The Ultimate Guide to Fire Suppression Systems for Food Trucks

Over the last decade, food trucks have become an extremely popular way to start a culinary business on a budget. However, with the rise of food trucks comes increased regulations around critical fire safety systems. This comprehensive guide will provide food truck owners everything they need to know about choosing, installing, and maintaining the right fire suppression systems. Properly implemented fire protection is essential to safeguard your hard-earned business investment, loyal employees, and devoted customers.

Cooking appliances, fuel sources, ventilation issues, and storage of combustible chemicals within confined spaces amplify the fire risks in food trucks. Adequately addressing these risks upfront with high-quality fire systems will provide peace of mind and help you focus on serving up delicious cuisine.

Read on for an in-depth look at the key systems your food truck needs:

  • Wet chemical fire suppression
  • Dry chemical fire suppression
  • Fire extinguishers
  • Ventilation systems
  • Employee training

We’ll also answer some frequently asked questions about requirements, maintenance, and utilizing certified professionals so you can keep your food truck compliant and safe at all costs. Let’s get cooking!

Fire Suppression Systems

Automatic fire suppression systems are a non-negotiable, lifesaving piece of equipment for food trucks and concession trailers. Extensive research by the National Fire Protection Association (NFPA) led to recent updates in codes and standards to mandate certified fire protection systems on mobile cooking operations.

Suppression systems work by automatically detecting excessive heat and combustible gasses then intervening to extinguish the flames. They rapidly suffocate fires before they grow out of control in the tight confines of a food truck.

There are two main types of fire suppression systems used for mobile cooking:

Wet Chemical Fire Suppression

Wet chemical fire suppression uses liquid firefighting agents to remove heat and oxygen from a fire. The system consists of stainless steel piping and triggers connected to an agent storage tank. When temperatures approach the activation point, fusible links melt and release pressurized liquid to extinguish the flames.

Wet chemical agents are ideal for commercial cooking equipment with open flames and hot oils. They effectively knock down fires fueled by animal and vegetable-based cooking media.

Here’s a closer look at how wet chemical systems function:

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strategically placed over cooking equipment dispense the suppression agent

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melt at the desired temperature (typically 160-220°F) to trigger activation

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stores liquid suppressant under pressure for rapid discharge

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distributes suppressant from the tank to nozzle placement

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provides emergency activation as a backup


When triggered, a fine mist of wet chemical is dispersed over the area. This cools grease back below its flash point and displaces oxygen to remove the fire’s energy source. Systems can be designed as single tank setups for smaller trucks or double tank for more cooking equipment coverage.

Some key benefits of wet chemical fire suppression include:

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in seconds after activation due to pressurization

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ideal for Class K cooking oil/grease fires

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contained since less agent discharge needed

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Requires agent top-off not full tank recharge after release

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Automatic fuel cutoff capability when integrated with gas lines


Proper installation positioning is critical for wet chemical effectiveness. A certified technician should complete an assessment of cooking equipment and truck layout prior to design. Nozzles must be located over **hazard zones** but not directly above to allow dispersion pattern. New systems should also be thoroughly tested and inspected to ensure seamless activation.

For continued functionality, wet chemical fire suppression systems require semi-annual or quarterly inspections by a certified company.

Technicians will check:

  • Agent tank weight/pressure
  • Nozzle placement and debris obstruction
  • Fusible links intact and undamaged
  • Piping seals for leakage
  • Manual pull and fuel cutoff integration

Fire Suppression Installation

Proper installation of your fire suppression system is imperative for fast, effective fire knockdown. Here is an overview of the end-to-end process:

  • An initial risk assessment of your cooking equipment by the installing company
  • Design of the customized layout, including agent tank location and piping paths
  • Mounting of nozzles above cooking equipment using manufacturer guidelines
  • Proper enclosure and mounting of piping to prevent tampering or damage
  • Integration with gas fuel lines for automatic cutoff functionality
  • Thorough testing of fusible links, suppression agent dispersion, and fuel cutoff
  • Final commissioning walkthrough and maintenance instructions

Reputable companies follow NFPA standards for mobile cooking fire suppression. They also stand behind their installation with maintenance packages and warranties.

