13.6.3 Installation of Portable Fire Extinguishers

The installation of extinguishers shall be independent of whether the building is equipped with automatic sprinklers, standpipe and hose, or other fixed protection equipment. [10:6.1.1.1]

Additional extinguishers shall be permitted to be installed to provide more protection as necessary. [10:6.1.1.2]

Fire extinguishers having ratings less than those specified in Table 13.6.3.2.1.1 and Table 13.6.3.3.1.1 shall be permitted to be installed, provided they are not used in fulfilling the minimum protective requirements of this subsection, except as modified in 13.6.3.2.1.4, 13.6.3.2.1.5, and 13.6.3.3.1.1.1. [10:6.1.1.3]

Fire extinguishers shall be conspicuously located where they are readily accessible and immediately available in the event of fire. [10:6.1.3.1]

Fire extinguishers shall be located along normal paths of travel, including exits from areas. [10:6.1.3.2]

Fire extinguishers shall be installed in locations where they are visible except as permitted by 13.6.3.1.3.3.2. [10:6.1.3.3.1]

In rooms and in locations where visual obstructions cannot be completely avoided, signs or other means shall be provided to indicate the extinguisher location. [10:6.1.3.3.2]

Signs or other means used to indicate fire extinguisher location shall be located in close proximity to the extinguisher. [10:6.1.3.3.3]

Signs or other means used to indicate fire extinguisher location shall be visible from the normal path of travel. [10:6.1.3.3.4]

Portable fire extinguishers other than wheeled extinguishers shall be installed using any of the following means:

1. Securely on a hanger intended for the extinguisher
2. In a bracket incorporating releasing straps or bands supplied by the extinguisher manufacturer
3. In a listed bracket incorporating releasing straps or bands approved for such purpose
4. In approved cabinets or wall recesses

[10:6.1.3.4]

Wheeled fire extinguishers shall be located in designated locations. [10:6.1.3.5]

Fire extinguishers installed in vehicles or under other conditions where they are subject to dislodgement shall be installed in approved strap-type brackets specifically designed for this application. [10:6.1.3.6]

Fire extinguishers installed under conditions or in locations where they are subject to physical damage (e.g., from impact, vibration, the environment) shall be protected against such damage. [10:6.1.3.7]

Fire extinguishers having a gross weight not exceeding 40 lb (18.14 kg) shall be installed so that the top of the fire extinguisher is not more than 5 ft (1.53 m) above the floor. [10:6.1.3.8.1]

Fire extinguishers having a gross weight greater than 40 lb (18.14 kg) (except wheeled types) shall be installed so that the top of the fire extinguisher is not more than 3¹/₂ ft (1.07 m) above the floor. [10:6.1.3.8.2]

In no case shall the clearance between the bottom of the hand portable fire extinguisher and the floor be less than 4 in. (102 mm). [10:6.1.3.8.3]

Fire extinguishers shall be installed so that the fire extinguisher's operating instructions face outward. [10:6.1.3.9.1]

Hazardous materials identification systems (HMIS) labels, 6-year maintenance labels, hydrostatic test labels, or other labels shall not be located or placed on the front of the extinguisher. [10:6.1.3.9.2]

The restrictions of 13.6.3.1.3.9.2 shall not apply to the original manufacturer's labels, labels that specifically relate to the extinguisher's operation or fire classification, or inventory control labels specific to that extinguisher. [10:6.1.3.9.3]

Cabinets housing fire extinguishers shall not be locked, except where fire extinguishers are subject to malicious use and cabinets include a means of emergency access. [10:6.1.3.10.1]

The location of fire extinguishers as described in 13.6.3.1.3.3.2 shall be marked conspicuously. [10:6.1.3.10.2]

Fire extinguishers mounted in cabinets or wall recesses shall be placed so that the fire extinguisher's operating instructions face outward. [10:6.1.3.10.3]

