Engineer Manual Flashcards
(446 cards)
1
Q
What is the most basic function of the fire service?
A
The ability to carry water and provide fire streams
2
Q
Per the engineers manual, how many engines are there city-wide?

A
Over 55
3
Q
What must the engine always be prepared to do?
A
Respond, provide protection for the crew, and function properly and efficiently on scene
4
Q
What two things are crucial to maintaining apparatus readiness?
A
Scheduled inspections and preventative maintenance
5
Q
Discrepancies shall be recorded where? Located? Click first and then?
A
- Daily apparatus check off, located in JFRD portal
* First click Tactical Support tab and then Daily Apparatus Management
6
Q
Safety or Operational concerns shall be brought to the attention of whom?
A
Company officer with appropriate logbook entry
7
Q
Who do you contact for any maintenance related issues?
A
Tactical Support Facility (TSF)
8
Q
When any JFRD equipment is noted as being lost, found, stolen, or damaged in any way, who do you notify?
A
Company officer immediately
9
Q
Diesel exhaust is carcinogenic and no level is safe, according to whom?
A
NIOSH and NFPA
10
Q
What’s the first thing you should do in your daily engine inspection?
A
Conduct brief conference with off going engineer
11
Q
Ensure proper fluids to include - (5)
A
- Motor oil
- Transmission fluid
- Coolant
- Power steering fluid
- Diesel exhaust fluid (DEF)
12
Q
Who do you contact with any questions about proper fluids?
A
TSF
13
Q
Proper air brake pressure both front and rear? What else must you check?
A
- > 100 psi
* proper operation of brakes
14
Q
Tired and wheels - (4)
Min. tread depth?
A
- tire pressure
- lug nuts
- axle seals
- tread depth
4/32” or when tread wear indicators are even with the tire tread
15
Q
Once started the motor, how long must it run?
A
Until it reaches normal operating temperature. Verify normal readings on all cab mounted gauges
16
Q
With TANK-TO-PUMP engaged : (7)
A
- verify pressure on master discharge gauge
- operate primer until water is discharged
- ensure proper operation of the governor in both PSI and RPM modes
- ensure proper operation of the transfer valve (if equipped)
- operate electric intake valves fully-open and fully-closed
- discharge water from at least one discharge opening
- open and close each 5” intake valve then remove the cap to drain
17
Q
What do you open to briefly flush sediment from the lowest level of the pump?
A
PUMP DRAIN
18
Q
Tilt cab and inspect what?
Check for what?
What should you do prior to tilting cab?
A
- inspect all drive belts for tightness and wear
- check batteries for leaks and tight connections
- secure loose cab equipment prior to tilting
19
Q
View underside of the engine for?
A
Pump or tank leaks
Check motor, transmission, pump transfer case, and drivetrain for fluid leaks
20
Q
Before climbing under apparatus, what should you ensure first?
A
Air brakes are set
21
Q
When inspecting exterior, what should you note?
A
Any new body damage
22
Q
Defibrillator check off?
A
Change batteries and ensure proper operation. Ensure all equipment is in place for immediate use
23
Q
Portable oxygen check off?
A
Tank pressure >1000psi and oxygen delivery adjuncts are properly stocked
24
Q
Air chisel check off?
A
Connect to air bottle and ensure proper operation ( >4000psi)
25
What do you use for chainsaw bar lubricant?
Motor oil
26
Hydraulic pump and tools check off?
Check gas, oil, hydraulic fluid levels. Ensure proper operation of motor and pump.
27
Store hydraulic spreaders how far apart?
1/2” between tips
28
Generator check off?
| How long until warmed up?
Check oil and coolant.
| Run generator until fully warmed up (approx. 5mins)
29
Why do you shut off fuel supply to portable gas motors and run until motor stalls?
Clears fuel lines and prevents damage from gasoline additives
30
What should you add to newly acquired fuel?
Fuel stabilizers
31
Who established a maintenance schedule?
Company Captain
32
How often should you wax apparatus?
Monthly or in accordance with the company maintenance schedule
33
What should you use to lubricate roll up doors? Door hinges?
* silicone spray
| * light oil
34
How many air tanks under the engine?
| Bleed for how long?
* four
| * bleed until discharging air is free of moisture
35
Inspect internal casing for what? If intake valve swivel does not move freely?
* rust or sediment buildup and proper operation of the valve
| * apply soapy water and work until loose
36
After back flushing pump, ensure pump is primed :
Place engine in pump gear, open the TANK-TO-PUMP valve, and operate primer
37
How to clean hand tools?
Use soap and water to clean, dry thoroughly. Apply light oil to steel surfaces and moving parts. Apply linseed oil to wood handles
38
How to clean ladders?
Clean with soapy water and all moving parts manipulated. Inspect heat indicators for discoloration and inspect entire ladder for physical damage. Use light oil sparingly to lubricate roof hooks.
39
How to clean nozzles?
Soapy water and a soft brush. Immerse nozzle in warm soapy water and operate all moving parts.
40
How to clean couplings?
If swivels frozen or stiff, apply warm soapy water and rotate swivel
41
How to clean chainsaw?
Inspect air filter, remove and clean if indicated. Remove chain assembly and clean chain drive. Use air pressure to remove debris from hard to reach areas
42
How to clean air tools?
Soapy water and dry thoroughly. Lubricate each blade with light oil.
43
How many drops of air tool oil into blade end?
5 drops
44
What should you check on SCBA bottles?
Hydrostatic dates
45
What should you check portable extinguishers for?
Proper charge and annual inspection date
46
How is rope inspected?
In accordance with SOG 419
47
How to clean high-lift jack?
Soapy water and dry thoroughly. Wipe down tool with light oil, including moving parts. Inspect jack for bent or damaged components
48
How to clean chains?
Soapy water if dirty, and dry thoroughly. Wipe down length of chain sparingly with light oil. Inspect links for damage or corrosion.
49
How to clean come-along?
Clean with DRY cloth. Use light oil sparingly on moving parts. Inspect cable for broken strands, corrosion, or wear. NO lubricants on wire rope. If wire rope gets wet or is exposed to moisture it must be dry thoroughly. Inspect handle for straightness.
50
How must all lubricants be used?
Sparingly
51
Light oil :
Liquid wrench, WD-40, or similar water displacing lubricating oil, typically in an aerosol can
52
Air tool oil :
supplied with air chisel in a small squeeze bottle
53
Two-cycle oil :
Added to gasoline to lubricate two-cycle engines
54
Silicone spray :
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
55
Graphite :
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.
56
Grease :
Only grease permitted is “food grade” machinery grease. Apply to appliance and pump threads as needed
57
Fuel stabilizer :
Add to newly acquired gasoline according to label
58
DEF :
Diesel exhaust fluid used in some engines to reduce nitrogen oxide emissions
59
A complete daily inspection shall be performed immediately when service occurs that requires engine to be OOS for how long?