Upkeeping your suppression system’s health through periodic inspections is equally vital.

Maintaining Fire Suppression Systems

All fire suppression systems require ongoing inspections, testing, and maintenance. For wet chemical systems in food trucks, full maintenance service should occur on a semi-annual or quarterly basis. This essential work is performed by certified professionals.

Maintenance visits consist of :

  • Weighing agent tanks and checking pressure levels
  • Visually inspecting piping and nozzles for issues
  • Testing fusible links are intact with no corrosion
  • Checking manual release and fuel line cutoff functionality
  • Cleaning nozzles and replacing as needed
  • Blowing compressed air through piping to remove obstructions
  • Topping off tanks or replacing agent as required
  • Testing smoke, heat, or gas monitoring devices

Like changing the oil in your truck, periodic maintenance helps suppression systems operate optimally when that critical moment strikes. Never skip or delay recommended service intervals.

Fire Extinguishers

In addition to automatic suppression, food trucks must contain readily accessible fire extinguishers. These portable systems provide a first line of defense for small fires. They allow staff to immediately intervene while the fire is contained.

Two classes of extinguishers are essential for food trucks – Class K and ABC.

Class K Extinguishers

Class K fire extinguishers uniquely target commercial cooking equipment hazards. They are specially designed for kitchen areas with vegetable and animal oils, fats, and grease.

Class K extinguishers utilitize potassium acetate based agents. This is a low pH wet chemical ideal for cooking mediums since it cools oil below ignition temperature. Here are some advantages of Class K extinguishers:

  • Can quickly suppress deep fat fryer fires before growing out of control
  • Minimal corrosive impact on appliances after deployment
  • Safer alternative compared to water on grease fires
  • Works in tandem with wet chemical suppression systems

Placement is key – Class K units should be mounted no further than 30 feet from commercial cooking equipment. They are optimal for staff to grab after the suppression system activates to fully extinguish remaining embers.

ABC Dry Chemical Extinguishers

ABC fire extinguishers have multi-purpose effectiveness for other common food truck fire hazards. The “ABC” rating signifies they work on:
  • Class A fires Ordinary combustibles like paper and wood
  • Class B fires – Flammable liquids, gases, greases
  • Class C fires – Energized electrical equipment
ABC extinguishers utilize monoammonium phosphate or sodium bicarbonate based agents. They stop the fire reaction that produces heat and flame. Anyone can operate an ABC extinguisher with proper training. Simple use instructions include:
  • Pull the locking pin breaking the tamper seal
  • Aim the nozzle at the base of the flames
  • Squeeze the handles together to discharge agent
  • Sweep side to side covering the area of the fire
For food trucks, a minimum 2A:10B:C rating is recommended for versatility against multipurpose risks. Larger units up to 10lb can also be installed. Truck owners should consider:
  • Mounting locations that meet local fire code access requirements
  • Units placed where staff can safely reach from outside cooking area
  • Provide training to all staff on using extinguisher properly

Fire Extinguisher Maintenance

Fire extinguishers require routine maintenance to function as designed in an emergency:

  • Staff should perform quick visual monthly checks – check gauge, seals, and mounts
  • A certified technician must service extinguishers annually
    • Thoroughly examines internal components
    • Tests pressure levels and mechanical parts
    • Replaces used suppressant agent
  • After any use, immediately recharge extinguisher with new agent

You can request fire extinguisher maintenance along with your suppression system servicing for convenience.

Ventilation Systems

The confined quarters of a food truck greatly amplify the need for proper ventilation. Effective removal of smoke, steam, fumes, and grease-laden air improves safety and air quality. Robust ventilation also bolsters your suppression system’s ability to detect fires early.

The Purpose of Ventilation

A high-performing ventilation system:

  • Rapidly exhausts grease particles and volatile organic compounds (VOCs) released from cooking
  • Prevents accumulation of flammable vapors, smoke, and hot gasses
  • Removes steam, humidity, heat, and odors
  • Pulls in fresh air to replenish the lost air volume

Proper ventilation should be in continuous use during all cooking appliance operation as recommended by NFPA 96 standards. Neglecting ventilation maintenance can have dire consequences.

