FOAM Flashcards
Finished foam extinguishes and/or prevents fire by what methods?
- Separtaing
Creates a _____ between the ___ and burning ____
- Cooling
____ the ____ of the ____ and ____ surfaces
- Suppressing
(____) prevents the ____ of additional ____ vapors, access to ____ in the atmosphere, and therefore ___ the possibility of ____ or reignition.
___________________ provide a long lasting foam blankets that are highly desirable in postfire or un ignited spill events?
What are the two categories that mechanical foam is divided into?
- Class __ for ___ combustibles
- Class __ for ___ and combustible ___
What is needed to produce a foam blanket?
___ concentrate, ___ (proportion), ___ (mixed with air) and ___ ____
What is foam concentrate?
___ found in a ___ ___ container ___ the introduction of ____
BARRIER FUEL VAPORS
LOWERS TEMPERATURE . FUEL . ADJACENT
(SMOTHERING) . RELEASE . FLAMMABLE
OXYGEN . REDUCES IGNITION
Uniform-sized bubbles
- Class A for ordinary combustibles
- Class B for flammable and combustible liquids
FOAM . WATER AERATED . MECHANICAL AERATION
LIQUID . FOAM STORAGE BEFORE WATER
What is a foam proportioner?
____ that mixes ___ _____ in the proper ___ with ___
What is foam solution?
____ in the ___ ___ of ___ ___ and ___ before the introduction of ___
What is finished foam?
___ ___ after ___ is introduced into the ___ ___ and after it ___ the ____ or ____
In order for foam concentrates to be effective, the foam must do what?
___ the ___ to which they are ____.
What is foam expansion?
The ___ in ____ of a ____ ____ when it is ___
- ___ is a key characteristic when choosing a ___ for a _____ application
DEVICE FOAM CONCENTRATE . RATIO . WATER
MIXTURE . PROPER RATIO . FOAM CONCENTRATE . WATER . AIR
COMPLETE PRODUCT . AIR . FOAM SOLUTION . LEAVES . NOZZLE AERATOR
MATCH FUEL . APPLIED
INCREASE . VOLUME . FOAM SOLUTION . AERATED
EXPANSION . FOAM . SPECIFIC
What are the factors of varying degrees of foam expansion?
- ___ of ___ ___ used
- ___ proportioning of the ___ ___ and ___
- __ of the ___ ___ (and how much ___ ___ it contains)
- ___ of ____ (___ [water spray]nozzle or ___ nozzle)
What are 3 types of foam concentrate
__ expansion
___ expansion
__ expansion
NFPA ____
Standard for Low-, Medium-, and High-Expansion Foam
What are the air/solution ratios for low, medium, and high expansion foams according to NFPA 11?
Low expansion foam (__:__) __ parts finished foam for __ ___ of foam solution
Medium expansion foam (__:___) to ___:___)
High expansion foam (___:___) to( ____:__)
TYPE . FOAM . CONCENTRATE
ACCURATE FOAM . CONCENTRATE . WATER
QUALITY FOAM . CONCENTRATE . FOAMING CHEMICAL
METHOD . ASPIRATION . FOG . AERATING
LOW
MEDIUM
HIGH
11
Low expansion foam (20:1) 20 parts finished foam for every part of foam solution
Medium expansion foam (20:1 to 200:1)
High expansion foam (200:1 to 1000:1)
What is the storage temperature of foam concentrate according to UL?
No less than 3___ degrees F and no more than ___degrees F
What is the shelf life of foam concentrate?
Optimum storage life can be achieved by following ___ ___. (In excess of ___ years)
NFPA \_\_\_ Standard on fire-fighting foam chemicals for class a fuels in rural, suburban, and vegetated areas
What must be done to prevent corrosion on metal parts, pumps, hose lines, proportioners, and nozzles?
___ with ___ ___ after each use of ___
What hazards do foam concentrate pose?
In full ___ or ___ form; foam concentrate poses ___ health risks to emergency services responders. May be ___ irritating to the ___ and ___. If inhaled or ingested refer to ___
What is a multi agent attack?
(___ units) using foam, a ___ substitute, and a ___ ___ agent together
LESS 35 MORE . 120
manufacturing recommendations . 10
1150
FLUSH . CLEAN . WATER . FOAM
STRENGTH . DILUTED . LITTLE . MILDLY . SKIN . EYES . MSDS
ARFF . FOAM . HALON . DRY CHEMICAL
What is biodegradability?