24hrs or any period that spans two shifts
60
If service was performed and the engine returned on the same shift, the following checks must be completed prior to returning to service : (4)
* visual verification that the booster tank is full
* verify pump and governor operates properly (in both modes)
* verify proper brake pressure and brake operation
* ensure all equipment is accounted for
61
When spotting the engine, give priority to _____? (EMS response)
Location of the rescue unit and stretcher access. Consider safety of pt when loading.
62
On busy streets, what should you use to protect pt loading area?
The engine
63
What is the primary consideration for engine placement?
Safety of the patient and responders
64
Use the engine as a barricade to block or divert traffic, which will accomplish what?
Allow room to safely manipulate the patient and/or stretcher or to advance hose lines
65
What should you consider when treating pts?
Engine noise and location of exhaust pipe
66
What may require spotting uphill/upwind?
Spills or leaks
67
Use what as needed for scene safety?
Police
68
If extrication is needed, what should you consider?
Placement needs of the ladder truck or extrication engine
69
If apparatus is facing oncoming traffic at night, what should you do?
Turn off headlights to improve night vision of approaching vehicles
70
The first arriving engine and ladder company should be spotted where, in most cases?
In front of the structure
71
Where should the first arriving engine and ladder be spotted?
How should you position the engine?
* In front of the structure in most cases
| * For placement of attack lines while leaving room in front of the structure for the ladder company
72
On multi-story structures, what is engine placement? Why?
Same as for single story structures, but the engine should be placed to leave the building corners open. Permits ladder co. To place the turntable in a spot to reach two sides of the structure
73
Where should you NOT park?
* do not park under power lines
| * do not park too close to involved structures
74
Hose line considerations?
* leave room to deploy hose lines
| * keep hose away from the exhaust pipe
75
Newer engines need how much space on officers side to lower ladder rack?
5 feet
76
Who should you contact prior to attempting removal of any engine that has become stuck?
TSF
77
When can you drive on private driveways or private bridges?
During emergency response
78
When backing, where should the spotter be? Why?
On engineer’s side, 5-10 feet from the tailboard. This places the spotter in the most visible location for the engineer and allows the spotter full view of the rear of the engine.
79
What must the engineer and the spotter maintain?
Eye contact
80
Our primary water supply comes from where?
Fire hydrants; part of a city wide distribution network that also consists of wells, treatment plants, pumping stations, and water mains operated and maintained primarily by JEA
81
Main sizes range from ____ in diameter and average what psi static pressure?
* 6” to 24”
| * 70psi
82
What communities operate their own water utilities?
Atlantic Beach, Neptune Beach, and Baldwin
83
In some cases, hydrant pressure is provided by what?
Head pressure from water towers
84
An alternative to the water main system is what?
Static source
85
All city fire hydrants are equipped with what size inlet, supplied by what?
6” inlet supplies by the water main system
86
The flow (GPM) will vary based on what? (Hydrants)
Diameter of the water main and water main pressure
87
What can interfere with hydrant flow? (4)
* dead end mains
* partially closed street valves
* sediment buildup
* damaged mains
88
City fire hydrants, supply main sizes
Residential -
Commercial -
* 6” to 10”
| * 8” to 24”
89
Places that may utilize a private water supply? (5)
* commercial plants
* schools
* shopping centers
* aircraft hangars
* apartment complexes
90
What might be located at high risk facilities (chemical or petroleum)?
High pressure systems
91
Private fire hydrants (industrial facilities)
| Static pressure?
Up to 175psi
92
Private fire hydrants (apartments and business complexes)
| Supply mains size?
Dead end mains or loops
| 6” to 10”
93
Private hydrants are transitioning to what color? As of when?
White as of 2016
94
NFPA color codes
Blue -
Green -
Orange -
Red -
* 1500 GPM or more
* 1000-1499 GPM
* 500-999 GPM
* Below 500 GPM
95
Where may purple hydrants be found?
| Why are they installed?
* on reclaimed water mains
| * maintenance flushing
96
What size are access holes on access holes?
About 12”
97
What does drafting utilize to supply a fire pump through hard suction hose?
Atmospheric pressure
98
What are fire department pumps equipped with to reduce pressure inside the pump below atmospheric pressure?
Primer
99
What determines the flow from the booster tank?
Size of the TANK-TO-PUMP valve and head pressure
100
Flow from booster tank is limited to what?
700-800 GPM
101
Booster tank should be refilled from where?
ONLY from city hydrants and ALWAYS from the nearest source
102
Size of dry hydrant connection?
4 1/2” steamer
103
Considerations before using dry hydrant?
* is hydrant properly maintained by the property owner? (Damaged)
* can the engine gain access to hydrant?
* is there sufficient water available?
104
Who are JFRD engines built by? What are they fitted with?
Built by Pierce and fitted with midship mounted Waterous centrifugal pumps
105
What are engine pumps rated at?
1500, 1750, or 2000 GPM
106
How many different sections does the modern fire pump have? What are they?
Three
* intake manifold (lower half of pump body - green arrows)
* discharge manifold (upper half of pump body - red arrows)
* centrifugal pump assembly (including impeller(s) - yellow arrows)
107
Where is pump transfer case mounted? What does it do?
* Below the pump (blue arrows)
* it transfers power from the diesel motor to the drivetrain (in ROAD position) or to the pump impellers (in PUMP position)
108
What are JFRD engines powered by?
Six-cylinder turbo-charged diesel motors, manufactured by Caterpillar (C12 or C13) or Cummins (ISL series)
109
What type of design does the impeller have?
A “flow-through” design
110
What does intake pressure do?
Adds directly to the pressure produced by the pump
111
What does “slippage” do?
Prevents a continuous rise in discharge pressure but can generate excessive heat within the pump
112
Why can’t centrifugal pumps, pump air?
Due to their open design
113
Running the pump dry may cause what?
Excessive heat and pump damage
114
What does centrifugal force theory state?
A spinning object will exert force from the center towards the outer edge
115
Where does the impeller discharge water? What does that chamber do?
Volute, this chamber directs the pressurized water into the discharge manifold
116
As motor speed (RPM) increases, what happens to the impellers?
The velocity of the impellers increases
117
The pump shift controls what type of gear, where?
Ring gear, within transfer case
118
When is the neutral position used?
Only in the event of a failure with the pump shift requiring use of the manual pump shift control
119
Who tests centrifugal pumps?
Underwriters Laboratories (UL) in accordance with NFPA 1911
120
What does the pump test measure?
Volume at three pressures while drafting
121
What is the volume at 150psi called?
Rated capacity
122
A 1500 GPM engine must pump :
* 100% of rated capacity at ___
* 70% of rated capacity at ___
* 50% of rated capacity at ___
* 150psi (1500 GPM)
* 200psi (1050 GPM)
* 250psi (750 GPM)
123
What may the data plate also include?
