Normans Fire Tactics Flashcards
Which of the following must take precedence when there is a shortage in personnel?
A. Staging
B. Fire extinguishment
C. Exposure protection
D. Rescue
D. Rescue
What is one of the most basic principles of fire fighting?
A. Firefighters responsibility is to educate the public about the job
B. Firefighters responsibility is to protect life and property
C. Firefighters responsibility is to risk his life at all times
D. Firefighters responsibility is to ensure code compliance
B. Firefighters responsibility is to protect life and property
What should be started when a fire unit arrives at the fire scene?
A. Extinguishment
B. Staging
C. Size up
D. Rescue
C. Size up
What must be allowed to dictate procedures at a fire?
A. guidelines
B. Circumstances
C. Training
D. Operations
B. Circumstances
How many directions can a fire spread, that the firefighter must be constantly aware of?
A. five
B. Four
C. Seven
D. Six
D. Six
What is normally the second action taken at the fire scene?
A. Extinguish the fire
B. Confine the fire
C. Locate the fire
D. Scene size up
B. Confine the fire
What should be done first when you do not have sufficient personnel to perform all of the tasks that need to be done?
A. tasks that extinguish the fire
B. tasks that protect the greatest amount of property
C. tasks that extinguish the fire in exposures
D. tasks that protect the greatest number of human lives
D. tasks that protect the greatest number of human lives
What should the scouting team be equipped with when initially performing recon?
A. hoselines
B. site map
C. portable radios
D. Portable extinguishers
C. portable radios
Which victims in general will need to be given the highest priority?
A. Those one or more floors below the fire
B. Those on the top floor of the building
C. Those in the immediate vicinity of the fire
D. Those directly above the fire
C. Those in the immediate vicinity of the fire
What is often the best way to reduce or eliminate the life hazard at a fire when sufficient personnel are present?
A. Remove all of the victims
B. Extinguish the fire
C. Vent the building
D. Confine the fire
B. Extinguish the fire
In which type of construction does the 20 minute rule apply?
A. Class 2
B. Class 1
C. Class 4
D. Class 5
D. Class 5
What is used to vent the products of combustion in a below grade fire?
A. Wall space
B. Stairway
C. Windows
D. Upper floor
B. Stairway
When does proper size up begin?
A. While enroute to the scene
B. Once the victims have been located
C. After the building has been searched
D. When the alarm is received
D. When the alarm is received
In what amount of time have most class 2 buildings with metal C joists or bar joists been proven to collapse when exposed to fire?
A. 20 minutes
B. 5 minutes
C. 15 minutes
D. 10 minutes
B. 5 minutes
What should the firefighter be alerted to the possibility of finding in a large, open occupancy?
A. Severe life hazard
B. Common cockloft
C. Numerous exposures
D. Truss construction
D. Truss construction
What can be used when construction trenches divide the apparatus from the building?
A. Passing line
B. Aerial apparatus
C. Ladder company
D. Quint truck
B. Aerial apparatus
What is the front of the fire building labeled under the NIMS system?
A. D
B. C
C. A
D. B
C. A
Where will exposure 4 be located when using a numerical identification system?
A. rear of the fire building
B. Right side of the fire building
C. Left side of the fire building
D. Front of the fire building
B. Right side of the fire building
Which of the following translates into a severe life hazard?
A. multiple exposure
B. Large fire in a building
C. Many people in a fire building
D. People who are unable to flee
D. People who are unable to flee
Which exposure should be selected to protect when possible?
A. Closest to the the hydrant
B. Most severely exposed
C. most important
D. easiest to protect
C. Most important
After what amount of time of fire exposure should a building of standard wood frame construction NOT be entered due to a collapse hazard?
A. 10 minutes
B. 20 minutes
C. 15 minutes
D. 5 minutes
B. 20 minutes
Which of the following describes the smoke’s presentation of a fire in the incipient stage?
A. rolling
B. Wispy
C. Dark in color
D. Heavy
B. Wispy
What should be done if auxiliary equipment is found inoperable at a fire scene?
