Driver Operator Flashcards

0
Q

What is the Collapse Zone Distance?

A

Equal to at least 1 and 1/2 times the height of the building.
-Position the apparatus at the corners of the building.
p103

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1
Q

Where should the apparatus be positioned if Hazardous material are involved in a fire?

A

Upwind in the Cold zone.

p102

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2
Q

Concerning the inside/outside method, if the building is less then _______ stories tall, engines companies are positioned on the side of the street _________ to the building and aerials are positioned _________of the engine.

A

5 , Closest , Outboard

p105

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3
Q

Concerning the inside/outside method, if the building is higher then _______ stories, The engine takes the _______ position and the aerials are positioned ______ to the building.

A

5, Outside , Next

p105

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4
Q

True or False
When placing the intake hose for direct water supply from static source, First, connect the hard intake hose and strainer to the pumper, then drive the pumper into the final draft position?

A

True

p109

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5
Q

What is Dual Pumping?

A

Pumper 1 and Pumper 2 are connected Intake to intake.

p113

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6
Q

Define Tandem Pumping Operations

A

A form or relay pumping with the pumpers positioned close together rather then evenly spaced in the supply hose layout.
- Used when pressures higher then a single engine is capable of supplying are required.
-Two engines may be positioned as much as 300 feet apart.
- From discharge to intake of second pumper.
p115

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7
Q

Define Wildland/Urban interface

A

The boundary between the Wildland and structural development.
p116

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8
Q

Define Anchor Point in relation to Wildland fire attack.

A

A natural man-made barrier that will prevent the fire from spreading around and encircling the engine and crew.
- Paved roads, lakes, previously burned areas
p116

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9
Q

According to Driver Operator Book, The command vehicle should be positioned ____________ of a building so that the IC is afforded a view of ________ sides of the building.

A

Near a corner, 2

p121

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10
Q

Two types of equipment are used to refill SCBA cylinders on the scene

A
  1. Cascade systems - Air cylinders that are connected together in banks
  2. Breathing air compressors - Engine-driven appliances that take in atmospheric air, purifying it, and compressing it.
    p121
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11
Q

NFPA 1962

A

Standard for the inspection, care, and use of fire hose, couplings, and nozzles and the service testing of fire hose
p115

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12
Q

When is level I staging used?

A

Any emergency response where 2 or more companies are dispatched.
- Stage atleast 1 block away from the scene in their direction of travel
p124

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13
Q

When is level II staging used?

A

When numerous emergency vehicle will be responding to the same incident; multiple alarms need level II staging.
-The first arriving company officer becomes the STAGING AREA MANAGER.
p125

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14
Q

According to Pump ops book, Companies in staging must be ready to respond within _______ minutes of being called.

A

3 minutes

p125

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15
Q

When serving as an additional apparatus for highway blocking, position apparatus ______ to ______ feet behind the shielded apparatus to asct as an additional barrier between firefighters and the flow of traffic.

A

150 to 200 feet.

p126

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16
Q

True or False
When having responded to an EMS call, EMS vehicles are to park of the street or highway and shut off all emergency lights.

A

True

p130

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17
Q

Between _______ degrees F and _______degrees F water exist in a liquid state.

A

32 and 212

p135

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18
Q

Ordinary fresh water is generally considered to weigh ______ lb/ft3 or ________lb/gal

A

62.5 or 8.33

p136

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19
Q

What is Specific Heat?

A

A measure of the heat-absorbing capacity of a substance

p136

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20
Q

What is a BTU?

A

The amount of heat required to raise the temperature of 1 pound of water 1degree F.

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21
Q

Define Latent Heat of Vaporization

A

The quantity of heat absorbed by a substance when it changes from a liquid to a vapor.
- Each pound of water requires approx. 970 btu of additional heat to completely convert to steam.
p137

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22
Q

At _____ degrees F, water expands approx ________ times its original volume.