Where fire extinguishers are installed in closed cabinets that are exposed to elevated temperatures, the cabinets shall be provided with screened openings and drains. [10:6.1.3.10.4]

Cabinets or wall recesses for fire extinguishers shall be installed such that the extinguisher mounting heights specified in 13.6.3.1.3.8.1 and 13.6.3.1.3.8.2 are met. [10:6.1.3.10.5]

For fire resistance-rated walls, only surface-mounted cabinets or listed fire-rated cabinets shall be installed. [10:6.1.3.10.6]

Fire extinguishers shall not be exposed to temperatures outside of the listed temperature range shown on the fire extinguisher label. [10: 6.1.3.11]

Fire extinguishers containing only plain water shall be protected to temperatures as low as —40°F (—40°C) by the addition of an antifreeze that is stipulated on the fire extinguisher nameplate. [10:6.1.4.1]

Calcium chloride solutions shall not be used in stainless steel fire extinguishers. [10:6.1.4.2]

The connection to the electronic monitoring device shall be continuously supervised for integrity. [10:6.1.5.1]

The power source for the electronic monitoring device shall be supervised for continuity of power. [10:6.1.5.2]

Minimal sizes of fire extinguishers for the listed grades of hazards shall be provided on the basis of Table 13.6.3.2.1.1, except as modified by 13.6.3.2.1.4 and 13.6.3.2.1.5. [10:6.2.1.1]

Table 13.6.3.2.1.1 Fire Extinguisher Size and Placement for Class A Hazards

Criteria	Light Hazard Occupancy	Ordinary Hazard Occupancy	Extra Hazard Occupancy
Minimum rated single extinguisher	2-A	2-A	4-A
Maximum floor area per unit of A	3000 ft2	1500 ft2	1000 ft2
Maximum floor area per extinguisher	11,250 ft2	11,250 ft2	11,250 ft2
Maximum travel distance to extinguisher	75 ft	75 ft	75 ft

For SI units, 1 ft = 0.305 m; 1 ft² = 0.0929 m².
Note: For maximum floor area explanations, see E.3.3 of NFPA 10.
[10:Table 6.2.1.1]

The minimum number of extinguishers for Class A hazards shall be sufficient to meet the requirements of 13.6.3.2.1.2.1 through 13.6.3.2.1.2.3. [10:6.2.1.2]

The minimum number of fire extinguishers for Class A hazards for each floor of a building shall be determined by dividing the total floor area by the maximum area to be protected per extinguisher as determined by Table 13.6.3.2.1.1. (See Annex E of NFPA 10.) [10:6.2.1.2.1]

Fire extinguishers shall be located so that the maximum travel distances shall not exceed 75 ft(22.9 m), except as modified by 13.6.3.2.1.4. [10:6.2.1.2.2]

Where the quantity of extinguishers required to satisfy 13.6.3.2.1.2.2 exceeds the number calculated in 13.6.3.2.1.2.1, additional extinguishers shall be installed. [10:6.2.1.2.3]

Smaller fire extinguishers that are rated on Class B and Class C fires but do not have a minimum 1-A rating shall not be used to meet the requirements of 13.6.3.2.1. [10:6.2.1.3]

Fire extinguishers of lesser rating shall be permitted to be installed but shall not be considered as fulfilling any part of the requirements of Table 13.6.3.2.1.1, except as permitted in 13.6.3.2.1.4.1 and 13.6.3.2.1.4.2. [10:6.2.1.3.1]

Up to two water-type extinguishers, each with 1-A rating, shall be permitted to be used to fulfill the requirements of one 2-A rated extinguisher. [10:6.2.1.3.1.1]

Two 2¹/₂ gal (9.46 L) water-type extinguishers shall be permitted to be used to fulfill the requirements of one 4-A rated extinguisher. [10:6.2.1.3.1.2]

Up to one-half of the complement of fire extinguishers specified in Table 13.6.3.2.1.1 shall be permitted to be replaced by uniformly spaced 1¹/₂ in. (38 mm) hose stations for use by the occupants of the building. [10:6.2.1.4]

