IFSTA DRIVER OPERATOR Flashcards
0
Q
Code 3 driving speed allowed over posted
A
10 mph over posted
1
Q
NFPA 1002, 1451, 1901, 11C
A
1002- driver/operator qualms
1451- vehicle ops training
11C- mobile foam apparatus
2
Q
Water tender minimum gallon capacity
A
1000 GPM
3
Q
Pump capacity and increments
A
Starts at 750 GPM and increases by 250 increments
4
Q
Mini pumper/ midi pumper
A
500/1000
5
Q
Quint
A
Aerial, ground ladders, pump, water, fire hose
Minimum pump- 250 GPM
True Quint 750 GPM
6
Q
Inverter
A
12-24 volt DC to 110-220 volt AC
7
Q
ARFF
A
Aircraft Rescue and Fire Fighting
8
Q
Type 1 engine capacities GPM and pump
A
1000 GPM pump
400 gallon pump
9
Q
Type 3 capacities
A
500 pump
400 tank
10
Q
Water tender types
A
1- 300 GPM 5000 Tank
2- 200 GPM 2500 Tank
3- 200 GPM 1000 Tank
11
Q
Walk around approach
A
Lean/stance
Leaks/fluids
12
Q
Left drivers side walk around
A
Observe cab
Check doors/mirrors
Window/glass
13
Q
Walk around tire/ wheel
A
Wheel-missing, bent studs, lugs, clamps.
Check each lug by hand.
Fluid leaks
14
Q
Walk around suspension
A
Springs, spring hangars, shackles, u bolts, shock absorbers
Leafs- no cracks or broken
15
Q
Walk around tires
A
Inflation, stem condition, condition, depth
16
Q
Walk around front
A
Damage, wind shield, under cab axel, steering
17
Q
Walk around rear of cab to tailboard
A
Damage, tires/suspension,
duals same tire with no touching
18
Q
Walk around rear
A
Tail board, hose loads, lights
19
Q
Walk around in cab
A
Seatbelt, mirrors adjust, gauges
20
Q
Steering wheel free play
A
No more than 10 degrees
21
Q
Parking brake holding on a grade?
A
Hold up to 20% grades
22
Q
NFPA 1901 stopping distance
A
From 20 mph to stop in less than 35 ft
23
Q
Air pressure build time for operations
A
60 seconds for operations
24
Air protection valve
Keeps air horns from honking if air below 80 psi
25
Stopping brake test
5 mph- apply firmly- stop in 20 ft
26
NFPA 1901 brake requirement
20 mph--stop under 35 ft
27
Cab lift items
Engine oil, TRANS, exhaust, air filter, coolant, batteries, steering fluid,
air dryer, belts, leaks, wiring
28
5 major crash reasons for apparatus
Backing, reckless public, excessive speed, lack of driving skill, poor design
29
Gear choice
200-300 RPM lower than recommended
30
Idling fuel consumption
¹/₂ gallon per hr
31
3 exceptions to being belted
Pt. care in ambulance
Loading hose on apparatus
Tiller training
32
NFPA 1500
No tailboard riding
33
DRIVER CONTROL FACTORS
```
Aim high
Big picture
Eyes moving
Leave an out
Make sure u are heard and seen
```
34
Space between responding apparatus
300-500ft
35
Factors influencing stopping
Condition of driving surface
Speed
Weight
Cond/type of braking system
36
Snow and ice stopping distance
3-15 times longer
37
Factors influencing positioning
SOPs, water supply, rescue, attack method, exposures, wind, terrain, relocation potential.
