State Test Flashcards
In a wildfire attack the position of the apparatus is the what?
The Anchor
When does brake fade occur?
When the brakes overheat
What area is between wild-land and rural area?
`Wildland urban interface
Older vehicles may be equipped with what type of braking system?
Hydraulic braking system
The vehicle weight with no water, tools, or passengers is what?
Curb weight
DEF is used to reduce what?
Nitrogen Oxide
If the operator on an aerial has the DCDL locked and hears tires scrubbing what should
he do?
Not worry because it is normal
Brush trucks have the ability to do what
Pump and Roll
Audio sirens out run the effective range its audible warning device at speeds above
what?
50mph
What are some of the problems with homemade pumpers?
They are top heavy
2 short blast of the air-horn indicate what?
Backing up
Water Tenders must be capable of a portable tank at what GPM?
1,000 GPM
Engine lugging is caused by?
The manual transmission being into too high of a gear
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 rate of ______ gpm?
1000
When water hammer occurs it goes all the way back to?
Water Main
Back Pressure is also known as?
Head pressure
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 percentage?
(100%) of their maximum flow rate at 150 PSI
(70%) of their maximum flow rate at 200 PSI
(50%) of their maximum flow rate at 250 PSI
Most common relief valve?
Spring-controlled pilot valve
Nozzle commonly used in aircraft fires, car fires, voids, attics?
Piecing nozzle
What indicates the status of vehicles alternator and charging system?
Amp meter
What prevents water movement inside of tanks?
Baffles
Vacuum gauge should read?
22 inches of mercury (-75kPa)
What is the symbol for mercury?
HG
`Brakes should be tested?
Annually
When should volunteer departments do truck checks?
Weekly (After each call)
Inverters watts
1500 watts
Portable generators watts
5000 watts
Rescued fixed mounted generators watts
50,000 watts
Least capable auxiliary brake devices?
Exhaust brakes
Why you should never REV diesel engine?
Damage internal components
Pump capacity of 750 GPM or greater should have how many discharges?
2
Standpipe should be supplied at what PSI?
150 PSI
All gauges should be calibrated within?
60 days
Driver operator is involved in what test?
The acceptance test
Pump certification is done by?
Independent testing organization (CFPI)
What is theoretical lift height?
33.9ft
A pump that develops a perfect vacuum at its suction end can lift a column of water
What is maximum lift?
25ft
Hight a column of water may be lifted in sufficient quantity to provide reliable fire flow is ?
Dependable Lift, 14.7ft
What offers increased efficiency over a pitot gauge?
A flow meter
____ and drive slow when driving through smoke
Sound the horn frequently
Objects in motion tend to stay in ____
Motion (law of inertia)
Pumping a hose into water tank during water shuttle operations does?
Prevents overheating
Trucks built after the 90’s on are usually equipped with?
ABS breaks
Newer trucks use what break system
Air actuated breaks
Air horns will not operate under?
80 PSI
If an apparatus does not reach adequate air pressure in the allotted time, it may be
necessary to do what?
Add an electric air compressor
A midi-pumper chassis weight
12,000lbs
2 short horn blasts indicate?
Backing
Brush truck GPM?
500 tank size and 500 GPM
Hand and palm placement for spotter during backing?
Palms facing spotter
Hand and palm placement for spotter telling driver to move forward?
Palm away from spotter face
Minimum distance for drafting?
24’’ (2 feet)
What helps control hard suction drafting hose?
Attaching a rope to the strainer
How can most apparatus or equipment fails be prevented?
Preforming routine maintenance checks
Tank fill sizes?
1000 gallons or less – 1 inch
1000 gallons or more – 2 inches
Required stopping distance of new trucks at 20 mph
35ft or less
Most common sizes for LDH supply line?
4 or 5 inches
Most apparatus damage occurs during?
Backing
Most collisions occur?
At intersections
Best location for command at a scene?
Corner of building
Weight of one gallon of water?
8.35
When a pumper is connected to a hydrant and with the first line open the is a drop in
residual pressure of 20% this would indicate that the hydrant should be able to supply?
Two times the amount of water (one additional setups)
Most common type of valve?
Ball valve
Nozzle pressures?
Solid stream (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
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 an apparatus must?
match
GPM of master stream
350 GPM or greater
Floating strainer may be used in water as shallow as _____
2 foot of water
Floating pump capacity is?
500gpm
Examples of static water?
Dry hydrants, storage tanks, lakes, or streams
Strobe lights that activate traffic emitters cause lights to?