Test RPM and governed speed
124
In pressure setting, each impeller provides pressure on ___
Series
125
In pressure setting, how much of the total pressure is produced by each impeller?
50%
126
The volume position is also called ____
Parallel or capacity
127
What is the advantage of the two-stage design?
Ability to operate in either setting : pressure (series) for max pressure or volume (parallel) for max volume
128
Attempting to pump high pressure in volume will require what?
Excessive RPM
129
When pumping beyond 50% of a pumps rated capacity, you must be in what setting?
Volume
130
How is changing between the two settings accomplished?
Transfer valve
131
What is normal position of transfer valve? Why?
Volume; it will produce max pump performance for the majority of pumping scenarios
132
What is main difference in operation from a single-stage pump to a two-stage pump?
Motor speed
133
A single stage pump will operate much like what?
A two-stage pump in volume
134
How many intakes do JFRD engines have?
| What are they?
* Four or five
* two 6” steamer intakes and two 2 1/2” auxiliary intakes (often called “pony” intakes) Some engines have an additional 5” intake on front or rear w/electronically controlled valve
135
Both types of intake valves incorporate what 4 things?
* water control valve
* spring-operated pressure relief valve
* bleeder valve to bleed air from supply hose
* 5” Storz adapter
136
How is the pump protected from excess intake pressure?
Intake pressure relief valve built into the pump and PIV/BIV also include pressure relief valve for redundant pump protection
137
What psi are both the internal pressure relief valve and PIV/BIV preset at?
150psi
138
What is the diameter of the intake pipe determined by?
Rated capacity of the pump
139
What size are the front and rear intake pipes? What will they flow at draft and from hydrant?
* 5”
| * 1000 GPM at draft, 1500 GPM from hydrant
140
E7 and E21 have one additional intake inside tailboard compartment. What type of intake is it? What color is it painted?
Direct tank fill; red
141
E7 and E21 are equipped with what? Where is the foam solution metered?
Foam proportioners; water for the foam solution is metered through the red intake into the booster tank for more accurate finished foam
142
Most intake and discharge valve are ___?
Quarter-turn ball valves
143
The electric front and rear intake valve take how long to fully open or fully close?
15-20 secs
144
What should you do before charging supply line connected to front or rear intake valve?
Partially open valve; valve may be held closed by hydrant pressure otherwise
145
Most commonly used valves?
TANK TO PUMP and TANK FILL
146
When the water supply is from a source other than booster tank, what must be closed?
TANK TO PUMP
147
What is critical to avoiding loss of prime?
Bleeding air from intake lines
148
JFRD engines discharge options range from what?
1” booster line to a 4” LDH discharge
149
Each gauge is of what type?
Compound type
150
Master discharge gauges read from what psi? Vacuum scale?
* 0-600 psi
| * 0 to -30 inches
151
Master Gauges - intake on which side? Discharge?
* intake on left
| * discharge on right
152
Why is a primer required?
Due to centrifugal pump inability to move air
153
What is the electric primer?
A rotary vane pump driven by a small electric motor and activated by a pull handle on the pump panel
154
Unlike the centrifugal pump, the primer is what type of pump?
Positive displacement pump which can pump air and water
155
When the primer is activated, what happens?
It creates a vacuum within the fire pump, removing air so water can enter the pump
156
If primer is inoperative, what are the two alternative methods for bleeding air from the pump? How effective are these methods?
* partially open deck gun valve, it will help purge air and prime the pump
* partially open TANK FILL valve, small amounts of air can be purged
* either of these methods may prime the pump faster than using the primer alone
157
Where do both types of priming pumps draw current from? What RPM provides best performance?
* vehicle charging system
| * best performance between 1000-1200rpm
158
How many motor functions to be monitored while pumping? What are they? Perimeters?
* four
* oil pressure : 15psi at idle; 35-45psi at speed
* coolant temp : 180-220 degrees fully warmed up
* voltage : 13 to 14.5 bolts
* transmission temp : under 300 degrees is normal
159
Where are gauges located?
Pump panel and are redundant of cab gauges
160
What will low voltage indication result in?
Gradually reduce motor RPM
161
What could high coolant temp or low oil pressure result in?
Motor damage
162
What is another thing you should always be aware of while pumping?
Motor RPM
163
How many GPM does pump cooler/recirculating line flow? Generally, when is this valve needed?
* Less than 25 GPM
| * when hoselines are charged but not flowing
164
The engine cooler or auxiliary cooler valve operates as what?
Heat exchanger
165
What must be engaged for the engine cooler valve to function?
Pump must be engaged
166
To operate the pump efficiently and safely, what does the engineer need?
A device for setting pressure (throttle) and controlling discharge pressure (pressure relief)
167
Each JFRD engine utilizes an electronic pressure governor which combines what two things into one device?
Throttle and pressure relief
168
A pressure governor can make automatic adjustments to ___ pressure to compensate for variables in ___ pressure.
* Discharge
| * Intake
169
The governor is integrated into what system? What does it control and how?
The governor is integrated into the motors fuel management system and controls pump discharge pressure (PDP) by changing motor RPM
170
The pressure governor consists of only two major parts -
The control box (located on pump panel) and pressure sensor (installed within the discharge manifold)
171
What does the pressure sensor monitor? What does it transmit and where?
* PDP
| * PDP signals to the control box
172
Where and what does the control box transmit signals to?
Transmits signals to the motors fuel management system to increase or decrease RPM as required to maintain the PDP as set by the engineer
173
When the pump is engaged, what is disabled?
The cab throttle controls (accelerator pedal and high idle switch)
174
Any changes to the discharge pressure will be compensated by the governor through what?
A change in rpm
175
What is the most common disruption to PDP?
The opening and closing of nozzles
176
Any change to intake pressure will also be felt where?
Discharge side of the pump
177
The engineer must select PSI mode for the following fireground operations : (3)
* pumping hand lines
* pumping ladder pipes or ground monitors
* supplying a sprinkler or standpipe system
178
Selecting RPM MODE disables what?
The pressure sensor
179
Engineers must select RPM mode for the following fireground operations : (5)
* drafting
* relay pumping
* charging 5” hose
* PSI mode malfunction
* pump operations that excess 300 PSI
180
When relay pumping, only which engine needs to operate in PSI mode?
Attack engine
181
If there is a PSI mode malfunction what is most likely to cause?
Most likely a failure of the pressure sensor or a loss of electronic signals between the pressure sensor and control box
182
Other than rapid pressure increases of what PSI, there is no pressure protection in RPM mode?
In excess of 30 PSI
183
With each governor type the following steps must be accomplished in the order listed to ensure proper operation : (4)
1. Engage the pump
2. Open the TANK TO PUMP valve
3. Open the appropriate discharge valve
4. Operate the governor
184
What must the pressure sensor detect to operate?
