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ARRF > Chapter 6- Extingushing Agents > Flashcards

Chapter 6- Extingushing Agents Flashcards

1
Q

Extinguishing agents such as dry chemical, halons, and halon replacements are commonly used in aircraft firefighting:

A

Auxiliary agents

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2
Q

Aircraft firefighting extinguishing agents that are designed for mass application an rapid knockdown of a fire are known as:

A

Primary agents

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3
Q

What is the most common extinguishing agent used in the fire service:

A

Water

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4
Q

What must be generally added to water at large air craft fuel fires:

A

Foaming agents

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5
Q

When water is the only available extinguishing agent to combat a spilled fuel fire,it should be applied in a:

A

Fog Pattern

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6
Q

What is an inherent hazard of water:

A

Steam

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7
Q

Water is an excellent:

A

Conductor of electricity

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8
Q

This method of extinguishing fire with foam prevents air an flammable vapors from combining:

A

Smothering

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9
Q

This method of extinguishing fire with foam prevents the release of flammable vapors:

A

Suppressing

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10
Q

Foam must be reapplied:

A

As necessary

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11
Q

To produce quality firefighting foam you need:

A

Foam concentrate,water, air, mechanical agitation

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12
Q

This term refers to the raw foam liquid as it rests in its storage container before the introduction of water and air:

A

Foam concentrate

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13
Q

This term refers to a device that introduces foam concentrate into the water stream in specific amounts to make the foam:

A

Foam proportioner

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14
Q

This term refers to a properly proportioned mixture of foam concentrate an water before the introduction of air

A

Foam solution

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15
Q

This term refers to the completed topic after air is introduced into the foam solution:

A

Finished foam:

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16
Q

A characteristic of polar solvents

A

Flammable

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17
Q

The characteristic of a hydrocarbon fuel:

A

Float on water, petroleum-based, Hydrophobic

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18
Q

Example of hydrocarbon fuels are:

A

Crude oil, fuel oil, jet fuel, diesel

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19
Q

Example of polar solvents are liquid fuels such as:

A

Acetone, alcohol, ketones, esters, lacquer thinner

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20
Q

Class B foams designed solely for hydrocarbon fires will not

A

Will not extinguish pilot solvent fires regardless of the concentration used

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21
Q

This foam concentrate is essentially a wetting agent that reduces the surfaces tensions of water an allows it to soak into combustible materials more easily than plain water:

A

Class A foam

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22
Q

This foam concentrate is used to extinguish fires involving flammable an combustible liquids

A

Class B foam

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23
Q

Class B foams are mixed in proportions from

A

1% to 6%

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24
Q

This term refers to the increase in volume of a foam solution when it’s aerated

A

Foam expansion

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25
Q

This foam is the most commonly used foam used at airport today

A

Aqueous film forming foam (AFFF)

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26
Q

This type of foam has an air/solution ratio up to 20 parts finished foam for every part of foam solution

A

Low expansion foam

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27
Q

This type of foam is recommended for extinguishing hydrocarbon fuel fires

A

Aqueous film forming foam (AFFF)

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28
Q

Aqueous film forming foam has a

A

Low viscosity which quickly spreads across the fuel surface to form a vapor-suppressing film

29
Q

The following foam has a detergent base an low water content

A

High-expansion foams

30
Q

A basic application of high-expansion foam is:

A

Fixed extinguishing systems for industrial uses

31
Q

This foam concentrate storage method consist of a large plastic tank inside metal pallets

A

Intermediate Bulk Containers

32
Q

The following foam concentrate storage method consist of 5 gallon containers used for shipping an storing foam concentrate

A

Pails

33
Q

The following foam concentrate storage method eliminates the need to use another method of storage container:

A

Apparatus tanks B

34
Q

The FAA recommends that ARFF apparatus foam systems be tested using a refractomerteror conductivity meter at least

A

Twice a year

35
Q

The following method of proportioning foam uses the pressure energy in the stream of water to induct foam concentrate into the fire stream

A

Induction

36
Q

This method of proportioning foam uses an external pump or water pressure to force foam concentrate into the fire stream at the correct ratio In comparison to the flow

