NFPA 1002 Driver/Operator Flashcards
Duties of a driver operator
- Safely operate apparatus
- Operate equipment
- Inspect / maintain apparatus & equipment
MDH is what size
2.5”-3” (64mm-77mm)
When your apparatus starts to skid, you do…
- Stay off your brakes
- Steer where you want to go
SDH is what size
1”-2” (25mm-50mm)
Hydrants have what kind of valve
Gate valve
In what order do you shut down a relay operation
From the attack pumper, to the supply pumper
Exhaust brakes work how
Shutter valve behind the turbo. The valve closes and creates back pressure when run back through the engine
A fire pump’s capacity is established how
From a draft
Expansion ratio of a high expansion foam, and what its used for
200:1 - 1000:1, it is used for confined space firefighting
Define: Foam
A stable mass of small air filled bubbles
How much do you add for residual when calculating an attack pumpers calculated flow
140 kpa (make it easy and remember 150 kpa)
What allows an additional pump to be added to a relay operation
A relay valve
A dump tube should be flowed at less than…
100 GPM (400 L/min)
Water 0-100 degrees C is what state
Liquid
Typical fog nozzle kpa
700 kpa (100 psi)
NPDP PPS stands for what
Net pump discharge pressure, from a positive pressure source
A hydrant painted red flows
500 GPM or less
Where does NPDP come into play
Its the amount of pressure created by the pump after receiving pressure from a positive pressure source (hydrant or another engine).
Define: Brake fade
Using the brakes to the point of heating up, and becoming ineffective
What does a primer pump do
Pumps the air out of a pump
Elevation loss is about how much
10 kpa per meter
30 kpa per story
Level 2 staging requires what
A staging officer
Class A foams are used on
Ordinary combustables
Foams ability to minimize fuel pick up is called what
Resistance
NFPA 1901 requires wheel chocks to be able to hold the fire apparatus on ____ grade while the tranny is in neutral
20% grade
Large diameter intake connections use what type of valve
Butterfly valve
On scene, fire apparatus are classified in what two categories
Working & Parked
All apparatus are operated in two ways
Emergency response & on scene operations
Define: Miscible
Readily mixes with water
Class B foams are used on
- Flammable liquids
- Hydrocarbons
- Polar solvents
The formula to figure out PDP is
PDP = NP + FL
Elevation pressure is approx how much per meter
10 kpa
Huge water lifts (drafting) what do what to your discharge abilities
Decrease
Electromagnetic retarders work how
They create and opposing magnetic field around the drive shaft which in turn slows how fast the drive shaft is spinning, slowing the vehicle.
Another name for the 50% test
250 psi test (1723 kpa)
What is the final product of mixing water, foam concentrate, air, and mechanical agitation
“Finished foam”
