Pump Ops Flashcards
In a wild fire attack the position of the apparatus is what?
The anchor.
When does brake fade occur?
When the brakes overheat from excessive use.
What area is between wild-land and rural area?
Wild land urban interface.
Older vehicles may be equipped with what type of braking system?
Hydraulic braking system.
If the operator on an aerial has the DCDL locked and hears tires scrubbing what should he do?
Not worry because it’s normal.
Brush trucks have the ability to do what?
Pump and roll.
Audio sirens out run the effective range of its audible warning device at speeds above what?
50 mph.
What are some of the problems with homemade pumpers?
They are top heavy.
2 short blasts of the air horn indicate what?
Backing up.
Water tenders must be capable of a portable water tank at what gpm?
1,000 gpm.
Play in the steering wheel of more than what % is not allowed?
10%
NFPA 1901 requires water tenders to be designed to be filled at a rate of ____ gpm?
1,000 gpm
When a water hammer occurs it goes all the way back to?
The water main.
It is dangerous and discouraged to ___ while filling trucks?
Filling through the tops of tanks.
Most common drafting problem?
Air leaks.
What is the proper flow rate %
100% of max flow rate at 150 psi
70% of max flow rate at 200 psi
50% of max flow rate at 250 psi
Most common relief valve?
Spring-controlled pilot valve.
Nozzle commonly used in aircraft fires, car fires, voids, attics?
Piercing nozzle.
What indicates the status of a vehicles alternator and charging system?
A meter.
What prevents water movement inside of tanks?
Baffles.
Vacuum gauge should read?
22 inches of mercury.
What is the symbol for mercury?
Hg
Brakes should be tested?
Annually.
When should volunteer dept’s do truck checks?
Weekly (After each call)
Inverters have how many watts?
1500 watts
Portable generators have how many watts?
5000 watts
Rescue fixed mounted generators have how many watts?
50,000 watts
Least capable auxiliary brake device?
Exhaust brakes
Why should you never rev diesel engines?
Damage internal components.
Pump capacity of 750 gpm or greater should have how many discharges?
2
Standpipe should be supplied at?
150 psi
All gauges should be calibrated within?
60 days
Driver operator is involved in what test?
Acceptance test
Pump certification is done by?
Independant testing organization. (CFPI)
How many feet is theoretical lift?
33.9 ft
How many feet is maximum lift?
25 ft
How many feet is a dependable lift?
14.7 ft
What type of gauge offers increased efficiency over a pilot gauge?
A flow meter
____ and drive slow when driving through smoke?
Sound the horn frequently.
Pumping a hose into a water tank during water shuttle operations will?
Prevent overheating
Newer or modern trucks use what braking system?
Air actuated brakes.
Air horns will not operate under?
80 psi.
A mid (maybe mini) pumper chasms weighs?
12,000 lbs
Brush truck gpm?
500 gal tank size and 500 gpm
Hand and palm placement for spotter during backing?
Palms facing spotter.
Hand and palm placement for spotter when telling the driver to move forward?
Palm away from spotter face.
Minimum distance around strainer for drafting?
24” or 2 ft
What helps control hard suction drafting hose?
Attaching a rope to the strainer.
How can most apparatus or equipment failures be prevented?
Performing routine maintenance checks.
Tank fill sizes?
1,000 gal or less-1”
1,000 gal or more-2”
Most common sizes for LDH supply line?
4” or 5”
Most collisions occur?
At intersections.
Best location for command at a scene?
Corner of building.
Weight of 1 gal of water?
8.35 lbs
When a pumper is connected to a hydrant and the 1st line is opened, and there is a drop in residual pressure 20% this would indicate the hydrant should be able to supply ___?
Two times the amount of water (1 additional setup)
Most common type of valve?
Ball valve
Nozzle pressure solid-master stream and fog-master stream?
Solid master stream 80 psi
Fog master stream 100 psi
A foam system that combines air under pressure with a foam solution?
Compressed air foam system (CAFS) Class A foam
What do you call the amount of travel the clutch has before it begins to disengage?
Free play
Conduct that constitutes a willful or reckless disregard for duty?
Gross negligence
According to NFPA 1911 tires should be replaced every?
7 years
All tires on apparatus must?
Match
GPM of master stream?
350 gpm or greater
Floating strainer may be used in water as shallow as?
2” of water
Floating pump capacity?
500 gpm
Examples of static water?
Dry hydrants, storage tanks, lakes, streams
Strobe lights that activate traffic emitters cause lights to?
Turn the signal green in the direction of travel
Steering wheel sensors along with accelerometers are also equipped with what?
Stability control sensors.
An operator must get in the cab and start the engine to perform what test?
Function test.
Turning off appliances to prevent overload is known as?
Load shedding
What is the only fluid you check while the engine is running?
Transmission
During a water shuttle operation what do you do after the first tender delivers water?
The dump site pumper begins to draft.
Agitation and turbulence are caused by ___ during pumping operations?
Critical velocity
Most common fire pump?
Centrifugal
Hub, shroud, vane, and impeller are parts of?
Centrifugal pump
Spiral section of the pump is called?
Volute
All apparatus weighing over ___ must be equipped with an auxiliary brake system?
36,000 lbs
When training on a tiller you might have to ?
Add a detachable seat for the instructor
Drivers may want to use ____ during emergency response?
Excessive speed
Most common elevating water devices are ___ tall?
(Maybe height of aerials)
50-75 ft
Foam proportion for 3%? ___ parts water and ___ parts foam?
97 parts water
3 parts foam
The D/O must ensure all occupants are wearing seatbelts. Confirmation must be made ___ before moving apparatus?
Verbally
When is the exhaust brake activated?
When you remove pressure off the accelerator (foot off the gas pedal)
What gpm’s does PTO drive limit pump capacity to?
500 gpm
What is the typical length for intake hose used for hydrant connection?
10’-20’
How often should a pump be tested?
Annually
What is the term for laying supply lines from the hydrant to the fire scene?
Forward lay
What is the term for laying supply lines from the fire scene to the hydrant?
Reverse lay
An apparatus equipped with a fire pump, whose rated capacity is less than 750 gpm is required to undergo the same certification test as a pumper over 750 gpm with the exception of?
The pumping engine overload test.
Engine pulls past or short of the hydrant to?
Allow the hose to curve
A counter clockwise turn on a hose connection between hydrants is to?
Prevent the pumper from forming kinks
___ use a pick up tube that uses the pressure differential from the stream passing through the Venturi?
Eductors