Chapter 15 Foam Equipment and Systems Flashcards
1
Q
Which of the following is NOT needed to produce quality fire fighting foam?
A
A. Air
B. Water
C. Vacuum pumps*
D. Mechanical aeration
2
Q
Which of the following is a Class B hydrocarbon?
A
A. Alcohol
B. Acetone
C. Crude oil*
D. Lacquer thinner
3
Q
Which of the following is a Class B polar solvent?
A
A. Fuel oil
B. Gasoline
C. Benzene
D. Ketones*
4
Q
T or F: Class B foams designed solely for hydrocarbon fires will not extinguish polar solvent fires.
A
True
5
Q
T or F: Many foams intended for polar solvents may be used on hydrocarbon fires.
A
True
6
Q
Most fire fighting foam concentrates are intended to be mixed with:
A
94 to 99.9 percent water.
7
Q
Which foams are not proportioned as other foams?
A
Class A foams
8
Q
Dry, thick foam suitable for exposure protection and fire breaks requires a:
A
higher percentage of foam.
9
Q
Wet (thin) foam that rapidly sinks into a fuel’s surface requires a:
A
lower percentage of foam.
10
Q
Using a foam proportioner that is not compatible with the delivery device can result in:
A
unsatisfactory foam or no foam at all.
11
Q
Which of the following storage methods are usually 5-gallon (20 L) sized and made of plastic?
A
A. Pails*
B. Totes
C. Barrels
D. Apparatus tanks
12
Q
Which of the following storage methods are found on municipal and industrial pumpers, foam tenders, and ARFF apparatus?
A
A. Pails
B. Totes
C. Barrels
D. Apparatus tanks*
13
Q
Which of the following storage methods are usually 55-gallon (220 L) sized and made of plastic?
A
A. Pails
B. Totes
C. Barrels*
D. Apparatus tanks
14
Q
Which of the following storage methods are found in 275-gallon (1 100 L) sizes and are used for bulk storage of foam concentrate?
A
A. Pails
B. Totes*
C. Barrels
D. Apparatus tanks
15
Q
Which of the following storage methods eliminate the need to use separate pails or barrels?
A
A. Pails
B. Totes
C. Barrels
D. Apparatus tanks*
16
Q
Which of the following storage methods are perhaps the most common containers used by the municipal fire service?
A
A. Pails*
B. Totes
C. Barrels
D. Apparatus tanks
17
Q
Which of the following storage methods are most common in industrial applications?
A
A. Pails
B. Totes
C. Barrels*
D. Apparatus tanks
18
Q
Which of the following storage methods range from 20 to 200 gallons (80 L to 800 L)?
A
A. Pails
B. Totes
C. Barrels
D. Apparatus tanks*
19
Q
Which of the following storage methods are durable and not affected by the corrosive nature of foam concentrates?
A
A. Pails*
B. Totes
C. Barrels
D. Apparatus tanks
20
Q
Which of the following storage methods should be equipped with a pressure vacuum vent?
A
A. Pails
B. Totes
C. Barrels
D. Apparatus tanks*
21
Q
Which of the following would NOT be a typical use for Class A foam?
A
A. Structure fire
B. Coal mine fire
C. Flammable liquid fire*
D. Tire storage fire
22
Q
Class A foams should be used on:
A
Class A fuels only.
23
Q
Class A foam has a shelf life of as much as ___ years if properly stored.
A
20
24
Q
T or F: Class A foam is safe to be applied directly into bodies of water.
A
False
25
Which of the following devices is NOT commonly used with Class A foams?
A. Fog nozzles
B. Straight stream nozzles*
C. Aerating foam nozzles
D. Compressed-air foam systems
26
Which of the following would be a typical use for Class B foam?
A. Structure fire
B. Coal mine fire
C. Wildland fire
D. Combustible liquid fire*
27
Which of the following may be used to apply Class B foam?
A. Fog nozzles*
B. Straight stream nozzles
C. Aerating foam nozzles
D. Compressed-air foam systems
28
Which of the following are considered safer for the environment?
A. All Class A foams
B. All Class B foams
C. Protein-based Class B foams*
D. Synthetic-based Class B foams
29
Protein-based foams have a shelf life of about ___ years.
10
30
Synthetic-based foams are made from:
fluorosurfactants.
31
Which of the following is the most commonly used foam today?
A. Fluoroprotein foam
B. Regular protein foam
C. Aqueous film forming foam*
D. Film forming fluoroprotein foam
32
Which of the following has a detergent base?
A. Fluoroprotein foam
B. Regular protein foam
C. High expansion foam*
D. Aqueous film forming foam
33
Which of the following is derived from naturally occurring sources of protein such as hoof, horn, or feather meal?
