Driver Engineer Guidebook Flashcards
There are three factors that affect friction loss. They are:
- The diameter of the hose
- The volume of water flowing expressed in gpm
- The length of the hose lay
_______ is the pressure at a specific pump discharge.
Discharge pressure (DP)
The use of a single hose line, typically 2 1/2”, 4-inch, or 5-inch, to supply two smaller attack lines is referred to as a ______ evolution.
wyed line
Connect the appropriate adapter ( ____” FEC or _____” NST)
4” FEC or 4 1/2” NST
Remove the steamer cap of the hydrant, open hydrant until a clear, solid stream is produced; flow for ___ - ___ seconds and then close the hydrant.
5 - 10
When spotting apparatus with hydrant on the driver’s side you will need _____ feet.
15
When spotting apparatus with hydrant on the officer’s side you will need ____ feet.
4
In sprinkler and standpipe fire protection systems, the vertical pipes that carry water to the upper floors are called _____ and are usually _____ inches or more in diameter.
risers , 4
Friction loss should be accounted for if the pipe diameter is less than ____ inches.
4
The most common pumping situations for multi-story buildings for this department are:
- Through lines laid up stairs taking into consideration exiting and movement of suppresion forces.
- Through a line or lines suspended on the outside of a building
- To a sprinkler system
- To a standpipe/sprinkler system
T or F: It should be noted that elevation means above or below a given point.
True
As it relates to hydraulic calculations, the _______ refers to the midline of the pump.
elevation point
There should never be less than _____ 2 1/2 inch lines supplying a sprinkler system FDC.
two
Suspended Line Ops: The line should be secured at the ____ floor, the ____ floor and every ____ floor between the top and bottom.
first, fire, third
Suspended Line Ops: There should never be more than ___ floors between secured points.
2
The pump operator should maintain ____ psi to the sprinkler system FDC.
150
If the fire continues to progress, pertaining to a sprinkler system FDC, increase the DP to _____ psi maximum, by _____ psi increments.
200 , 25
______ systems are the main source of water supply for fighting fires in high-rise or large buildings.
Standpipe
Class I :
2 1/2 inch oulets for fire department use
Class II :
1 1/2 inch hose outlets for occupant use
Class III :
Combination standpipe, incorporates both Class I and Class II into a single system
In most cases, buildings that are _____ stories, or ____ feet and above, have standpipe systems.
five, fifty
Buildings of less than ____ stories may have dry systems, if they have any at all.
five
All new buildings that are ___ stories or more in height, except for open air parking structures that are a minimum of 20 feet from other structures, shall be fire sprinkler protected.
three
Manual standpipes are usually found in buildings less than ___ feet in height.
50
Standpipe systems in taller buildings are automatic ______ systems, which means they have a constant water supply.
wet standpipe
The vertical pipe that carries water to the upper floors is called a ____ and is from ___ to ___ inches in diameter and no allowance for FL is necessary.
riser, 4 to 6
Remember, it is mandatory that a minimum of ____ 2 1/2 inch lines are used to supply standpipe or sprinkler systems.
two
Maximum discharge pressure for 2 1/2 inch hose is _____ psi whereas maximum discharge pressure for LDH is ____ psi.
350 , 185
The friction loss of the standpipe system itself; generally accepted to be ____ psi.
25
_____ apparatus should be given priority for positioning at building fires.
Aerial
Consider spotting the apparatus on the corner of the building allowing access to ____ sides.
two
Aerial Rescue: Remove victims in the following priority:
- Most severely threatened by current conditions.
- Largest number of groups of people.
- Remainder of people in the fire area.
- People in exposed areas.
Aerial Operations: If possible, spot the truck ___ feet from the building.
30
The best spot, for advancing the pre-connected hand-lines is _______.
in line with the avenue of entry.
Aerial Ladder Order of Movement/Operation:
- Elevate
- Rotate
- Extend
- Lower
Relay pumping is used to overcome FL in supply hose and is based on three factors:
- The diameter of the hose
- The amount of water required
- The distance from the water source to the attack pumper.
The maximum speed for laying supply line is ____ MPH.
15
Maximum PSI for 4” LDH is _____ psi.
185
Remember that the FL in the 4” supply line is 20 psi/100’ @ ______ gpm.
1000
While operating apparatus equipped with a pressure governor, the attack pumper should be set to the ______ mode, while all others in the relay should be set to _____ mode.
PRESSURE , RPM
Attack pumpers, PDP is determined by ______.
fire attack
Most frequently, drafting operations are done only for the _______.
Underwriter’s Service Test
A drafting operation is best done by a crew of _____ or more.
four
If the priming device does not discharge water within _____ seconds (1500 GPM pump), perform trouble shooting procedures.
45
70 percent of its rated capacity at ____ ft. of lift and 60 percent at ____ ft.
15 , 20
For testing purposes, no more than ____ ft. of lift through _____ ft. of hose.
10 , 20
For best results, allow ____ feet of water on all sides of the strainer.
2
Pressure governor should be kept in the _____ mode until a successful draft is obtained.
RPM
For drafting operation, increase throttle between ____ and _____ rpm.
