Engineers Manual Flashcards
A daily inspection shall be performed at the beginning of each shift. Each discrepancy shall be recorded on the _____________.
Daily Apparatus Report (Fireweb)
Safety or operational concerns shall be brought to the attention of the _________ immediately with an appropriate ________ entry.
- company officer
- logbook
Who do you contact for any maintenance related issues?
Tactical Support Facility (TSF)
Who do you notify immediately when any JFRD equipment is noted as being lost, found, stolen, or damaged in any way?
The company officer
According to NFPA and NIOSH, what level of exposure is considered safe for diesel exhaust?
There is no level of exposure that can be considered safe. Take all measures to avoid exposure to diesel exhaust.
When ensuring proper fluid levels, what fluids may you add if needed?
- motor oil
- transmission fluid
- coolant
- power steering fluid
- diesel exhaust fluid
How do you check booster tank and foam tank levels?
By visual observation into the tank and compare visual levels to gauges for accuracy.
When ensuring proper operation of brakes, you should also ensure proper air brake pressure for both front and rear to be _________.
> 100 psi
When looking over tires and wheels on the apparatus , you want to check ___________. Minimum tread depth is _______________.
- tire pressure
- lug nuts
- axle seals
- tread depth
- 4/32” or when tread wear indicators are even with the
tired tread
When viewing the underside of the engine for pump and tank leaks, what else are are you checking?
- motor
- transmission
- pump transfer case
- drivetrain for fluid leaks
When checking over your portable oxygen you want to ensure that your tank pressure is ________ and oxygen delivery adjuncts are properly stocked.
> 1000 psi
Bottle pressure for an air chisel should be _________.
> 4000 psi
Each SCBA and spare bottle should be checked in accordance with ___________.
*SOG 421
What do you use for bar lubricant on a chainsaw?
motor oil
For hydraulic pump and tools, check the levels of ____________, ensure proper operation of ____________, and store hydraulic spreaders with ______ between the tips.
- gas, oil and hydraulic fluid
- motor and pump
- 1/2” gap
When checking oil and coolant levels of a generator, how long should you run it to be fully warmed up?
Approximately 5 minutes
Shutting off fuel supply to portable gas motors and running it until the motor stalls does what?
Clears the fuel lines and prevents damage from gasoline additives.
Remove dirt and old lubricant from roll up door tracks and apply _____________.
silicone spray
What do you apply to door hinges?
light oil
What do you apply on the threads of pump and appliances, and where are we ensuring that strainers are present?
- apply grease as needed
- 2 1/2 “ intakes
What are you inspecting the internal casing of an intake valve for?
Rust or sediment buildup and proper operation of the valve.
If the swivel does not move freely…
apply soapy water and work until lose.
Steamer intake strainers function as a ______, that protect the pump housing from rust. Oxidization of strainer is normal with regular use. If deterioration becomes excessive _______ will provide a replacement.
- anode
- TSF
When back flushing the pump, the pump must be _________, and the discharge side of the pump must be ___________ from a hydrant.
- disengaged
- pressurized
To ensure pump is primed:
- place engine in pump gear
- open TANK TO PUMP valve
- operate primer
All hand tools shall be cleaned and moving parts ___________.
lubricated
Check axe head for __________, inspect handles for damage. Use _________ to clean then dry throughly. Apply ________ to steel surfaces and moving parts. Apply __________ to wood handles as needed.
- tightness
- soap AND water
- light oil
- linseed oil
Ladders shall be cleaned with _________ and all moving parts manipulated. Use _________ sparingly to lubricate roof hooks.
- soapy water
- light oil
Clean nozzles with __________ and a _______. Immerse nozzle in ___________ and operate all moving parts. Do not use lubricants.
- soapy water and a soft brush
- warm soapy water
If swivels are frozen or stiff on hard suction hoses, apply ____________ and rotate the swivel.
warm soapy water
What should you do with dirt and debris from ladder compartments?
rinse
What should you do with dirt and debris from hard suction hose compartments?
clean
To remove debris from hard to reach areas on a chainsaw, what should you use?
air pressure
Clean air tools with _________ and dry throughly. Lubricate each blade with _________. Apply _____ of air tool oil into the ______ and operate.