A. Stage resources
B. Proceed without it
C. Call another alarm
D. Try to repair it
C. Call another alarm
Water flows in what amount for each 100 square feet (9 square meters) have been determined to be sufficient to control fires in areas of light fire loads of ordinary combustibles, provided the area has not been vented?
A. 25 GPM (95 L/min)
B. 10 GPM (38 L/min)
C. 100 GPM (379 L/min)
D. 50 GPM (189 L/min)
B. 10 GPM (38 L/min)
What type of fire should be suspected when you encounter a floor that is full of hot smoke but no visible fire?
A. Cellar
B. Structure
C. Void space
D. Cockloft
A. Cellar
What precent of all civilian fire deaths occur in residential buildings?
A. 90%
B. 70%
C. 80%
D. 60%
C. 80%
Which statement is correct?
A. Generally the lower the fire is in the building, the more serious the hazard
B. The physical location of the fire has no bearing on the tactics used
C. The only thing that gives firefighters a clue about what to expect is building height
D. Initial report information is inaccurate too often to rely upon it
A. Generally the lower the fire is in the building, the more serious the hazard
What is the major exception to the statement that newer buildings of metal construction add little or nothing to the fire load?
A. Interior contents fire
B. Façade fire
C. Structural member fire
D. metal deck roof fire
D. Metal deck roof fire
What fire resistance rating do the walls of a class 3 building have?
A. 3 hour
B. 2 hour
C. 4 hour
D. 1 hour
B. 2 hour
What can be looked at upon arrival to estimate the amount of time since flashover?
A. Number of responding units
B. Venting windows
C. Number of victims outside
D. Peeling paneling
B. Venting windows
What is the most important decision the IC will make?
A. To stage far from the building
B. To respond to a second alarm
C. To order additional resources
D. To pull troops from a building
D. To pull troops from a building
Which construction factor is probably the most important to firefighters?
A. The degree of compartmentalization of a building
B. The ability of a building to resist collapse when threated by fire
C. The number of hidden voids within which the fire can travel
D. The degree of which the building itself contributes to the fire load
B. The ability of a building to resist collapse when threatened by fire
Up to what flow rate can the modern 1 1/2 inch (3.8cm) nozzle deliver?
A. 125 GPM (473 L/min)
B. 150 GPM (568 L/min)
C. 100 GPM (379 L/min)
D. 175 GPM (662 L/min)
A. 125 GPM (473 L/min)
Whose primary function is normally water supply?
A. Engine company
B. Ladder company
C. truck company
D. Quint Company
A. Engine company
In Which construction type are the walls, partitions, columns, floors, and roofs noncombustible?
A. Class 5
B. Class 3
C. Class 7
D. Class 1
D. Class 1
What is a life hazard at every fire incident?
A. Occupants
B. Bystanders
C. Firefighters and occupants
D. Firefighters
D. Firefighters
How many sides are included in the fire scene examination?
A. four
B. Six
C. Eights
D. Two
B. Six
Where does the fire attack begin at a structure?
A. Rear
B. Front
C. Roof
D. Side
B. Front
At what point does the 20 minutes rule begin?
A. At arrival
B. At first ignition
C. At alarm
D. At flashover
D. At flashover
How often must the IC give status updates for the first hour of the incident in new york city?
A. Every 5 minutes
B. Every 10 minutes
C. every 20 minutes
D. Every 15 minutes
B. Every 10 minutes
What refers to the fuel contributed by the structural components?
A. Extension
B. Resistance
C. Noncombustible
D. Fireproofing
C. Noncombustible
What is the best way to deal with high life hazards?
A. Reduce it before the incident occurs
B. Document where the life hazards are located
C. Have evacuation drills in the occupancy
D. Enforce building codes strictly
A. reduce it before the incident occurs
What is the recommended flow rate per 100 square feet (9 square meters) in a commercial occupancy today?
A. 25 GPM (95 L/min)
B. 35 GPM (132 L/min)
C. 10 GPM (38 L/min)
D. 70 GPM (264 L/min)
B. 35 GPM (132 L/min)
What is the preferred way to ensure that a large loss will not occur due to water supply issues?