PDP in the pump
185
If the governor will not increase PDP and you have insured an adequate water supply what should you suspect?
Air in the pump
186
What will the digital readout display when the pressure sensor cannot detect PDP?
LO PRESSURE or LO SUPPLY
187
Changing modes is accomplished by pressing and holding what button for how long?
Mode button or PSI/RPM button for 3 seconds
188
Who programs PRESET button? What are presets for engine/tanker PSI and RPM?
• TSF
* engine - 110psi
* tanker - 50psi
• engine/tanker - 1100RPM
189
The pressure governor can also serve as what?
A high idle control in RPM MODE with the pump disengaged
190
In volume mode, The discharge pressure at idle will be what psi?
30-40 psi
191
If your water supply runs low what will the governor do? If the pump cannot maintain at least what psi the governor will return the RPM to idle? What does the safeguard prevent?
* increase RPM
* at least 30 PSI
* prevent cavitation
192
If you attempt to exceed 700-800 GPM what will happen?
The digital readout may indicate LO SUPPLY or LO PRESSURE And the governor will return rpm to idle
193
If you need to supply the deck gun from the booster tank, what should you use?
Fog nozzle at 500 GPM or
| 1 1/4” or 1 3/8” tip
194
When residual pressure gets low, (what psi) what may happen?
Below 10 psi; the governor may sense a supply problem and return RPM to idle
195
Attempts to pump low volume at high pressure (such as booster line) may cause what?
Mild cavitation in the pump which the governor may falsely interpret as a low water supply and return the RPM to idle
196
If you find the governor control box without power after engaging the pump, what may you have to do?
You may have to disengage the pump, shut off the motor and batteries, re-initiate the starting sequence and re-engage the pump
197
When connecting 5” hose to the intake valve, what should you never do?
Never place a right hand twist in the hose. It may uncouple upon charging
198
If a hose clamp is used when laying out, where must the clamp be placed? How far back should you clamp?
Close to a coupling on the supply side. Always clamp at least 25’ back from tailboard
199
When shall crossing 5” hose be done?
Only in an emergency
200
A flow of 1200 GPM has what friction loss per 100’ section of hose? What is the practical limit of 5” hose?
* 10 psi
| * 1600 GPM
201
Pumping 5” hose requires two-stage pumps to be operated in ____?
Volume
202
When relay pumping, maintain a minimum of ? And never exceed ?
* min. 10 psi
| * never exceed 200 psi PDP
203
The 6” ball intake valve (BIV) will flow ?
In excess of 2000 GPM
204
2 1/2” hose used for : (4)
* FDC - to supply sprinkler or standpipe
* Master Stream - to supply ground monitor and mini-monitor
* Handline - high volume handline for large fires. May also be used to supply a gated wye
* Supply - to transfer water between apparatus on scene
205
2 1/2” pre-connected handline
Advantage :
Disadvantage :
* rapid deployment, up to 300 GPM
| * relatively short lengths (200’ or less) may be limiting factor for large area structures
206
2 1/2” static load
Advantage :
Disadvantage:
* ability to carry several hundred feet of hose so the proper length can be deployed
* the engineer must break the coupling and connect to the desired discharge outlet
207
2 1/2” Siamese uses : (3)
* for joining two 2 1/2” hose lines together to form one hose line
* augmenting the FDC to increase sprinkler or standpipe flow
* can be used during “modified tanker shuttle”
208
Max. safe flow through a 2 1/2” handline?
300 GPM
209
To compensate for friction loss in 2 1/2” handlines add what psi per 100’ for the PDP?
10 psi per 100’
210
Akron Turbojet 2 1/2” Fog Nozzle
| Operates at what psi NP? Adjustable flow range of ?
* 100 psi
| * 125, 150, 200, and 250 GPM
211
Which nozzle has a “break apart” feature that allows a 1 3/4” hose to be extended from play pipe?
Akron Turbojet 2 1/2” fog nozzle
212
Rotating the bumper fully clockwise on the Akron Turbojet 2 1/2” fog nozzle will do what?
Shut off nozzle even if bale is open
213
Akron Turbojet Nozzle (1 3/4”) has how many settings ranging from ? What does JFRD recommend for GPM setting for initial interior firefighting?
* Five settings ; 30-200 GPM
| * 95, 125, or 150 GPM
214
Always check what at beginning of your shift and prior to use?
GPM setting
215
```
Akron Turbojet (75 PSI) fog nozzle :
An initial PDP of what PSI will allow the nozzle operator to select 95, 125, or 150 GPM on the nozzle and attain this flow?
```
110 PSI
216
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Akron Turbojet (75 PSI) fog nozzle :
A desired flow of 200 GPM requires an increase in PDP from 110 PSI to ____. What may be required for safe handling?
```
150 PSI; two firefighters
217
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Akron Turbojet (100 PSI) fog nozzle :
A pump discharge pressure of ___ PSI will allow the nozzle operator to select 95, 125, or 150 GPM on the nozzle and attain this flow.
```
135 PSI
218
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Akron Turbojet (100 PSI) fog nozzle :
A desired flow of 200 GPM requires an increase in PDP from 135 PSI to ___ . What may be required for safe handling?
```
175 PSI; two firefighters
219
What is a quick remedy for when 75 PSI nozzle handlines kink?
Increase initial PDP when charging, then reduced to the recommended PDP
220
If the nozzle operator experiences a sudden PSI loss while advancing what should they suspect?
A kinked line
221
If hose kinks become frequent the engineer can boost PDP by ?
10-25 PSI
222
Akron Saberjet Nozzle :
The fog ranges from what? What can it not produce?
The smooth bore can be configured for ?
* narrow angle to a wide angle and cannot produce a straight stream
* 7/8” or 15/16” tip
223
Akron Saberjet Nozzle :
Fog stream setting will flow
____ GPM at 100 PSI NP
135 GPM
224
Akron Saberjet Nozzle :
| A PDP of ___ PSI will produce above flows with 150’ or 200’ hose
125 PSI
225
Akron Saberjet Nozzle :
| When solid stream is selected this nozzle may require what for safe control?
Two firefighters
226
Akron Saberjet Nozzle :
| Friction loss increases ___ PSI when changing from fog to solid stream.
40-50 PSI
227
Akron Turbojet Booster Hose GPM settings :
13, 25, 40, and 60 GPM at 100 PSI
228
Sustained high pressure combine with low pumping volume can contribute to what?
High pump temperature and impeller damage
229
Who carries the newer type of strainer? What characteristics does it have?
Engines equipped with front intakes;
| Red in color and has 6” threads
230
Soft intake hose will flow ? (6”)
In excess of 2000 GPM when connected to a ball intake valve (BIV)
231
High rise packs :
| High rise nozzle ?
