06 - IFSTA Chapter 06 Flashcards
The fire service operates 3 types of nozzles to produce what 3 basic types of fire streams?
Solid, fog, broken stream
What is the formula for the costumary discharge rate?
29.7xD^2xDNP
The costumary formula to determine nozzle reaction for solid stream nozzles is?
1.57xD?xNP
What nozzle flows a specific volume of water on all stream patterns at a specific discharge pressure?
Constant flow fog nozzle
Which stream is produced with a fixed orifice and a smooth bore nozzle?
Solid stream
What type of nozzle enables a firefighter to select a flow rate to operate ?
Manually/Selectable gallonage nozzle
Which stream nozzle requires the driver/operator to determine the amount of water discharged?
Solid stream nozzle
What is the counter force that pushes back against firefighters operating a hoseline called?
Nozzle reaction
The principle of operation of this nozzle is based on rotating the exterior of the barrel to change pattern settings:
Constant flow fog nozzle
Which nozzle is design to maintain its constant operating pressure even if the pump discharge pressure increases ?
Automatic fog nozzle
What type of nozzle may produce solid or fog streams and generate considerable nozzle reaction due to their higher flow rate?
Master stream nozzles
What nozzle offers firefighters the ability to operate at a greater distance from the fire taking advantage of the longer reach?
Master stream nozzles
What are the three basic types of master stream appliances?
Fixed, Portable, and Combination
Which master stream appliance is commonly called “deck gun”?
Fixed monitor
What appliance may be pre-plumbed and permanently attached to an aerial device?
Elevated master stream
Which nozzle is referred to as distributor nozzle?
Cellar nozzle
Which nozzles are not equipped with shut offs?
Cellar nozzle
What nozzle is commonly used in aircraft firefighting and car fires?
Piercing nozzle
Which nozzle consist of a single piece of brass or steel with many impinging holes?
Chimney nozzle
What abbreviation equals the total flow of water in GPM flowing through the nozzle?
Q
Which NFPA Standard deals with Fire Apparatus Driver/Operator Professional Qualifications?
NFPA 1002
What three basic fire streams does the fire service use?
Solid, Fog, Broken Stream
What is the maximum nozzle pressure a solid stream nozzle on a handline should be operated at?
50 psi
What is the maximum operating nozzle pressure for a master stream appliance using a solid stream nozzle?
80 psi
What is the formula for Discharge Rate from a solid stream nozzle?
GPM = 29.7 x d2 x DNP
Most constant flow nozzles are designed to operate at what nozzle pressure?
100 psi
Most selectable gallonage nozzles are designed to flow the indicated gallonage at what psi?
100 psi
What is considered the maximum flow for a handline?
350 gpm
Master stream nozzles are capable of flowing in excess of how many gpm’s?
350 gpm
What pressure are smooth bore master streams generally operated at?
80 psi
Master stream fog nozzles are generally operated at what pressure
100 psi
High pressure fog nozzles are best suited for what type of firefighting?
Wildland Firefighting
A piercing nozzle uses an impinging jet nozzle capable of flowing what gpm at 100 psi?
125 gpm
At 100 psi, what gpm range are chimney nozzles capable of flowing?
1.5 - 3
What is the formula for calculating nozzle reaction for solid steam nozzles?
NR = 1.57 x d2 x NP
On the fire ground what formula can be used to achieve the approximate solid stream nozzle reaction?
NR = Q/3
What is the formula for calculating nozzle reaction for fog stream nozzles?
NR = 0.0505 x Q x DNP
On the fire ground what formula can be used to achieve the approximate nozzle reaction for a fog stream nozzle?
NR = Q/2
What type of monitor is permanently mounted on the apparatus?
Fixed monitors
Of the following where are master stream appliances NOT generally operated
Water curtains
Which of the following is not one of the three basic fire streams as defined by IFSTA?
piercing
What are the two factors that determine the reach and flow of a solid stream?
nozzle pressure and discharge orifice
What is considered a “narrow fog” nozzle pattern according to IFSTA?
15 to 45 degrees
Which of the following is not a master stream appliance as defined by IFSTA?
ground monitor
What is the best method to increase safety and effectiveness of a cellar nozzle?
insert an inline shutoff valve
Determine the nozzle reaction from a hoseline equipped with a 13/4 inch tip operating a nozzle at 50PSI.
122.66 lb.
Determine the nozzle reaction of a hoseline with a fog nozzle flowing 200 gpm and 100 psi.
101 lb.
which nozzle type allows the firefighter operating the hoseline to select the flow rate?
selectable gallonage nozzle
Which of the following operations would a high pressure fog nozzle best be suited for?
wildland operations
Which of the following nozzles flows a specific volume of water on all patterns at a specific nozzle discharge pressure?
constant flow nozzles
What kind of nozzle is commonly used for aircraft firefighting?
piercing nozzle
MOST fog nozzles are designed to be operated at:
at or below 100 psi
Solid stream handlines should generally be operated at a maximum of:
50 psi
What kind of master stream appliance is stored on the apparatus for deployment to the location where they will be used?
portable monitors
Why are handlines generally capped at 350 gpms?
greater flows will produce dangerous amounts of nozzle reaction
What is the equation for determining water flow from a solid stream nozzle?