A. have drafting operations in place
B. have preconnected lines on site
C. Put mutual aid in motion at the first call
D. Ensure sprinklers are installed
D. Ensure sprinklers are installed
What is the first visible indication of a working fire but is not an accurate indicator of location?
A. Victims
B. Charring
C. Flames
D. Smoke
D. Smoke
Which type of buildings are the least stable in terms of collapse when exposed to fire?
A. Class 3
B. Class 5
C. Class 2
D. Class 4
C. Class 2
What is a key indicator of the likelihood of a structural collapse?
A. Age of the structure
B. Elapsed burn time
C. Location of fire
D. Total fuel load
B. Elapsed burn time
Where is the best place to get information about what is burning and if there are victims in the fire building?
A. Neighbors
B. Occupants
C. Bystanders
D. Dispatch
B. Occupants
Which of the following is NOT an advantage of using the indirect attack method?
A. It can be used in an occupied building
B. It can extinguish fire in areas remote from the application
C. It can reduce firefighters exposure to potential backdraft situations
D. It often uses less water for extinguishment
A. It can be used in an occupied building
What is often the best course of action when a potential BLEVE is a danger?
A. Offensive, exterior attack
B. Defensive, interior attack
C. Take no action
D. Offensive, interior attack
C. Take no action
What fog pattern is used when performing the indirect attack?
A. 60 degree
B. 45 degree
C. 15 degree
D. 30 degree
D. 30 degree
Which of the following is a characteristic used to determine the stage a fire is in?
A. Amount of time that has lapsed
B. Differences in room temperature
C. Content type and fuel load
D. Number of potential ventilation openings
B. Differences in room temperature
What saves more lives each year?
A. properly positioned and operated hose lines
B. properly times ventilation operations
C. Education about sheltering in place
D. Aggressive search operations
A. properly positioned and operated hose lines
What is the only thing needed to ignite the explosive mixture during the smoldering stage?
A. Ignition source
B. Chemical reaction
C. Fuel
D. Oxygen
D. Oxygen
How should you move when advancing the hose line to avoid burns during the free burning stage
A. on your belly
B. Duck walk
C. On your knees
D. Walk upright
B. Duck walk
Where should extra hose be flaked out when the fire is above the ground floor of a multi story building?
A. Down the hallway
B. Out the window
C. Down the stairway
D. Up the stairway
C. Down the stairway
Approximately how much does 1 length of charged 1 3/4 inch (4.4 cm) hose weigh?
A. 60 pounds (27 kg)
B. 80 pounds (36 kg)
C. 40 pounds (18 kg)
D. 100 pounds (45 kg)
B. 80 pounds (36 kg)
In general what is the highest priority during defensive operations?
A. Life safety
B. Exposure protection
C. Search and rescue
D. Property conservation
B. Exposure protection
After what amount of time if the fire is not under control, should the commander switch to a defensive mode of operations?
A. 30 minutes
B. 40 minutes
C. 20 minutes
D. 10 minutes
C. 20 minutes
What is the best way to protect an exposure?
A. Coat the fire building with water
B. Coat the exposed surface with water
C. create a water jet between the buildings
D. Create a water curtain between the buildings
B. Coat the exposed surface with water
Up to how many stories of frontage can a master stream cover from an elevated platform when operated in front of the building?
A. Six
B. Four
C. Three
D. Five
C. Three
What has lead to the ability to improve our ability to inside and put out a fire before it kills the remaining occupants?
A. hand lines
B. Large crews
C. Large master streams
D. Protective clothing
D. Protective clothing
During which stage will a hand extinguisher often be capable of halting further extention?
A. Smoldering
B. Incipient
C. Decaying
D. Free burning
B. Incipient
When should you open the hose line while advancing into a room with the fire in the free burning stage?
A. When the area is vented
B. When the smoke is thick
C. When you can see fire
D. When the temperature is high
C. When you can see fire
What should be started as soon as possible to make other operations more easily performed?
A. Overhaul
B. Suppression
C. Search
D. Rescue
B. Suppression
Where should the straight stream be directed when moving from one involved room to another?
A. floor
B. Contents
C. Ceiling
D. Wall
A. Floor
Which attack method should be used with a fire in the incipient stage?