38
Collapse zone
Minimum height of building
39
Outrun siren
Above 50 mph
40
Scene positioning
```
Rescue
Attack method
SOPs
Water supply
Wind
Terrain
Relocation potential
```
41
Hard suction on hydrant
No
42
Intake length
10-50ft
43
Dual pumping vs tandem
Dual-intake to intake
| Tandem- discharge to intake
44
2 types of light and air
Cascade and air compressor
45
Equipment Behind shielding engine distance
150-200 ft
46
Water density
Weight per unit of volume
Cubic ft-62.5 lbs
Gallon 8.33 lbs
47
Law of Specific Heat
Heat absorbing capacity
48
Law of Latent Heat
Quantity of heat absorbed by a substance when it goes from liquid-->vapor
49
Liquid--->vapor
Boiling point
50
Water--->stream heat absorption
970 BTUs
51
1 gallon to steam heat absorption
9346 BTU
52
Pressure Principles
Perpendicular to the surface it acts on
At rest, same in all directions
Applied to confined fluid, transmits equally
Press of liquid in open container is proportional to depth
Open vessel proportional to density
Pressure of liquid on bottom of vessel is independent of shape
53
Types of pressure
```
Atmospheric
PSIA
PSIG-included atmospheric w/pressure
Elevation-centerline of pump
Altitude- position above sea level
```
54
Friction loss
Water molecules against each other
Hose lining and couplings
Sharp bends changes in hose size
Improper gasket size
55
FL PRINCIPLES
- All the same, FL varies directly with length
- Hose size same, FL varies with velocity of flow p=2X FL=4X
- Same discharge, FL varies inversely as the 5th power of diameter
- Given flow velocity, FL is approx same
56
Public water system
Direct pumping, Gravity, combo
57
Residential hydrants
Mains 6", 8" cross connect, not more than 600'
58
ADC, MDC, PHC
Average daily consumption
Max daily
Peak hourly
59
Nozzle streams
Solid, broken, fog
60
Solid stream pressures
Handling-50 psi
| Master- 80 psi
61
Hand lines
³/₄"-3"
62
Master streams pressures
Smooth bore- 80 psi
| Fog- 100 psi
63
Broken stream
Larger drops than fog
Cellar
Water curtain
64
FACTORS INFLUENCING DISCHARGE PRESSURE
- Amount of water discharging
- Impeller speed
- Entering water pressure
65
Double suction impeller
Water enters from both sides to lower lateral thrust
66
Canceling radial thrust
Water removed from 2 directions
67
Capacity of first stage in a two stage pump
50-70%
68
Volume setting required
When more than ²/₃ the rated capacity is needed
69
Max transfer valve operation pressure
75 psi
70
Pump packing
Rope fibers impregnated with graphite or lead
71
Mechanical isolation of discharge and suction
No, velocity
72
PTO
Separate idler gear
Independent speed from road gear
500 GPM from mounting stresses
73
PTO gear ratio
Usually 1.5 times faster
74
Pump piping hydro pressure
500 psi
75
Tank piping capacity
500 GPM
76
1500 GPM pump draft capacities
Max 2 suction lines
| Max 6" x 10 ft
77
2 1/2 discharges shall equal__________
Rated GPM of the pump
78
Pressure control device
Must operate 3-10 seconds after pressure varies by 30 psi
79
Relief valve components
Pilot valve
Pressure chamber
Spring
Diaphragm to separate
80
Pressure rise and fall with relief valve spring
Pressure lower than spring---->main chamber
| Pressure rises above spring----->intake
81
Intake relief valve protects against___________
Water hammer in LDH
82
Electronic pressure governor
Connect to discharge manifold
| Must be above 50 psi
83
Type of priming pumps
Positive displacement, vacuum, exhaust
84
Positive displacement priming types
Rotary vane/gears
| Electric motor
85
2 priming oil purposes
Seal and preservative
86
Exhaust primer
Venturi like eductor
87
Vacuum primer
Exhaust off engine
88
Priming RPM
1000-1200
89
Aux cooling devices
Marine- small tubes like flutes of stream broiler water passes
Immersion- goes through tube in coolant
90
Override parking brake _________RPM
1300
91
Class AA light blue hydrant
Above 1500 GPM
92
Class A Green Hydrant
1000-1499 GPM
93
Class B Orange Hydrant
500-999 GPM
94
Class C Red Hydrant
Below 500 GPM
95
With 3" supply no longer than _______ ft without pumping hydrant
300
96
Draft site factors
Amt of water
Type of water
Access of water
97
Caution draft water temps
Below 35 degrees or above 90
98
Prime no longer than________
30 seconds
99
Before pumping FDC confirm________
Actual fire
100
PDP above ________not recommended
200 psi
101
Dependable lift
At least 14.7
102
Pressure correction
Lift + TFL
103
Drafts sources
Pools
Cisterns
Ground reservoir
Private tank
104
Tenders must have _________tank
External fill tank
105
Dump valve capability
90% of the tank @ 1000 GPM
106
Water shuttle best time saving
Filling and dumping times
107
Tank fill on water tenders fills from _______of tank
Top
108
IFSTA recommends _______ fill ________ at water shuttle.
Pumpers, tenders
