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Apperatus Tech Test > IFSTA 6 Hose Nozzles & Rate Flow > Flashcards

IFSTA 6 Hose Nozzles & Rate Flow Flashcards

1
Q

What is defined as a stream of water or other extinguishing agent after it leaves a nozzle until it reaches the desired point

3rd Ed
page 193

A

fire stream

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2
Q

what are the three basic types of fire stream

3rd ed
page 193

A

solid
fog
broken

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3
Q

define solid stream
3rd
page 194

A

hose stream that stays together in a Solid/compact mass produced by smoothbore nozzle

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4
Q

what is the formula to determine discharge rate of a smoothbore nozzle

3rd
page 195

A

29.7 X d^2 X sq root NP

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5
Q

what three methods may be used to produce a fog stream

3rd ed
page 196

A

Deflection at thePeriphery
impinging Jets
combination

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6
Q

define periphery deflected streams

3rd ed page 196

A

water deflected around an inside circular stem of nozzle

position of stem determines shape of stream

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7
Q

define impinge jet stream

3rd ed page 196

A

several jets of water collide at an angle to create fine, evenly divided particles

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8
Q

define fog stream
3rd ed
page 196

A

Water stream of finally divided particles used for fire control

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9
Q

The reach of a fog stream is directly related to what
3rd ed
page 197

A

width of stream
size of the water particles
wind
volume of water flowing

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10
Q

define constant flow fog nozzle
3rd ed
page 197

A

nozzle designed to flow a specific volume of water on all stream patterns at a specific nozzle discharge pressure

our akron assault

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11
Q

Define select gallonage nozzle
3rd ed
page 197

A

Nozzle allows fire fighter operating Handline to select flow rate at rated discharge pressure

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12
Q

define automatic fog nozzle
3rd ed
page 198

A

aka variable flow nozzles

nozzle with an ability to change patterns while maintaining same nozzle pressure

if gpm changes, it will auto adjust to maintain same pressure & pattern

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13
Q

Which nozzle maintains approximately the same nozzle pressure and pattern even if the gallonage supplied to the nozzle changes

3rd ed
page 198

A

automatic fog nozzle

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14
Q

Which type of fog nozzle are basically variable flow nozzles with pattern change capability and the ability to maintain the same nozzle pressure

3rd ed
page 198

A

Automatic fog nozzle

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15
Q

which type of fog nozzle supplies the selected flow at the rated nozzle discharge pressure

3rd ed
page 197

A

Constant flow nozzles

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16
Q

which type of nozzle discharge the same volume of water regardless of the pattern setting

3rd ed
page 197

A

constant flow fog nozzle

17
Q

which type of fog nozzle serves as a pressure regulator for the pump or as lines are added or shut down ensuring that all available water may be used continuously

3rd ed
page -98

A

Automatic fog nozzles

18
Q

what are the three types of Handline nozzles

3rd ed
page 199

A

solid
fog
broken stream

19
Q

define master stream nozzle
3rd ed
page 199

A

nozzles capable of flowing in excess of 350 GPM must be properly secured for safe operation

20
Q

what two types of streams may master streams produce

3rd ed
page 199

A

solid

fog

21
Q

define fixed monitor
3rd ed
page 200

A

A.k.a. deck gun

master stream permanently mounted on Apparatus

22
Q

define combination monitor
3rd ed
page 200

A

Maybe used in a mount on the Apparatus or moved in used remotely from the vehicle

23
Q

define portable monitor
3rd ed
page 200

A

Stored on Apparatus for deployment to a specific location to be used

24
Q

define cellar nozzle
3rd ed
page 200

A

A.k.a. distributor
nozzle most often lowered through holes or other openings
deployed for attics & void spaces

25
Q

define piercing nozzle
3rd ed
201

A

nozzle with an angled case hardened steel tip that can be driven through wall roof or ceiling to extinguish hidden fires

Flows approximately 125 GPM at 100 psi

26
Q

define chimney nozzle
3rd ed
page 201

A

Device of brass or steal the small impinging holes

flows approximately 1.5 to 3 GPM
at 100 psi

attached booster hose

27
Q

what is the equation for determining nozzle reaction for solid stream nozzles
3rd ed
page 203

A

1.57 X d^2 X NP

28
Q

what is the formula for determine nozzle reaction of a fog stream nozzle
3rd ed
page 204

A

.0505 X Q X sq root NP

Apperatus Tech Test (44 decks)

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