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After a fire, electric vehicles and hybrids should be stored at least how many feet from any exposures because of the possibility of a late rekindle?
50 feet
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Commonly used master stream devices flow __________.
350 to 1500 gpm (1325 to 5678 lpm)
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Defensive firefighting operations are conducted from which location?
Exterior
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Elevated master stream device
Nozzle mounted on the end of an aerial device
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Employs both direct and indirect attack methods sequentially
Combination attack
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From a doorway, a crew directs a hose stream at the ceiling of a burning room. This is a(n) __ attack.
indirect
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How should fire fighters approach a vehicle fire?
45-degree angle from the side
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Indirect attack
Used to remove as much heat as possible
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In situations where the temperature is increasing and it appears that the room or space is ready to experience flashover, fire fighters should use a(n)____?
indirect application of water.
-
Ladder pipe
Nozzle while attached to the rungs of a vehicle-mounted aerial ladder
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Master stream device
Used to produce high-volume water streams
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A master stream device that is permanently mounted on an engine and plumbed directly into the pump is a __________.
deck gun
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Master streams are most commonly used for __________ operations.
defensive
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Often, the primary objective in lumberyard fires is?
protecting exposures.
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Portable monitors, deck guns, and ladder pipes are examples of ________.
master stream devices
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A straight or solid stream, flowing between 120 and 180 gpm, may be used in a(n) __________ attack.
indirect
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To decrease the need for manual overhaul during trash container fires, it is very useful to apply
Class A foam.
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What happens during a blitz attack?
An offensive exterior attack is executed to reduce temperatures.
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What is a BLEVE?
Flammable liquid vessel rupture and explosion due to external heating
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When can one fire fighter safely handle a large handline?
When the handline is firmly anchored
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Which firefighting attack, if successful, will result in the least amount of property damage?
Offensive
-
Which hazardous material is commonly found in vehicle batteries?
Sulfuric acid
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Which statement about ventilating a basement fire is correct?
Coordinating ventilation is critical.
-
Which type of operation is used when the main objective is to protect exposures?
Defensive
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The use of master streams on a building should be prohibited if __________.
crews are working inside the building
-
Which type of stream is most likely to disrupt thermal balance?
fog
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When water is converted to steam, it expands to ________ times the volume of an equivalent amount of liquid water.
1700
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How much risk to fire fighters' lives is acceptable in attempting to minimize damage to property that is already severely damaged?
none
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When can one fire fighter safely handle a large handline?
When the handline is stationary and well anchored
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What is an effect of a hose stream that consists of droplets with a large surface area?
Heat absorption is enhanced
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what is the minimum number of fire fighters needed to advance and maneuver a 2.5" (65-mm) handline inside a building?
3
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What is the best item to aid extinguishment of smoldering fires in tightly packed combustible materials?
Class A foam
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What is the most common hazard associated with confined spaces?
Atmospheric conditions
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What is the target of the hose stream in a direct attack?
The base of the fire
-
Where should additional equipment be staged on a high-rise fire?
One or two floors below the fire
-
Which type of attack is used when the main objective is to protect exposures?
Defensive
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In general, the most effective means of fire suppression is a(n) __________ attack.
direct
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Application of water to the base of a fire with a straight stream or solid stream is a(n) _____ attack.
direct
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What is the most frequently used hose line for interior attack?
1.75"
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Which statement about ventilating a basement fire is correct?
Ventilation must be accomplished as soon as possible.
-
Which hazard presents the greatest risk for a fire in a modern vehicle?
Components containing pressurized gas
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Close-range application of water to the fire is the objective of which type of operation?
Offensive
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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
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A burning liquid that is pouring over the edge of a container is known as a ________ fire.
three-dimensional
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If there is no life-safety hazard, which type of fire attack should be used in a building under construction?
defensive
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What is a potential problem associated with an indirect fire attack?
Displacement of hot fire gases toward the floor
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What it the maximum diameter of a small handline?
2"
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What does "SLICERS" mean?
- Size up
- Locate
- Identify/control fire path
- Cool space from safe location
- Extinguish
- Rescue
- Salvage
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Which fire-extinguishing agent would be the best choice for use on delicate electronic equipment?
Carbon dioxide
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