A. Combination
B. Direct
C. Indirect
D. Defensive
B. Direct
What is the primary purpose of an engine company?
A. Absorb toxic fumes
B. Flush flammable liquids
C. Extinguish the fire
D. Protect Exposure
C. Extinguish the fire
What can result if the fog pattern is too wide when beginning the combination attack?
A. Oxygen deprivation
B. Gas layer cooling
C. Backdraft
D. Steam burns
D. Steam burns
What is the minimum number of firefighters required to drag 300 feet (91 m) or more of hose up stairways in large buildings?
A. Six
B. Five
C. Seven
D. Four
A. Six
After what amount of time of operating the hose stream into the broken store front window should the likelihood of a backdraft occurring (in the area) be over?
A. 20 seconds
B. 30 seconds
C. 40 seconds
D. 10 seconds
B. 30 seconds
What should be done when backdraft conditions are suspected in a store fire in a middle store of a strip mall?
A. Breach the store’s exterior wall
B. Break the store front window
C. Attack through the neighboring store
D. ventilate the roof
B. break the store front window
which of the following is NOT a key requirement for the use of a indirect attack method?
A. No occupants
B. limited ventilation
C. limited size of potential fire area
D. low heat
D. low heat
Approximately how long should the ceiling level attack be done during the free burning stage?
A. 5 to 10 seconds
B. 10 to 15 seconds
C. 20 to 25 seconds
D. 15 to 20 seconds
A. 5 to 10 seconds
What is the first tactic that should be attempted when you suspect that a backdraft explosion is possible?
A. Vent the highest portions of the affected area
B. Perform horizontal ventilation in the affected area
C. remove the fuel from the affected area
D. Use a fog spray pattern in the affected area
A. Vent the highest portions of the affected area
What should the water application used in the indirect attack be timed with for optimal effectiveness?
A. Topside ventilation
B. Forcible entry
C. Fuel load reduction
D. Horizontal ventilation
A. Topside ventilation
What will happen to any hidden fire when you have darkened down the fire using the combination attack?
A. It will smoke
B. Extinguish it
C. It will ignite
D. Nothing will happen
C. It will ignite
What is the main source of fuel in a well involved room fire?
A. Gaseous layer
B. Ceiling
C. Structural members
D. contents
D. Contents
What will be observed when the fog stream has cooled the area significantly in a third stage fire?
A. Amount of steam diminishes
B. Amount of steam increases
C. There is no sound from the area
D. There is a hissing sound from the area
A. Amount of steam diminishes
When should the decision change from offensive mode be made?
A. When a second alarm must be declared
B. When fire is entering nearby exposures
C. When firefighters are fatigued
D. When there are no more savable victims
D. When there are no more savable victims
What pattern is most often used when moving from one involved room to another?
A. Z
B. T
C. L
D. U
A. Z
What are the only two things that should prevent the hose line from being advanced in fires today?
A. Heat and smoke
B. Flame and smoke
C. Heat and flame
D. Flames and fumes
C. Heat and flame
What will dilute the effect of the steam generated using the indirect attack method?
A. Use of a fog pattern
B. Small fire area
C. Type of fuel load
D. Ventilation openings
D. ventilation openings
What floor should you survey to determine the layout of the fifth floor of a seven story building?
A. First
B. Third
C. Sixth
D. Fourth
D. Fourth
Where should you investigate when using a fog pattern and you notice a great deal of heat from behind you?
A. Behind the team
B. Above the team
C. Ahead of the team
D. A side room
A. Behind the team
What can be done when a strong wind is blowing in from the fire escape side?
A. Pull out and go defensive
B. Fight against the wind
C. Work with the wind at your back
D. Use a different entry location
C. work with the wind at your back
What can be used when estimating the amount of hose needed for a large one story building?
A. Divide the area of the building by two
B. Add the length and depth of the building
C. Multiply the width of the building by 5
D. Subtract the depth from the height of the building
B. Add the length and the depth of the building
What is the ideal geometric arrangement for the spread of fire?
A. Two angled surfaces
B. Two widely spaced vertical surfaces
C. Two perpendicular surfaces
D. Two closely facing vertical surfaces
D. Two closely facing vertical surfaces
What type of valve is usually found on the nozzle that regulates the amount of water flowing past the opening?