Turn the signal green in the direction of travel
ABS systems don’t stop the vehicle faster but what do they do?
Greatly increase controlled stops
When is the engine speed check down?
With no load
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 preform what test?
Function test
Turning off appliances to prevent overload is known as?
Load shedding
What turns things on in intervals as to not do it all at once?
Load sequencers
What is the only fluid you check while the engine is running?
Transmission
What is used for an efficient connection to a natural water source with a pre-piped
system?
Dry hydrant
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 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 or greater
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
Must common elevating water devices are _____ tall?
50-75ft
Foam proportion?
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 break exhaust activated?
When you remove the pressure off of accelerator (foot off the gas pedal)
What GPM’s does PTO drive limit pump capacity to?
500 GPM’s
What is the typical length for intake hose used for hydrant connection?
10-20ft
How often should a pumper 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
Apparatus equipped with a fire pump whose rated capacity is less than 750 GPM are
required to undergo the same certification test as a pumper over 750 GPM with the
exception of?
Pumping engine overload test
Ground reservoirs are man made impoundments that have the same characteristics of a pond or small lake they are most commonly found at_____
A. Commercial Properties
B. Industrial Properties
C. Municipal Water Treatment facilities
D. All of the above
D. All of the above
Pump piping on a fire apparatus must be able to withstand a hydrostatic test of ____ PSI
500
NFPA 1901 braking tets requires that a new apparatus be brought to a complete stop from a speed of 20 MPH within ____ feet
35
All fire apparatus with a rated pump capacity of 750 gallons or larger must be equiped with how many 2-1/2 inch discharges?
2
Because a total Vacuum is not possible in field operations, fire department apparatus have a max lift of ____ feet.
25
The items a D.O. is responsible should be dictated by?
Dept. SOP
The items a D.O. is responsible should be dictated by?
Dept. SOP
When conducting a pump service test, the atmospheric air temp should not be above ____ degrees fahrenheit.
100
which of the following is false?
A. Apparatus cleanliness is only for maintaining good public relations.
B. Fire apparatus should be kept clean underneath as well as on top.
C. Keeping the apparatus body clean also helps promote a longer vehicle life.
D. Over cleaning can have a negative effect.
A.
On apparatus with air brakes, NFPA requires the air pressure to build to a sufficient level to allow the vehicle operations within ___ seconds of starting
60
Which of the following is false concerning washing the exterior of an apparatus?
A. during the first 6 months after an apparatus is received, wash with cold water.
B. During the first 6 months after an apparatus is received, wash with hot water.
C. never remove dust or grit by dry rubbing.
D. try to wash mud or dirt before they dry.
B.
Elevating water devices typically range in height from ____ to____ feet
50-75
Rescue vehicles commonly have generators capable of _____ watts
50,000
When pumping into a fire dept. connection to a sprinkler system, the water passes through a valve which prevents water flow from the sprinkler system backing into the FDC. This is a ____ valve
Check/clapper valve
When using 2-1/2 or 3 inch hose lines to supply the pumper directly off hydrant pressure, it is recommended that the lines be no longer than ____ feet.
300
Intake hose sections are commonly 10-___ feet long
50
Ideally, the command vehicle should be positioned ____ of a building
On the corner
engine companies that carry large quantities of ground ladders, but do not have main aerial devices is a?
Quad
Apparatus equipped with a fire pump whose rated capacity is less that 750 GPM are require to undergo the same certification test as a pumper over 750 GPM with the exception of?
Pumping engine overload test
When conducting a vacuum test, run the priming device until the test gauge shows 22 inches of mercury developed. reduce the amount of mercury developed 1 inch for every ___ feet of altitude.
1000
When conducting a vacuum test, run the priming device until the test gauge shows 22 inches of mercury developed. reduce the amount of mercury developed 1 inch for every ___ feet of altitude.
1000
NFPA 1901 states that piping should be sized so that pumpers with a capacity of 500 GPM or less should be capable of flowing ____ GPM from their booster tank.
250
When supplying a sprinkler system, it is a general rule of thumb one 1000 GPM rated pumper should supply the fire Dept. connection for ____ sprinklers that are estimated to be following
50
When drafting, the max theoretical lift is ___ Feet
33.9
Apparatus with air brakes are to be equipped with an air pressure protection valve that prevents the air horn from being operated when the pressure in the air reservoir drops below ____ PSI
80
Which of the following is false as it pertains to rear mounted pumps?
