Ch 2 Flashcards
(120 cards)
1
Q
How does foam prevent/extinguish fire
A
Separate
Cools
Suppresses
2
Q
How many categories of mechanical concentrators are there
A
2
3
Q
What class is ordinary combustibles
A
A
4
Q
What class is flammible/combustibles
A
B
5
Q
What is needed to produce a foam blanket
A
Foam
Water
Air
Mechanical aeration
6
Q
What solvents can be used on hydrocarbon fires
A
Polar
7
Q
What is a key characteristic when choosing a foam
A
Expansion
8
Q
What refers to an increase volume of solution
A
Expansion
9
Q
What are the 3 types of foam expansion
A
Low
Med
High
10
Q
What is the low ratio
A
Up to 20 parts
11
Q
What is medium ratio
A
20-200 parts
12
Q
What is high ratio
A
200-1000 parts
13
Q
What is the normal storage temp range
A
35-120
14
Q
Who established corrosion rates for class A
A
NFPA
15
Q
What is the NFPA for Class A foam
A
1150
16
Q
Using foam and dry chemicals as a mix is commonly referred to as
A
Multiagents
17
Q
Where are cart mounted units commonly found
A
Industrial facilities
18
Q
What is the primary concern of finished foam
A
Impact
19
Q
What areas should be avoided for discharge
A
Rivers
Lakes
Streams
20
Q
What does decomposition of foam result in
A
Consumption of oxygen
21
Q
What is a measure of determining stability of foam
A
Rate of drain
22
Q
What foam is thick and viscous
A
AR-AFFF
23
Q
What is Clas A foam a formulation of
A
Hydrocarbon surfactants
24
Q
What is best for developing long lasting class A foam
A
Small bubbles of consistent size
25
Class A foam does not adhere to surfaces above what temp
212
26
What percent do most foam nozzles produce stabil foam
1
27
What percent is class A mixed in portions of
0.1-1%
28
What percent are fire attack nozzles at
0.2-0.5
29
What percent for exposure protection
0.5-1%
30
What percent for air aspirating nozzles
0.3-1%
31
What percent for compressed air systems
0.2-0.5%
32
What is the most common agent used at a structure fire
Water
33
What foam is most beneficial for rapid fire extinguishment when water supply is low
Class A
34
What are the 2 types of class B foam
Synthetic
| Protein
35
What type of protein is class B foam made from
Animal
36
What is synthetic class B foam made from
Mixture of flurosurfactants
37
What foam is the exception when being stored together
Milspec
38
How long does it take protein based foam to degrade
2-8 days
39
How long does it take synthetic foam to degrade
20-40 days
40
Above what temp does class B foam break down
150
41
What are examples of polar solvents
Alcohol
Ketones
Esters
42
What is the primary reason class A foams are not recommended on class B fires
No fuel resistance
43
What is class B foam proportioned at
1-6%
44
What percent is used on hydrocarbons
3%
45
What percent is used on polar solvents
6
46
What percent is high expansion foam typically used at
1-2.5%
47
What should the discharge rate of foam be equal to
10% of area of spill
48
What type of foam is well suited for sub surface injection
Fluroprotein
49
How long does fluroprotein foam maintain its alcohol resistance
About 15
50
What type of foam is completely synthetic
AFFF
51
What is the storage temp range of AFFF *****
25-120°
52
What is the temp AFFF is affected by
Above 140
53
What percent is AR-AFFF used at for depths less than 1 inch
1%
54
What percent is AR-AFFF used at for polar solvents more than 1 inch
3%
55
What concentrate is NOT designed for premixing
AR-AFFF
56
Where is high expansion foam nit recommended for use
Outside
57
What concentrate is meant for use on class A or B fires
Emulsifiers
58
What method uses a foam eductor
Induction
59
What method uses a pump or bladder
Injection
60
What depth emulsifiers be used
Less than 1in thick
61
What system is uses on apparatuses
Injection
62
What is the simplest form of mixing foam
Batch mix
63
What form is used to mix within apparatus
Batch mix
64
How many times can a premix be used
1
65
What tanks are foam friendly
Polly
Fiberglass
Stainless steel
66
What is the NFPA for apparatus
1901
67
How much does foam weigh per gallon
9lbs
68
How many gallons are in bulk containers
250-450
69
What is the tank capacity on tenders
1500-8000
70
What is the tank capacity on pumpers
20-200
71
What is the tank capacity on ARFF
Up to 600
72
What is the tank capacity on fixed mount tanks
In excess of 3000
73
What is typically a viscous foam
AR-FFFP
74
What is viscosity affected by
Temp
75
Polar solvent foam will work on what other type fires
Hydrocarbon
76
Fluroprotein foam will not extinguish what type of fire
Polar solvent
77
What foams are used for multiagent attacks
AFFF
| FFFP
78
What foams have a lethal affect on fish
Class A
79
What class of foam continues to wet as it drains
A
80
What is high expansion foam used for
Flooding confined spaces
81
What is the amount of liquid that drains from the bubble mass affected by
Expansion Ratio
82
What drainage rate does wet, class A foam have
Fast
83
What drainage rate does dry class A foam have
Slow
84
What 2 adjustments are strongly needed for medium finished foam
Air
| Concentrate
85
What type of materials absorb water
Fibrous
86
What nozzle is used to apply AFFF and FFFP concentrates
Fog nozzle
87
What fuels is Mil-spec foams only uses on
Simple Hydrocarbon
88
What type of foam does not reduce oxygen levels
Synthetic
89
How do AR foams protect the finished foam
Creates a Membrane between the fuel and finished foam
90
What foams are referred to as smart foams
AR
91
Gasoline blended with above what percent of oxygen or ethanol require AR foam
10%
92
What is the proper percent for Class B foam regardless of which type of fuel they are used on
3%
93
What foams are virtually nonexistent
Protein
94
What foam is non compatable with dry extinguishing agents
Protein
95
What foam is only used on hydrocarbon fires
Protein
96
What foam flows across fuel surfaces rapidly
Fluroprotein
97
What percent is FFFP foam used on hydrocarbon fuels
3%
98
What percent is FFFP used on polar solvent fuels
6%
99
What is created when AR-AFFF is applied to polar solvent fuels
A membrane
100
What is vapor-mitigating foam designed for sole use on
Unignited spills of hazmat
101
When is a slow draining foam blanket desired
Long term vapor suppression
102
What foam is commonly batch mixed
Class A
103
How does alcohol resistance foam protect the finished foam
Providing a membrane
104
What is new multipurpose foam eductucted at
3%
105
What is the application rate for a spill that is 1000 sqft
200gpm
106
What light hydrocarbons can AR-AFFF be injected into
Gasoline
Kerosene
Jet fuel
107
What is added to class A foam that improves absorption
Nonfoaming
Ionic
Nonionic surfactants
108
Where is regular protein found
Fixed fire suppression systems
109
What are the types of protein used in foam
Hooves
Horn
Feathers meal
110
What is the drop test for a barrel
5ft
111
What is the drop test for a pail
4ft
112
What concentrates have temp storage range of 35-120
UL listed
113
What is a Halon substitute
Foam
114
What foams tend to be fast drainers that spread rapidly across liquid fuel surfaces
AFFF
| FFFP
115
What surfaces over 212 does class A foam not adhere to
Vertical
116
What conditions strongly influence the course of a wildland fire
Density
Composition
Climate
Moisture
117
What devices is 1% AR foam applied with
Type 3
118
What is fluoroprotein foam a combination of
Protein
| Synthetic
119
What is the most commonly used foam
AFFF
120
What concentrate has more film forming foam
Mil-spec
