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Details

1 OAK Engineer/ Driver Apparatus
Driver/ Operator
72
Other
Professional
11/05/2010

Additional Other Flashcards

 


 

Cards

Term
What Is the NFPA standard for Automotive Fire Apparatus? 
Definition

1901

 

Term

When driving defensively what are 5 key factors to remember?

 

Definition

1.Aim high in steering

2.Get the big picture 

3. Keep your eyes moving 

4.leave yourself an out 

5. make sure others can see and hear you. 

 

Term
total stopping distance 
Definition
sum of the drivers reaction distance and the vehicles braking distance
Term

reaction distance 

 

Definition
the distance a vehicle travels while a driver is transferring the foot from the accelerator to the brake pedal after perceiving the need for stopping 
Term
braking distance 
Definition
distance vehicle travels from time brakes are applied until apparatus comes to a complete stop. 
Term
Law of Inertia (pertaining to weight transfer)
Definition
object in motion tend to remain in motion; objects at rest tend to remain at rest unless acted upon by an outside force. 
Term
most common causes of skids 
Definition

1.driving too fact for road conditions 

2.failing to properly appreciate weight shifts 

3.failing to anticipate obstacles 

4. improper use of auxiliary braking devices 

5. improper maintenance of tire air pressure and adequate tread depth

 

Term

passing other vehicles 

 

Definition

1.always travel in the innermost lane on multilane roads 

2.avoid passing vehicles on their right side

3.make sure you can see that the opposing lanes of traffic are clear of oncoming traffic if you must cross the center line. 

4. avoid passing other emergency vehicles if at all possible.

 

 

Term
when more than one emergency unit is going to the same location they should travel .........
Definition

300 to 500ft

 

Term
dual pumping operations (tandem)
Definition
one strong hydrant supplies two pumpers.  
Term
when beginning a wildland attack the point you begin your attack from is 
Definition
the anchor point
Term
when visibility is low during wildland ops 
Definition
you should have spotters that are equipped with reliable hand lights, wear highly visible clothing and stay within view at all times. 
Term
when at a wildland incident engines should be placed  
Definition
in safety zone and not left unattended at fires 
Term
what are the control zones that are essential for a hazardous materials incident
Definition

Hazard area

Hot zone 

Warm zone 

Cold zone

Term

true or false 

never stop a fire apparatus across a railroad 

Definition
true 
Term
states of matter 
Definition

Ice (32f))(0c)

liquid (32f to 212f)(0c to 100c)

gas (212f)(100c) 

Term
water weighs 
Definition
8.33lbs per gallon
Term
primary way that water extinguishes fire is 
Definition

cooling 

smothering 

Term
as an extinguishing agent water depends on 
Definition

specific heat 

latent heat of vaporization 

exposed surface area 

specific gravity

Term
specific heat 
Definition
measure of heat absorbing capacity of substance 
Term
latent heat of vaporization
Definition
quantity of heat of absorbed by substance when it changes from a liquid to a vapor
Term
exposed surface area 
Definition
speed at which water absorbs heat increases in proportion to the water surface exposed to the heat. 
Term
specific gravity 
Definition
density of liquids in relation to water 
Term
water converted into steam occupies 
Definition
1700 times its original volume 
Term
true or false water reacts violently with burning combustibles 
Definition
true czz
Term
head pressure 
Definition
height of a water supply above the discharge orifice, (5psi per 10f)
Term
static pressure 
Definition
stored potential energy availible to force water through pipe, fitting, fire hose, and adapters.(at rest pressure)
Term
residual pressure 
Definition
part of total available pressure not used to overcome friction loss or gravity while forcing water through pipe fittings, fire hose and adapters
Term
flow pressure 
Definition
forward velocity pressure at a discharge opening while water is flowing
Term
water hammer
Definition
surge in pressure resulting from sudden stoppage of moving water 
Term
valves for water systems are divided into  
Definition
indicating and non indicating 
Term
two most common indicator valves 
Definition

post indicator valve (PIV)

and outside screw and yoke valve (OS&Y)

Term
Master Stream 
Definition

any fire stream that is to large to be controlled without mechanical aid.

