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Engine Company Fire Ground Operations > 9 Master Stream Appliances > Flashcards

9 Master Stream Appliances Flashcards

1
Q

During large fire incidents where should apparatus be located

A

Should be positioned so that radiant heat convected heat burning embers or structural collapse will not affect the safety of firefighters

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2
Q

When shouldn’t master stream appliances be placed in service defensively

A

While an offense of interior attack is being conducted

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3
Q

When our master stream appliances used

A

When handheld hose lines are ineffective they are used for fire attack exposure protection and back up

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4
Q

To be effective master streams require flows of what range

A

350 to 2000 gallons per minute

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5
Q

What are the three types of master stream appliances

A

Portable appliances, fixed appliances, elevated master streams

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6
Q

Portable master stream appliances are often referred to as

A

Deck guns or monitors

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7
Q

A portable master stream appliance moves were shifts from its position with might cause it

A

The nozzle is operating at too low of

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8
Q

Safety locks for nozzle angle must be manually released before the novel can you lower below what degree

A

35°

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9
Q

Which type of master stream appliance this placed on the ground and supplied with water from one or more hose line

A

A portable master stream appliance

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10
Q

Ariel pre-pipe water system on and Ariel with 110 feet or less in reach must be capable of flowing what

A

1000 gallons per minute at 100 psi nozzle pressure at full elevation and extension

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11
Q

Inlet size for an aerial waterway must be a minimum of what size

A

4 inch minimum inlet

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12
Q

The most common sizes of smooth for tips for master stream

A

1 3/8, 1 1/2, 1 3/4, 2 inch

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13
Q

Smooth bore master stream tips operate at what pressure

A

80 psi

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14
Q

An inch and three eights smooth for tip will flow how many gallons per minute

A

500 GPM

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15
Q

An inch and a half smooth for tip will follow how many GPM

A

600 GPM

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16
Q

The inch and three-quarter tip will flow how many GPM

A

800 GPM

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17
Q

The 2 inch tip will flow how many GPM

A

1000 GPM

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18
Q

Which size tip can be used on the master stream appliance when there is not enough water volume to feed the common sizes

A

Inch and a quarter tip

19
Q

The inch and a quarter tip at 80 PSI on a master stream will flow how many GPM

A

400 GPM

20
Q

Master stream spray nozzles operate at what PSI

A

100 psi

21
Q

Master stream spraying all souls generally range what gallons per minute

A

300 to 1250 GPM

22
Q

Water supply must be sufficient for the size small for tip selected. If not what can be done

A

Use a smaller size tip that suits the water supply

23
Q

What is the friction loss in a master stream device

A

20 to 25 pounds

24
Q

When using smaller supply lines what is the maximum suggested a length of hose to be used between pumper and master stream

A

100 feet

25
Q

What are the four recommendations supply master streams

A

Locate a pumper any hydrant for suitable water support, use LDH for adequate number of small supply lines, use LDH or enough supply lines while relay pumping, maintain a 100 foot minimum with some small supply lines LDH will be longer

26
Q

A great deal of extra pressure will do what to a solid stream of a master stream

A

Break up while leaving the nozzle making it an effective

27
Q

Which stream nozzle is most effective for fire attack when using the master stream appliance

A

Solid stream nozzle, it will penetrate further into the building covering more area of fire

28
Q

If distance is appropriate and the wind will not affect the stream which nozzle may be more effective for exposure protection with master streams

A

Spray nozzle

29
Q

Spray nozzle Street streams lose its effectiveness if applied over distance true/false

A

True

30
Q

If Spraying nozzles on master streams cannot be positioned close enough to the fire to be effective what should be done

A

Solid stream nozzle should be used

31
Q

While directing the stream into a building how should the appliance be positioned for the most effectiveness

A

Should be moved horizontally back-and-forth across the fire area, And up-and-down so that reaches the full depth of the fire area

32
Q

True/false master streams can be left unattended indefinitely

A

False, they cannot

33
Q

Why might a master stream not seem to be having any affect on a fire

A

It could be positioned improperly

34
Q

When the target is not visible through heavy smoke what signs are indications that the master stream is not adjusted properly or entering the building

A

The sound of water or stream hitting the building, heavy water run off

35
Q

Steam and or white smoke is an indication that the fire, what sign indicates the fire is extinguished

A

Weinstein and or white smoke are no longer visible

36
Q

How long should a master stream be used for

A

Only as long as fire is visible

37
Q

Elevated streams must never be directed into natural openings such as skylights scuttles hatches vent holes or self ventilated holes because

A

You can force heat smoke and fire back down into the building and to lower floors

38
Q

Master stream appliances require water flows from

A

350 to 2000 GPM

39
Q

Elevated master stream appliances must be present with pre-piped waterways on which type of aerial device

A

Elevated platform

40
Q

Minimum size small for tip for a master stream is

A

Inch and a quarter

41
Q

Strong crosswinds will affect what type of master streams pattern or nozzle type

A

All of them

42
Q

Master streams operating from the exterior to the interior of the building should be moved how

A

The stream should be moved both horizontally and vertically

43
Q

Large caliber devices that are used primarily during defensive operations

A

Master stream appliances

44
Q

A safety lock is provided on portable master streams to prevent lowering the nozzle below what degrees or angle

A

35° angle

Engine Company Fire Ground Operations (10 decks)

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