- soapy water
- light oil
- 5 drops
- blade end
When checking hydrostatic dates on each oxygen bottle and SCBA bottle, refer to _______ for testing requirements.
SOG 421
The inspection label on portable extinguishers indicate the date of ____________.
last inspection (annual inspection)
Rope shall be inspected in accordance with….
SOG 419
Clean a high lift jack with ______ and dry throughly. Wipe down entire tool with _________ including moving parts.
- soapy water
- light oil
If dirty, clean chains with _________ and dry throughly. Wipe down length of chain sparingly with _________.
- soapy water
- light oil
Clean a come - along with _________. Use _______ sparingly on moving parts. Do not apply any lubricant to the ________, if that gets wet or exposed to moisture it must dry throughly. Inspect handle for _________.
- a dry cloth
- light oil
- wire rope
- straightness
All lubricants must be used ______. Excess oil or grease can attract dirt and compromise proper operation.
sparingly
Light oil refers too…
- liquid wrench
- WD 40
- a similar water displacing oil typically in an aerosol can
Two-cycle oil…
added to gasoline to lubricate two cycle engines
Silicone spray…
use on roll up door tracks and slide out compartments
do not use on any other moving parts
Graphite…
pump valve handles
Grease…
only grease permitted is “food grade” machinery , apply to appliance and pump threads as needed.
Fuel stabilizer…
add to newly acquired gasoline according to the label
DEF…
used in some engines to reduce nitrogen oxide emissions
If an engine is out of service for _______ or any period that ________, a complete _________ shall be performed immediately, prior to swapping equipment and returning to service. Ensure proper operation of whatever component was serviced.
- 24 hours
- spans two shifts
- daily inspection
If serviced was performed and the engine returned on the same shift, the following checks must be completed prior to returning to service:
- visual verification that booster tank is full
- verify pump & governor operates properly in both modes
- verify proper brake pressure and brake operation
- ensure all equipment is accounted for
When spotting the engine at a single family residence , give priority to the location of the rescue unit and stretcher access. On busy streets __________________.
use the engine to protect the patient loading area.
What is the primary consideration for engine placement at roadway incidents?
safety of patient and responders
On a roadway incident at night, with the apparatus facing oncoming traffic, what should you do to improve night vision of approaching vehicles?
turn off headlights
Once the engines motor is started it must run ____________. Verify normal readings on all cab-mounted gauges.
until it reaches normal operating temperature
The first arriving engine at a single story structure fire (signal 25) should position the engine for _____________.
placement of attack lines while leaving room in front of structure for the ladder company.
With a multi-story structure, engine placement is the same as for a single story structure except engine placement should be placed to leave the ___________ to allow the ladder to place the turntable in a position to reach two sides of the structure.
building corners open
Tactical & safety considerations for all apparatus placement at structure fires are :
- do not park under power lines
- do not park too close to involved structures
- leave room to deploy hose lines
- keep hose away from exhaust pipes
- leave the rear unobstructed to facilitate ground ladder
and tool access
Newer engines need how much space on the officers side to lower the ladder rack?
5 feet
When backing, spotters placement is where?
on the engineers side, 5 to 10 feet from tailboard
Main sizes range from ________ in diameter and average _________ static pressure
- 6” to 24”
- 70 psi
An alternative to the water main system is _______. These include __________
- a static source
- lakes, rivers, swimming pools, storage tanks, retention
ponds, portable tanker basins.
What size are the inlets on all city hydrants supplied by the water main system?
6 inches
The flow (GPM) from a hydrant will vary based on what?
- the diameter of the water main
- water main pressure
On yellow city hydrants, what are the thread sizes for steamer and side outlets?
- 4 1/2”
- 2 1/2”
On yellow city hydrants, what is the static pressure and size of supply mains for both residential and commercial?