A

Injection

37
Q

This method of foam proportioning consists of simply pouring an appropriate amount of foam concentrate into a tank of water

A

Batch mixing

38
Q

This method of proportioning foam mixes pre measured portions of water an foam concentrate in a container

A

Pre mixing

39
Q

This method of proportioning foam is the simplest means of proportioning foam

A

Batch mixing

40
Q

This following portable foam proportioner is designed to be either directly attached to the pump panel discharge or connected at some point in the hose lay

A

In-line foam eductors

41
Q

This portable foam proportioner is used where flows in excess of 350 gpm are required

A

Self-educting master stream foam nozzles

42
Q

This apparatus-mounted foam proportioning systems consists of a small water line connected from the discharge side of the pump back to the intake side of the pump

A

Around the pump proportioners

43
Q

The following apparatus mounted foam proportioning system has the advantage of being maintained in a ready to pump condition an requiring no flushing after use

A

Variable flow demand type balanced pressure proportioning system

44
Q

The following apparatus mounted foam proportioning system has a concentrate line connected to each fire pump discharge outlet

A

Bypass-type balanced pressure proportioner

45
Q

The following apparatus mounted foam proportioning system has the advantages of being able to simultaneously discharge foam from some outlets an plain water from others

A

Bypass type balanced pressure proportioners

46
Q

The following apparatus mounted foam proportioning system has the advantage of being able to automatically adjust to changes in water flow when nozzles are either opened

A

Variable flow variable rate direct injections systems

47
Q

The following apparatus mounted foam proportioning system has the advantage of being able to have the nozzles either above or below the pump, without affecting the foam proportioning

A

Variable flow variable rate direct injection system

48
Q

The following foam generating system introduced compressed air into the foam solution prior to discharge into hose line

A

High energy foam generating systems

49
Q

The two most common types of hand line nozzles used by ARFF firefighters are Standard fog nozzles and :

A

Air aspirating foam nozzles

50
Q

Large pre plumbed master stream appliances connected directly to a pump that is mounted on a pumper, a tar for or some ARFF apparatus are

A

Turret nozzles

51
Q

What is an operating characteristic of non aspirating nozzles

A

Can generate a wide fog pattern

52
Q

What is an operating characteristic of aspirating nozzles

A

Restricts reignition and burn back

53
Q

This method foam application directs the foam stream on the ground near the front edge of a burning liquid pool

A

Roll on method

54
Q

The following method of foam application may be employed when an elevated object is near or within the area of a burning pool of liquid

A

Bank down method

55
Q

This method of foam application usually involves the foam stream being applied through a bumper turret

A

Base of the fire method

56
Q

This following method of foam application is the primary manual application technique used on above ground storage tanks fire

A

Rain fall (rain down) method

57
Q

The following method of foam application extends the reach of the foam stream during initial approach an application

A

Rainfall (rain down) method

58
Q

This action should be performed after dry chemicals have been used to accomplish a quick knock down of an aircraft fire

A

Apply a blanket of foam

59
Q

The use of dry chemical,water, and AFFF is referred to as

A

Wet chemical

60
Q

The following dry chemical extinguisher is recommended for fighting aircraft engine fires

A

Regular B:C-rated dry chemical extinguishers

61
Q

The pressurized gas in dry chemical extinguishers is

A

Nitrogen or carbon dioxide

62
Q

The following are two basic designs for handled an wheeled dry-chemical extinguishers

A

Stored pressure an cartridge operated

63
Q

The following is the dry-chemical agent of choice for multiagent applications because of its comparability with AFFF

A

Purple K

64
Q

All dry-chemical agents are

A

Non conductive

65
Q

The following is the most common method of application for dry chemical

A

Dispense using a handline stored at some position on the vehicle

66
Q

Clean agents are designed to

A

Leave little if no residue

67
Q

The following method of application for dry chemical allows the dry chemical to stay inside the water stream of the turret, greatly extending the effectiveness of the agent

A

Water stream injection

68
Q

The following method of application for application for dry chemical involves the manufacturer mounting an independent dry chemical nozzle directly over the water/foam nozzle on the roof or bumper turret

A

Piggybacking

ARRF (18 decks)

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