ch 17 test quiz Flashcards
Defensive firefighting operations are conducted from which location?
Exterior
Which statement is correct about simultaneous offensive and defensive operations at the same building?
It is dangerous and should not be done.
What does the C stand for in the acronym SLICE-RS?
Cool the space from the safest location.
Under which circumstances is it considered safe for one fire fighter to safely handle a large handline?
When the handline is stationary and well anchored
Application of water to the base of a fire is a(n) __________ attack.
direct
What is the intention of an indirect fire attack?
Cool hot gases in the fire compartment
What are the first two types of fire suppression operations?
Offensive and defensive
Exposure protection during a defensive operation takes __________ priority.
high
What is an effect of a hose stream that consists of droplets with a large surface area?
Heat absorption is enhanced.
What is the term for the movement of heat and smoke in a structure from an area of higher pressure near the fire to an area of lower pressure?
Flow path
Which statement about ventilating a basement fire is correct?
Ventilation may be difficult due to the limited number of outside openings.
Where should additional equipment be staged on a high-rise fire?
One or two floors below the fire
In a direct attack, water should be applied until:
all visible flame is extinguished.
Defensive firefighting operations are conducted from which location?
Exterior
Which firefighting attack, if successful, will result in the least amount of property damage?
Offensive
Which statement is correct about simultaneous offensive and defensive operations at the same building?
It is dangerous and should not be done.
What does the C stand for in the acronym SLICE-RS?
Cool the space from the safest location
What it the maximum diameter of a small handline?
2” (50 mm)
Which is the minimum flow from a large handline?
250 gpm
Under which circumstances is it considered safe for one fire fighter to safely handle a large handline?
When the handline is stationary and well anchored
Most master stream devices flow:
350 - 1500 gpm
Which is a characteristic of a fog stream?
It creates water droplets with a large surface area.
Which is an advantage of a straight stream over a fog stream?
Longer reach
Which type of stream is most likely to disrupt thermal balance?
Fog
A combination fire attack begins with:
an indirect attack
Application of water to the base of a fire is a(n) __________ attack.
direct
When is an indirect attack indicated?
When flashover is likely
What is the intention of an indirect fire attack?
Cool hot gases in the fire compartment
During an indirect attack, you should flow water until the:
room begins to darken
The use of master streams on a building should be prohibited when:
crews are working inside the building
A master stream device that is permanently mounted on an engine and plumbed directly into the pump is a:
deck gun
Why is it necessary to limit the lowest stream angle of a portable monitor?
To prevent instability of the monitor
What are the first two types of fire suppression operations?
Offensive and defensive
Fire fighters getting close enough to apply extinguishing agent directly on the fire is the objective of which type of operation?
Offensive
In which type of operation are large handlines and master streams more often used?
Defensive
Exposure protection during a defensive operation takes __________ priority.
high
Which term refers to two crews operating hose lines against each other?
Opposing handlines
In modern residential construction, fresh air enters the attic space through which vent?
Soffit
What is the minimum flow from a master stream device?
350 gpm
Master stream devices are most commonly used for which operation?
Defensive
What is an effect of a hose stream that consists of droplets with a large surface area?
Heat absorption is enhanced.
Operations are conducted from inside the fire building in which type of attack?
Offensive
Which statement about hydraulic ventilation is correct?
A fog stream is required
From a doorway, a crew directs a hose stream at the ceiling of a burning room. This is a(n) __________ attack.
indirect
Which statement most accurately describes a transitional attack?
A brief offensive exterior attack followed by interior attack
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 does the E stand for in the acronym SLICE-RS?
Extinguish the fire
What is the term for the movement of heat and smoke in a structure from an area of higher pressure near the fire to an area of lower pressure?
Flow path
Flow path
Turret pipe
An elevated master stream device mounted at the tip of an aerial ladder is a:
ladder pipe
Which fire-extinguishing agent would be the best choice for use on delicate electronic equipment?
Carbon dioxide
Preventing the spread of fire is the primary objective of which fire attack?
Defensive
Which statement about an offensive exterior attack is correct?
Its effects are short-lived.
Attic fires should generally be treated as:
ventilation-limited
Which type of attack is used when the main objective is to protect exposures?
Defensive
What is the minimum number of fire fighters needed to advance and maneuver a 2½” (65-mm) handline inside a building?
2
A portable monitor is an example of:
master stream devices
Peeling or bubbling paint is an indicator of:
concealed fire
Which statement about ventilating a basement fire is correct?
Ventilation may be difficult due to the limited number of outside openings.
Where should additional equipment be staged on a high-rise fire?
One or two floors below the fire
If there is no life-safety hazard, which type of fire attack should be used in a building under construction that has no doors or windows?
Defensive
Which hazard is of particular concern with fires involving stacked or piled material?
Collapse of the stack
What is the best item to aid in the extinguishment of smoldering fires in tightly packed combustible materials?
Class A foam
In a direct attack, water should be applied until:
all visible flame is extinguished
When conducting a transitional attack on an attic fire, streams should be directed through the:
soffit vents
Which hazard presents the greatest risk for a fire in a modern vehicle?
Components containing pressurized gas
What is the minimum size hose line for a vehicle fire?
1½”
How should fire fighters approach a vehicle fire?
45-degree angle from the side
Which hazardous material is commonly found in vehicle batteries?
Sulfuric acid
A vehicle fueled by compressed gas is fully involved in fire. What should be used to fight the fire?
Unmanned master stream
Which special hazard is unique to hybrid vehicles?
High-voltage components
Which is the preferred method to overhaul a trash bin fire?
Use Class A foam to saturate all the fuel
When operating near the suspected area of origin, fire fighters should be especially careful to:
disturb the area as little as possible
Which is the rate at which heat is transferred from one surface to another?
Heat flux
Application of a fire stream to solar panels should be done from a distance of no less than:
20 ft
Which type of stream may be safe for use on solar panels?
Fog
Ideally, which should be used to extinguish a chimney fire?
Dry chemical
Which vehicle fuel or propulsion system presents the potential for BLEVE?
Compressed gas
When shutting down electrical service to a structure, you should:
apply a lockout device
Class _____ extinguishing agents should be used on energized electrical equipment fires.
C
Which cancer-causing material might electrical transformers contain?
Polychlorinated biphenyls
What happens during a transitional attack?
An offensive operation is performed from the exterior.
What is the correct method to stop the flow of gas delivered via an underground utility network 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 LPG storage cylinder?
Close the valve on the cylinder.
Which is another term for liquefied petroleum gas?
Propane
Which is the best way to shut off electrical service to a building?
Use the main circuit breakers
Which statement about using hose streams on a transformer fire is correct?
Application of water may cause splashing and spread of toxic liquids.
Studies by NIST and UL have determined that the movement of fire through a structure is dependent primarily on:
flow path