- approximately 70 psi
- 6” to 10”
- 8” to 36”
On a yellow city hydrant if a steamer is damaged or not accessible what can be utilized to still produce a flow with significant volume?
- 2 1/2” discharge into a 5” hose
- you can use one 2 1/2” connection or use both to
maximize flow
What is the diameter of the back flow preventer on a private main?
the same size as the water main
What is the static pressure on private fire hydrants at industrial facilities ?
- UP TO 80 psi
What is the static pressure and size of supply mains for private fire hydrants at apartment and business complexes?
- approximately 70 psi
- dead end mains or loops 6” to 10”
What hydrants may not have a steamer and individual outlets may be gated?
Private fire hydrants at industrial facilities
NFPA Color Codes for the caps and bonnets:
- Red < 500 gpm
- Orange 500-1000 gpm
- Green 1000-1500 gpm
- Blue > 1500 gpm
Since 2016 private hydrants have been transitioning what color?
white
The presence of dead end mains or dead end loops within the complex of a private system may require what secondary methods to supply large volumes of water?
- tanker shuttle
- laying from a nearby city main or an adjoining
private system
What are purple hydrants for ?
-found on reclaimed water mains for irrigation only
hydrants are for maintenance flushing.
What size are the access holes on sound barrier walls ?
about 12 “
Static sources require a pumping apparatus to draft. What does drafting utilize that supplies a fire pump through hard suction hose?
atmospheric pressure
Pumps are equipped with a primer to reduce pressure inside the pump below atmospheric pressure, creating a ________ that allows static water to be drawn into the pump.
vacuum
if water from a natural static source enters the booster tank and pump, what must be done after use?
both must be throughly flushed.
What size is the TANK -TO- PUMP valve on each JFRD engine?
3 “
On all JFRD engines flow from the booster tank is limited to how many GPMs?
700 - 800 GPM
Booster tanks shall be refilled from where?
Only from city hydrants and always from the nearest supply point
A dry hydrant pipe is commonly __________. The threaded steamer connection is _________. An engine connecting to a dry hydrant will have to _________.
- PVC, but could be cast iron or stainless steel
- 4 1/2”
- draft through hard suction
JFRD engines are built by _________ and fitted with midship mounted Waterous __________ pumps. Either single stage or two stage and rated at ______ GPM capacity.
- Pierce
- centrifugal
- 1500, 1750, or 2000 GPM
What are the three primary sections of the modern fire pump?
- intake manifold
- discharge manifold
- centrifugal pump assembly
The pump transfer case does what?
transfers power from the diesel motor to the drivetrain in ROAD or from the diesel motor to the pump impellers in PUMP
Two impellers can be found on a _________, mounted on a ____________ and rotate at the __________.
- two stage
- common shaft
- same speed (RPM)
Intake pressure adds….
directly to the pressure produced by the pump
The impeller(s) will rotate continuously when the pump is engaged even when hose lines are shut down. This _______ prevents a continuous rise in discharge pressure but can _____________ within the pump.
- slippage
- generate excessive heat
What can cause a loss of prime and inhibit the ability of the pump to build pressure?
air
What must be done immediately after engaging the pump?
Circulate water, because running pump dry for more than a few minutes may cause excessive heat and pump damage.
The NEUTRAL position on the pump shift control is only used when?
in the event of a failure with the pump shift requiring use of the manual pump shift control.
What should you not do when shifting between ROAD and PUMP?
Do not stop in the neutral position.
Centrifugal pumps are tested by _____________ in accordance with NFPA 1911. The pump test measures _______ at three pressures while drafting. The volume at 150 psi is called _________.
- Underwriters Laboratories (UL)
- volume
- the rated capacity
It is important to understand that centrifugal pumps have the ability to _________________.
pump more than their rated capacity if supplied from a pressurized source.
In pressure, each impeller provides pressure in _______.
series
The VOLUME position is also called …
parallel or capacity
Changing between the two settings of PRESSURE and VOLUME is done by _________
the transfer valve
The transfer valve is electrically driven but also has a manual override in case of electric switch failure. Utilize a __________ to change settings if electric valve fails.