One - 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)
232
High Rise Bag : (13)
* 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 flow sticks
* 14-18” pipe wrench
* flat blade screwdriver
* Philips head screwdriver
* Allen wrenches
* 6-8” crescent wrench
233
Attic nozzle/distributor nozzle :
Lengths? Size of lengths? Accessories?
These nozzles cover how many sq. ft.?
GPM and PSI?
* two lengths of 1 1/2” aluminum pipe (6’ and 2’), a 1 1/2” x 2 1/2” increaser and a standard 2 1/2” play pipe
* 1000 sq. ft. of attic space
* Approx. 125 GPM at 100 PSI
234
What is the attic nozzle ideal for?
Fires caused by lightning strikes
235
```
What is class a foam?
What is it educated at? 
```
* Class a foam is actually a wetting agent and can break down the surface tension of water permitting greater penetration of water into class a fuels.
* 1/4% to 1%
236
What does AR-AFFF stand for?
Alcohol resistant aqueous film forming foam
237
Two types of Class B foam JFRD carries?
Ansulite Lo-Viscosity AR-AFFF and
| Thunderstorm AR-AFFF
238
What are AR-AFFF foams effective on?
| At what percentage are they educated?
• Hydrocarbon fuels (gasoline, kerosene, diesel fuel)
• polar solvents (ethanol and ethanol blends, methanol, and ketones)
• 3%
239
All gasoline now contains at least what percentage of ethanol?
10%
240
What apparatus carry 3% Mil-Spec AFFF in their foam tanks?
* Engines 7 and 21
* Stations 16 and 56
* Foam 37 and 371
241
Aviation fuel is what type of fuel?
What is it similar to?
What would be most effective on these fires/spills?
* non-polar hydrocarbon
* similar to kerosene
* Mil-Spec AFFF
242
Although Foam 37 and 371 tankers respond citywide, what is their main purpose? How much foam does each tanker carry?
* Their main purpose is to protect the Navy Fuel Depot which primarily stores aviation fuel
* 1800 gallons of foam concentrate
243
How much foam concentrate shall each engine carry? (Class B)
15-18 gallons of concentrate or three-four pails (3 gallons per 100 gallons of tank capacity)
244
Each tanker shall carry how much foam concentrate?
Enough foam concentrate to convert 2500 gallons into finished foam. Min. of 75 gallons of concentrate or 15 pails (3 gallons per 100 gallons of tank capacity)
245
A foam eductor rated at ___ GPM. This device is adjustable from ___% to ___%. It is used with the standard ___” handline
* 125 GPM
* 1/4% to 6%
* 1-3/4”
246
Akron foam tube attaches to what nozzle only?
1-3/4” Akron Turbojet nozzle only
247
Max. distance between eductor and nozzle ? If more distance is required, what should you do?
- 75 PSI nozzle :
- 100 PSI nozzle :
* 75 PSI nozzle max. distance 250’
* 100 PSI nozzle max. distance 150’
* use 2-1/2” hose and gated wye
248
The foam eductor requires an inlet pressure of ___ PSI.
200 PSI
249
Who carries several large caliber master stream appliances for foam and dry chemicals?
HazMat Teams and St. 37
250
Who carries the Akron 250 GPM eductor and foam tube? What size hose is it used with? Distance allowed between eductor and nozzle? Inlet pressure?
* Engines 7, 21, and 31
* 2-1/2” hose and 2-1/2” Akron Turbojet nozzle
* 300’ between the eductor and nozzle
* 200 PSI inlet pressure
251
JFRD maintains emergency stockpiles of foam where? What is the total of JFRD foam capacity?
* TSF and Station 37
| * Approx. 20,000 gallons
252
Shelf life for Class A foam?
| What shape pail?
Indefinite; square pails
253
Which foam is considered a hazardous material to the environment?
Class B
254
AR-AFFF specifications : (3)
* compatible with dry chemicals
* cannot be used for subsurface injection
* can be used with fresh or salt water
255
Engine ground ladder compliment
* 24ft extension ladder
* 14ft roof ladder
* 10ft attic ladder
* some engines carry Little Giant
256
24ft extension ladder : (3)
* first story access
* second story window access
* second story balcony access
257
14ft roof ladder : (3)
* first story roof access
* interior access (tall ceilings)
* roof work with hooks deployed
258
10ft attic ladder : (3)
* interior scuttle access
* interior attic access
* some first story windows
259
Engine extrication equipment : (8)
* high lift jack w/lifting hook
* air chisel and 3 blades (long flat, short flat, panel)
* come-a-long
* chains in lengths 6ft, 12ft, and 15ft
* j-hook w/shackle
* step chocks (min. of three)
* ladder cribbing (min. of one)
* assortment of 4x4 cribbing
260
Extinguishers carried by engines :
```
• foam
• carbon dioxide (CO2)
• purple k (PKP)
• some companies carry MET-L-X or
LITH-X
```
261
Foam extinguisher :
* 2-1/2 gallon ARC foam
* range : 15ft
* rating : 3A:20B
262
Carbon Dioxide (CO2) :
* 20lb CO2
* range : 8ft
* rating : 10B:C
263
Purple K (PKP) 18lb :
* 18 pound
* 18ft in 18 secs
* 80B:C
264
Purple K (PKP) 30lb :
* 30lb
* 18ft in 8 secs
* rating : 20B:C
265
How can the 30 pound Purple K extinguishers be identified?
Red handle
266
Which companies carry MET-L-X and/or LITH-X?
Companies that possess Class D hazards in their district
267
What are sodium bicarbonate extinguishers effective on?
Class B and C fires
268
What powers the 10 kilowatt (KW) generator? Where does it receive fuel from? Where is start switch? What does it power?
* Twin-cylinder diesel motor
* receives fuel from the main fuel tank
* electric start switch on the pump panel and dashboard
* powers five scene lights (front, sides, and rear) and a 30 amp cord reel on the rear for fans and lighting
269
What is the winch powered by? How far does the wire rope extend and what is it’s pulling capacity?
* 12 VDC receptacles located at multiple points on the engine
* 100ft; 9000lb pulling capacity
270
What can be used to estimate the available water supply?
Static pressure and residual pressure
271
After stopping the valve at the desired pressure, what should you do?
Turn the discharge handle 45 degrees to lock in position
272
Ladder pipe nozzle PSI?
Automatic fog nozzle rated up to?
Waterway is limited to?
Smooth bore tips range up to?
* 80 PSI
* 2000 GPM
* 1000 GPM
* 2”
273
When supplying a ladder pipe within 100’ the recommended initial PDP is ___ PSI (any nozzle)
150 PSI
274
Mid-ship turntables have ___ intakes, while rear-mount turntables have ___ intakes.
