Engineer Flashcards
Fluids that can be checked & maintained by station crews.
Motor oil, transmission fluid, coolant, DEF, & power steering fluid.
When viewing the underside of the engine, what should be checked for leaks?
Motor, transmission, pump transfer case, & drive train
Hydraulic tips should be stored with a _______ gap between the tips.
1/2”
Safety or operational concerns shall be brought to the attention of the _________________immediately with an appropriate logbook entry.
Company officer
Booster tank and foam tank levels must be checked by ________________ into the tank
Visual observation.
Proper air brake pressure for front & rear brakes.
> 100 PSI
Minimum tread depth:
4/32” or when tread wear indicators are even with the tire tread.
Once started, the motor must run until it reaches ____________________.
Normal operating temperature.
Portable O2 tanks- ensure tank pressure is_______________.
> 1,000 PSI.
Do not trigger the air chisel unless the chisel head is in contact with a _______________.
Solid material
Air chisel bottle pressure should be______________.
> 4,000 PSI
Chain saw. Use ________________ for bar oil lubricant.
Motor oil
Add ________________ to newly acquired gas.
Fuel stabilizer
Rotate older gas to use with _________________and keep fresh gas on apparatus.
Lawn equipment
Apply wax ____________or in accordance with the company maintenance schedule.
Monthly
Bleed all _______ air tanks beneath the engine.
4
(For air thank beneath the engine)
Open the valve and bleed until the discharging air is ________________.
Free of moisture
Ensure strainers are present in __________intakes.
2 1/2”
Clean all threads on the pump and appliances and apply ___________ as needed.
Grease
The intake valve shall be removed and cleaned. Inspect internal casing for rust or sediment buildup and proper operation of the valve. Clean and lubricate the Storz connection gasket, internal threads (piston intakes) and bleeder valve. If the swivel does not move freely apply __________________ and work until loose.
Soapy water
Back-flush
With the pump disengaged pressurize the _______________side of the pump from a hydrant.
Discharge
Chainsaws shall be thoroughly inspected and cleaned. Inspect air filter, remove, and clean if indicated. Remove chain assembly and clean chain drive. Use ______________ to remove debris from hard to reach areas.
Air pressure
Clean air tools with ______________ and dry thoroughly
Soapy water
Apply __________ drops of air tool oil into the blade end and operate.
5
Check ________________ dates on each oxygen bottle and SCBA bottle.
Hydrostatic
Portable extinguishers.
The inspection label (right) indicates the date of the __________inspection.
Last
The come- along should be cleaned with a ____________.
Dry cloth
This refers to Liquid Wrench, WD-40, or similar water- displacing lubricating oil, typically in an aerosol can.
Light oil
Used on roll-up door tracks and slide out compartment trays. It leaves minimal residue. Do not use silicone on other moving parts. Remove dirt prior to applying silicone.
Silicone spray
Recommended to ease the movement of pump valve handles. It can be applied to the remote control handle shaft and mechanism, from the pump panel to the valve handle attachment. Remove dirt prior to applying graphite.
Graphite
The only grease permitted is ________________machinery grease. Apply to appliance and pump threads as needed.
Food grade
Engine positioning
EMS incident.
Single family residence.
When spotting the engine give priority to the location of the rescue unit and stretcher access. Consider the safety of the patient when loading. On busy streets use the engine to protect the patient loading area.
Engine positioning.
EMS Incident
Apartments, Assisted Living, & Multi-Story Buildings
Due to limited access to entrances, lobbies, and courtyards, the engine may need to park well removed from the location. In tight complexes it may be necessary to park outside, leaving the closest access for the rescue unit.
Engine positioning
Single family residence
Structure Fire
The first arriving engine and ladder company should be spotted in front of the structure in most cases. Position the engine for placement of attack lines while leaving room in front of the structure for the ladder company.
Engine positioning
Multi-story building
Structure Fire
Engine placement is the same as for single story structures, but the engine should be placed to leave the building corners open. This permits the ladder company to place the turntable in a position to reach two sides of the structure.
Newer engines need ________feet of space on the officer’s side to lower the ladder rack.
5
When backing, use a spotter on the engineer’s side, ________feet from the tailboard.
5-10
The (water) main sizes range from __________in diameter and average 70 PSI static pressure.
6”-24”
In some cases, hydrant pressure is provided by ___________pressure from water towers.
Head
The communities of _______________________ operate their own water utilities and the system parameters may differ from the majority of Jacksonville served by JEA.