3/4” socket and socket wrench
What is the normal position of the transfer valve and why?
volume, it will produce maximum pump performance for majority of pumping scenarios.
What is the main difference in operation for a single stage pump versus a two stage pump?
motor speed
To pump high pressures the single stage pump requires ______.
higher RPM
Since all intake connections share a common manifold that directs water to the impellers there is one ________.
intake gauge
How many intakes do JFRD engines have and what are they?
- four or five intakes
- two 6” steamer intakes and two 2 1/2” auxiliary intakes
(pony) - some engines have an additional 5” intake on the front or
rear with an electrically controlled valve
A Piston Intake Valve (PIV) and a Ball Intake Valve (BIV) incorporate :
- water control valve
- a spring operated pressure relief valve
- a bleeder valve
- 5” storz adapter
The internal pressure relief valve and PIV/BIV are preset to ________. Periodic adjustments may be necessary which can be performed by the engineer.
150 psi
What size are the steamer intakes on JFRD engines that allow the pump to draw the rated capacity at draft through one steamer intake (____)or both steamer intakes (____)?
- 6 “
- ( 1500 gpm )
- ( 1750 and 2000 gpm )
What size are the front and rear intake pipes that because of the reduced diameter will flow less than the steamers
( __________ )
- 5 “
- ( 1000 gpm at draft, 1500 gpm from a hydrant )
What units have a red painted direct tank fill in their tailboard compartment?
E-7 and E-21
How long does it take the electric front and rear intake valve to fully open or fully close?
15 - 20 seconds
When charging a supply line on the electric front or rear intake valve, the hydrant pressure may hold it close. To prevent this what should you do?
partially open the valve before charging the supply line
Why is bleeding air from intake lines critical?
to avoid loss of prime
What gauge reads the discharge manifold pressure?
Master discharge gauge
Compound gauges have a pressure scale (PSI) and a vacuum scale (inches of mercury or inHg). The pressure scale reads from ____, and the vacuum scale reads _____.
- 0 to 600 psi
- 0 to -30 inches
Unlike the centrifugal fire pump, the primer is a _____________ which can pump air and water. When activated it creates a vacuum with the fire pump, removing air so water can enter the pump.
positive displacement pump
What are two alternative methods for bleeding air from the pump when the primer is inoperative?
- partially opening the deck gun valve will help purge air and prime the pump because it is the highest discharge on the pump
- small amounts of air can be purged by partially opening the TANK FILL valve.
- either of these methods may prime the pump faster than using the primer alone.
Although you can safely operate the primer at any pressure or RPM, for best performance set the RPM between ______.
1000 - 1200
What are the four motor functions to be monitored while pumping?
- coolant temperature
- oil pressure
- transmission temperature
- voltage
Coolant temperature is considered fully warmed up at ….
180 - 220 degrees
What is oil pressure at idle and at speed
15 psi @idle
35 - 45 psi @ speed
What should volts for voltage be?
13 to 14.5
what is considered normal transmission temperature?
under 300 degrees is normal
A low voltage indication will….
gradually reduce motor RPM
High coolant temperature or low oil pressure could…
result in motor damage
What should one always be aware of while pumping?
motor RPM
How can you monitor pump water temperature?
feeling the pump piping
This valve controls a small discharge line that directs pump water to the booster tank. Flows less than ______ and will remove hot pump water to be replaced with cooler water from the supply. Generally only needed when hose lines are ___________.
- Pump Cooler / Recirculator
- 25 GPM
- charged but not flowing
Thermal dump valve is temperature activated at ____.
140 degrees
Operates as a heat exchanger. To prevent overheating while pump is operating open this valve to discharge cool pump water through the radiator. This valve should be opened anytime the coolant temperature exceeds the normal level. Pump must be engaged for this valve to function.
