How Many Fire Extinguishers Do I Need: Keeping Ahead with Safety & Compliance

Identifying how many fire extinguishers an establishment needs saves costs and ensures a safer space. Assessing what types of fires the space is susceptible to and the required extinguisher classes are crucial considerations.

A thorough fire risk assessment is essential for fire safety, identifying the specific fire extinguisher needs of a building. This process assesses materials, layout, and occupancy levels to determine the required number and types of extinguishers, which vary widely based on identified risks.

Understanding Fire Hazards and Extinguisher Types

One critical factor for determining the required number of fire extinguishers in a building is to understand the various fire hazards and select the appropriate extinguishers based on the types of potential fires.

Evaluating Fire Hazard Levels

• Light fire hazards are present in environments where the quantity and combustibility of materials are low, and fires would likely remain small and easy to control. Examples include offices or classrooms where flammable materials are minimal. On the other end of the spectrum, extra fire hazards involve high quantities of flammable liquids or similar substances that could fuel larger fires.
• Class B hazards are areas with flammable liquids like gasoline, oil, and grease that can lead to Class B fires.
• Electrical fires, or Class C fires, occur when there are high sources of electrical energy, like switches or transformers, where a non-conductive extinguishing agent is required.

Identifying fire hazard levels involves assessing potential ignition sources and the kinds of materials at risk.

Selecting the Right Types of Fire Extinguishers

The right types of fire extinguishers are specifically designed for the type of fire present:

• Dry chemical extinguishers are suitable for a wide range of environments and are intended for Class A, B, and C fires.
• Wet chemical extinguishers are designed for Class K fires, commonly found in cooking areas where oils and fats burn.
• Multi-purpose ABC fire extinguishers are highly recommended because they are effective in various situations due to their versatility.

Having the appropriate type of extinguisher accessible is crucial for effectively dealing with the specific class of fire that might arise in a particular area.

Determining the Quantity and Placement of Fire Extinguishers

Ensuring proper fire safety measures are in place is crucial for any building. The quantity and location of fire extinguishers can be critical in minimizing the damage caused by a fire.

To learn more about fire extinguisher placement, check out our blog, “Fire Extinguisher Placement Requirements: An Atlanta Guide.”

Local Codes and OSHA Standards

The Occupational Safety and Health Administration (OSHA) and local building codes mandate the primary guidelines for the placement and number of extinguishers. OSHA standards require all business premises to have the appropriate type and number of fire extinguishers.

• OSHA 29 CFR 1910.157: Provides guidelines on the proper location, maintenance, and testing of portable extinguishers.
• Local codes: These vary from place to place and must be checked for maximum compliance.

Fire protection services ensure strict adherence to policies involving local fire codes, especially for commercial buildings, parking garages, and fabric stores, which are more prone to catching fire.

Factors Influencing Quantity and Location

The size of the building, floor area, and type of business are the main factors that determine how many fire extinguishers are required. The placement of portable fire extinguishers is influenced by the potential types of fires, such as placing Class B extinguishers in areas with flammable liquids or positioning Class C fire extinguishers near electrical equipment.

• Size Ratings: Fire extinguishers are rated for the size of fire they can control. Larger extinguishers or higher numbers of extinguishers may be necessary for extra-hazard areas.
• Maximum Travel Distance: OSHA dictates that the employee travel distance to any fire extinguisher should not exceed 75 feet. In commercial buildings, this may require additional fire extinguishers on each upper floor.
• US Standard: In the US, the NFPA provides guidelines for the number of fire extinguishers required based on the square footage of a building.

For business owners, it is a good idea to engage with a licensed fire protection company to assess their needs specifically since they are knowledgeable about the different types of fire extinguishers, fire alarms, smoke alarms, and (where applicable) fire sprinkler systems.

Below we explore the type of building and the typical fire extinguisher requirements to be met:

Retail Stores:

• At least one 5-B extinguisher per 3,000 square feet of retail space

Office Buildings:

• Based on square footage, with at least one extinguisher per floor

Commercial Kitchen

• Class K extinguishers for cooking oils, and additional Class A/B/C for other risks

Dry Cleaners

• Considering the combustible chemicals, larger extinguishers or specific Class B might be required

Note: Business premises with special hazards like fuel tanks might need more frequent placement of extinguishers.

A fire safety plan should include the right number and placement of extinguishers to protect a building's occupants and assets in the earliest stages of a house or business fire. Business and building owners should follow the following information and call today a fire department or fire protection services in case of an emergency or for informational purposes to delineate the best way to lay out an effective strategy in the event of a fire.

Frequently Asked Questions