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46 Cards in this Set
- Front
- Back
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Most _______ ______ carry water directly from the attack engine to a nozzle that is used to direct the water onto the fire.
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attack hoses
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Attack hoses usually operate at _______ pressures than ______ lines do.
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higher / supply
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The hoses most commonly used to attack interior fires are either ____ inches (38 millimeters) or ___ inches (45 millimeters) in diameter. Each section of attack hose is usually ___ feet (15 meters) long.
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1½ / 1¾ / 50
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Attack hose must be tested ______ at a pressure of at least _____ psi (2068 kPa) and is intended to be used at pressures up to ____ psi (1896 kPa).
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annually / 300 / 275
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Depending on the pressure in the hose and the type of nozzle used, a 1½-inch (38-mm) hose can generally flow between ___ and ____ gpm (227 and 473 L/sec). An equivalent 1¾-inch (44-mm) hose can flow between ____ and ____ gpm (454 and 681 L/sec).
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60 / 125
120 / 180 |
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A ___-inch (64-mm) hose is used as an attack line for large fires and generally delivers a flow of approximately ____ gpm (946 L/sec).
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2½ / 250
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It takes at least ___fire fighters to control a 2½-inch (64-mm) handline safely because when the hose is charged with water it can weigh as much as ____ pounds (91 kilograms).
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two / 200
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________ ______ contains a steel wire that gives it a rigid shape so that the hose can flow water without pulling all of the hose off the reel.
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Booster hose /
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The normal flow from a 1-inch (25-mm) booster hose is in the range of ___ to ___ gpm (151 to 189 L/sec). This type of hose should not be used for structural firefighting.
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40 / 50
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Attack hose is loaded so that it can be quickly and easily deployed. The three most common hose loads used for preconnected attack lines are the:
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minuteman load, the flat load, and the triple-layer load
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A section of a divided hose bed at the rear of the apparatus can be loaded with a __________ attack line.
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preconnected
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Transverse hose beds are installed above the pump on many engines and loaded so that the hose can be pulled off from _________ _______ of the apparatus.
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either side
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Preconnected lines can be loaded into special trays that are mounted on the ____ of fire apparatus.
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side
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Many engines include a special compartment in the front bumper that can store a short ________ hose line.
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preconnected
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To reach a fire that is some distance from the engine, it might be necessary to first advance a larger-diameter line, and then split it into two ____-inch (45-mm) attack lines. This is accomplished by attaching a ______ ____ or a _______ _______ to the end of the 2½-inch (65-mm) line, and then attaching the two attack lines to the gated outlets.
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1¾ / gated wye / water thief
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Attack line is stretched in _____ stages.
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two
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First, the hose is laid out from the attack engine to the building entrance or to a location close to the fire. Then, the hose is advanced into the building to reach the fire. Extra hose should be deposited at the __________ to the fire building. Make sure you ______ out the hose before it is charged with water.
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entrance / flake
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When you are given the command to advance the hose, keep ________ as your number one priority.
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safety
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As you move inside the building, stay _____ to avoid the greatest amount of heat and smoke. Communicate with the other members of the _______ ________ as you advance.
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low / nozzle team
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As you advance the hose line, you need to have _________ _________ to enable you to move forward.
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enough hose
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Charged hose lines are not ____________ ____ __________. It is only with good teamwork that efficient hose line advancement can occur.
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easy to advance
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________ are attached to the discharge end of attack lines to give fire streams shape and direction. _________ are used on all sizes of handlines as well as on master stream devices.
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Nozzles
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Nozzles can be classified into three groups:
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• Low-volume nozzles
• Handline nozzles • Master stream nozzles |
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_____________ ________ flow ___ gpm (151 L/sec) or less. They are primarily used for booster hoses; their use is limited to small outside fires.
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Low-volume nozzles / 40
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Handline nozzles are used on hose lines ranging from ___ inches (38 millimeters) to ____ inches (65 millimeters) in diameter. Handline streams usually flow between ____ and ______ gpm (227 and 1324 L/sec).
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1½ / 2½
60 / 350 |
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Master stream nozzles are used on deck guns, portable monitors, and ladder pipes that flow more than ____ gpm (1324 L/sec).
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350
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_________ __________ enables the fire fighter at the nozzle to start or stop the flow of water.
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Nozzle shut-off
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Two different types of nozzles are manufactured for the fire service:
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• Smooth-bore nozzles
• Fog-stream nozzles. |
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______________: Produce a solid column of water.
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Smooth-bore nozzles.
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____________: Separate the water into droplets. The size of the water droplets and the discharge pattern can be varied by adjusting the nozzle setting.
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Fog-stream nozzles
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____________: Used to make a hole in sheet metal or building walls to extinguish fires.
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Piercing nozzles
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_____________: Used to fight fires in cellars and other inaccessible places such as attics and cocklofts.
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Cellar nozzles and Bresnan distributor nozzles.
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_____________: Used to deliver a flat screen of water that forms a protective sheet of water on the surface of an exposed building.
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Water curtain nozzles.
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Firefighting ______ can be used to fight multiple types of fires and to prevent the ignition of additional fuels. Several different types of _____ are used for fires involving different types of fuels.
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foam
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Two Class of Foam
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Class A or B
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Class ___ foam is used to fight fires involving ordinary combustible materials, such as wood, paper, and textiles.
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A
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Class ___ foam is used to fight Class B fires, or fires involving flammable and combustible liquids.
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B
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Foam extinguishes flammable-liquid fires by _________ the fuel from the fire. When a blanket of foam completely covers the surface of the liquid, the release of ___________ ________ stops. Preventing the production of additional vapors eliminates the fuel source for the fire, which extinguishes the fire.
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separating / flammable vapors
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Foam _________ is the product that is mixed with water in different ratios to produce foam solution. The foam ___________ is the product that is actually applied to extinguish a fire or to cover a spill.
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concentrate / solution
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The major categories of Class B foam concentrate are:
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protein foam, fluoroprotein foam, film-forming fluoroprotein, aqueous film-forming foam, and alcohol-resistant foams
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Compressed air foam systems are a new method of making Class ___ foam. Compressed air foam is produced by injecting compressed air into a stream of water that has been mixed with ____ percent to ____ percent foam.
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A / 0.1 / 1.0
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A foam _____________ is the device that mixes the foam concentrate into the fire stream in the proper percentage.
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proportioner
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The two types of proportioners—__________ and ___________ —are available in a wide range of sizes and capacities.
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eductors / injectors
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Foam solution can also be produced by ___________ or _____________.
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batch mixing / premixing
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________ __________ is a technique where foam concentrate is poured directly into an apparatus booster tank to produce foam solution.
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Batch mixing
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__________ __________ is commonly used in 2½-gallon (9.5-liter) portable fire extinguishers.
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Premixed foam
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