A. Ball
B. Pressure relief
C. Yoke
D. Hose gate
A. Ball
How many paces should be put between members when more then one person is carrying the hose?
A. One to two
B. Three to four
C. Two to three
D. Four to five
C. Two to three
How many lengths of hose should the nozzle operator arrive at the fire area with at a minimum?
A. Three
B. Four
C. Two
D. One
D. One
Where should the hose stream be directed when entering the cellar filled with high expansion foam for extinguishment?
A. Floor
B. Ceiling
C. Into the foam
D. Out the vent
B. Ceiling
How many extra lengths of hose should the nozzle team arrive at the fire area with to ensure there is enough hose for the building?
A. One to two
B. Two to three
C. Three or four
D. Four or five
A. One to two
What is a reasonable estimate of the number of lengths of hose needed when needing to stretch the hose line along the stairs?
A. Four
B. One
C. Two
D. Three
B. One
Up to what expansion ratio do air aspirating nozzles typically create?
A. 15:1
B. 5:1
C. 7:1
D. 10:1
D. 10:1
What reach does the baker pipe have?
A. About 25 feet (8m)
B. About 100 feet (30m)
C. about 75 feet (23m)
D. About 50 feet (15m)
D. About 50 feet (15m)
Within what distance can the muffled voices in the SCBA facepiece barely be heard within a foam blanket?
A. 2 or 3 feet (0.6m to 0.9m)
B. 4 or 5 feet (1.2m to 1.5m)
C. 5 or 6 feet (1.5m to 1.8m)
D. 3 or 4 feet (0.9m to 1.2m)
D. 3 or 4 feet (0.9m to 1.2m)
What can be done to the nozzle opening to make the stream blast through materials?
A. Make it larger
B. Make it smaller
C. Leave it unchanged
D. Make it fluctuate
B. Make it smaller
What is the maximum number of lengths of 1 1/2 inch (4cm) hose can be used as a preconnect if you want to flow 125 GPM (473 L/min)?
A. Seven
B. Five
C. Four
D. Six
C. Four
What is the key to stretching the correct hose line at the scene?
A. Briefly look at the situation
B. Pull out all available hose line
C. Utilize SOPs for hose selection
D. Always stretch the same hose
A. Briefly look at the situation
What can be used to prevent the airbag shock absorber from rupturing during a fire?
A. Piercing stream
B. Flooding applicator
C. Bent applicator
D. Straight stream
C. Bent applicator
As a rule of thumb, what should the maximum size opening a nozzle should have?
A. 1/3 the diameter of its supply
B. 1/8 the diameter of its supply
C. 1/4 the diameter of its supply
D. 1/2 the diameter of its supply
D. 1/2 the diameter of its supply
Where do members usually stage when the hose has been hoisted up the outside of the fire building?
A. One floor below the fire floor
B. On the opposite end of the fire floor
C. In the stairway of the fire floor
D. One floor above the fire floor
A. One floor below the fire floor
What must remain constant for the gallonage to remain the same with a constant gallonage nozzle?
A. Nozzle usage
B. Nozzle height
C. Nozzle pressure
D. Nozzle pattern
C. Nozzle pressure
What about the stream is affected by narrowing the area the water has to pass through in a nozzle?
A. Area
B. Reach
C. Pressure
D. Temperature
B. Reach
What is used to regulate the size of the discharge opening of the constant pressure nozzle?
A. Spring
B. Flap
C. Pulley
D. Ball
A. Spring
What type of nozzle should be used to limit the difficulty of changing to a more specialized nozzle type once the hose has been stretched?
A. Break apart design with male hose threads on the discharge side of the shutoff handle
B. Break apart design with female hose threads on the intake side of the shutoff handle
C. Break apart design with male hose threads on the intake side of the shutoff handle
D. break apart design with female hose threads on the discharge side of the shutoff handle
A. break apart design with the male hose threads on the discharge side of the shutoff handle
What purpose does the hose line serve in an outside fire of significant proportions?