Where hose stations are so provided, they shall conform to NFPA 14. [10:6.2.1.4.1]

The location of hose stations and the placement of fire extinguishers shall be such that the hose stations do not replace more than every other fire extinguisher. [10:6.2.1.4.2]

Where the area of the floor of a building is less than that specified in Table 13.6.3.2.1.1, at least one fire extinguisher of the minimum size required shall be provided. [10:6.2.1.5]

The protection requirements shall be permitted to be fulfilled with fire extinguishers of higher rating, provided the travel distance to such larger fire extinguishers does not exceed 75 ft (22.9 m) and the maximum floor area per unit of A is not exceeded. [10:6.2.1.6]

Minimum ratings of fire extinguishers for the listed grades of hazard shall be provided in accordance with Table 13.6.3.3.1.1. [10:6.3.1.1]

Table 13.6.3.3.1.1 Fire Extinguisher Size and Placement for Class B Hazards

Type of Hazard	Basic Minimum Extinguisher Rating	Maximum Travel Distance to Extinguishers
		ft	m
Light	5-B	30	9.14
	10-B	50	15.25
Ordinary	10-B	30	9.14
	20-B	50	15.25
Extra	40-B	30	9.14
	80-B	50	15.25

Note:
The specified ratings do not imply that fires of the magnitudes indicated by these ratings will occur, but rather they are provided to give the operators more time and agent to handle difficult spill fires that have the potential to occur.
[10: Table 6.3.1.1]

Two or more fire extinguishers of lower rating shall not be used to fulfill the protection requirements of Table 13.6.3.3.1.1 except as permitted by 13.6.3.3.1.1.2 and 13.6.3.3.1.1.3. [10:6.3.1.1.1]

Up to three AFFF or FFFP fire extinguishers of at least 2¹/₂ gal (9.46 L) capacity shall be permitted to be used to fulfill extra hazard requirements. [10:6.3.1.1.2]

Two AFFF or FFFP fire extinguishers of at least 1.6 gal (6 L) capacity shall be permitted to be used to fulfill ordinary hazard requirements. [10:6.3.1.1.3]

Fire extinguishers of lesser rating, designed for small specific hazards within the general hazard area, shall be permitted to be installed but shall not be considered as fulfilling any part of the requirements of Table 13.6.3.3.1.1, unless permitted by 13.6.3.3.1.1.1 or 13.6.3.3.1.1.2. [10:6.3.1.2]

Fire extinguishers shall be located so that the maximum travel distances do not exceed those specified in Table 13.6.3.3.1.1. [10:6.3.1.3]

The protection requirements shall be permitted to be fulfilled with fire extinguishers of higher ratings, provided the travel distance to such larger fire extinguishers does not exceed 50 ft (15.25 m). [10:6.3.1.4]

Portable fire extinguishers shall not be installed as the sole protection for flammable liquid hazards of appreciable depth where the surface area exceeds 10 ft² (0.93 m²). [10:6.3.2.1]

Where personnel who are trained in extinguishing fires in the protected hazards are located on the premises and capable of responding immediately, the maximum surface area shall not exceed 20 ft² (1.86 m²). [10:6.3.2.2]

For flammable liquid hazards of appreciable depth, a Class B fire extinguisher shall be provided on the basis of at least 2 numerical units of Class B extinguishing potential per 1 ft² (0.09 m²) of flammable liquid surface of the largest hazard area. [10:6.3.2.3]

AFFF- or FFFP-type fire extinguishers shall be permitted to be provided on the basis of 1-B of protection per 1 ft² (0.09 m²) of hazard. (For fires involving water-soluble flammable liquids, see 5.5.3 of NFPA 10.) [10:6.3.2.4]

Two or more fire extinguishers of lower ratings, other than AFFF- or FFFP-type fire extinguishers, shall not be used in lieu of the fire extinguisher required for the largest hazard area. [10:6.3.2.5]