* side
| * single rear intakes
275
Master stream fog nozzle PSI?
| Flow is adjustable in increments of ?
* 100 PSI
| * 500, 750, 1000, and 1250 GPM
276
Add what PSI for friction loss in master stream appliance in addition to NP?
10-25 PSI
| For higher GPM expect friction loss to be closer to 25 PSI
277
Add ___ PSI FL for each 100’ of 2 1/2” Siamesed hose for friction loss
25 PSI
278
Mini-monitor flows up to what GPM at what PSI? A hose lay in excess of ____ will require the what?
* 500 GPM at 100 PSI
* 200’
* Siamese and dual 2 1/2 hose lines
279
Be sure to bleed incoming air from supply hose for what reasons?
To prevent loss of prime or governor malfunction
280
What are the four options the engineer has when connecting to the hydrant?
* single 5” hose
* 6” hard suction hook-up
* full hydrant hook-up
* single 6” soft sleeve hose
281
What hose provides the most volume from a hydrant?
Hard suction
282
Where should you spot the engine when performing hard suction hook up?
Spot the engine with the front bumper even with the hydrant
283
If the hydrant is already in use and you want to shut down hydrant and swap the hard suction, how long should it take?
Preferably less than one minute
284
Prior to shutting down the hydrant, who should you establish communication with?
The engineer on scene
285
When is 6” hose preferred?
Maximum volume is needed, but hard suction hose is impractical
286
Hard suction and 6” soft sleeve hose connected to a high flow hydrant will permit flows _____
Up to 2000 GPM
287
How much more water will you get with full hydrant connection?
In most cases this will provide a 25% increase in water supply
288
What are the two limitations for source and relay engines?
200 PSI maximum PDP and 10 PSI minimum residual pressure
289
What is practical limit of 5” hose?
1600 GPM (four times the capacity of 2 1/2” hose)
290
Two stage pumps must be operated in what mode when relay pumping?
Volume
291
What is the standard method to supply another engine on scene?
By discharging water
292
Try to place the engine within ___’ of the FDC.
100’
293
What is PDP for supplying sprinklers?
150 PSI
294
When supplying sprinklers, what does a drop in pressure indicate?
An increase in flow - a sign that more sprinkler heads have opened
295
Initial PDP for supplying standpipes?
Initial 100 PSI
296
What is required when supplying standpipes?
A remote pump operator (RPO) utilizing gate/ball valve and PSI gauge on standpipe outlet
297
If FDC has frozen swivel, what should you do?
Install a 2 1/2” double male and then a double female
298
If the FDC is blocked or inoperable, what should you do?
Use a 2 1/2” double female and a Siamese to pump into the first floor standpipe outlet. Be sure to open the standpipe valve.
299
What will not allow you to pump into a first floor standpipe outlet?
Pressure reducing standpipe outlet valves
300
If additional flow is needed to FDC, what should you do?
Place one or two Siamese adapters into the FDC
301
Older buildings may have a pressure limitation on their standpipe system of ___PSI.
200 PSI
302
What are the three options you can use when operating from a private high pressure system to make the pressure more manageable and increase safety for the nozzle crews?
* use discharge valve to gate down discharge pressure. (Never gate down intake lines)
* connect to private hydrant and use the engine’s pump as distribution manifold only leaving the pump disengaged
* lay lines from the nearest city hydrant. You will have more control over intake and discharge pressures
303
Why should you never gate down intake lines?
This can reduce intake and discharge pressures but sacrifices available volume
304
For drafting the transfer valve must be placed in what position and governor in what mode?
Volume ; RPM
305
What is the max. height for drafting? Measured from where?
* 25ft.
| * measured from the surface of the water to the steamer connection
306
What is the theoretical limit to the length you can draft?
There is none
307
If the surface of the water is ___’ below the steamer do not expect to reach full pump capacity
10’
308
The static source must be deep enough to allow how much water around strainer?
One foot of strainer clearance from the bottom and 18” below the water surface
309
What will shallow placement of the strainer create?
A vortex, drawing air into the strainer and causing loss of prime
310
Pumps rated at 1750 or 2000 GPM must use what to reach full pump capacity?
Both steamer connections
311
Before activating the primer, what should you increase RPMs to?
1000-1200 RPM
312
1500 GPM primer use -
| 1750/2000 GPM primer use -
* 45 seconds
| * 90 seconds when using both steamer connections*
313
Exceeding time limits of primer may cause what to happen?
The electric primer to overheat or the pneumatic primer to reduce air supply
314
When activating primer, allow pressure to build to what before disengaging the primer?
Steady above 50 PSI
315
What should you do after you’ve built steady pressure on discharge gauge and disengaged primer?
Slowly open discharge valve and increase RPM
316
What should you do if there’s a sudden pressure drop?
Simply activate the primer until steady pressure is restored
317
Tankers may be dispatched into areas with hydrants, who should you consult with about preferred water supply?
District chief
318
JFRD tankers pumps?
Single stage 750 GPM centrifugal pumps
319
JFRD tankers are manufactured by who? What pump? Water capacity?
Pierce; utilize Hale or Waterous pump, and hold 2500 gallons vented and baffled
320
What is the pump shift mechanism?
Power take off (PTO)
321
How much foam is carried on tankers?
75 gallons of AR-AFFF Class B foam and 10 gallons of Class A foam
322
Size of quick dump valve?
10”
323
What is the most common use on scene with tanker?
Nurse tanker; place close to the attack engine and supplying water directly
324
If use of the tanker basin is indicated, what will the first tanker do? (4)
* drop the basin on scene in position for the engine to draft
* drop the low level strainer, tarp, and 4-1/2” double male at the scene
* place the tarp on the ground and set up the basin
* dump the water and proceed to the closest water source
325
What is optimum tanker basin placement?
Tanker basin placed in front - only blocks one traffic lane
326
How long does it take to dump 2500 gallons of water from the quick dump valve?
2-3 minutes
327
What are the best fill and dump sites?
Located so tanker engineers can drive the complete route in a straight line without backing up
328
What is tanker refill time?
Approx. 3 mins.
329
What is recommended PDP for tanker filling?
100 PSI
330
What is formula to determine GPM tanker shuttle?
GPM = tanker gallons/time
331
Dual basins : what size short section of PVC to connect basins? How should you secure it?
8-10” section of PVC secured by simple backboard straps
332
Fire pumps combine what three things that can present problems?
* mechanical operation
* electronic controls
* human decision making
333
Friction generated between the impeller and pump water can build heat rapidly if water is not moving, which is common when?
During overhaul
334
What are the ways to recirculate water? (Prevent pump overheating - 4)
* open the pump cooler discharges water into booster tank
* opening tank fill valve even a small amount will discharge more water into tank
* the booster line can be charged and nozzle placed into tank vent
* if water supply is ample an unused hose line can be opened just enough to keep water moving
335
What can contribute to motor overheating?