A. Move the fire around
B. Cut the fire off
C. Push the fire back
D. Chase the fire down
B. Cut the fire off
What must be determined first when analyzing hose line choices that are available to your company?
A. Amount of crew
B. Nature of the district
C. Level of the training
D. Limit of the budget
B. Nature of the training
What is the recommended flow rate for most commercial occupancies?
A. 0.35 gpm/sq ft
B. 0.74 gpm/sq ft
C. 0.15 gpm/sq ft
D. 0.55 gpm/sq ft
A. 0.35 gpm/sq ft
At what concentration is the class B foam used with the commercial compressed air foam system?
A. 2-4%
B. 0.3-0.6%
C. 3-6%
D. 0.2-0.4%
C. 3-6%
At what number of bends in a hose line must a member be positioned to feed the hose to the advancing hose team?
A. One
B. Three
C. Four
D. Two
D. Two
What can the piercing applicator be forced through when putting out a fire in trunk?
A. Backseat
B. Taillight housing
C. Trunk lid
D. Under carriage
B. Taillight housing
What is the first consideration when deciding where to place a hose line?
A. Confine the fire
B. Protect valuable property
C. Extinguish the fire
D. Protect human life
D. Protect human life
Which of the considerations when placing a line into operation will probably have the greatest effect on the fire?
A. Length of the hose line moved
B. Operation pressure of the line
C. Size of the line
D. Ultimate destination of the line
D. Ultimate destination of the line
What must be done before water can be started for a cellar nozzle?
A. Close off any vent holes
B. Advance a hose line down the stairs
C. Cut a hole in the floor
D. Perform a pressure test
C. Cut a hole in the floor
Which member(s) must be in position of a pike pole or hook probe when operating in a cellar with high expansion foam?
A. rear
B. Back up
C. All
D. Lead
D. Lead
Which of the following is a factor into determining the length of hose needed?
A. Occupancy type
B. Setback of the building
C. Size of the fire
D. Area of the building
B. Setback of the building
What should be avoided when a hose line is needed on an upper floor and there is no fire escape?
A. Using the platform to remove victims
B. Using the platform as a standpipe
C. Using the platform to transport hose line
D. Using the platform to move crews
B. Using the platform as a standpipe
Where should the hose line priority location be most often in any multi level building?
A. Exterior fire escapes
B. Interior staircases
C. Interior hallways
D. Elevator shafts
B. Interior staircases
What happens to gasoline tank trucks when they are exposed to fire?
A. Melt from the top down
B. Rupture at the front
C. Burn a hole in the side
D. Explode violently
A. Melt from the top down
Where is the air added when using a commercial compressed air foam system?
A. At the pump
B. Along the line
C. After expulsion
D. At the nozzle
A. At the pump
Which of the following is NOT a characteristic of the residence that plays an important role when selecting hose lines?
A. The need for speed
B. Relatively low fire loading
C. Increased use of plastics
D. Presence of dividing walls
C. Increased use of plastics
What amount is the fire load increased when the same building contains large amounts of plastics as opposed to ordinary combustibles?
A. Double
B. Quadrupled
C. Triple
D. It remains the same
A. Double
Which statement is correct?
A. Residual pressure will give you an indication of the amount of pressure in a line
B. Flow testing is not needed if an adequate static pressure is present
C. If water is flowing the pressure is adequate
D. Static pressure is no indicator of the volume of water available from the hydrant
D. Static pressure is no indicator of the volume of water available from the hydrant
Which statement about water is NOT correct?
A. The pressure in a confined body of water at rest is the same at all points
B. The pressure a fluid exerts is proportional to the density of that fluid
C. The pressure of a fluid in an open container is proportional to its depth
D. Fluid pressure is parallel to the surface on which it acts
D. Fluid pressure is parallel to the surface on which it acts
Which of the following is often the better solution when the desired flow cannot be accomplished?
A. Change the location of the hydrant used
B. Change the number of pumpers used
C. Change the size of hoses used
D. Change the opening pressure used
C. Change the number of pumpers used
What is concerned primarily with ensuring that the proper volume of water is available at the required location on the fireground?