1000 , 1200
Prime should be obtained between ____ to ____ seconds.
10 to 15
Drafting Operations: Before opening any discharges, increase throttle and maintain ____ to _____ psi on master discharge gauge.
50 to 100
A high reading on the vacuum side of the compound gauge with no water entering the pump within the proper time indicates that the suction lift is too ____ or the strainer is obstructed.
high
AFFF is used at ___% or ____% to extinguish hydrocarbon fires, and ___% for polar-solvent (water-miscible) fires and oxygenated fuel blends.
1 , 3 , 3
Application Rates for AFFF: Class A - Wetting \_\_\_\_\_\_% Hydrocarbons \_\_\_\_\_\_% Ethanol \_\_\_\_\_\_% Super Suppression \_\_\_\_\_%
1/2%
1%
3%
6%
The trailer (Foam 2) carries two _____ gallon totes of concentrate.
275
IN-LINE Eductor : cam lock fitting
cam lock fitting
Place foam eductor no more than ____ feet form the nozzle.
200
IN-LINE EDUCTOR: Slowly increase pump discharge pressure to ____ psi.
200
Using clean water, flush all hoses, educators, and equipment used for product application for a MINIMUM OF ______ MINUTES.
2
Prior to flushing for foam clean-up, ensure that the eductor hose is _______ from the cam fitting on pump panel to avoid over pressurizing foam equipment.
disconnected
The Elkhart Built-In, By-Pass Eductor System, Model 240-125P is found on _____, ______, & ______ and is rated for _____ gpm flow.
FDP001, FDP005-007, & FDA050
125
Elkhart System: Slowly increase pump discharge pressure to ____ psi.
200
For Shut-Down Procedures for foam ops be sure to open the _____ and 1 3/4 inch handline and flow water of a minimum of 2 minutes.
Foam System Drain
Elkhart Eductors: These eductors are designed to achieve rated flow with an inlet pressure of _____ psi.
200
The Foam Pro 2000 system is found on _____ & _____ (these pumpers now use external in-line foam eductors).
FDP 008 & FDP009
T or F : It is not necessary to pump at 200 psi for The Foam Pro 2000.
True
T or F : Unlike the apparatus equipped with the Elkhart Built-In, By-Pass Eductor system, more than one discharge can be used for operation with The Foam Proportional 2000.
True
Spot the foam trailer less than ____ feet away from the driver’s side pump panel.
20
A ____ is the preferred water supply for foam operations.
hydrant
Remove two seals from the bottom of _____ of the 275 gallon foam totes.
ONE
Note: No foam will be supplied until the ____ pin is pulled and the _____ ball valve is rotated.
orange , red
T or F: The smaller, open end, of the T-fitting is to be used for supplying a Foam Eductor.
True
FoaMidget : Connect the _____ colored hose to a
2 1/2” discharge.
maroon
FoaMidget Ops : T or F : DO NOT open the Tank Fill valve.
True
Open the 2 1/2” discharge to supply the FoaMidget with _____ psi (maroon line).
150
The FoaMidget is a _______ powered device that supplies foam concentrate to the 2 1/2” axillary intake of the pumping apparatus.
venturi
The FoaMidget WILL NOT WORK unless ____ psi is maintained.
5
Test the brakes by making a sudden stop: the distance traveled my be as little as ____ feet.
ten
Any air leak causing the warning buzzer or light to signal low air pressure on a vehicle that has been driven within the last ____ hours, must be reported to the fire department shop.
24
The fluid levels should be checked while the engine is ____.
cold
A pressure gauge must be used weekly ( _____ for front line apparatus, ______ for reserve apparatus.
Mondays , Sundays
T or F : All air pressure testing must be done on a cold tire.
True
The voltmeter should show ____ to _____ volts when the charging system is operating normally.
13 to 14.5
The fuel should be maintained at not less than ____ of a tank.
3/4
UREA : System should be maintained at no less than ____ a tank.
half
Urea tanks have a _____ gallon capacity.
5
Drive belts must be checked for tightness: about ____ inch of play is correct.
1/2
Gauges : Air ____ psi
90-120
Gauges : Oil ____ psi at idle / _____ psi maximum.
10-20 , 45-75
Gauges : Voltage _____ volts.
13-14.5
Gauges : Amps ______ amps.
50-160
Gauges : Engine Temp ______ diesel / ______ gasoline.
180-210 / 190-220
Gauges : Transmission Temp _______
180-210
T or F : All fluids added to the unit must be recorded, except water used to refill the booster tank.
True
Research has shown that an antilock brake system can decrease the chance of a vehicle accident by _____%
18
T or F : A skidding wheel has less traction than a non-skidding wheel.
True
There are four main components to an ABS system:
- Pump
- Valves
- Controller
- Speed sensors
The ABS System : In position one, the valve is _____.
open
The ABS System : In position two, the valve ____ the line.
blocks
T or F: The ABS System: In position three, the valve releases some of the pressure from the brake.
True
The ______ watches the speed sensors and controls the valves.
controller
Some ABS systems can cycle up to _____ times per second.
15
The Jake Brake uses ______ to slow the vehicle.
engine compression