A

212 , 1,700

p138

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23
Q

Define Viscosity

A

The tendency of a liquid to posses internal resistance to flow
p139

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24
Define Specific Gravity
The density of liquids in relation to water. - Water is given a value of 1 - Liquids with a specific gravity less then 1 are lighter then water and therefore float on water. - Those with greater then 1 are heavier then water and sink to the bottom. p139
25
First Principle (The action of pressure upon fluids)
Fluid pressure is perpendicular to any surface on which it acts. p142
26
Second Principle (The action of pressure upon fluids)
Fluid pressure at a point in a fluid at rest is the same intensity in all directions. p142
27
Third Principle (The action of pressure upon fluids)
Pressure applied to a confined fluid from without is transmitted equally in all directions. p142
28
Fourth Principle (The action of pressure upon fluids)
The pressure of a liquid in an open vessel is proportional to its depth. p142
29
Fifth Principle (The action of pressure upon fluids)
The pressure of a liquid in an open vessel is proportional to the density of the liquid. p143
30
Sixth Principle (The action of pressure upon fluids)
The pressure of liquid on the bottom of a vessel is independent of the shape of the vessel. p143
31
At sea level, the atmosphere exerts a pressure of _______
14.7 psi | p143
32
Define Head Pressure
Head in the fire service refers to the height of a water supply above the discharge orifice. p144
33
Elevation
Refers to the center line of the pump or the bottom of a static water supply source above or below ground level. p146
34
True or False | The friction loss in old hose may be as much as 50 percent greater than that in a new hose.
True | p147
35
Define Coefficient of Friction
The rougher the inner surface of the pipe | p147
36
First Principle of Friction Loss
If all other conditions are the same, friction loss varies directly with the length of hose or pipe. p147
37
What is the Second Principle of Friction Loss
When hoses are the same size, friction loss varies approx. with the square of the increase in the velocity of the flow. p147
38
What is the Third Principle of Friction loss
For the same discharge, friction loss varies inversely as the fifth power of the diameter of the hose -Proves the advantage that larger hose has less friction loss. p148
39
What is the Fourth principle of Friction loss
For a given flow velocity, friction loss is approx. the same, regardless of the pressure on the water. - Pressure loss is the same when hose at different pressures flow the same amount of water. p148
40
Define Critical Velocity
If the velocity is increased beyond these limits, the friction becomes so great that the entire stream is agitated by resistance. p150
41
Direct Pumping Systems
Use one or more pumps that take water from the primary source and discharge it through the filtration and treatment process. p152
42
What are the 3 methods for moving water in a system?
1. Direct pumping 2. Gravity 3. Combination p152
43
In residential areas, what is the recommended size for fire hydrant supply mains?
6 iches with 8 inch cross-connecting mains at intervals not more then 600 feet.
44
In business and industrial districts, what is the reccommended size fir fire hydrant mains?
8 inch with cross-connecting mains every 600 ft. | p157
45
Define Average daily consumption
The average of the total amount of water used in a water distribution system over the period of 1 year. p159
46
Maximum daily consumption
Maximum total amount of water that was used during any 24 hour interval within a 3 year period. -The maximum daily consumption is normally about 1 and 1/2 times the average daily consumption. p160
47
Peak hourly consumption
Maximum amount of water used in any 1 hour interval over the course of a day p160
48
Solid stream nozzles used on handlines should be operated at? Master stream?
50 psi , 80 psi | p166
49
Formula for Determining the flow from a solid stream
GPM=29.7 x d(squared) x (Square root) NP | p166
50
Generally, _____gpm is the maximum amount of water that can safely flow through a handline nozzle.
350 gpm. | p171
51
Master streams should be operated at? Smoothbore Fog ....And flow usually ______gpm or greater.
80psi 100psi 350 gpm p171
52
NFPA 1901
Standard for automotive Fire apparatus | p175
53
What is the average length of piercing nozzle?
Commonly used in aircraft firefighting, they can be 3-6 foot long and are made of hollow steel rod 1 1/ 2 inches in diameter. Capable of delivering 100gpm p176
54
Nozzle reaction is illustrated by Newtons _____ law of Motion.
3rd "For every action there is an equal and opposite reaction" p178
55
Practical working limits for velocity of fire streams are within ____ to ____ feet per second.
60 to 120 | p178
56
Formula for calculating Nozzle reaction Solid stream
NR=1.57 x d (squared) x NP p178
57
Formula for calculating Nozzle reaction for Fog stream
NR = 0.0505 X Q X (Square root) NP p179
58
Elevation Pressure
Elevation differences create pressure loss or gain. | p184
59
Water exerts a pressure of _______psi per foot foot of elevation.
0.434 psi p191
60
Friction loss formula
FL=CQ(squared)L
61
Determine Solid Stream Flow
29.7 x d (Squared) x (square root) NP
62
Pump discharge pressure formula
PDP = NP + TPL
63
Net pump discharge pressure
NPDP = PDP - Intake reading
64
Elevation pressure formulas
EP=5psi x (# of stories -1) or EP=0.5H
65
What percentages of the calls made by FD are EMS calls?
60 % p130
66
Coefficient for 1 1/2 inch
24
67
Coefficient for 1 3/4 with 1 1/2 coupling?
15.5
68
Coefficient for 2 1/2 inch
2
69
Coefficient for 3 with 2 1/2 inch coupling?
0.8
70
Coefficient for 3 with 3 inch coupling?
0.6777
71
Coefficient for 5 inch
0.08