©Copyright Task Force Tips LLC 2011-2019
LIF-100 October 10, 2019 Rev01
5
8.0 Basic Guide To Foam Selection and Use
Refer to instructions and guidelines from foam manufacturer and the fi re service for specifi c uses and application techniques.
SOLID FUEL - CLASS A
Solid fuel with wettable cellular fi bers that leave ash behind when burned. Examples: wood, paper, straw, brush, etc.
CLASS A
Recommended using class A foam that meets USDA Forest Service “Interim Requirements for Foam for Wildland
Fires, Aircraft or Ground Application” or NFPA 298 Standard on “Foam Chemicals for Wildland Fire Control.”
INVOLVED STRUCTURES
WILDLAND & EXPOSURE PROTECTION
Application rates in gpm/ft2
0.33 for fully involved
Apply as needed for penetration, isolation,
cooling, and smothering
Apply using high fl ow setting for:
- soaking and penetration of fuel
- greater stream reach
Apply using low fl ow setting for:
- greater coverage
- longer lasting
- insulating
LIQUID FUEL - CLASS B
HYDROCARBONS
Fuels that are mostly refi ned from crude oil
or vegetable matter.
Will not mix with water.
POLAR SOLVENTS
A fl ammable liquid that mixes with water. Examples
are alcohols, amines, ethers, esters, aldehydes, and
ketones. In fi refi ghting, any fl ammable liquid which
destroys regular foam is generally referred to as a
polar solvent.
AFFF (Aqueous Film Forming Foam)
FFFP (Film Forming FluoroProtein Foam)
AR-AFFF (Alcohol Resistant AFFF Foam)
PROTEIN
FLUOROPROTEIN
AR-AFFF (Alcohol Resistant Foam)
IGNITED
UNIGNITED
IGNITED
UNIGNITED
Application rates in gpm/ft
2
:
AFFF & FFFP: 0.10
Protein & Fluoroprotein: 0.16
Reapply as needed.
May apply at less than rates for
ignited. Be capable of increasing
to ignited rates if needed.
Application rates:
Use foam manufacturer’s recommendations for
handheld
nozzles.
Apply using
HIGH FLOW setting
for extinguishment
Apply using
LOW FLOW setting
for vapor suppression
Apply using
HIGH FLOW setting
for extinguishment
Apply using
LOW FLOW setting
for vapor suppression