Engine Cooler or Auxiliary Cooler
A pressure governor can make automatic adjustments to _____ pressure in order to compensate for variables in ______ pressure.
- discharge
- intake
Integrated into the motors fuel management system and controls pump discharge pressure (PDP) by changing motor RPM.
the governor
JFRD utilizes what three types of pressure governors?
- Class 1 (two stage engines before 2008)
- Pump Boss 100
- Pump Boss 200
Any changes to the discharge pressure will be compensated by the governor through and change in ____.
RPM
What effects discharge pressure once PDP is set?
- open and closing of nozzles
- change in intake pressure
PSI must be selected for what three fire ground operations?
- pumping handlines
- pumping ladder pipes or ground monitors
- supplying a sprinkler or standpipe system
What is that one additional PSI situation that may require a change to RPM?
High rise pumping operations that exceed 300 PSI, pressure sensor is disabled above 300 PSI.
RPM must be selected for what fire ground operations?
- drafting (once draft is established you may choose to change to PSI mode)
- relay pumping
- charging 5 “ hose
- PSI mode malfunction
What engine needs to operate in PSI mode when relay pumping?
only the attack engine, other engines relay supplying water operate more efficiently in RPM mode. This also applies to a tanker supplying an engine.
How do you prevent a sudden PDP drop when opening the LDH discharge valve, that may result in a pressure spike on other hose lines possibly to unsafe levels?
change to RPM mode before charging 5” hose when using other lines
If the governor will not increase PDP and you have ensured an adequate water supply, what should you suspect?
air in the pump.
a small amount of air can hinder proper governor operation.
When operating the Class 1 Governor, one press of the MODE button selects _________, a second press changes to _______. Only at this point can you operate the throttle buttons or presets.
- PSI MODE
- RPM MODE
Operating the Pump Boss Governor, once engaged Pump Boss Governor defaults to ____. Changing modes is accomplished by pressing and holding the mode button or PSI/RPM button for ______.
- PSI mode
- 3 seconds
Each pressure governor has a PRESET button and both RPM and PSI preset are programmed by ______. Engine PSI preset is ______. Tanker PSI preset is _____. The RPM preset for both engines and tankers is ______. Using preset button is optional.
- TSF
- 110 PSI
- 50 PSI
- 1100 RPM
On a Class 1 governor, the RPM preset is ________ if the pump is engaged.
disabled
The pressure governor can also serve as a high idle control in _______ with the pump disengaged.
RPM mode (simply select RPM MODE and press PRESET)
Operating two stage pumps routinely with transfer valve in ________ will result in more efficient operation of the pressure governor and is not harmful to the pump or motor. Discharge pressure at idle will be __________.
- VOLUME
30 - 40 PSI
If your water supply runs low the governor will attempt to maintain PDP by increasing RPM. If the pump cannot maintain ________, the governor will return the RPM to idle. This is a safeguard to prevent ______.
- at least 30 PSI
- cavitation
Flow from the booster tank is limited to _______ on all JFRD engines.
700 - 800 GPM
If you need to supply the deck gun from the booster tank, use the fog nozzle at ______ or a ________.
- 500 GPM
- 1 1/4” tip (400 GPM) or 1 3/8” tip (500 GPM)
The governor may sense a supply problem and return RPM to idle when…..
residual pressure gets low (below 10 PSI)
Attempts to pump low volume at high pressure, such as a booster line, may cause ________ in the pump which the governor may falsely interpret as a low water supply and return the ______.
