Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Pumping book > Ch.14 > Flashcards

Ch.14 Flashcards

1
Q

Most fire fighting foam concentrates are formulated to mix with __ of water ?

A

94 to 99.9%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 3 foam extinguishing /suppressor methods ?

A

Separating
Cooling
Suppressing or smothering

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Class B fuels are divided into two categories?

A

Hydrocarbons
Polar solvents

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

High expansion foam generator that uses a fan to inject the air into the foam solution as it passes through the unit?

A

Mechanical blower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Foam concentrate that combines the qualities of Fluroprotein foam with those of Aqueous film forming foam?

A

Film forming fluoroprotein foam
(FFFP )

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Generally , 2 cubic feet per minute of air flow per gallon per minute of foam solution produces a dry foam of up to _____ gpm of foam solution ?

A

100 gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the 3 foam expansion levels ?

A

Low- up to 20:1
Medium 20:1 to 200:1
High 200:1 to 1000:1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the 4 basic methods foam is proportioned ?

A

Induction
Injection
Batch mixing
Premixing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

________ such as alcohol , acetone , ketones and esters are known as __________ liquids because they mix with water ?

A

Polar solvents
Miscible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Result of adding air to a foam solution consisting of water and foam concentrate ?

A

Foam expansion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The result of mixing the appropriate amount of foam concentrate with water?

A

Foam solution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Device that injects the correct amount of foam concentrate into the water stream to make the foam solution?

A

Foam proportioner

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Standard on foam chemicals for fires in class A fuels?

A

NFPA 1150

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Chemical change in which a substance breaks down into two or more simpler substances?

A

Decomposition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Expansion rates for most fog nozzles are in the ___ up to ____ range ?

A

2:1 up to 4:1 range

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Method of proportioning foam that uses an external pump or head pressure to force foam concentrate into the fire stream at the correct ratio for flow?

A

Injection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Foam produced by physical agitation of a mixture of foam concentrate, water and air?

A

Mechanical foam

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Class B foam should be stored in cool areas , shelf life for protein based foams is ____ yrs while synthetic foams is ___ to ___ years?

A

10yrs
20 to 25 yrs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Pressure loss or gain created by changes in elevation between the nozzle and the pump?

A

Back pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Mixing of water with an appropriate amount of foam concentrate in order to form a foam solution?

A

Proportioning

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Foam fire suppression agent designed for use on ignited or unignited class B flammable or combustible Liquids ?

A

Class B foam concentrate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

When bulk storage of foam concentrate is required , some fire dept or industrial facilities may specify ______ gallon containers called _______?

A

275 gallon
Totes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Most foam nozzles will produce more stable foam at ____% concentration than a ___% concentration?

A

1%
0.5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

_______ foams derived from animal protein sources such as hooves , horns or feathers?

A

Protein foams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

The concentration for hydrocarbon fuels is normally ___ or ___ % while ___ to ___ % is used for polar solvents?

A

1% or 3%

3% or 6%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Standard for foam expansion ratios?

A

Nfpa 11

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Minimum amount of foam solution that must be applied to an unignited fire , spill or spill fire to either control vapor emissions or extinguish the fire ?

A

Application rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Foam concentrate tanks on municipal fire apparatus generally range from__ to __ gallons , while foam pumpers /tenders may carry ___?

A

20 to 200 gallons
8000 gallons

29
Q

Some master stream foam nozzles are capable of delivering ______ gpm?

A

14,000 gpm

30
Q

Type of foam concentrate proportioner that operates in random with a fire water pump to ensure a proper foam concentrate to water mixture?

A

By pass type balanced pressure proportioner

31
Q

Portable proportioning device that injects a liquid such as a foam concentrate into the water flowing through a hose line?

A

Eductor

32
Q

Class A foams are formulated to be proportioned with in certain limits , these range from as little as ___ to ___?

A

0.1% to 1%

33
Q

______________ are the most common foams in use ?

A

Mechanical foams

34
Q

Raw foam liquid in its storage container before being combined with water and air?

A

Foam concentrate

35
Q

Mixture of foam concentrate and water before introduction of air ?

A

Foam solution

36
Q

Device that injects the correct amount of foam concentrate into the water stream to make the foam solution?

