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Fire Extinguishers. NFPA 1910 Requirements. Dry Chemical 80B:C CO2 10B:C 1 2 ½ water extinguisher. NFPA 10. Standards for portable fire extinguishers. Class A. Normal Combustables 1-A through 40-A 1-A= 1 ¼ gal. of water 2-A = 2 ½ gal.of water Tested with wood crib and pannel

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nfpa 1910 requirements
NFPA 1910 Requirements
  • Dry Chemical 80B:C
  • CO2 10B:C
  • 1 2 ½ water extinguisher
nfpa 10
NFPA 10
  • Standards for portable fire extinguishers
class a
Class A
  • Normal Combustables
  • 1-A through 40-A
    • 1-A= 1 ¼ gal. of water
    • 2-A = 2 ½ gal.of water
  • Tested with wood crib and pannel
  • Tested by expert or non-expert
class b
Class B
  • Flammable Liquids
  • 1-B through 640-B
    • Approximate square footage of fire a non-expert can extinguish
  • Test on pan with n-heptane
  • Rating is 40% of what an expert can extinguish
class c
Class C
  • Essentially an electrified class A or B
  • No fire test conducted, only non-conductivity tests
class d
Class D
  • No numerical rating scale
  • Extinguishing agents may handle only a single type of class d fire
label information is entered like this
Label information is entered like this.

Label Says:

A-4 20B:C

Where might you use it?

What does the label mean?

pump tank water extinguishers
Pump-Tank Water Extinguishers
  • Often called a backpack or indian pump
  • Class A fires only
  • Used for grass fires and minor overhaul operations only
  • 1-5 gal
  • Need freeze protection
stored pressure water
Stored Pressure Water
  • Pressurized with O2 or Nitrogen
  • Class A fires only
  • Grass fires, overhaul
  • 1.5 - 2.5 gal
  • Foam can be added to water
  • Needs freeze protection
aqueous film forming foam afff
Aqueous Film Forming Foam (AFFF)
  • Good for A and B fires
  • Most are 2.5 gal.
  • Air aspirating nozzle (for better foam)
  • Apply as a blanket which will seal out O2
  • AFFF helps water penetrate better
  • Won’t work on water soluble liquids
  • Works well on pools of class B
dry chemical
Dry Chemical
  • (Multipurpose) ABC or (Ordinary) BC only
  • 2.5 to 30 lbs
  • Don’t confuse with dry powder
  • No need for freeze protection
  • Many agents are used
co2 extinguisher
CO2 Extinguisher
  • Class B and C
  • 2-20 lbs
  • CO2 discharged through horn (don’t touch it)
  • Creates “snow” that sublimes and smothers fire
  • No “film” so reignition is a danger
halon
Halon
  • Halon 1211
    • Not really sure how it works
  • Halon 1301
pass system
PASS System

All extinguishers are used essentially this way

http://www.dm.af.mil/fire/extinfo.htm#Classes of Fire

special considerations
Special Considerations
  • AFFF
    • careful not to disturb the foam blanket
  • Dry Chemical
    • spray at base of the fire
  • CO2
    • Sweep across entire fuel surface