A. Hydraulics
B. Fuel load
C. Water supply
D. Fire physics
C. Water supply
What can be added to increase the flow to an inline pumping engine?
A. Extra hose line
B. Second pumper
C. Relief valve
D. Gated wye
B. Second pumper
What happens to the friction loss when the hose lay is tripled?
A. Quadruples it
B. Doubles it
C. Triples it
D. Nothing happens
C. Triples it
What pressure is most likely being referred to when the statement is made that there are no supply problems in an area because there is 110 psi (758 kPa) at all of the hydrants?
A. Backflow
B. Static
C. Elevated
D. Head
B. Static
At what flow would a 6 inch supply line be a better choice?
A. 1,250 GPM (4,731 L/min)
B. 1,750 GPM (6,624 L/min)
C. 1,500 GPM (5,678 L/min)
D. 1,000 GPM (3,785 L/min)
B. 1,750 GPM (6,624 L/min)
What size supply hose is best used with a 1,250 - 1,500 GPM (4,731 L/min - 5,678 L/min) pumper?
A. 4 inch (10 cm)
B. 6 inch (15 cm)
C. 3 inch (8 cm)
D. 5 inch (13 cm)
D. 5 inch (13 cm)
What is considered to be the minimum acceptable residual pressure, except when drafting?
A. 25 psi (172 kPa)
B. 15 psi (103 kPa)
C. 20 psi (138 kPa)
D. 10 psi (69 kPa)
D. 10 psi (69 kPa)
How should the LDH be used to take advantage of its low friction loss and work around its relatively low maximum discharge pressure?
A. Inline supply
B. Positive pump
C. Reverse lay
D. Drop lay
A. Inline supply
How many 5 inch (13 cm) supply lines would be needed to equal the performance of one 6 inch (15 cm) supply line?
A. Two
B. Three
C. Four
D. Five
A. Two
What maximum discharge pressure does NFPA recommend for LDH?
A. 100 psi (689 kPa)
B. 200 psi (1,379 kPa)
C. 250 psi (1,724 kPa)
D. 150 psi (1,034 kPa)
B. 200 psi (1,379 kPa)
What does LDH deliver?
A. Pressure
B. Volume
C. Pressure and reach
D. Reach
B. Volume
Which is the most versatile, most highly maneuverable master stream on the fireground today? A. Tower ladder B. Ladder tower C. Ladder pipe D. Pipe ladder
A. Tower ladder
With which size supply lines are low intake pressures most commonly encountered when inline pumping?
A. 1 inch (3 cm)
B. 2 1/2 inch (6 cm)
C. 2 inch (5 cm)
D. 1 1/2 inch (4 cm)
B. 2 1/2 inch (6 cm)
What percent of the one line loss is experienced when the flow is split among three lines?
A. 10-15%
B. 35-45%
C. 15-20%
D. 25-35%
A. 10-15%
What is the amount of pressure that is exerted on the surface of water in a container for every foot of height that the water rises?
A. Density pressure
B. Draft pressure
C. Static pressure
D. Head pressure
D. head pressure
What is the most common resistance to flow?
A. Hose kinks
B. Friction loss
C. Head pressure
D. Backflow
B. Friction loss
About how much does 1 cubic foot of water weigh?
A. 27.9 lb (13 kg)
B. 62.5 lb (28 kg)
C. 87.9 lb (40 kg)
D. 95.5 lb (43 kg)
B. 62.5 lb (28kg)
Where should the pumper often be located when low flowing pressure is encountered?
A. Near the nozzle
B. Near the fire building
C. Near the hydrant
D. Between the hydrant and the fire building
C. Near the hydrant
Which pressure is being represented when the higher the nozzle pressure, the higher the flow, as long as the tip size remains constant?
A. Engine
B. Nozzle
C. Pump
D. Gate
B. Nozzle
What is normally sufficient for preconnected lines during routine operations?
A. Pressure gauge
B. Nothing is needed
C. Flow meter
D. Pressure gauge and flow meter
A. Pressure gauge
What pushes the water up through the suction hoses to the intake of the pump when drafting from an open topped source?
A. Air above us
B. increased tide
C. Current in the water
D. Pumper on the ground
A. Air above us