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Can-Act Eng > SFD Hydraulics > Flashcards

SFD Hydraulics Flashcards

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SAT® Prep flashcards
1
Q

PDP

A

Pump discharge pressure

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2
Q

NP

A

Nozzle pressure

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3
Q

FL

A

Friction Loss

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4
Q

APP

A

Appliance Pressure

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5
Q

EL

A

Elevation gain/loss

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6
Q

Handheld fog nozzles
(SM20FG, SM30FG)

A

100 psi

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7
Q

Handheld high rise “low pressure”fog nozzles
(SM20FGLP, fire chief)

A

75 psi

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8
Q

Handheld smooth bore nozzles
(1 1/4” and smaller)

A

50 psi

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9
Q

Master stream/defensive smooth bore
(1 1/4” and larger)

A

80 psi

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10
Q

Any deck gun/master stream fog

A

75 psi

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11
Q

Rapid attack nozzle
(RAN) @ 400 GPM

A

50 psi

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12
Q

Piercing nozzle @100 gpm

A

100 psi

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13
Q

If an 1 1/4” tip is to be used as a offensive attack line what will the nozzle pressure be?

A

50 psi

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14
Q

If a 1 1/4” tip is used as a defensive line or in a Keenan loop, what will the nozzle pressure be?

A

80 psi and GPM will be adjusted accordingly.

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15
Q

Friction loss formula

A

FL = C x Q² x L

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16
Q

1 3/4” coefficient

A

12

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17
Q

2 1/2” coefficient

A

2

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18
Q

(2) 2 1/2” coefficient

A

0.5

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19
Q

4” coefficient

A

0.2

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20
Q

Q=

A

(Total GPM through same diameter hose line/100) ²

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21
Q

L=

A

(Total length of same diameter hose line/100)

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22
Q

APP for Aerial Waterway and/or Downed Forward Pump (Dead Pump)

A

25 psi

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23
Q

APP for Any Building Standpipe System

A

25 psi

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24
Q

APP for Any Master Stream Monitor (except Rapid Attack Monitor)

A

10 psi

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25
Q

APP for Any Gated Wye*

A

10 psi

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26
Q

APP for Any Reducer (from larger to smaller diameter) *

A

10 psi

27
Q

APP for Rapid Attack Monitor @ 400 GPM

A

5 psi

28
Q

What appliances are only factored into PDP if they are being used in a hose system that is flowing greater than 350 gpm?

A

Any gated wye and any reducer (larger-smaller)

29
Q

APP is factored into every piece of equipment in the system that-

A

Generates appliance loss

30
Q

For high rise ops, how many psi per elevated floor may be used?

A

5 psi

31
Q

Nozzle GPM for handheld fog (SM20-FG)

A

150 GPM

32
Q

Nozzle GPM for high rise fog (SM20FG-LP)

A

150

33
Q

Nozzle GPM for fire chief nozzle (4014-HR)

A

150 GPM

34
Q

Nozzle GPM for 2 1/2” fog (SM-30F)

A

250 GPM

35
Q

Nozzle GPM for RAM XD

A

400 GPM

36
Q

Nozzle GPM for Master stream fog nozzles

A

1000

37
Q

Nozzle GPM for 1” tip

A

200 GPM

38
Q

Nozzle GPM for 1 1/8” tip

A

250 GPM

39
Q

Nozzle GPM for 1 1/4” tip (handheld)

A

300 GPM

40
Q

Nozzle GPM for 1 1/4” tip (master stream)

A

400 GPM

41
Q

Nozzle GPM for 1 3/8” tip

A

500 GPM

42
Q

Nozzle GPM for 1 1/2” tip

A

600 GPM

43
Q

Nozzle GPM for 1 5/8” tip

A

700 GPM

44
Q

Nozzle GPM for 1 3/4” tip

A

800 GPM

45
Q

Nozzle GPM for 1 7/8” tip

A

900 GPM

46
Q

Nozzle GPM for 2” tip

A

1000 GPM

47
Q

Total PDP for any hose system should not be more than what PSI?

A

250 PSI

48
Q

Master streams are defined as-

A

Hose lines flowing more than 350 GPM though a single, continuous hose system

49
Q

What is the minimum GPM for an 1 3/4” attack line per NFPA 1710?

A

150 GPM

50
Q

All minimum GPMs are dependent upon what?

A

Proper residual pressures to support all desired hose lines in operation

51
Q

Pump operators shall notify Command anytime their residual intake pressure drops below what PSI?

A

10 PSI

52
Q

What foam % is best for overhaul?

A

0.1-0.2% (wet foam)

53
Q

What foam % is best for initial attack (when applicable)

A

0.3-0.5%

54
Q

What foam % is best for exposure protection

A

1% (dry foam)

55
Q

What foam % is best for hydrocarbons

A

3%

56
Q

What foam % is best for polar solvents

A

6%

57
Q

Bump bag PDP

A

100PSI

58
Q

Ganzer pack minimum PDP

A

75 PSI and pump to effect

59
Q

Connections to an FDC to support a sprinkler system shall be pumped at what psi

A

150 psi with known sprinkler activation, or smoke/flames visible from the target occupancy.

60
Q

Percent drop method calculation (hydrant performance)

A

(Static – Residual) x 100 /Static

61
Q

PDP Calculation

A

PDP = NP + FL¹ + FL² + APP¹ + APP² ± EL

62
Q

If residual pressure drops 0-10% you can pump

A

3x GPM

63
Q

If residual pressure drops 11-15% you can pump

A

2x GPM

64
Q

If residual pressure drops 16-25% you can pump

A

1x GPM

Can-Act Eng (2 decks)

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