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BGFD Fire Engineer Handbook > Handbook > Flashcards

Handbook Flashcards

1
Q

Tread Depth for apparatus tires?

Front?

All others

A

Front: 4/32 inch

Others: 2/32 inch

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2
Q

Steering wheel play allowance

A

No more than 10o in either direction

(2 inches movement on a 20 inch steering wheel)

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3
Q

Air pressure should build from 50 to 90 within what time frame?

A

3 mins

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4
Q

Normal Operating Oil Pressure

Idling?

Operating ?

What should you do if pressure is low, dropping, fluctuating

A

Idling: 5-20 psi

Operating: 35-75 psi

Stop immediately

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5
Q

How to test for hydraulic leaks if a vehicle is equipped with Hydraulic brakes

A

Pump the brake pedal three times then apply firm pressure to the pedal and hold for 5 seconds

The pedal should not move

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6
Q

Four types of retarders

A

Exhaust

Engine

Hydraulic

Electric

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7
Q

Good drivers should look how far ahead?

A

12 to 15 seconds

1 block to a quarter mile.

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8
Q

If you must stop on or by a one way or divided highway, how should you place your warning device

Two way or undivided highway

A

10 ft, 100 ft, and 200 feet

Two way, undivided: 10 feet front or back and 100’ front and back

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9
Q

Total Stopping Distance Equation

A

Perception + Reaction + Braking

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10
Q

Heavy Vehicle Formula

A

1 second required for each 10 feet of vehicle length at speeds under 40 mph

Above 40 mph, add 1 second for additional speed

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11
Q

If there are two turning lanes, which one should you always take?

A

The right, you can see out of your left mirror

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12
Q

How far can you see ahead with head lights

A

250 feet with low beams

350-500 feet with high beams

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13
Q

How close to stop to a railroad

A

15 feet

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14
Q

Cut out level? of an air compressor governor?

Cut in level?

A

Cut out : 125 psi

Cut in 100

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15
Q

Cold weather operations require all apparatus to operate with dry pumps when temps fall below what?

A

32o

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16
Q

What should you do if your running an apparatus with a wet pump during cold weather operation

?

A

Engage the pump, pull tank to pump and recirculate

Close the pump drains

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17
Q

When using Chains during cold weather operations

Disengage at what speed?

Maximum efficiency speed

Engage at speeds of what?

Dont exceed what speed?

Snow depths should not exceed ?

A
  1. Disengage any speed under 25 mph
  2. Max eff is 5 mph
  3. Engage at 5 to 25
  4. Dont exceed 30mph
  5. 6-8”
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18
Q

Hydroplanning typically begins at what speed?

A

35 mph

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19
Q

What is something to be considered before pumping?

A

Activate Regen Inhibit

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20
Q

RPM for:

High Idle?

Regen?

A

1000 rpm

1400-1600 rpm

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21
Q

Something to be consider with front towing some of the fire apparatus?

A

Disconnect the drive shaft at the rear U joint

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22
Q

What should you grease aerial contact points with?

A

Poly-Lube 250

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23
Q

How to get the proper hydraulic oil level?

A

Aerial must be cradled with all stabilizers in the stowed position to obtain a proper oil reading.

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24
Q

What is it called when you make a short fold or reverse bend in the hose during loading process so that couplings are not too close to the front or rear of the hose bed and will not flip over when pulled out of the bed?

A

Dutchman

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25
Q

Load large diameter hose with all couplings where?

A

near the front of the bed.

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26
Q

When should interior cleaning of the fire apparatus be done?

A

Second Saturday of each month

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27
Q

Apparatus Schedule cleaning:

Washing?

Cab and Compartments?

Undercarriage Cleaning?

Waxing?

A

Washing: Min. of weekly

Cab and Compartments: monthly (2nd saturday)

Undercarriage: April

Waxing: October

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28
Q

How often should Ground ladders be visually inspected?

A

At least once every month and after each use

29
Q

Tires should be put out of service when repair bulges are greater than what?

A

3/8 inch

30
Q

K950 Blade size

K1250 Blade Size

A

K950: 12,14,16”

K1250: 14” and 16”

31
Q

What is the first stage in the K12 filtration system?

What % of dust is removed from this stage?

A

Centrifugal Force

80% of dust is removed

32
Q

What is the second stage of K12 filtration system?

What % of remaining dust volume is removed?

Final Filtration Stage?