In either ____ or ____, biodegradability is determined by the ___ at which ____ ___ dissolves or ___ the foam.
This decomposition process results in the consumption of ___. .
Where AFFF concentrate is concerned, what glycol ethers have environmental issues?
_____
______
In the US, class A foam requires approval from what? \_\_ \_\_\_ \_\_\_\_ approvals from the US department of \_\_\_\_ (\_\_\_\_)
What NFPA standard addresses environmental issues regarding class a foam? NFPA \_\_\_
CONCENTRATE . SOLUTION . RATE . ENVIROMENTAL . BACTERIA . DEGRADED
OXYGEN
Butylcarbitol
Perfluorooctylsulfonates
US . Forest Service agriculture (USDA)
1150
What is foam drainage?
Also referred to as ___ drain, ___%, or ___ life; plays a role in finished foam ____.
Bubbles formed start to ___ ____ once’s ___.
Class A foam continues to ___ the ___ as they __
What is one of the measurements for determining the stability of finished foam?
The ___ at which the ___ ___ drains(___ ___)
Short drain time means ___ ___
Long drain time means the foam blanket ___ ___ and provides an ___ foam layer for an __ period of time
QUATER . 25 . QUATER . EFFECTIVENESS
BREAK DOWN APLLIED
WET . FUEL . DRAIN
RATE . FOAM BLANKET . (BREAKS DOWN)
RAPID WETTING
HOLD WATER . INSULATING . EXTENDED
What effect the drainage process?
- fuel _____
- ___ of the fire
- size of the ___ ___
- ____ air temperature and ___
What can class A foam be used with for application?
- ____ foam nozzles
- __ nozzles
- ___ and ___ expansion devices
- ___ ___ foam systems
What is the shelf life of class A foam? \_\_\_\_\_
________ IS Important consideration when establishing class A foam delivery to a fire.
temperature
heat
flame front
ambient . wind
aerating
FOG
MEDIUM . HIGH
COMPRESSED AIR
INDEFINITE
CONSISTENCY
Thick and viscous foams?
__-___ (__-___% or __-__%)
What concentrates are generally thinner? \_\_\_ \_\_\_ \_\_\_ (regular \_\_\_, \_\_\_\_, and \_\_\_\_\_\_\_ foam or class \_\_ foams
AR-AFFF (3-6% or 1-3%)
NON ALCOHOL RESISTANT (AFFF, FFFP FLUOROPROTEIN CLASS A
What is class A foam? Class A foam concentrate is a formulation of \_\_\_\_ surfactants. These \_\_\_ and \_\_\_ surfactants help reduce \_\_\_ surface tension in the foam solution
HYROCARBON .
IONIC NONIONIC
WATER SURFACE
What temperature does class a foam NOT adhere to surfaces? \_\_\_ degrees F
What are the mixing proportions of Class A foam concentrates?
Class A foam concentrates are mixed in proportions of __ to __ percent.
212
0.1 to 1%
____ and ____ provide the advantage that is lost by limited personnel during an initial response.
Class B foam may be applied either with standard ____ nozzle or with __-____ ____ nozzles
______ properties is finished foam are the keys to long-life vapor suppression.
Class A finished foam; CAFS
fog ; air-aspirating foam nozzles
Water-retention
Synthetic foam concentrate is made from a mixture of ______.
Mil-spec listed AFFF is only suitable for use on ___ ____ ___
fluorosurfactants
simple hydrocarbon fuels
The ____ method of proportioning foam uses the pressure energy in the stream of water to induct (draft) foam concentrate into the fire stream.
The ____ method of proportioning foam uses an external pump or head pressure to force foam concentrate into the fire stream at the correct ratio for the flow desired.
eduction (induction)
injection
_____ is the mixing of water with foam concentrate to form a foam solution.
_____ the proportioning ____is a good way to slow foam drainage when dealing with post fire fuel remains or unignited fuel spills.
Proportioning
Doubling the proportioning rate
AR-Fluoroprotein foam concentrate maintains its alcohol-resistive properties for about _____ minutes
The film-forming characteristics of AFFF are adversely affected by fuels in excess is _____°F.
15 minutes
140