- mild cavitation
- RPM to idle
6” Soft intake
25 ft
5”
1000 ft
2 1/2”
1000 ft
1 “ booster line
200 ft
10 ft Hard suction Hose
2 (two) sections
1 3/4” pre-connected attack lines
- 2 (two) 200 ft crossways
- all other per company captain
Wildland Hose
200 ft of 1” hose
Apartment pack
100 ft of 1 3/4”
Primary supply hose
5 “ fitted with Storz quarter-turn couplings loaded flat in hose bed
Hydrant Bag
A rope (hydrant loop) with a hydrant wrench and two 5” spanner wrenches
When connecting 5 “ hose to the intake valve
never place a right hand twist in the hose, it may uncouple upon charging
If hose clamp is used when laying out, the clamp must be placed ____________
at least 25’ back from the tailboard on the supply side
A supply line connected to a hydrant at incident scenes should be _______
5 “ or larger
When loosening the hose clamp, do not position yourself ________.
yourself on the the hinge side of the clamp
When laying 5 “ hose
- lay 5” to avoid the path of vehicles
- any crossing should be done at an angle and not straight on
- if must be crossed only vehicles with high ground clearance permitted to do so
Practical volume limit of 5” hose
1600 GPM
If a full bed of 5” hose is used to supply an attack engine, an additional ________.
engine should hook up to hydrant and relay pump the supply line
Multiple bed of 5” has lays may require several
in-line relay engines in addition to the engine at the hydrant
Pumping 5” hose requires two-stage pumps to be operated in
VOLUME
When pumping 5” hose, maintain a minimum of
10 PSI residual pressure and never exceed 200 PDP
A 6” Ball intake valve (BIV) will flow in excess of
2000 GPM
LDH discharge valve is a ____ to a ____.
4” female to a 5” Storz adapter.
Standard JFRD hydrant connection, normally installed on 5” hose in the hosebed
4 1/2” female to a 5” Storz adapter.
This adapter is used for connecting 5” to the 2 1/2” outlet on a hydrant
2 1/2 female to a 5” Storz adapter
Vacuum rated adapter to allow connection of hard suction or 6” soft intake hose to BIV. Painted red and equipped with vacuum rated gasket
5” Storz to 6” male adapter
2 1/2” hose is versatile and can be used for
- FDC: supply sprinkler or standpipe
- Master Stream: supply ground monitor/mini monitor
- Handline: high volume handline for large fires,
supply a gated wye - Supply: transfer water between apparatus on scene
Rapid deployment, up to 300 GPM
2 1/2” Pre connect handline
Every engine should carry at least two- one in the high rise bag and one on the front bumper discharge
2 1/2” x 1 1/2” Gated Wye
2 1/2” Siamese
- joining two 2 1/2” hose lines together to form one line -
- augmenting the FDC to increase sprinkler or standpipe flow
- can be used during a modified tanker shuttle run
2 1/2” Smooth Bore Nozzle operates at _____ PSI.
50
Maximum safe flow through a 2 1/2” handline
300 GPM
To compensate for friction loss in 2 1/2” handlines add
10 PSI per 100’ to PDP
Rotating the bumper fully clockwise on this device will shut off nozzle even if bale is open
Akron Turbojet 2 1/2” Fog Nozzle
There is a greater tendency for handlines to kink when using the 75 PSI nozzle. What is a quick remedy for this
- increase initial PDP when charging, then reduce to the recommended PDP.
If hose kinks become frequent the engineer can boost PDP by
10 - 25 PSI
The smooth bore on an Akron Saberjet Nozzle can be configured for what size tips?
- 7/8”
- 15/16”
Sustained high pressure combined with low pumping volume can contribute to ________.
high pump temperature and impeller damage
Hard suction hose have _____ to match the steamer connection.
6” threads
What adapter sizes permit the hard suction hose to be connected to a hydrant?
the 6” to 4 1/2” and 6” to 2 1/2”
Each tanker carries a low level strainer with ______ threads. Also attached to the strainer is a ____ double male adapter so that it may be directly connected to the ____ hard suction hose. Connecting to a 6” hard suction requires a _________ adapter.