(flows are greater than 350 gpm) 

Term
Difference between a monitor and a deluge gun 
Definition
monitors stream direction and angle can be changed while water is being discharged. Deluge angle and direction cant be changed while water is being discharged 
Term
turret pipe 
Definition
mounted on fire apparatus and connected by permanent piping, aka deck gun, or deck pipe 
Term
 ladder pipe 
Definition
master stream device used in conjunction with aerial ladders. 
Term
cellar nozzles 
Definition
also called distributor nozzles, used in basement fires 
Term
water curtain nozzle 
Definition
produces fan shaped stream, intended to protect combustible materials from the heat of an adjacent fire
Term
piercing nozzles 
Definition
aka penetrating nozzles, used to pierce aircraft in aircraft firefighting
Term
chimney nozzles 
Definition
designed for the end of a booster hose, distributes a fine mist of water, contoured for a chimney 
Term
flowmeters 
Definition
reflects how much water is moving through the discharge valve and consequently the nozzle.  (provides water flow in gpm)
Term
2 type of Positive displacement pumps 
Definition
rotary and piston 
Term
piston pumps 
Definition

piston moving up and down develops pressure to create vaccum 

 

Term
rotary gear pump 
Definition
uses gears to form an airtight and water tight pockets to move water from intake to outlet 
Term
centrifugal pumps 
Definition
non positive displacement pump, it  imparts velocity into water and converts it into pressure within the pump itself 
Term
centrifugal pump consist of two parts 
Definition

1.impeller - transmits energy in form of velocity to the water 

2. casing- collects water and confines it in order to convert the velocity into pressure 

Term
single stage centrifugal fire pumps 
Definition
single impeller, can pump up to 2,000 gpm
Term
multistage centrifugal pump
Definition
has an impeller for each stage mounted within a single housing. usually mounted on a single drive shaft. 
Term
pumping in parallell (volume)
Definition
each impeller takes water from a source and delivers it to the discharge. 
Term
pumping in series ( pressure)
Definition
all the water is taken from the intake manifold and is directed into the eye of the first impeller. (same stream of water goes through both impellers and doubles pressure)
Term
if pump packing is too lose
Definition
there will be an excessive amount of water leaking from the pump during operation. ( adversely affects ability to draft) 
Term
auxiliary engine- driven pumps 
Definition
powered by a gasoline or diesel engine independent of an engine used to drive the vehicle. 
Term
power take off drive 
Definition
pump driven by a driveshaft that is connected to the power take off on the chasis transmission. 
Term
front mount pumps 
Definition
front bumper is extended and a pump is mounted between the bumper and the grill. 
Term
midship pumps 
Definition
pumpers have the fire pump mounted laterally across the frame behind the engine and transmission
Term
hydrostatic pumps 
Definition
driven by a shaft from the front of the vehicle's engine. 
Term
rear mount pumps 
Definition
pump of the rear of apparatus 
Term
relief valves 
Definition

2 concepts 

1.relieves exces pressure on the discharge side 

2.relieves pressure on the on the intake side 

Term
pressure governors
Definition
regulates power output of the engine to match pump discharge requirements
Term
master intake gauge
Definition
measures positive pressure or vacuum. (how hot is the hydrant)
Term
tachometer 
Definition
records the engine speed in revolutions per minute. 
Term
engine coolant temp 
Definition
alerts drivers to engine overheating problems 
Term
discharge guages 
Definition
how much pressure you are discharging
Term
forward lay 
Definition
stopping at the hydrant, dropping the end of one or more supply lines at hydrant and proceeding to the fire location. 
Term
reverse lay 
Definition
lay from the fire source to the water
Term
cavitation 
Definition
water is being discharged faster than it is coming into the pump. ( running away from your water) 
Term
In regards to standpipe ops discharge pressure should not exceed 
Definition
200 psi (unless otherwise noted) 
Term
how does foam work 
Definition

separating(creates barrior between fire by following methods)

cooling- lowers temp of the fuel and adjacent surfaces 

suppressing- smothers fire

Term
class A foam 
Definition
hydrocarbon surfactants, reduces surface tension of the water in foam solution(provides better penetration for water) 
Term
class b foam 
Definition
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