A combination fire attack begins with
an indirect attack
A master stream device that is permanently mounted on an engine and plumbed directly into the pump is a
Deck gun
A vehicle fueled by CNG or LPG is fully involved in fire. Which of the following should be used to fight the fire
Unmanned master stream
An elevated master stream device mounted at the tip of an aerial ladder is a
ladder pipe
Application of water to the base of a fire with a straight stream or solid stream is a(n) __________ attack
Direct
Close-range application of water to the fire is the objective of which type of operation
Offensive
Commonly used master stream devices flow
350 to 1500 gpm (1325 to 5675 lpm)
Defensive firefighting operations are conducted from which location
Exterior
Exposure protection during a defensive operation takes __________ priority
High
For which type of operations are master stream devices most commonly used
Defensive
From a doorway, a crew directs a hose stream at the ceiling of a burning room. This is a(n) __________ attack
indirect
How much risk to fire fighters' lives is acceptable in attempting to minimize damage to property that is already severely damaged
None
How should fire fighters approach a vehicle fire
45-degree angle from the side
If it is necessary to approach a horizontal flammable-gas cylinder, you should approach
perpendicular to the side
If there is no life-safety hazard, which type of fire attack should be used in a building under construction
Defensive
In a direct attack, water should be applied until
all visible flame is extinguished
In general, the most effective means of fire suppression is a(n) __________ attack
Direct
In which type of operation are large handlines and master streams more often used
Defensive
Large handlines flow approximately
250 gpm (950lpm)
Master streams are most commonly used for __________ attack
defensive
Operations are conducted from outside of the fire building in which operational mode
defensive
Peeling or bubbling paint is an indicator of
concealed fire
Portable monitors, deck guns, and ladder pipes are examples of
master stream devices
The use of master streams on a building should be prohibited if
crews are working inside the building
What are the two types of fire suppression operations
offensive and defensive
What happens during a blitz attack
a master stream is used for an offensive operation
What is a BLEVE
Flammable liquid vessel rupture and explosion due to external heating
What is a characteristic of a fog stream
It creates water droplets with a large surface area
What is a potential problem associated with an indirect fire attack
Displacement of hot fire gases toward the floor
What is added to propane to give it a distinct odor
Mercaptan
What is an advantage of a straight stream over a fog stream
Longer reach
What is an effect of a hose stream that consists of droplets with a large surface area
Heat absorption is enhanced
What is an indication that a hose stream has cooled ceiling-level gases
Water droplets rain down
What is the best item to aid extinguishment of smoldering fires in tightly packed combustible materials
Class A foam
What is the correct method to stop the flow of gas delivered via utility pipeline into a structure
turn off the valve at the meter
What is the correct method to stop the flow of gas into a structure supplied by an outside storage cylinder
close the valve on the cylinder
What is the minimum flow from a master stream device
350gpm (1325 lpm)
What is the minimum number of fire fighters needed to advance and maneuver a 2?" (65-mm) handline inside a building
3
What is the minimum size hose line for a vehicle fire
1 1/2" (38mm)
What is the most common hazard associated with confined spaces
Atmospheric conditions
What is the most frequently used hose line for interior attack
1 3/4" (45mm)
What is the most severe hazard associated with propane products
BLEVE
What is the objective of an indirect fire attack
Rapid cooling of the atmosphere
What is the target of the hose stream in a direct attack
The base of the fire
What is the target of the hose stream in an indirect attack
The ceiling of the fire room
What it the maximum diameter of a small handline
2" (50 mm)
When approaching a burning flammable liquid vessel to operate the valve, which combination of hose streams should be used
Two 1?" (45 mm)
When can one fire fighter safely handle a large handline
When the handline is stationary and well anchored
When directing the flow of water from the nozzle during a combination attack, where should the flow of water first be directed
Upper-left corner of the fire
When is an indirect attack indicated
When flashover is likely
When shutting down electrical service to a structure, you should
apply a lockout device
When water is converted to steam, it expands to ________ times the volume of an equivalent amount of liquid water.
1700
Where should additional equipment be staged on a high-rise fire
One or two floors below the fire
Where should streams be directed to prevent a BLEVE
At the area where the tank is being heated
Which cancer-causing material do transformers contain
Polychlorinated biphenyls
Which color are the high-voltage cables in a hybrid vehicle
Orange
Which fire-extinguishing agent would be the best choice for use on delicate electronic equipment
Carbon dioxide
Which firefighting attack, if successful, will result in the least amount of property damage
Offensive
Which hazard is of particular concern with fires involving stacked or piled material
Collapse
Which hazard presents the greatest risk for a fire in a modern vehicle
Components containing pressurized gas
Which hazardous material is commonly found in vehicle batteries
Sulfuric acid
Which item is installed on propane cylinders to allow excess pressure to escape
Relief valve
Which of the following is an example of a two-dimensional fire
Flammable liquid spill on open ground
Which of the following is another term for a deck gun
Turret pipe
Which special hazard is found on hybrid vehicles
High-voltage cables
Which statement about hydraulic ventilation is correct
A fog stream is required.
Which statement about using hose streams on an elevated transformer fire is correct
This technique may cause splashing and spread of toxic liquids.
Which statement about ventilating a basement fire is correct
Ventilation must be accomplished as soon as possible.
Which statement is correct about simultaneous offensive and defensive operations at the same building
Simultaneous offensive and defensive operations are dangerous and should not be done
Which term refers to two crews operating hose lines against each other
Opposing hose lines
Which type of attack is used when the main objective is to protect exposures
Defensive
Which type of extinguishing agent should be used on electrical equipment fires
Class C
Which type of fire attack has as its objective preventing the spread of fire
Defensive
Which type of stream is most likely to disrupt thermal balance
Fog
Why is it necessary to limit the lowest stream angle of a portable monitor
To prevent instability of the monitor