Atlantic Beach
Neptune Beach
Baldwin
All city hydrants are equipped with a ___________inlet and are supplied by the water main system.
6”
What color are city hydrants.
Yellow
Supply main sizes for city hydrants.
Residential: 6”-10”
Commercial: 8”-24”
The diameter of the backflow preventer is the same as the ______________.
Water main
Static pressure for private hydrants at industrial facilities.
Up to 175 PSI
Private hydrant color.
Red
Note- as of 2016, hydrants are transitioning to the color white.
NFPA hydrant color code.
Blue – 1500 GPM or more
Green – 1000 – 1499 GPM
Orange – 500 – 999 GPM
Red – Below 500 GPM
_______________hydrants may be found on reclaimed water mains. These mains are for irrigation and not intended for firefighting use. Hydrants are installed on these mains for maintenance flushing.
Purple
Sound barrier walls along limited access highways may incorporate _____________(about 12”) to reach hydrants on nearby streets.
Access holes
Drafting utilizes _______________pressure to supply a fire pump through hard suction hose.
Atmospheric
Fire department pumps are equipped with a _______________ to reduce pressure inside the pump below atmospheric pressure.
Primer
Each JFRD engine has a ________(size) TANK-TO-PUMP valve.
3”
Flow from the booster tank is limited to ____________ GPM on all JFRD engines.
700-800
Booster tanks shall be refilled only from ___________________ and always from the nearest supply point.
City hydrants
A dry hydrant consists of a pipe with a threaded 4- 1/2” steamer connection attached to a static water supply. The pipe is commonly PVC but could be cast iron or stainless steel.
4 1/2”
JFRD engines are built by Pierce and are fitted with midship mounted Waterous ________________ pumps.
Centrifugal
Three primary sections of a modern fire pump.
Intake manifold (lower half of the pump body.) • Discharge manifold (upper half of the pump body.) • Centrifugal pump assembly (including impeller(s).)
The pump transfer case mounted below the pump transfers power from the diesel motor to the drivetrain (in the ROAD position) or to the ______________ (in the PUMP position)
Pump impellers
JFRD engines are powered by six-cylinder turbo-charged diesel motors, manufactured by __________________.
Caterpillar (C12 or C13)
~Or~
Cummins (ISL series.)
The impeller has a _________________design allowing water under pressure to pass through the impeller when the pump is not engaged, and the impeller is stationary.
Flow- through
Centrifugal pumps cannot pump ______due to their open design.
Air
The impeller discharges water into
the _____________the chamber which directs the pressurized water into the discharge manifold.
Volute
As motor speed (RPM)
increases, the velocity of the impeller(s)
increases. This results in a corresponding increase in ___________________ (PDP).
Pump discharge pressure
The pump shift control is a ________________switch located in the cab at the engineer position. There are 3 positions – ROAD, NEUTRAL, and PUMP. The pump shift controls a ring gear within the transfer case.
Pneumatic
Centrifugal pumps are tested by Underwriters Laboratories (UL) in accordance with ______________.
NFPA 1911
A data plate is affixed to the pump panel with results of the initial pump test. The pump test measures volume at three pressures while drafting. The volume at _____________is called the rated capacity.
150 PSI
A 1,500 GPM pump must pump.
100% of rated capacity at 150 PSI (1500 GPM)
70% of rated capacity at 200 PSI (1050 GPM)
50% of rated capacity at 250 PSI (750 GPM
The data plate (pump testing) may also indicate the ___________________.
test RPM & governed speed.
It is important to understand that centrifugal pumps have the ability to pump more than their rated capacity if supplied from a _____________________.
Pressurized source
A two-stage pump can operate in one of two settings - _____________________. In PRESSURE each impeller provides pressure in series.
Pressure or volume.
The _________________ position is also called parallel or capacity.
Volume
When pumping beyond 50% of a pump’s rated capacity, you must be in ________________.
Volume
Changing between the two settings (volume or pressure) is accomplished by the _______________.
Transfer valve.
The transfer valve is electrically-driven but also has a manual override in case of electric switch failure. Utilize a 3⁄4” socket and socket wrench to change settings if the electric valve fails.
3/4”
The normal position of the transfer valve is _______________which will produce maximum pump performance for the majority of pumping scenarios.
Volume
JFRD engines _______________ intakes. There are two 6” steamer intakes and two 2-1/2” auxiliary intakes (often called “pony” intakes) on each engine. Some engines have an additional 5” intake on
the front or rear with an electrically
controlled valve.
4 or 5