A.Rear mounted pumps provide a more even weight distribution on the apparatus chassis.
B. Rear mounted pumps give the D.O. more protection from traffic exposure.
C.Rear mounted pumps allow the apparatus to have more compartment space.
D.Rear mounted pumps are becoming more popular for fire Dept.s
B.
According to NFPA 1901, a mobile water supply apparatus must carry at least ____ gallons
1000
Portable generators are designed to provide power with___watts of power being the largest.
5000
Which statement bellow is false?
A. Industrial, airport, and municipal fire departments commonly have pumpers capable of discharging firefighting foam on class B fires.
B. Industrial foam pumpers are built according to NFPA 11C only.
C. Industrial, airport, and municipal fire departments commonly have pumpers capable of discharging firefighting foam on ordinary combustible fires.
D. Industrial foam pumpers are built according to NFPA 11C and NFPA 1901.
B.
When positioning an apparatus for protecting a structure threatened by a wild land fire, which is false?
A. Park on roadway
B. Park on the leeward side of the structure.
C. Keep cab doors closed and windows rolled up.
D. Place the apparatus air conditioning mood in recirculation mode.
A.
Pumps are hydrostatically tested at 250PSI for ___ Minutes
3
the reaction of the pump which gradually increases in cross-sectional areas as it nears the discharge outlet of the pump is the ___?
Volute
When more than one emergency vehicle is responding along the same route, units should travel at least ____ to ____ feet apart.
300 to 500
A conventional power take off unit limits the capacity of the pump to about ____ GPM
500
which statement bellow is incorrect?
A. The first statement is learning to drive safely is to develop a safety conscious attitude.
B. It’s important that the D.O. remain calm and drive in s safe manner.
C. If a F.F. rides on the tailboard he must use a safety bar.
D. the area in which hose loading is being performed must be closed to vehicle traffic.
C.
A tank fill ine should be provided from the discharge side of the pump allowing?
A. The tank to be filled without making any additional connections when the pump is being supplied by an external source.
B. A means of replenishing the water carried in the tank
C. For circulation of water through the pump to prevent overheating when no lines are flowing.
D. All of tje above.
D
Concerning the foam proportioning equipment test, which of the following is true.
A. Annual testing required.
B. Semi-annual testing is required.
C. Quarterly testing is required.
D. No time frame for testing required, however, D.O. must be able to perform the test.
D.
To facilitate proper placement of pumping and aerial apparatus, you must decide to use the inside/outside method of of apparatus placement. If the building is less than ___ stories tall, engine companies should park closest to the building and aerial pieces on the outside.
5
A fire apparatus pump is able to deliver ___% of its capacity at a 15 foot lift.
70
True or false.
Emergency vehicles are generally exempt from laws that require vehicles to stop for school buses that are flashing signal lights.
False
What is the pump discharge pressure when supplying a ground monitor using a 500 GPM fog nozzle with 100 PSI Nozzle pressure, supplied with 2 2-1/2 inch hose lines each 250 ft in length. (using long formula)
162.5 PSI
___-___ GPM is the max flow recommended for one line of 2-1/2 inch hose.
250-300
On a solid stream nozzle, ___ PSI. nozzle pressure is considered to be standard on handlines, while ___ PSI nozzle pressure is considered to be standard on master streams.
50, 80
which of the following is a correct statement.
A. Positive pressure are measured in pounds per square inch.
B. Negative pressure is measure in inches of mercury.
C. Any pressure less than atmospheric pressure is referred to as a vacuum.
D. All are correct.
D.
One cubic foot of water contains ___ cubic inches of water.
835
Find the desired pump pressure when supplying a 2-1/2 inch hoseline with a 1 inch tip with 50 PSI nozzle pressure, laid up to the third floor. the supply line is 250 feet long. (use rule of thumb)
80 PSI
Building and fire codes require wet systems with booster fire pumps built in for structures over how many floors?
5
At a fire, 6 sprinkler heads have opened. they are operating at 30 PSI. what is the total discharge?
180GPM
In fire hydraulics, ____ is that part of the total pressure that is used to overcome friction while forcing water through a hose
Friction loss
Ordinary hose sinuosity (zig-zagging) will add an additional ___ % friction loss.
6
Pressure of one pound per square inch will raise a column of water how many feet?
2.301
If a pumper is connected to a hydrant 200 feet from the standpipe siamese, and two 1-1/2 hand lines are operating on the 8th floor, the pumping operator should maintain ___ PSI engine pressure.
