Brainscape's Knowledge GenomeTM

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


See full index

Apparatus Tech Test > Hydraulics Manual > Flashcards

Hydraulics Manual Flashcards

1
Q

How far from the pump panel can the Portable Foam Educator be placed? How far from the nozzle?

A

50’ from the pump panel. 200’ from the nozzle

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

The Akron assault nozzle carries a nozzle pressure of? Flows?

A

50psi, Flows 175gpm(Fog) 185gpm 15/16 slug

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

The Akron Mercury Quick-Attack Monitor with a smooth bore 1”3/8 tip requires a nozzle pressure of

A

80psi

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

Permanently mounted monitors in Fairfax County flow between 500-1,000gpm. List the following tip sizes final discharge pressures.

a. 2”
b. 1”3/4
c. 1”1/2
d. 1”3/8

A

a. 2” = 120
b. 1”3/4 = 110
c. 1”1/2 = 110
d. 1”3/8 = 110

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

Fairfax County typically utilizes what type of pumps on its engine companies?

A

Single Stage, Centrifugal Pump

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

What is the starting pressure for sprinkler systems in Fairfax County?

A

150psi

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

What is the starting pressure for a combination fire protection system in Fairfax County?

A

150psi

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

The Fairfax County blitz line flows how much (fire ground and actual) with the 1”1/8 tip? With the 1’1/4 tip

A

1”1/8 tip =250/266gpm , 1’1/4 tip = 325/328gpm

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

Master stream fog nozzles have a max gpm of?

A

1,250gpm

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

Fairfax County piercing/penetrating nozzles flow? At what pressure?

A

125gpm @ 100psi

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

The Akron assault nozzle when broken down to the slug is what size? Flows?

A

15/16in. flows 185gpm

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

What is the standing order in Fairfax County for starting pressure when charging a stand pipe?

A

150psi

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

What is your standing order for 3” supply operations in regards to starting pressure in Fairfax County?

A

100psi

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

A swimming pool that measures 8ft. long 7ft. wide and 10ft. deep has a volume of?

A

4200gal

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

Smooth bore hand lines carry a nozzle pressure of?

A

50psi

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

100’ section of 4” supply line holds how much water?

A

62.5 gallons

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

List the appliance loss for the following appliances

a. Small appliance flowing greater than 350gpm
b. Ladder Pipe
c. Master streams (excluding Mercury Monitor)
d. Stand Pipes

A

a. Small appliance flowing greater than 350gpm = 10psi
b. Ladder Pipe = 25psi
c. Master streams = 25psi
d. Stand Pipes = 25psi

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

The Akron Mercury Quick-Attack Monitor with a fog nozzle requires a nozzle pressure of?

A

100psi

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

When should sprinkler systems be charged upon arrival on scene in Fairfax County?

A

Smoke or fire showing or reports from interior crews

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

Booster reel lines are typically what diameter? Carry a nozzle pressure of? What is the gpm?

A

1’’ / 100psi / 12 to 60

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

What is the like volumes and percentages associated with each?

A

0-10%–3 like volumes
11-15%–2 like volumes
16-25%–1 like volume
>25%–no like volume

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

A hose line flowing 200gpm has a friction loss of 30psi. If the same line begins flowing 400gpm the friction loss for the hose line would be?

A

120psi

23
Q

What is the formula for calculating friction loss?

A

FL = CQ2L

24
Q

Fairfax County cellar nozzles come in 2 sizes. What are they? Flow? Psi?

A

2 1/2” 350gpm @100psi

1 1/2” 160gpm @100psi

25
Q

The Akron Quick-Attack Mercury Monitor flows?

A

500gpm

26
Q

What is the formula for volume in a cylinder?

A

Pi x r2 x L(or H) x 7.5

27
Q

An unknown diameter hose that is 100ft long has a friction loss of 40psi. All things being equal if you added another 100ft. of identical hose the friction loss would be?

A

80psi

28
Q

What is the minimum supply requirements (hose) when supplying an aerial device in Fairfax County?

A

1 LDH(4”) or 2 3” lines

29
Q

When operating a flowing master stream aerial ladders can be retracted while the water way is closed.

A

False

30
Q

What is the preferred nozzle tip/nozzle choice while flowing foam from a CAFs unit?

A

15/16” smooth bore slug

31
Q

What is the Total Pressure Loss (TPL) formula?

A

TPL = FL + AL +/- EL

32
Q

Fairfax County distributor nozzles come in 2 sizes. What are they? Flow? Psi?

A

2 1/2” = 250gpm @ 100psi

1 1/2” = 95gpm @ 50psi

33
Q

Smooth bore master streams carry a nozzle pressure of?

A

80psi

34
Q

In Fairfax County you may supply the Mercury Quick-Attack Monitor w a 4” supply line

A

False

35
Q

What is the starting pressure for all aerial devices in Fairfax County?

A

150psi

36
Q

What is the pressure exerted by a 1 foot high column of water?

A

.434psi

37
Q

The Mercury Quick-Attack Monitor flows 500gpm from either the smooth bore or fog nozzle?

A

True

38
Q

What is the formula for smooth bore nozzle discharge?

A

29.7 x d2 x square root of the nozzle pressure

39
Q

While pumping an “Around the Pump” system and being supplied by another pumper what should intake pressure be limited to?

A

10psi

40
Q

What is the elevation loss for a fire on the 7th floor of a high rise building

A

30psi

41
Q

What is the max safe PDP in Fairfax County?

A

250psi

42
Q

What are the CAFs unites in Fairfax County

A

412, 416, 420 and 441

43
Q

What is Fairfax County’s foam nozzle? What does it flow? Nozzle pressure?

A

JS-10 flows 100gpm @ 100psi

44
Q

A 50ft. section of 1”3/4 hose line holds how much water?

A

6.24

45
Q

The appliance loss for the Akron Mercury Quick-Attack Monitor is?

A

10psi

46
Q

What is the minimum amount of foam a Fairfax County Engine must carry?

A

40 gal

47
Q

How much does one gallon of water weigh?

A

8.33lbs

48
Q

What is your standing order for 4” supply operations in regards to starting pressure in Fairfax County?

A

50psi

49
Q

Any time the intake pressure exceeds ___psi, the pump shall be placed in gear.

A

50

50
Q

List the flows (fire ground) for the following Fairfax County smooth bore master stream nozzles:

a. 2”
b. 1”3/4
c. 1”1/2
d. 1”3/8
e. 1”1/4

A

a. 2” = 1,000gpm
b. 1”3/4 = 800gpm
c. 1”1/2 = 600gpm
d. 1”3/8 = 500gpm
e. 1”1/4 = 400gpm

51
Q

While using Fairfax County’s Portable Foam Educator what is the desired pressure at the induction side of the educator?

A

200psi @ the rear of the educator

52
Q

CAFs hose lines must be kept shut at all times while not flow.

A

False

53
Q

The decon showers used by Fairfax County on hazmat incidents flow? At what pressure?

A

270gpm @ 75psi

Apparatus Tech Test (18 decks)

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