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Pump Academy > Pump Academy > Flashcards

Pump Academy Flashcards

1
Q

Air dryer removes how much moisture and air from the system?

A

90%

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2
Q

Pump pressure at the foam eductor.

A

200 psi

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3
Q

Foam percentage for flammable liquids

A

3%

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4
Q

Foam percentage for polar solvents

A

6%

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5
Q

Mode for drafting

A

RPM while priming

Pressure while pumping

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6
Q

Why in RPM mode while establishing a draft?

A

Prevent anti-cavitation feature from activating while in Pressure mode

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7
Q

When should relay operations be considered

A

Whenever NFF exceeds 300 GPM

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8
Q

Relay Formula

A

EP = 20 psi +/- FL

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9
Q

When relay pumping, until friction loss is calculated, pump 4” and 5” at what pressure?

A

4” at 100 psi

5” at 50 psi

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10
Q

What is tandem pumping used for?

A

To overcome elevation

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11
Q

What percentage of braking power comes from front brakes?

A

80%

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12
Q

When do you prime?

A

Only prime if pumping from a tank. No need to prime if getting a supply.

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13
Q

Specific heat

A

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

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14
Q

Specific gravity

A

Specific gravity is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.

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15
Q

Why is the intake gauge also called a compound gauge?

A

Because it reads in psi if positive and inches of mercury if negative.

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16
Q

How to calculate lift in feet from inches of mercury

A

Lift = 1.13 x inches of Mercury

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17
Q

Pump Capacity at 150 psi

A

100%

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18
Q

Pump Capacity at 200 psi

A

70%

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19
Q

Pump Capacity at 250 psi

A

50%

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20
Q

BTU

A

The amount of heat needed to raise the temperature of 1 gallon of water 1 degree

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21
Q

1 cubic foot of water weighs how much?

A

62.4 lbs

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22
Q

1 cubic foot of water contains how many gallons of water?

A

7.481 gallons

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23
Q

1 gallon of fresh water weighs how many pounds?

A

8.34 lbs

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24
Q

NFF formula (amount needed to control fire within 1 minute)

A

GPM = LxW / 3 x % involvement

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25
Q

Formula for GPM from smooth bore nozzle

A

GPM = 29.7 x D2 x square root of NP

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26
Q

Formula for nozzle reaction from solid bore nozzle

A

NR = 1.5 x D2 x NP

27
Q

Formula for nozzle reaction from straight stream

A

NR = .0505 x GPm x square root of NP

28
Q

Nozzle reaction rule of thumb

A

NR = GPM/2

29
Q

Coefficient Friction Loss formula

A

FL = CxQ2xL

30
Q

FL coefficient for 1 3/4” hose

A

15.5

31
Q

FL coefficient for 2 1/2” hose

A

2

32
Q

FL coefficient for 3” hose

A

.67

33
Q

FL coefficient for 4” hose

A

.2

34
Q

FL coefficient for 5” hose

A

.08

35
Q

Constant Q formula for 1 3/4” hose

A

Q2 x 10

36
Q

Constant Q formula for 2 1/2” hose

A

Q2 x 2

37
Q

Constant Q formula for 3” hose

A

Q2

38
Q

Constant Q formula for 4” hose

A

Q2/5

39
Q

Constant Q formula for 5” hose

A

Q2/15

40
Q

Formula for pump discharge pressure

A

PDP = NP + FL +/- Elevation

41
Q

EP for 1 3/4” 200’ Preconnect

A

145 psi = 150 GPM

42
Q

EP for 2 1/2” 200’ Preconnect

A

140 psi = 300 GPM

43
Q

EP for 2 1/2” 200’ Preconnect with 1 1/4” Smooth Bore

A

95 psi = 326 GPM

44
Q

NP for smooth bore nozzle

A

50 psi

45
Q

NP for master stream

A

80 psi

46
Q

NP for fog tip nozzle

A

100 psi

47
Q

GPM from 1/2” SB tip

A

53

48
Q

GPM from 5/8” SB tip

A

81

49
Q

GPM from 3/4” SB tip

A

118

50
Q

GPM from 7/8” SB tip

A

161

51
Q

GPM from 15/16” SB tip

A

185

52
Q

GPM from 1” SB tip

A

210

53
Q

GPM from 1 1/8” SB tip

A

266

54
Q

GPM from 1 3/16” SB tip

A

296

55
Q

GPM from 1 1/4” SB tip

A

326

56
Q

GPM from 1 3/8” master stream tip

A

500

57
Q

GPM from 1 1/2” master stream tip

A

600

58
Q

GPM from 1 3/4” master stream tip

A

800

59
Q

GPM from 2” master stream tip

A

1000

60
Q

Pressure for sprinkler systems

A

150 @ FDC

61
Q

Pressure for standpipes

A

25 + 5 for elevation

62
Q

Relay Pump Formula

A

EP = 20 + FL +/- Elevation

63
Q

Ladder supply pressure

A

185 psi to the base

Pump Academy (1 decks)

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