Unusually hot weather and operating at high RPMs
336
What does the cooling system need?
An adequate supply of coolant and unrestricted air flow through the radiator
337
If unable to build pressure, what is most commonly the cause?
Air in the pump
338
If activating the primer is unsuccessful, what should you do?
Change to RPM mode and increase throttle speed
339
If you can verify the pump is properly engaged and air has been bled, what is the next step?
Verify that you have a water supply
340
When does cavitation occur?
When an attempt is made to pump more water than is available
341
What is the earliest indication of cavitation?
Fluctuating PDP
342
What does it mean when an increase in RPM does not result in a corresponding increase in PDP? Any further attempt to increase pressure will result in what?
* You have maximized your water supply
| * cavitation
343
At critical velocity, any effort to increase velocity (by increasing PDP) creates turbulence in the stream and results in what?
Loss of stream reach and integrity
344
Critical velocity can lead to ?
Pump cavitation and reduced volume from the nozzle
345
If the engineer observes a poor quality stream, what should they consider?
Critical velocity
346
If an increase in PDP does not result in an apparent increase in volume ?
You have reached critical velocity
347
What should the engineer do when critical velocity is reached?
* reduce throttle RPMs
* reduce the nozzle flow - change the smooth bore tip or adjust the fog nozzle flow to the next lower setting
* increase hose size - the same volume that resulted in critical velocity in 1-3/4” hose will flow better through 2-1/2” hose
348
An inability to prime is almost always caused by ____
Air leaks
349
What are the most common causes of air leaks?
Partially open valve or an open bleeder
350
If still unable to draft after taking care of possible air leaks, what should you do?
Attempt to displace air with the booster tank water. At same time you engage the primer, open TANK TO PUMP valve for a few seconds.
351
The pressure created by the weight of air, which is 14.7 psi at sea level and gradually decreases as elevation increases
Atmospheric pressure
352
A device used to protect water supplies from contamination.
Backflow preventer
353
The quantity of water a pump will discharge also see rated capacity) ; Another term for the volume position of the transfer valve enabling the pump to deliver higher volumes of water
Capacity
354
A mechanical device that uses a rotating impeller to increase the pressure of a fluid. The fluid energy pump impeller along the rotating axis and his accelerated by the impeller, flowing in a radial motion outward into a volute from where it exits into the discharge me the phone
Centrifugal pump
355
A gauge indicates both positive pressure psi and negative pressure vacuum
Compound gauge
356
The maximum velocity of a hose stream. Any in attempt to increase pressure beyond Critical velocity results in a drop in discharged volume
Critical velocity
357
When an engine draws water from a static source such as a pond, lake, River, tanker basin, or swimming pool
Drafting
358
The water or foam solution from the time it leaves a Nozzle until it reaches the fire
Fire stream
359
A gauge that indicates flow volume and reads in GPM
Flowmeter
360
A device that mixes water and some concentrate to provide a properly mixed foam solution
Foam proportioner
361
A drop in pressure due to the friction between the water and the inside of a hose, pipe, or appliance. Friction loss increases as diameter is reduced, length is increased, or volume has increased
Friction loss
362
A pressure control device that uses motor speed rpm to control discharge pressure
Governor
363
Gallons per minute, the unit for measuring volume flow
GPM
364
The rotating vein within a centrifugal pump that imports velocity to water
Impeller
365
The pressure exerted by the height of water above a discharge orifice
Head pressure
366
The science of water in motion
Hydraulics
367
Testing of a pressure vessel for leaks or floss. Testing is very important because containers containing compressed gas can rupture violently if they fail
Hydrostatic test
368
Flammable liquids which are compounds of hydrogen and carbon. Includes gasoline, diesel fuel, kerosene, and aviation fuel’s.
Hydrocarbon fuels
369
The pressure exerted in the opposite direction when water is discharge from a nozzle
Nozzle reaction
370
The volume setting of a two stage pump. Water enters both impellers from the intake source. Also called capacity
Parallel
371
A flammable liquid containing polarized molecules which includes alcohols and ketones
Polar solvents
372
Force per unit area. Within a fire pump pressure is produces water leaves in Pellerin enters the volume. This room also identify as one word to settings of the transfer valve, and one of to settings of the pressure governor
Pressure
373
A type of pump that pumps a definite volume with each stroke or revolution. Examples include rotary vein or rotary gear. This does not include centrifugal pumps
Positive displacement pump
374
The unit for measuring water pressure
Pounds per square inch psi
375
To remove air from a centrifugal pump and replace it with water
Prime
376
The pressure setting of the fire pump controlled by the throttle and indicated on the Master discharge gauge
Pump discharge pressure PDP
377
A device that Controls the transfer case or PTO of the fire pump, shifting between the road position and pump position
Pump shift
378
The capacity of a fire pump, as tested at draft by underwriters laboratory you all. Test results are posted on the pump panel of every rated pump
Rated capacity
379
The oxidation process where diesel suit is burned within a diesel particulate filter and turned to ash
Regeneration
380
Water supplied by one or more Engines located remote from the fires in and pumping to the scene through supply house
Relay pumping
381
The unit for measuring motor speed
RPM
382
Pressure setting of a two stage pump. Water enters one impeller which discharges water to the second power
Series
383
A centrifugal pump with a single impeller
Single stage pump
384
Fireground water supply that is motionless
Static pressure
385
Refers to the 4-1/2” connection on a fire hydrant. This term is also used for the 6” side intakes on a fire pump
Steamer
386
Supplying a second engine with residual pressure by connecting intake to intake
Tandem pumping
387
Mechanical device within a two stage pump that changes from pressure operation to volume operation
Transfer valve
388
A centrifugal pump, with two impellers on a common shaft, operating in pressure (series) or volume (parallel)
Two stage pump
389
Any pressure less than 14.7 psi at sea level
Vacuum
390
The quantity of water in gallons per minute GPM. One of two positions for the transfer valve
Volume
391
The Chamber around a pump impeller which converts water velocity to pressure
Volute
392
The forward speed of water as it moves through a hose line or nozzle
Velocity
393
The sudden increase in force that occurs when a Nozzle or valve is open or closed suddenly. The forward velocity of the water reverses direction and doubles its force in the opposite direction
Water hammer
394
1 gallon of water weighs
8.35 lbs.
395
One cubic foot of water contains
7.481 gallons
396
One cubic foot of water weighs
62.5 lbs.
397
Atmospheric pressure at sea level
14.7 PSI
398
Perfect vacuum (theoretical) 
29.9 in. Hg
399
1 pound per square inch (PSI) lifts
2.304 feet
400
Max. lift (theoretical)
33.8 feet
401
NFPA required vacuum
22 in. Hg.