A

Foam proportioner

37
Q

Crude oil , fuel oil , gasoline , benzene and kerosene are all __________ fuels?

A

Hydrocarbon fuels

38
Q

Polar solvent fuels such as Alcohol , acetone , ketones and esters are know as ___________ liquids because they mix with water?

A

Miscible

39
Q

Many modern fuels , including gasoline are blinded with up to __ % solvent additives and should be treated as polar solvents during emergency operations?

A

15%

40
Q

Class B foams are designed solely for use on ____________ fuels and are not effective on ___________ products regardless of the concentration that is applied?

A

Hydrocarbon fuels
Polar solvents

41
Q

As the foam begins to break down , _________ is released , providing a cooling effect on the fuel suppressing the process of heat producing oxidation?

A

Water

42
Q

_____________ is the act of mixing of water with foam concentrate to form a foam solution?

A

Proportioning

43
Q

Foam concentrates are generally intended to be mixed with fresh water or ___________?

A

Saltwater

44
Q

Solid or flexible tube used to transfer foam concentrate from a storage container to the inline eductor or proportioner?

A

Pick up tube

45
Q

The __________ method of proportioning foam uses the pressure of a water stream to Induct (draft) foam concentrate into the fire stream ?

A

Induction

46
Q

Portable proportioning device that injects a liquid , such as foam concentrate into the water flowing through a hose line or pipe?

A

Eductor

47
Q

The __________ method of proportioning foam uses an external pump to force foam concentrate into the fire stream at the proper ratio in comparison to the flow?

A

Injection

48
Q

This mixing method is commonly used with class A foams ?

A

Batch mixing

49
Q

_____________ is a common method of proportioning in which Pre measured portions of water and foam concentrate are mixed in a container?

A

Premixing

50
Q

5 gallon plastic ______ are commonly used containers in many municipal afire depts?

A

Pails

51
Q

Foam concentrate is also available in 55 gallon plastic or plastic lined _________?

A

Barrels

52
Q

When bull storage of foam concentrates is required, some Fire delta or industrial facilities may specify 275 gallon containers called?

A

Totes

53
Q

Class ___ foam is applied to suppress fires involving flammable and combustible liquids?

A

Class B

54
Q

Class B foam concentrates storage requirement for protein based foams is ____ yrs?

A

10 years

55
Q

Synthetic class B foam storage shelf life is ___ to ___ years ?

A

20 to 25 yrs

56
Q

Class B foams are mixed in proportions from __ to __ %?

A

1 to 6 %

57
Q

The concentration for hydrocarbon fuels is normally __ to __ % while
__ to __% is used for polar solvents?

A

1 to 3%
3 to 6%

58
Q

Ability of a foam blanket to resist direct flame impingement such as would be evident in a partially extinguished petroleum fire?

A

Burn back resistance

59
Q

Regular protein foam generally has a good heat stability and _____________?

A

Burn back resistance

60
Q

Fluroprotein foam may be made alcohol resistant with the addition of ammonia salts suspended in organic solvents , the alcohol resistive properties will be effective for approximately ____ min , offering high water retention and resistance to heat?

A

15 mins

61
Q

___________________ is currently the most commonly used synthetic foam concentrate?

A

Aqueous film forming foam (AFFF)

62
Q

When AR-AFFF foam is applied to______________fuels a membrane is created over the fuel ?

A

Polar solvents

63
Q

Type of foam Eductor that is used to supply self educting master stream nozzles , may be located at distances up to 3,000 feet from the nozzle?

A

Jet ratio controller (JRC)

64
Q

A JRC proportions the concentrate at a ____% solution ?

A

66.5%

65
Q

____________________ are one of the most common types of installed proportioners used in modern fire apparatus?

A

Around the pump proportioners

66
Q

__________________ used on large mobile apparatus installations, such as ARFF vehicles , is one of the most accurate methods of foam proportioning?

A

Bypass type balanced pressure proportions

67
Q

This method of foam application is effective for use only on a pool of liquid fuel on the open ground?

A

Roll on method

68
Q

This is the most common method of application for above ground storage tank fires ?

A

Rain down method

69
Q

Class A foam bubbles are filled with ____?
Durable agents form small bubbles filled with ____?

A

Filled with air
Filled with water

Pumping book (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions