Combination attack
A type of attack employing both direct attack and indirect attack methods
Deck gun
An apparatus mounted master stream device that is intended to flow large amounts of water directly onto a fire or exposed building
Base of the fire
Where does a direct fire attack deliver the water?
To the base. To the perimeter of the burning area, right to the middle of the flames, to the hottest part of the flame just above it.
Ventilation
This can be difficult when fighting a basement fire.
Use of thermal imagers. Ventilation. Lighting. Exterior access points.
Directed onto the base of the fire
In a direct fire attack how is the water discharged onto the fuel.
Continuously toward the same target. In a sweeping motion extending out several feet from each side of the fire. Directed onto the base of the fire. In a circular pattern directed toward t
Brake drums
Which is not a hazard on modern vehicles.
Plastics. Airbags. Hydraulic pistons. Brake drums.
Offensive
In what kind of operation is the objective for fire fighters to get close enough to the fire to apply extinguishing agents at close range.
Intervention. Exposure protection. Offensive. Reactive.
The ceiling
In an indirect fire attack, where is the water directed.
The base of the fire. The ceiling. The center of the flames. A point just above the orange/yellow demarcation in the flame.
Offensive or Defensive
All fire suppression operations can be classified as either one type or another. What are the two types?
Offensive or Defensive. Interior or Exterior. Rescue or recovery. Proactive or Reactive
250 or more
How much water can large handlines flow in gallons per minute?
250 or more. About 175. 140 to 150. Exactly 125.
Defensive only
Are master streams used for offensive or defensive operations?
Both. Offensive only. Defensive only. Neither.
Master stream
What water delivery device flows a minimum of 350 gallons per minute?
Master stream. Large handline. Two and a half. Combination attack line.
Venting smoke and heat out a window
What is one use for a fog stream besides putting water on a fire?
Grounding a live electrical wire. Fireground communications signals. Freezing the thermal layering into place. Venting smoke and heat out a window.
Turret pipe
What is another term for a deck gun?
Port-a-pipe. BF monitor. Roof monitor. Turret pipe.
Under no circumstances
Under what circumstances should a master stream device be directed into a building where firefighters are operating inside?
Only when the whereabouts of every person inside is known by the master stream operator. Only when the fire is clearly getting the
High priority
During a defensive firefighting operation, what priority does exposure protection take on?
No priority; the exposures are be definition already lost. Low priority. Medium priority; about a fifth of the resources should be directed to it. High priority.
two-dimensional
A spill, pool, or open container of liquid that is burning only on the top surface is known as a....
One-dimensional. Two-dimensional. Three-dimensional. Four-dimensional.
Direct and indirect
What are the two different methods of discharging water onto a fire? Direct and indirect. At the base and at the flame. Following the smoke of following the light. In bursts or continuously.
Exterior
From where are defensive friefighting operations conducted?
Interior. Roof. Exterior. Staging area.
Class A foam
What can be used to aid in extinguishment of smouldering fires in tightly packed combustible materials, piles, or trash containers?
Class A foam. Class B foam. Class C foam. Class D foam.
Unmanned master stream
How should fire be fought on fully involved alternative fuel vehicles?
13/4". 21/2". Booster line. Unmanned master stream.
That pattern absorbs heat efficiently
What is the relevence of water being divided into droplets with a very large surface area in a fog stream.
That pattern cools surfaces without converting into steam. Roughly 1500 times more wetting actually occurs than with a straight stream. Water in the
1 1/2
What is the minimum size hose line firefighters should use to fight a vehicle fire.
1 1/2". 2 1/2". 3". 3 1/2
To quickly remove as much heat as possible from the fire atmosphere
What is the objective of an indirect fire attack?
To extinguish the fire directly and immediately. To quickly remove as much heat as possible from the fire atmosphere. To mix the fire gases with water vapor, diluting them. To cause the fire gases to conde
A continous column of water
What would describe the appearance of a solid stream?
A continuour column of water. A room-filling fog. A stuttering jackhammer of water. Two intertwined loops of water, not unlike a decorative fountain.
Water droplets are raining down
What is one indication during an indirect attack that the ceiling has coooled?
Billowing steam is produced. Ceiling takes on a blackened color. Whooshing sounds are heard. Water droplets are raining down.
Collapse
What is the greatest danger to firefighters when fighting a fire involving stacked or piled materials?
Collapse. Heat. Volume of water used. Products of combustions.
Fog
Which type of nozzle moves more air and is therefore more likely to disrupt the thermal balance?
Solid. Straight. Cellar. Fog.
1 3/4
There are two hose lines sizes that are used most frequently for interior fire attack. What is one of them?
1 3/4". 1 1/4". 1". 1/2".
Hot fire gases and steam can be forced down onto the firefighters, which can cause burns.
What is one danger with an indirect fire attack?
A building can explode if it is not properly vented and is subjected to an overpressure of only 5 psi, which steam can do.
Copious amounts of carbon monoxide are produced from indirect attack.
Indirect atta
45-degree angle
How should firefighters approach a vehicle fire?
90-degree angle. 45-degree angle. From the front. From the back.
When it is well-anchored.
Under what circumstances can one firefighter control a large handline?
Under no circumstances. Under any circumstances. When the nozzle pressure is at 125 psi or more. When it is well anchored.
Mercaptan
What is added to propane to give it a distinct odor?
Mercaptan. Triptan. Sulfur. Methane.
It creates water droplets with very large surface area.
What is one characteristic of a fog stream?
Is has a long throw for reaching distant targets. It wets a surface without actually cooling it. It creates water droplets with a very large surface area. It is nearly ineffective at absorbing heat.
Low oxygen level
Which of the following is a common hazard of confined spaces?
Low combustible gas level. Constrained movement. Low oxygen level. High oxygen level.
Combination Attack
A type of attack employing both direct attack and indirect attack methods
Deck gun
An apparatus mounted master stream device that is intended to flow large amounts of water directly onto a fire or exposed building.
Direct Attack
Firefighting operations involving the application of extinguishing agents directly onto the burning fuel.
Elevated master stream device
A nozzle mounted on the end of an aerial device that is capable of delivering large amounts of water onto a fire or exposed building from an elevated position.
Indirect application of water
The use of a solid object such as a wall or ceiling to break apart a stream of water, creating more surface area on the water droplets and thereby causeing the water to absorb more heat.
Indirect attack
Firefighting operations involving the application of extinguishing agents to reduce build up of heat released from a fire without applying the agent directly onto the burning fuel.
Ladder pipe
A nozzle attached to the end of a straight ladder truck that is designed to provide large volumes of water from an elevated position
Master stream device
A Large capacity nozzle that can be supplied by two or more hose lines or fixed piping. Can flow in excess of 300 gallons per minute. Included deck guns and portable ground monitors.
Portable monitor
A master stream appliance that is designed to be set up and then be left to operate unattended. A portable monitor is used to flow large amounts of water onto a fire or exposed building from a ground level position.
Solid stream
A stream made by using a smooth bore nozzle to produce a penetrating stream of water.
Straight stream
A stream made by using an adjustable nozzle to provide a straight stream of water.