(1) TB 88- Air Foam Brush Patrol Flashcards
Compressed air foam brush patrol:
____ (low/med/high) expansion ratios are suited for putting down barriers, exposure protection and some mop-up applications
Medium
Compressed air foam brush patrol:
____ (low/med/high) expansion ratios are effective insulators and suited for exposure protection
High
A ___% Class “A” Foam mixture is utilized for aerial water drops on brush fires
.1%
The .1% mixture results from adding approximately 1/3 of a gallon of concentrate to the helicopter water tank after the tank is filled with water
Compressed Air Foam Brush Patrol:
What foam type would best be used for direct application on a fire?
A wet, fluid foam with fast drain time
Compressed Air Foam Brush Patrol:
What foam type would best be used for indirect application (exposure protection). This foam will adhere to walls, eaves, roofs, ect.
A dry foam with slow drain times will adhere to vertical surfaces and provide and insulating layer to exposed combustibles.
Compressed Air Foam Brush Patrol:
When applying dry foam (low drain time) to outside walls, eaves, roofs, etc., A ___ inch foam layer is appropriate.
1/2”
A ____ (fluid/dry?) foam can be utilized to provide a firebreak or to increase the defensible area around a structure.
Fluid foam
Compressed Air Foam Brush Patrol:
The removable CAF system includes a ____ gal WATER tank
150 gal
Compressed Air Foam Brush Patrol:
The removable CAF system includes a ____ gal FOAM tank
10 gal
Compressed Air Foam Brush Patrol:
The removable CAF system includes a ____ gpm water pump
50 gpm
Compressed Air Foam Brush Patrol:
Do not engage the 4WD “HIGH” mode above speeds of ___ mph and/or if the front wheels are slipping
55 mph
Compressed Air Foam Brush Patrol:
•True or False? To engage “4x4 LOW” setting, you must first bring the vehicle to a complete stop.
•What about for the “4x4 HIGH” setting?
•True
•The “4x4 HIGH” setting can be set while the vehicle is traveling below 55 mph
Compressed Air Foam Brush Patrol:
When driving through water, avoid water higher than the bottom of the ___ (if possible) and proceed slowly.
Hubs
Compressed Air Foam Brush Patrol
What traction shift selection (2wd/4x4 High or Low /overdrive/etc?) is recommended for driving:
On-highway, dry, hard pavement where maximum FUEL ECONOMY is desired.
2WD overdrive mode
Compressed Air Foam Brush Patrol
What traction shift selection (2wd/4x4 High or Low/overdrive/etc?) is recommended for driving:
On-highway, dry, hard pavement with maximum loads; where steep roads are encountered.
2WD mode
(Deactivating the OVERDRIVE function is useful, for example, when more engine braking is required as when operating with a heavy load up or down steep hills.)
Compressed Air Foam Brush Patrol
What traction shift selection (2wd/4x4 High or Low/overdrive/etc?) is recommended for driving:
On-highway and off highway; unpaved graded (fire road) road surface
4WD high mode
Compressed Air Foam Brush Patrol
What traction shift selection (2wd/4x4 High or Low/overdrive/etc?) is recommended for driving:
Off highway; extreme conditions: unpaved, steep road surfaces; off road, varied terrain: mud, sand, water.
4WD LOW Mode
Compressed Air Foam Brush Patrol
To prevent damage, the electronic shift 4WD is designed to allow up to ___ seconds before the shift command is performed.
45 sec
Compressed Air Foam Brush Patrol
Compressor control #1 in “auto” position:
Under static conditions with pressure between 75 and 120, this control will balance air and water pressures within ___ psi
5 psi
Compressed Air Foam Brush Patrol
What 3 things should be checked if the COMPRESSOR temp warning light/alarm activates?
(1) Check to see there is water in the tank.
(2) Check the temperature of water in the tank.
(3) Check heat exchanger circuit strainer for clogs.
Compressed Air Foam Brush Patrol
The auxiliary engine cooler should be opened if engine temp exceeds ____°F
210°F
Compressed Air Foam Brush Patrol
Water psi is controlled by engine RPM. Minimum pressure is ___ psi and maximum pressure is ___ psi.