A. Fluoroprotein foam
B. Regular protein foam*
C. Aqueous film forming foam
D. Film forming fluoroprotein foam
34
Which of the following is based on fluoroprotein foam technology with AFFF capabilities?
A. Fluoroprotein foam
B. High expansion foam
C. Aqueous film forming foam
D. Film forming fluoroprotein foam*
35
Which of the following degrades faster in storage than synthetic foam?
A. Fluoroprotein foam
B. Regular protein foam*
C. Aqueous film forming foam
D. Film forming fluoroprotein foam
36
Which of the following has a low water content, which minimizes water damage?
A. Fluoroprotein foam
B. High expansion foam*
C. Aqueous film forming foam
D. Film forming fluoroprotein foam
37
Which of the following is derived from protein foam concentrates to which fluorochemical surfactants are added?
A. Fluoroprotein foam*
B. Regular protein foam
C. High expansion foam
D. Film forming fluoroprotein foam
38
Which of the following is completely synthetic?
A. Fluoroprotein foam
B. Regular protein foam
C. High expansion foam
D. Aqueous film forming foam*
39
Which of the following is rarely used in the fire service today?
A. Fluoroprotein foam
B. Regular protein foam*
C. Aqueous film forming foam
D. Film forming fluoroprotein foam
40
Which of the following provides a strong “security blanket” for long-term vapor suppression?
A. Fluoroprotein foam*
B. Regular protein foam
C. Aqueous film forming foam
D. Film forming fluoroprotein foam
41
Which of the following are the most basic type of foam proportioner?
A. Jet ratio controllers
B. In-line foam eductors*
C. Foam nozzle eductors
D. Self-educting master stream foam nozzles
42
Which of the following are used where flows in excess of 350 gpm (1 400 L/min) are required?
A. Jet ratio controllers
B. In-line foam eductors
C. Foam nozzle eductors
D. Self-educting master stream foam nozzles*
43
Which of the following operate on the same principle as the in-line eductor, but the eductor is built into the nozzle rather than into the hoseline?
A. Jet ratio controllers
B. In-line foam eductors
C. Foam nozzle eductors*
D. Self-educting master stream foam nozzles
44
Which of the following are a type of in-line eductor that allow the foam concentrate supply to be as far away as 3,000 feet (900 m) from the self-educting master stream foam nozzle?
A. Jet ratio controllers*
B. In-line foam eductors
C. Foam nozzle eductors
D. Self-educting master stream foam nozzles
45
Which of the following compromise firefighter safety?
A. Jet ratio controllers
B. In-line foam eductors
C. Foam nozzle eductors*
D. Self-educting master stream foam nozzles
46
Which of the following are designed to be either directly attached to the pump panel discharge or connected at some point in the hose lay?
A. Jet ratio controllers
B. In-line foam eductors*
C. Foam nozzle eductors
D. Self-educting master stream foam nozzles
47
Which of the following allow an elevation change of up to 50 feet (15 m)?
A. Jet ratio controllers*
B. In-line foam eductors
C. Foam nozzle eductors
D. Self-educting master stream foam nozzles
48
With in-line foam eductors, the nozzle and in-line eductor must have the same:
rating in gpm (L/min).
49
Which of the following is the simplest means of proportioning foam?
A. Batch mixing*
B. Around-the-pump proportioners
C. Bypass-type balanced pressure proportioners
D. Variable-flow variable-rate direct injection systems
50
Which of the following include a special version called a bypass proportioner that is used to reduce the friction loss across the eductor?
A. Batch mixing
B. Installed in-line eductor systems*
C. Bypass-type balanced pressure proportioners
D. Variable-flow variable-rate direct injection systems
51
Which of the following can be done at any time, anywhere, and with any equipment?
A. Batch mixing*
B. Installed in-line eductor systems
C. Bypass-type balanced pressure proportioners
D. Variable-flow variable-rate direct injection systems
52
Which of the following CANNOT be used with alcohol-resistant foam concentrates?
A. Batch mixing
B. Installed in-line eductor systems
C. Variable-flow variable-rate direct injection systems*
D. Variable-flow demand-type balanced pressure proportioners
53
Which of the following are controlled by monitoring the water flow and controlling the speed of a positive displacement foam concentrate pump?
A. Batch mixing
B. Installed in-line eductor systems
C. Bypass-type balanced pressure proportioners
D. Variable-flow variable-rate direct injection systems*
54
Which of the following consist of a small return (bypass) water line connected from the discharge side of the pump back to the intake side of the pump?
A. Batch mixing
B. Around-the-pump proportioners*
C. Bypass-type balanced pressure proportioners
D. Variable-flow variable-rate direct injection systems
55
Which of the following are one of the most accurate methods of foam proportioning?