Type I Exhaust Hoods

Type I ventilation hoods are essential for food trucks. They are specifically designed for grease-laden vapors like those from grills, fryers, and other cooking equipment. Key qualities include:

  • Grease filters trap grease particles before they spread through ductwork
  • Fire-actuated dampers automatically close to isolate flames
  • Robust exhaust fans sized appropriately for CFM needs
  • Proper mounting 2-6 inches above cooking surface

Type I hoods with regular maintenance remove the fuel that could trigger or spread fires. Work with a certified HVAC professional for optimal food truck ventilation design.

Ventilation Maintenance

Like any equipment, ventilation systems need routine care for peak operation:

  • Grease filter cleaning** monthly, quarterly full system cleaning
  • Exhaust fan inspection** for continued airflow efficiency
  • Check ducting for any detachments or holes causing leaks
  • Confirm dampers are working for proper activation

NFPA 96 dictates thorough system cleaning every 3 months minimum by qualified professionals. Proper maintenance drastically reduces the likelihood of fires propagating through accumulated grease.

Employee Training

The most state-of-the-art fire safety equipment still depends on properly trained staff to function effectively. Fire and life safety education prepares employees to appropriately respond in an emergency. Include these components in annual training for all food truck staff:

  • Fire hazards specific to cooking appliances and fuel sources onboard
  • Operating the fire suppression system and extinguishers
  • When and how to notify the fire department as needed
  • Evacuation plan with designated meeting location
  • Hands-on use of extinguishers (conducted safely with PPE)

Empowered with knowledge, staff can swiftly enact life-saving response efforts. Discuss any past malfunctions or fire events as examples during training sessions.

Get Your Free Safety Survey

Within 24 hours we will setup an appointment for your free on-site safety survey to see how we can help protect your business.



Frequently asked questions

New food truck owners often have additional questions when outfitting their vehicle with fire protection. Here are some common FAQs:

What are the major fire risks in a food truck?
Cooking oils and confined space amplify risks from otherwise small ignition sources. Fuel sources, electrical issues, duct fires, and blocked ventilation also represent top hazards.
What's the difference between a wet and dry chemical fire suppression system?
Wet chemical uses liquid agents ideal for cooking oil and grease fires, while dry chemical uses powder agents best for solid fuel cooking appliances.
How often should the fire suppression system be inspected?
NFPA codes require servicing by a certified technician at least semi-annually. Quarterly inspections are recommended for optimal functioning.
What ventilation system maintenance is required?
Grease filters should be cleaned monthly. Full system cleaning by a professional certified in NFPA 96 should occur quarterly to semi-annually
How can I find certified fire protection professionals in my area?
Check for local referrals from the fire marshal’s office or food truck owners you trust. Search reputable directories like the National Association of Fire Equipment Distributors (NAFED) company finder.


Operating a safe, compliant food truck takes diligence across daily processes. Many truck owners overlook fire protection in the scramble of opening. But properly installed and maintained systems are essential investments.

This guide provided an in-depth look at the core elements of food truck fire safety:

  • Automatic suppression tailored to your cooking equipment
  • Fire extinguishers for initial manual intervention
  • Ventilation removing flammable byproducts
  • Training so staff can respond appropriately

Stay proactive in your fire prevention efforts. Seek out the experts at All American Fire Protection in Spring Lake, NC for all your food truck fire protection needs. Their NICET-certified technicians have decades of experience designing, installing, and maintaining fire suppression systems, extinguishers, and ventilation tailored for the unique risks of food trucks.

All American Fire Protection is a leader in mobile fire safety. They stay current on the latest NFPA codes and work directly with local fire marshals to ensure your total compliance. Trust their certified team to conduct fire risk assessments and equip your food truck with the ideal life safety systems.

With All American Fire Protection’s robust solutions in place, you can focus on serving up those mouth-watering dishes to hungry patrons along the Carolina coast! Your loyal customers will thank you for making their safety a top priority.

Contact All American Fire Protection today at (910) 496-0600 to request a quote for your food truck. Their experts are ready to customize options to fit your budget while optimizing fire safety. Stay confident your food truck meets the highest standards with All American Fire Protection.

For additional food truck fire guidance, see the resources below:

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