IFSTA ARFF 6th: Ch. 9 Flashcards
Fire Suppression, Ventilation, and Overhaul
Foam handlines should be used for:
a direct interior attack
Non-aspirating devices have an expansion ratio range of :
2:1 to 3:1
Dry chemical turrets are required to have a no wind range of:
100 feet
When fighting fuel spills, firefighters should use a minimum ____ inch handline and apply water in a ____ pattern
1.5 / Fog
ARFF personnel have been most effective when using _____ streams.
Fog and Spray
The “Short Burst” application technique involves applying foam for ___ to ___ seconds.
5 / 10
Which type of gas is used in dry chemical cartridge extinguisher when freezing temperatures are likely?
Dry Nitrogen
Base of the Fire method is usually applied though:
A High Flow Bumper Turret or Low Attack Nozzle
Describe the Maintain escape/evacuation areas method?
Only those fire in evacuation routes are extinguished.
What is the burn-through time for aluminum skin when directly exposed to fire?
1 minutes
Dry chemical extinguishers come in which two basic types?
Stored Pressure
Cartridge-Operated
What are the two most common handlines for ARFF?
Fog nozzle and air-aspirating foam nozzles
What are three ways dry chemical is dispensed?
Handline, piggybacking and water stream injection
What expansion ratio range is commonly associated with low-expansion air-aspirating equipment?
6:1 to 10:1
Rain down method directs the stream in the air at a ___ degree angle above the fire or spill.
40
After 3-dimensional fuel fires are extinguished, what should ARFF personnel do next?
Close fuel system valves or plug fuel lines or tanks to stop the leak
Stored pressure extinguishers contain a constant pressure of about:
200psi
What kind of wind can help extend the effective range of a turret stream?
Tailwind
What is the agent of choice for fighting engine or APU/EPU fires?
Clean, gaseous extinguishing agents
APU/EPU shutdown procedures can be accomplished from flight deck/cockpit or :
External Fire Protection Panel
Arming extinguishing agent bottles, will also simultaneously deactivate:
Power plant’s fuel
Hydraulic System
Electrical System
Pneumatic Connections
Company officers or other apparatus can place themselves at a ____ angle to view the effectiveness of the turrets reach
45
A straight stream is the best nozzle pattern to use in what condition?
well-involved, unventilated aircraft interior
Dry chemical extinguishers use either ____ or ____ as the pressurizing gas
Nitrogen or CO2
IFSTA defines a handline nozzle as:
any nozzle that one to three firefighters can safely handle flowing less than 350 gpms
What does directing turret streams along fuselage length help?
Pushing fire away from the fuselage
Cool the fuselage
Protect evacuation occupants
Aid rescue team entry
What can fire in baggage/cargo areas potentially do?
Weaken the floor supports for overhead compartment and lead to collapse
What can splashing fuel during foam application lead to?
Fuel reaching an ignitable fuel-air mixture
Describe the total extinguishment method?
All efforts are directed toward extinguishing all fires surrounding the aircraft
Where are external APU/EPU fire protection panels located?
panels in forward wheel well
Inside the main wheel well
On the belly
In the tail
Which two attack methods does the IC have to choose between upon arrival of an aircraft accident with fire involvement?
Total Extinguishment
Maintain escape/evacuation areas
What kind of foams are suitable for use with non-aspirating application?
Film-forming foams
Application of protein or fluoroprotein foams requires which type of nozzle.
Air-aspirating
Where should the first fire streams be directed to?
areas where evacuation is underway
What are four basic methods of applying foam?
Roll-on
Deflection/Bank-Down
Base of the fire
Rain-down
Dry chemical handline are required to have at least ____ feet of hose and a range of ____ feet
100 / 25
Fires in baggage and cargo areas can weaken ______ that could lead to _______
floor supports / collapse
The preferred method of extinguishing APU/EPU fires is from:
Flight deck/cockpit
External fire protection panel
Which (3) areas are external APU/EPU fire protection panels located?
Wheel Wells
On the Belly
In the Tail
Arming aircraft extinguishing agent bottles, simultaneously deactivate which (4) systems?
Fuel
Hydraulic
Electrical
Pneumatic
APU/EPU cowlings should be opened from the _______ point to the _______ point.
Lowest / Highest
The safest approach to mitigating wheel assembly fires is:
apply large amounts of water from a distance
Auxiliary rocket engines may be mounted to:
Nacelles
Tail-cones
Aircraft Belly
ARFF personnel should avoid opening roof areas near the slope of nose and tail because:
these areas are highly reinforced and may not access main cabin
During overhaul, personnel may need to remove these (4) areas to access deep seated, concealed fires?
Carpeting
Wall Panels
Partitions
Ceiling Coverings