A. Batch mixing
B. Around-the-pump proportioners
C. Bypass-type balanced pressure proportioners*
D. Variable-flow variable-rate direct injection systems
56
Which of the following are most commonly used in large-scale mobile apparatus applications such as airport crash vehicles and refinery fire fighting apparatus?
A. Around-the-pump proportioners
B. Bypass-type balanced pressure proportioners*
C. Variable-flow variable-rate direct injection systems
D. Variable-flow demand-type balanced pressure proportioners
57
Which of the following have foam concentrate supplied from either pickup tubes inserted into 5 gallon (20 L) pails or from foam concentrate tanks installed on the apparatus?
A. Installed in-line eductor systems*
B. Around-the-pump proportioners
C. Bypass-type balanced pressure proportioners
D. Variable-flow variable-rate direct injection systems
58
Which of the following use the same principles of operation as do portable in-line eductors, but are attached to the apparatus pumping system?
A. Batch mixing
B. Installed in-line eductor systems*
C. Variable-flow variable-rate direct injection systems
D. Variable-flow demand-type balanced pressure proportioners
59
Apparatus equipped with these proportioners have a foam concentrate line connected to each fire pump discharge outlet.
Bypass-type balanced pressure proportioners
60
Which of the following operate off power supplied form the apparatus electrical system?
A. Installed in-line eductor systems
B. Around-the-pump proportioners
C. Bypass-type balanced pressure proportioners
D. Variable-flow variable-rate direct injection systems*
61
Which of the following are rated for a specific flow and should be used at this rate?
A. Installed in-line eductor systems
B. Around-the-pump proportioners*
C. Bypass-type balanced pressure proportioners
D. Variable-flow variable-rate direct injection systems
62
Which of the following have a variable-speed mechanism that drives a foam concentrate pump?
A. Batch mixing
B. Installed in-line eductor systems
C. Variable-flow variable-rate direct injection systems
D. Variable-flow demand-type balanced pressure proportioners*
63
Which of the following is only used with regular AFFF and Class A concentrates?
A. Batch mixing*
B. Installed in-line eductor systems
C. Variable-flow variable-rate direct injection systems
D. Variable-flow demand-type balanced pressure proportioners
64
Which of the following is “any nozzle that one to three firefighters can safely handle and that flows less than 350 gpm (1 400 L/min)”?
A. Handline nozzle*
B. Smoothbore nozzle
C. Master stream foam nozzle
D. High-expansion foam generator
65
Which portable foam application devices are limited to Class A, CAFS applications?
Smoothbore nozzles
66
Which portable foam application devices break the foam solution into tiny droplets and use the agitation of water droplets moving through air to achieve the foaming action?
Fog nozzles
67
Which portable foam application devices CANNOT be used with protein and fluoroprotein foams?
Fog nozzles
68
Which portable foam application devices induct air into the foam solution by a venturi action?
Air-aspirating foam nozzles
69
Which portable foam application devices are the only types of nozzles that can be used with protein and fluoroprotein concentrates?
Air-aspirating foam nozzles
70
Which portable foam application devices are required to deliver adequate amounts of foam on large-scale flammable and combustible liquid fires?
Master stream foam nozzles
71
For high-expansion foam, the air content ranges from:
20:1 to 1,000:1
72
The air-aspirating type of medium- and high-expansion foam generators are very similar to other foam-producing nozzles except that they are:
much larger and longer.
73
A mechanical blower foam generator is limited to:
High-expansion foam
74
T or F: The primary concern to the environment of Class A and Class B foams is the impact of finished foam after it has been applied to a fire or spill.
True
75
T or F: The biodegradability of these foams in either solution or concentrate is determined by the rate at which environmental bacteria dissolve or degrade the foam.
True
76
T or F: The decomposition process of these foams results in the production of oxygen.
False
77
T or F: It is appropriate for foam concentrates, solutions, or finished foam to be discharged into any body of water.
False
78
T or F: Environmental issues for AFFF concentrate include chemicals such as glycol ethers.
True
79
Durable agents retain their fire retarding properties:
a longer time than Class A foam.
80
Which of the following is NOT another name for durable agents?
A. Gelling agents
B. Fire blocking gels
C. Film forming gels*
D. Aqueous fire fighting gels
81
Durable agents are used in the same way as ___, but are chemically and structurally quite different.
Class A foams
82
Durable agents are:
water-absorbent polymers.
83
Durable agents are considerably ___ than Class A foams.
more expensive
84
Durable agents are normally applied at a ratio of ___ for fire extinguishment.
1%
85
Durable agents are normally applied at ___ for line construction.
1½ to 2%
86
Durable agents are normally applied at ___ for structure protection.
2 or 3%