A

Foam filtered (Filter is immersed in oil and made up of three layers)

Removes 95% of remaining dust volume

Paper Filter final stage

33
Q

What is the carburetors main job ?

A

Supply the right mixture of fuel and air to the engine

34
Q

Main principle behind the SmartCarb Carburettor in K12

A

Air duct ensures air pressure in the fuel chamber and filter chamber remains constant

35
Q

Engagement speed of Clutch on K12 is about rpm

A

3400 rpm

Centrifugal type clutch

36
Q

The K12’s have a built in over-revving protector which limits engine speed to what?

A

9750rpm

37
Q

The body of K12 is cast in what?

A

Magnesium alloy

38
Q

Fuel tank for K12 is sufficient for how much work (mins)

A

25-30 mins

39
Q

Prolong uses of vibrating handles can cause injuries to blood vessels, termed what?

A

“White fingers”

40
Q

When Carrying a chainsaw, the bar should be pointed where?

A

Behind you

41
Q

Acsendant Safety features

A

Body collison

Rotation Interlock (Short jack)

Maximum Elevation Slow down

Nozzle Stow

Aerial Function Interlock

42
Q

Ground Bearing Support in compliance with NFPA 1901 with Stabilizer pads.

Must not exceed What with each pad?

A

75 pounds per square inch

43
Q

When cribbing for stabilizer the cribbing should never be what height?

A

taller than twice the width of blocking base

44
Q

Do not work within power lines: 350kV

High voltage lines?

A

20 feet

50 feet

45
Q

How much ice can be built up before aerial device is Out of Service?

A

.25 inches of ice built up

46
Q

Maximum allowable Weight per lifting Eye in Ascendant?

A

500lbs each eye or 1000lbs total

47
Q

How many receptacles in Ascendant platform, provides what?

A

2 receptacles 20 amps of 120 VAC

48
Q

The EPU on most aerials have a limited run time before overheating. Whats the time?

A

Do not run more than 30 minutes continuous without allowing 30 minutes for cooling down

49
Q

Ascendant Stabilizer Position Status

Green

Yellow

Red

Gray

A

Green: Full extension set

Yellow Short (jacked) extension set

Red: Short extension NOT set

Gray Full retracted

50
Q

Apparatus Leveling Safe Operation

0-5o

5-8o

A

0-5o Full capacity

5-8o Half Capacity

51
Q

When laying in hose around hydrant, how should you do it?

A

J pattern

Never wrap more than half way around hydrant

52
Q

When pump and roll operation, what gear must you be in ?

A

1st gear position

53
Q

What should you always do before removing inlet or discharge caps?

A

Open drain/bleeder valve

54
Q

How long should you flush out hydrants before connecting them?

A

30 seconds

55
Q

Max Fill Rate

A

1000 gpm or the tanks capacity in GPM (500 gal tank = 500 GPM)

56
Q

Maintain intake pressure at or above psi when operating from a pressurized external supply

A

20 psi

57
Q

During Cold Weather Operation, All valves and drains shall remain with exception of the drain

A

closed; main pump drain

58
Q

What PSI will the spring brakes come on when the air pressure drops?

A

20-45 psi

59
Q

If the low def fluid symbol comes on, you must not do what?

A

DO NOT SHUT DOWN ENGINE

60
Q

How much deviation is acceptable when checking lift cylinders

A

1/8 inch deviation

61
Q

Most common reactive forces while using a chainsaw?

A

Kickback

Pushback

Pull-in

62
Q

When using Cribbing to assist with stabilization, you must have cribbing that will support at least ?

A

100 psi of ground contact pressure.

63
Q

Maximum Theoretical Lift of a pump?

Max practical lift at sea level?

A

34 feet

20-25 feet

64
Q

Each one inch drop in Barometric Pressure or each 1000 feet elevation of the pumping site reduces engine power approximately how much %

A

3 ½% engines not equipped with turbo charger

65
Q

Each 12 degree rise in temp above 60 f of carburetor intake air reduces engine power approximately what %

Lowering of humidity does what to the power?

A

1%

Reduces power slightly

66
Q

Each one inch drop in Barometric Pressure or each 1000 feet of elevation reduces the max possible static lift of a pump approximately how much?

A

1 foot

67
Q

Limit speed to what when laying hose?

A

5 mph

68
Q

Maximum inlet pressure for tank filling is?

A

100 psi

69
Q

Using breaks down a long steep hill is supplement to what?

A

Engine brakes

BGFD Fire Engineer Handbook (1 decks)

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