40 and 160 psi
Compressed Air Foam Brush Patrol
How many 1” hose lines can be supplied with the CAF?
What type/size nozzle shall be used?
•3
•3/4 to 1” smooth bore
Compressed Air Foam Brush Patrol
How many 1 1/2” hose lines can be supplied with the CAF?
What type/size nozzle shall be used?
•1
•3/4 to 1 1/4” smooth bore
If using the brush patrol apparatus to supply auxiliary air (power pneumatic tools), you can advance the throttle to desired air pressure with ____ psi being the maximum.
165psi
When supplying auxiliary air (power pneumatic tools) with the brush patrol, monitor booster tank temperature during prolonged operation to avoid overheating. Provide water supply if oil separator tank temperature exceeds ___ degrees F (an alarm sounds at ___ degrees F).
•160°F
•180°F
Before shutting down the brush patrol after pumping operations, let engine idle for ___ min.
1
Compressed Air Foam Brush Patrol
Diesel fuel capacity?
10 gal
Compressed air foam brush patrol:
____ (low/med/high?) expansion ratios have a wide range of application including flame knockdown, immediate wetting and mop-up.
Low
Class “A” Foam is a synthetic, detergent based, hydrocarbon surfactant. Firefighting effectiveness of water improves when a surfactant is added because:
a. Water penetrates the fuel faster
b. Increased absorption occurs
c. Fog nozzle droplets are three times smaller resulting in increased surface area of water applied
d. Water becomes slippery, reducing friction loss
e. Water is attracted to carbon
When Class “A” Foam concentrate is added to water, foam solution is produced. Recommended foam mixtures range from .1% to ____%
1%
______ is the time required for a certain amount of foam solution to drain away from the foam mass. This is an indication of the durability of the foam and how quickly the foam solution will be released
-Drain time
•Foams with quick drain times are suited for flame knockdown, immediate wetting and mop up.
•Foams with longer drain times are better suited to exposure protection.
Foam type describes the combined attributes of a foams expansion ratio and drain time. FOAM TYPES are segregated as follows:
•FOAM SOLUTION
(1) A clear to milky fluid
(2) Lacks bubble structure
(3) Mostly water, very little air
•WET FOAM
(1) Watery
(2) All sizes of bubbles present, small to large
(3) Lacks body
(4) Fast drain times
•FLUID FOAM
(1) Consistency similar to watery shaving cream
(2) Small to medium bubbles present
(3) Flows easily
(4) Moderate drain times
•DRY FOAM
(1) Consistency similar to dry shaving cream
(2) Small to medium bubbles present
(3) Mostly air
(4) Clings to vertical surfaces
(5) Slow drain times
_______ or______ foam is best for mop up applications.
Foam solution (no bubbles) or wet foam
Perform the following maintenance items following use to ensure readiness:
1) Refill water tank.
2) Refill foam cell.
3) Refill diesel fuel tank.
4) Check engine oil level.
5) Check air compressor oil level.
6) Park apparatus on an incline to drain water and prevent premature deterioration of body.
Shift sequences for 2WD mode:
•Use 2 (SECOND) to start up on slippery roads or to provide additional engine braking on downgrades.
•Use 1 (LOW) to provide maximum engine braking on steep downgrades.
•To shift from OVERDRIVE to DRIVE press the Transmission Control Switch on the end of the gearshift lever. The word “OFF” will be displayed on the end of the gearshift lever. The transmission will now operate in gears one through three.
Foam concentrates have health effects similar to those of household detergents. Concentrates can produce EYE IRRITATION and DRY SKIN.
The following precautions should be taken when handling the product:
1) Wear goggles, waterproof gloves, and rubber boots when mixing concentrates.
2) Clothing soaked in concentrates should be rinsed out.
3) Eyes splashed with concentrate or solution should be flushed with clean water for 15 minutes.
4) Hand lotion should be used to avoid dry skin and chapping.
5) Spilled concentrate should be cleaned up with an absorbent
material. Avoid walking over an area blanketed with foam as it may conceal objects and holes.
6) Avoid contaminating water sources with concentrate or solution.
7) When using CAFS, avoid opening valves quickly since this can result in a firefighter losing control of the hose or being knocked down.
