Fire Extinguisher Types - NFPA
Breaking down the different types of fire extinguishers by their extinguishing agent.

Fire extinguishers | NFPA
Install fire extinguishers close to an exit and keep your back to a clear exit when you use the device so you can make an easy escape if the fire cannot be controlled. If the room fills with smoke, leave immediately. Know when to go. Fire extinguishers are one element of a fire response plan, but the primary element is safe escape.

Fire Extinguisher Placement Guide
RELATED: Read more about Class K fire extinguishers. The distribution of portable fire extinguishers is a balance between having an extinguisher nearby when you need it but not being overly burdened by the cost and maintenance of having excessive extinguishers. Let us start off with what NFPA 10, Standard for Portable Fire Extinguishers, requires.

Guide to Fire Extinguisher ITM | NFPA
Fire extinguishers need to have an external maintenance examination conducted on a yearly basis, at the time of hydrostatic test, or when specifically indicated by an inspection discrepancy. Extinguishers need to have an internal examination conducted at anywhere from 1-6 year intervals depending on the type of extinguisher.

Location and Placement Requirements for Portable Fire Extinguishers - NFPA
In this case one would need a minimum of 12 fire extinguishers to cover an area of 67,000ft 2 (67,000ft 2 /6,000ft 2 = 11.2). In addition to the requirements in table 13.6.3.2.1.1, fire extinguishers for class A hazards must be locates as to not exceed a 75ft travel distance. Class B. Required where there is a potential for flammable liquids fires.

NFPA 10 Standard Development
NFPA 10 provides requirements to ensure that portable fire extinguishers will work as intended to provide a first line of defense against fires of limited size. Current Edition: 2022 Purchase Options

Fire Extinguisher Ratings - NFPA
Extinguishers are given a letter rating and some also have a number designation, which come from being tested to UL 711, Rating and Fire Testing of Fire Extinguishers. The letter on an extinguisher rating corresponds to the type of fire that extinguisher can put out while the number correlates to the extinguishing potential.

NFPA Fact Sheet | Fire Extinguisher Location and Placement
Read this NFPA fact sheet on fire extinguisher location and placement for code officials that use NFPA 10, Standard for Portable Fire Extinguishers.

Portable Fire Extinguisher Location - NFPA
The provisions for selection, installation, inspection, maintenance, recharging and testing of portable fire extinguishers all resides in NFPA 10 and is extracted info the Fire Code. However, within the section extracted from NFPA 10 is Section 13.6.1.2 which determines first where fire extinguishers are required, and is governed by NFPA 1:

What Is a Class K Fire Extinguisher? - NFPA
In order for a fire extinguisher to obtain a rating for Class K fires it needs to pass certain tests in accordance with UL 711, Standard for Safety for Rating and Fire Testing of Fire Extinguishers. While there are a lot of details that need to go into the testing, the test is basically to see if the fire extinguisher can suppress a vegetable ...