- 4 1/2”
- 4 1/2”
- 4 1/2”
- 4 1/2” to 6”
How long is the 6 “soft intake hose how much does in flow?
the red 6” soft intake hose is 25 feet long and flows in excess of 2000 GPM when connected to a BIV
High Rise Pack hose
- three 65’ sections of JFRD “High Rise Spec” 2 1/2 “ hose loaded in shoulder packs
High Rise Pack Nozzle
2 1/2" lightweight nozzle equipped the following way - bail shut off - mini stream shaper - short stack tips ( size 1 1/8" and 1/2" Low Flow)
High Rise Bag
- 2 1/2” in-line pressure gauge
- 2 1/2” gate/ball valve
- 2 1/2” lightweight elbow
- 1 1/2” x 2 1/2” increaser
- 1 1/2” Fog Nozzle
- 2 spanner wrenches
- marking device
- 6 disposable glow sticks
- 14 to 18” pipe wrench
- flat blade screw driver
- Phillips head screw driver
- Allen wrenches
- 6 to 8” crescent wrench
Attic Nozzles
- two lengths of 1 1/2” aluminum pipe (6’ and 2’)
- 1 1/2” x 2 1/2” increaser
- a standard 2 1/2” playpipe
How much attic space do attic nozzles cover and how much do they flow?
cover 1000 sq. ft of attic space and flow approximately
125 GPM @ 100 PSI
A wetting agent that can break down the surface tension of water permitting greater penetration.
Class “A” Foam
Class “A” Foam is deducted at __________.
1/4 % to 1 %
What Class B foams are utilized by JFRD?
Ansulite Lo-Viscosity and Thunderstorm AR-AFFF
Alcohol resistant versions of aqueous film forming foam are equally effective on hydrocarbon fuels _________ as well as polar solvents _________. Educted at
- Hydrocarbon fuels: gasoline, kerosene, diesel fuel
- Polar Solvents: ethanol, ethanol blends, methanol, and
ketones - 3 %
All gasoline now contains ___ ethanol. AR-AFFF and the ________ are required to achieve proper aeration to extinguish fires.
- 10 %
- Akron foam tube
What apparatus carry 3% Mil-Spec AFFF in their Foam Tanks?
- Engines 7 and 21
- Stations 16 and 56
- Foam 37 and 371
Aviation is a _____________ fuel very similar to ________. Mil-Spec AFFF will be most effective on these fires and spills.
non polar hydrocarbon
kerosene
How much foam concentrate should an engine carry to covert the booster tank water into finished foam?
a minimum of 15-18 gallons of concentrate (3-4 pails)
3 gallons per 100 gallons of tank capacity.
How much foam concentrate should a tanker carry to covert the 2500 gallon tank water into finished foam?
a minimum of 75 gallons of concentrate (15 pails)
Verify normal readings on all cab-mounted gauges. Once started the motor must run until it reaches what temperature?
normal operating temperature
These can limit the available flow, so its important to know the location of these in your territory.
Dead end mains
Disengaging the pump, shutting off the motor and batteries, re-initate the starting sequence and re-engage the pump are steps to take when ….
you find the governor control box without power after engaging the pump
A flow of 1200 GPM has 10 PSI FL per 100’ section of hose. 1600 GPM is the practical volume limit.
5” hose
Ha the ability to carry several hundred feet of hose so the proper length can be deployed.
2 1/2” Static Load
What are you 2-1/2” standard hose adapters?
- 2-1/2” double male
* 2-1/2” double female
Has a break apart feature allowing 1-3/4” hose to be extended from the playpipe
Akron Turbojet 2-1/2” Fog Nozzle
Rotating the bumper fully clockwise will shut off nozzle even if the bale is open
Akron Turbojet 2-1/2” Fog Nozzle
Be sure to add 5 PSI PDP per floor when operating above ground level
1-3/4” Akron Turbojet Nozzle
Hazardous Materials Team carries it because it has greater reach.
Akron Turbojet 100 psi model nozzle
The fog stream setting on an Akron Saberjet Nozzle will flow….
135 GPM @ 100 PSI NP
Each booster hose is equipped with a 1” Akron Turbo Jet Nozzle with GPM settings of
13, 25, 40 and 60 @100 PSI
What can contribute to high pump temperature and impeller damage?
Sustained high pressure combined with low pumping volume
For drafting from a natural static source, each engine shall be equipped with
a barrel-style strainer and rope