150
If 250 gpm is flowing through a hose line, and the pressure is increased while the nozzle opening is reduced so that 250 gpm remains flowing, the friction loss will?
Increase
there shall be an OS&Y valve located between the fire Dept. siamese connection and the standpipe riser.
There is a one way checkvalve positioned in the system to keep contaminated water from entering the main system.
Which statement is true? A. Both true B. 1st true C. Both False D. 2nd true
D.
If the discharge from a 1-1/4 tip 300 gallons per minute, what most nearly is the nozzle pressure?
42 PSI
There are three containers filled with water, the 1st container is 1 square inch at the base and 3 feet high. The 2nd container is 3 square inches at the base and is one foot high. The 3rd container is 9 square inches at the base and is four inches high. which container has the heaviest total weight?
1st container
Mercury is how many times heavier than water?
13.6
What is the pump discharge pressure with a layout using 200 feet of 2-1/2 hose wyed into 2 1-1/2 hose lines, each 100 feet long with fog nozzles discharging 100 gpm at 100 psi nozzle pressure? (rule of thumb)
148 psi
What will be the loss due to friction in a single line of 3 inch hose with 2-1.2 couplings, 400 feet in length, carrying 300 gpm?
34 PSI
Rounding off to the nearest hundredths, determine the area of a circle whose diameter is 10 inches.
153.93 square inches
When relay pumping, the supplying pumper should supply ___ pounds plus friction loss, but in no case should engine pressure exceed ___ PSI
20, 250
1 gallon of water = ___ cubic inches
231
For a given velocity of flow, the friction loss per hose is approximately the same no matter what the pressure on the water may be.
Friction Loss is determined by the speed or velocity of the water through the fire hose.
is each statement true or false?
Both False
Which of the following is true?
A. Flow pressure- pressure at a discharge opening while water is flowing
B. Atmospheric pressure- pressure remaining at the source while water is flowing
C. Static pressure- weight of air surrounding us and at sea level is 14.7 lbs per square inch
D. Residual pressure- Pressure of water when motionless or no hindering forces are affecting it as long as it is not moving.
A.
When the compound gauge indicates 15 inches of vacuum, to what height will water rise in a suction hose?
21 feet
In the same size hose friction loss varies approximately ___
inversely as the square of the velocity of flow
If 50 psi nozzle pressure is being supplied to a 1-1/8 nozzle tip on a 2-1/2 handline what is the nozzle reaction?
100 pounds
If a circular tank 12 feet in diameter and 15 feet tall is 3/4 full of water and water is then removed at 500 gpm, how long would it take before the tank is completely empty?
19 min
E1 is supplyinh E2 with a single hoseline 2-1/2 hose 600 feet in length. E2 is supplying 2 2-1/2 handlines each 150 feet in lenght, using 7/8 inch tips with 50 PSI nozzle pressure and discharging 150 gpm. what is the pump discharge pressure from E1
146 PSI
Sprinkler and standpipe systems are identified by?
Circular or rectangular plates.
Using rule of thumb, what is the friction loss in a single 2-1/2 hoseline 300 feet in length with a 1 inch tip operating at 50 PSI?
30 PSI
What is the friction loss in 450 feet of 2-1/2 hose when flowing 250 GPM?
56 PSI
What is the nozzle reaction in pounds from a 1 inch nozzle discharging a stream at 80 PSI nozzle pressure?
120 pounds.
A 2-1/2 hose line with no nozzle attached (open butt) is flowing at 25 psi, how many GPM is being discharged?
835
when the main shut-off valve on a sprinkler system is closed the water pumped into the sprinkler siamese will ___
by-pass the valve and reach the heads
for standpipe evolutions, if the pumper is more than 100 feet from the fire Dept. siamese connection on a building, an additional ___ PSI must be added for each 100 feet of additional hose
10
true or false
Pressure is simply force per unit area and is expressed in pounds per square inch and or pounds per square foot.
true
theres a limit to the speed at which the stream of water can travel through a hose line. If the speed is increased beyond these limits, the friction loss becomes so great that the entire stream is agitated by resistance, this turbulence is called?
critical velocity
When a sprinkler system is being charged, a reading of ___ pounds of pressure should be maintained at the discharge gauge.
150
What is the discharge from 10 sprinkler heads in 30 minutes if they’re operating at 30 PSI?
9,000 gallons
What is the discharge in GPM from a 1-1/4 tip with 50 PSI nozzle pressure?
327
Stand pipe systems are rarely built to withstand more that ___ PSI.
225
