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NUMBERS Flashcards

1
Q

What is the acceptable pressure range for a leak test?

A

100-120 psi, with no more than 3 psi loss

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2
Q

What is the cut-in pressure for air brakes?

A

No lower than 85 psi

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3
Q

What is the low air alarm pressure setting?

A

No lower than 55 psi (set to 60 psi factory)

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4
Q

What is the cut-out pressure range for air brakes?

A

110-120 psi, no more than 130

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5
Q

At what pressure will the air brake set itself?

A

Between 20-45 psi (no less than 20 psi)

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6
Q

What is the normal operating temperature range for coolant?

A

210-230 F (above 220 F call shop immediately)

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7
Q

What should the oil pressure gauge read?

A

20-60 psi

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8
Q

What is the acceptable battery voltage range?

A

12-14 volts

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9
Q

What is the normal transmission oil temperature range?

A

100-250 F

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10
Q

What is the air pressure range in the holding tanks?

A

80-120 psi

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11
Q

At what pressure does the air pressure alarm activate?

A

60 psi ALARM

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12
Q

What is the pressure at which the spring brake application starts?

A

55 psi

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13
Q

At what pressure do brakes lock?

A

30 psi

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14
Q

What is the typical tachometer range at idle?

A

600 RPM - 2200 RPM

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15
Q

What is the normal water temperature range?

A

190-220 degrees

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16
Q

What is the minimum tire depth for front tires?

A

4/32

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17
Q

What is the minimum tire depth for rear tires?

A

2/32

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18
Q

How far ahead should a driver look when driving?

A

12-15 seconds

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19
Q

At highway speeds, how far should a driver look ahead?

A

¼ mile

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20
Q

How far behind you should you look in your mirrors?

A

200 feet

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21
Q

What is the impact factor at 20 to 40 mph?

A

4x impact

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22
Q

What is the stopping distance at 60 mph?

A

Football field

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23
Q

What is the maximum stopping distance for engines?

A

50 ft

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24
Q

How much should speeds be reduced on wet roads?

A

1/3

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25
Q

What is the minimum distance to follow large vehicles?

A

No closer than 300 ft

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26
Q

What is the low beam headlight range?

A

250 ft

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27
Q

What is the high beam headlight range?

A

350-500 ft

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28
Q

What is the maximum allowable brake rod extension?

29
Q

What is the pump pressure for FDC sprinklers?

30
Q

What is the standpipe pump pressure?

31
Q

What is the maximum main pump pressure?

A

250 psi MAX

32
Q

What is the progressive pump pressure for downhill?

33
Q

What is the progressive pump pressure for level ground?

34
Q

What is the progressive pump pressure for uphill?

35
Q

What residual pressure should be maintained during relay pumping?

A

10-20 psi or more

36
Q

What is the pump pressure for 2.5” hose over 800 feet?

37
Q

What is the pump pressure for LDH over 800 feet?

38
Q

What is the pump pressure for 2.5” hose under 800 feet?

39
Q

What is the pump pressure for LDH under 800 feet?

40
Q

What is the RPM for drafting?

41
Q

What is the maximum time for primer operation?

A

No more than 45 seconds

42
Q

When should discharge gates be opened during drafting?

A

When pressure reaches 25-50 psi

43
Q

In what mode is the pump in during drafting?

A

RPM mode (900-1100)

44
Q

What is the minimum strainer clearance in all directions?

45
Q

What is the maximum operating pressure for the PIV?

46
Q

What is the factory setting for the relief valve?

47
Q

How much does pressure increase for every 10 GPM?

48
Q

How much pressure is added for elevation in pump charts?

A

.5 psi for each foot, 5 psi for each story

49
Q

What is the safety loop pressure?

A

25 psi per 100 feet + 80 psi nozzle pressure

50
Q

What is the nozzle pressure for a 2.5” fog nozzle?

51
Q

What is the safety loop friction loss?

A

25 psi per 100 feet

52
Q

What is the nozzle pressure for a 100’ on 1 3/4” handline?

53
Q

What is the flow rate for a 1” tip on a 2.5” hose line?

54
Q

What is the flow rate for a 1 1/8” tip on a 2.5” hose line?

55
Q

What is the flow rate for a 1 1/4” tip on a 2.4” hose line?

56
Q

What is the flow rate for a 1 3/8” deck gun tip?

57
Q

What is the flow rate for a 1 ½” deck gun tip?

58
Q

What is the flow rate for a 1 ¾” deck gun tip?

59
Q

What is the flow rate for a 2” deck gun tip?

60
Q

What is the maximum slope to travel on while driving off-road?

A

40% (22 degrees) or 100% (45 degrees)

61
Q

How far apart should firefighters be when climbing an aerial ladder?

A

10 feet apart

62
Q

What is the minimum safe distance to operate an aerial ladder from power lines?

63
Q

What does two green lights on a Scott Pak indicate?

A

More than 75%

64
Q

What does one green light on a Scott Pak indicate?

65
Q

What does a blinking orange light on a Scott Pak indicate?

66
Q

What does a red light on a Scott Pak indicate?

A

Less than 25%

67
Q

How many lumens does a Pelican light produce?

A

6000 lumens

68
Q

What is the GPM for a fog nozzle?

69
Q

What is the GPM for a 7/8 “ smooth bore nozzle?

Fire Engineer (3 decks)

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