402
NFPA required lift
25 feet
403
Each foot of water in a column exerts
0.434 PSI
404
Fire hose shall be tested between what dates?
March 15 to April 15
405
5” and 6” hose shall be tested at what pressure for how long?
200 PSI for five minutes continuously
406
3” hose or less shall be tested at what pressure for how long?
Per the marked service test pressure (per NFPA 1962) for five minutes continuously. If the service pressure is not indicated, test at 250 psi for five minutes continuous 
407
How do you back flush the pump?
With the pump disengaged pressurize the discharge side of the pump from a hydrant. Briefly open each intake and discharge valve to flush (it is not necessary to flush cross lay piping) 
408
When do you ensure proper operation of chainsaw?
After reassembly, ensure proper operation
409
Daily engine inspection : (15)
* Conduct brief conference with off-going engineer
* Ensure proper fluid levels to include motor oil, transmission fluid, coolant, power steering fluid, and DEF
* Booster tank and foam levels must be checked by visual observation into tank
* Ensure proper air brake pressure both front and rear (>100PSI) and proper operation of brakes
* Tires and wheels - axle seals, tire pressure, tread depth, lug nuts
* Seat belts - ensure all sets operate and adjust properly
* W/motor running check all running lights (including brakes and backup lights) all visual and audible warning devices and scene lighting
* Verify the pump engaged and tank-to-pump open (steps)
* Disengage pump then open/close each manual valve to verify smooth operation
* Open and close all bleeders. Open pump drain
* Tilt the cab and inspect all drive belts for tightness and wear. Check batteries for leaks and tight connections (secure loose equipment prior to tilting)
* View underside of the engine for pump or tank leaks. Check motor, transmission, pump transfer case and drivetrain for fluid leaks
* Sweep dirt and debris from cab and wipe down surfaces as needed
* Inspect apparatus exterior and note any new body damage
410
What is another type of private system (water)?
Private main that is connected to a city main through a meter and back flow preventer
411
Secondary methods to supply large volumes of water on a private system?
* Tanker shuttle
* Laying from nearby city main
* Laying from adjoining private system
412
Where are dry hydrants found?
Near commercial structures (usually at retention ponds) where city hydrants are not within reach
413
To pump high pressures, what does the single stage pump require?
Higher RPM
414
In most pumping situations, what will be the difference in pump performance between single stage and two stage pumps?
Minimal difference
415
The intake side of a centrifugal pump is an open manifold directing water where?
To the impellers
416
Large diameter intakes and discharges use quarter turn valves controlled by hand wheel or electronic control. Due to large volumes, they must be of “slow operating” type, why?
To prevent water hammer
417
The coolant temperature gauge indicates what?
The motor cooling system temperature
418
Where does pump cooler/recirculating water come from?
The supply
419
Where does engine cooler water come from?
Pump water
420
Why should you routinely operate the transfer valve in volume?
This will result in more efficient operation of the pressure governor and is not harmful to the pump or motor
421
```
Minimum hose inventory of each engine company shall consist of :
6” -
5” -
2 1/2” -
1” booster -
10ft hard suction -
High rise packs -
Preconnected 1 3/4” attack handlines-
Wildland hose -
Apartment pack -
```
```
• 25’
• 1000 feet
• 1000 feet
• 200 feet
• 2 (two) sections
• 195’ of 2 1/2” HR hose
• 2 (two) 200 foot 1 3/4 cross lays
All other 1 3/4” attack hoselines length per company Captain
• 200’ of 1” hose
• 100’ of 1 3/4”
```
422
What shall be readily available for laying a supply line?
Rope “hydrant loop” with hydrant wrench and two 5” spanner wrenches
423
A flow of what GPM in 5” hose has a friction loss of 10 PSI per 100’ section?
1200 GPM
424
What is booster line used for?
* Small fires
* Wildland fires
* Overhaul
425
Each engine shall be equipped with what for drafting from natural static water source?
Barrel style strainer and rope
426
Never add what type of foam to any apparatus foam tank?
AR-AFFF
427
Tanker shuttle water supply source considerations?
* Closest supply source with each access should be selected
* Available water
* Turnaround location
* Travel distance
*  The best fill and dump sites are those located so tanker engineers can drive the complete route in a straight line without backing
428
Apparatus cab shall be thoroughly cleaned. Ensure what is accounted for?
All map books, reference books, and keys are accounted for
429
Hydrant locations for Duval County can be found where?
| Water main locations and sizes can also be found where?
On the JAXGIS site :
maps. coj.net/FireHydrantProximity
jaxgis. coj.net/Infrastructure
430
What abnormal motor function condition could result in motor damage?
High coolant temperature or low oil pressure
431
To operate the pump efficiently and safely the engineer needs what?
A device for setting pressure (the throttle) and co trolling discharge pressure (pressure relief)
432
Running the pump dry for more than how long May cause excessive heat and pump damage?
A few minutes
433
What is the volute?
The chamber which directs the pressurized water into the discharge manifold
434
To minimize water hammer temporarily reduce RPMs to idle before operating transfer valve. However, do not sacrifice handlines already in use. If unable to lower pressure to idle, what should you do?
Reduce discharge pressure a safe amount and operate transfer valve slowly, allowing time for governor to adjust
435
How is the pressure relief valve on the PIV/BIV operated?
Spring
436
Bleeding air from intake lines is to critical for what reason?
To avoid loss of prime
437
Activating the primer will do what?
Will remove air from the pump and allow pressure to increase
438
When is the pump primed?
Once air is removed
439
When opening the LDH discharge valve, what may happen?
The PDP may drop suddenly
440
How do you use the pressure governor to serve as a high idle control?
With the pump disengaged, select RPM mode and press PRESET
441
If water supply runs low, the governor will attempt to maintain PDP how?
If the pump cannot maintain what PSI, what will the governor do?
What is this a safeguard to prevent?
* increasing RPM
* at least 30 PSI
* cavitation
442
All gasolines now contain at least 10% ethanol. What is required to achieve proper aeration to extinguish these fires?
AR-AFFF and the Akron foam tube
443
What type of foam will store many years without issue?
AFFF
444
How many onboard twin-cylinder diesel motor generator, kilowatts ?
10 kilowatts
445
JFRD tankers have the following features and equipment : (6)
* 2500 or 3000 gallon portable tanker basin with protective tarp
* 75 gallons or AR-AFFF Class B foam / 10 gallons Class A foam
* two pre-connected 1-3/4” hoselines and a deck gun
* two sections of 3” supply hose (preferred over 2-1/2” hose)
* PIV and LDH discharge valve
* 10” quick dump valve with directional chute (and rear mounted camera)
446
When residual pressure approaches 0 PSI and the impeller speed remains constant, what happens?
The pressure at the eye of the impeller decreases. As this occurs, water temperature will increase at the impeller eye and crest water vapor
