Type II hood over grease-producing equipment is one of the most dangerous fire hazards in a commercial kitchen and a serious code violation. If you are unsure which type of hood you have, we can identify it during an inspection.
How often do commercial kitchen hood systems need to be cleaned in Utah?
NFPA 96 Table 11.4 sets cleaning frequency based on the type and volume of cooking:
- Monthly: High-volume operations like 24-hour restaurants, charbroiling, and wok cooking
- Quarterly: Moderate-volume cooking operations
- Semi-annually: Low-volume cooking (churches, day camps, seasonal businesses)
- Annually: Systems serving solid fuel cooking operations
Hood cleaning must be performed by a Utah State Fire Marshal-licensed kitchen exhaust duct cleaning company under R710-7. The cleaner must issue a Completion and Deficiency Report after each service.
Do I need a separate fire suppression system for each cooking station?
Not necessarily a separate system, but every cooking appliance that produces grease-laden vapors must have nozzle coverage from the suppression system. A single system can protect multiple cooking stations if the nozzles are properly positioned and the agent volume is sufficient. During installation or modification, the layout is engineered to ensure every protected appliance is within the system's coverage pattern.
If you add new cooking equipment or rearrange your kitchen, the suppression system coverage must be re-evaluated. Adding a fryer that is not under a covered nozzle is a code violation.
Can I use my restaurant while the fire suppression system is being serviced?
During a routine semi-annual inspection, you can keep the restaurant open but cooking operations under the protected hood must stop temporarily while the system is being inspected and the fusible links are replaced. Most inspections take 30 to 60 minutes.
If the system needs to be taken out of service for repairs (recharging, replacing components, or major maintenance), cooking must stop until the system is back in service. Under IFC Section 901.7, if a fire protection system is out of service for more than 4 hours, a fire watch is required. We schedule service around your kitchen hours to minimize disruption.
My restaurant fire suppression system went off. What are the steps to reopen?
When a wet chemical system discharges, it simultaneously shuts off the gas supply to cooking equipment. All cooking must stop immediately. Do not attempt to reset or clean the system yourself.
- Call a licensed fire suppression service company (Whitewater: 307-677-7296)
- Contact the local fire department if they are not already on scene
- A licensed technician inspects all components: nozzles, piping, cylinders, detection devices, agent condition
- Damaged components are repaired or replaced
- System is recharged with fresh wet chemical agent and new cartridges
- Fusible links or detection sensors are replaced
- Gas shutoff valves are tested for proper operation
- The technician certifies the system and applies a new inspection tag
- The hood, ductwork, and cooking surfaces must be cleaned of discharged chemical before cooking resumes
- Local health department clearance may be required before serving food
Source: Utah Fire Marshal Restaurant Guidelines (PDF)
Does Utah require fire suppression systems in food trucks?
Utah does not have a single statewide food truck fire code. Requirements are set by local jurisdictions. However, the general principle is the same as for fixed restaurants: if the food truck has cooking equipment that produces grease-laden vapors (fryers, griddles, open-flame cooking), a Type I hood with an approved UL 300 wet chemical fire suppression system is required under NFPA 96.
All mobile food units must carry at minimum a 5-pound ABC fire extinguisher. If grease-producing cooking is present, a Class K fire extinguisher is also required. The suppression system must be installed and maintained by a Utah-licensed fire suppression company, and local fire marshal approval is required for placement.
Food trucks that only serve pre-packaged food or use only steam/heat equipment (no grease) generally do not require a suppression system.
Source: UVU Fire Marshal Mobile Food Requirements
Whitewater Fire Protection serves Salt Lake City and the Wasatch Front
Licensed through the Utah State Fire Marshal's Office. Over 20 years in the industry.
Request Service Call 307-677-7296