29.7x D2 x DNP
What determines the forward velocity, pattern and shape of a fog nozzle?
angle of deflection
Automatic nozzles are categorized as what kind of nozzle?
variable flow nozzle
What kind of nozzle produces a stream with a high pressure but low volume of water?
high pressure fog nozzles
what is the proper calculation used to calculate the nozzle reaction for fog streams?
0.0505X Q XDNP
Which of the following affects the condition of the stream as it leaves the nozzle?
Operating pressure
Until it reaches its destination, what four factors influence the fire stream?
Velocity, gravity, wind, and friction with the air
In order to achieve maximum efficiency during incident operations, drivers must ensure what is/are applied to each fire stream?
Optimum flow rate and discharge pressure
Which of the following is NOT one of the three basic fire streams?
Master Stream
Handline smoothbore nozzles should be operated at a maximum discharge pressure of what?
50PSI
Masterstream smoothbore nozzles should operate at a maximum discharge pressure of what?
80PSI
What is the formula for determining the flow rate of a smoothbore nozzle?
GPM = 29.7 ? D? ? DNP
When flowing water through a fog nozzle, upon encountering an obstruction, what will determine the forward velocity of the stream of water, as well as its pattern or shape?
The angle of deflection
A water stream of finely divided particles used for fire control is known as what?
Fog stream
The reach of a fog stream is directly related to what?
Its width
A nozzle that is designed to flow a specific volume of water on all stream patterns at a specific pressure is known as what?
Constant flow nozzle
Most constant flow nozzles are designed to operate at what pressure?
100 PSI, but some at 50 PSI
What is the maximum flow for a handline?
350 GPM
Smoothbore master streams are generally operated at what nozzle pressure?
80 PSI
Fog stream master streams are generally operated at what nozzle pressure?
100 PSI
The purpose of changing the direction of water through a master stream device serves what purpose?
Reduces nozzle reaction
What is not considered to be one of the three types of master streams?
Handheld
What is the rated flow of a piercing nozzle at its appropriate PSI?
125 GPM at 100 PSI
The counterforce directed against a person or device holding a nozzle by the velocity of the water being discharged is known as what?
Nozzle reaction
What is the correct formula used to determine nozzle reaction?
NR = 1.57 ? D? ? NP
Solid stream nozzles on handines should generally be operated at what PSI?
50 PSI
Solid stream nozzles on master streams should generally be operated at what PSI?
80 PSI
What is the formula to determine water flow from a solid stream nozzle?
29.7xd^2xDNP
What is the “constant” in the formula to determine flow from a solid stream nozzle?
29.7
What stream is described as finely divided particles used for fire control?
Fog stream
Which nozzle is designed to flow a specific volume of water on all stream patters at a specific nozzle discharge pressure?
Constant flow fog nozzle
What range of fog nozzle patterns is considered a narrow fog?
15-45 degrees
What range of fog nozzle patters is considered a wide fog?
45-80 degrees
Which nozzle allows the firefighter operating the handline to select the flow rate to suit fire and operating conditions?
Selectable gallonage nozzle
What type of nozzle is a type of variable flow nozzle with the ability to change patters while maintaining the same nozzle pressure?
Automatic fog nozzle
What is generally the maximum flow for a handline?
350 gpm
Master stream fog appliances are generally operated at what PSI?
100 PSI
Which master stream appliance may be used in a mount on the apparatus or removed and used remotely from the vehicle?
Combination monitor
Which type of nozzle is designed to be lowered through holes and are sometimes referred to as distributors?
Cellar nozzles
Which nozzle is gererally designed as a 3-6 foot hollow sleel rod 1 1/2 inches in diameter?
Piercing nozzle
What is the counterforce directed against a person holding a nozzle by the velocity of water being discharged?
Nozzle reaction
What is the formula to determine nozzle reaction from a solid stream nozzle?
1.57xd^2xNP
What is the “constant” in the formula for nozzle reaction for solid stream nozzles?
1.57
What is the formula to determine nozzle reaction from a fog stream nozzle?
.0505xQxDNP
What is the “constant” in the formula for nozzle reaction from a fog stream nozzle?
0.0505
Which type of nozzle produces a tight stream with little spray or shower effect?
solid stream nozzle
The flow and reach of a solid steam nozzle is determined by the size of the discharge orifice and the?
nozzle pressure
Solid stream nozzles on handlines should generally be operated at a maximum of?
50 psi nozzle pressure
What maximum pressure should solid stream master stream appliances be operated?
80 psi nozzle pressure
When determining the flow of a solid stream nozzle, which of the following is the constant number used to determine max GPM?
29.7
Which type of fog stream breaks water into fine, evenly divided particles by driving several jets of water together at an angle?
impinging stream
Impinging stream nozzles MOST often provide?
wide angle fog pattern
The reach of a fog stream is directly related to?
the wind
The type of nozzle that is designed to flow a specific volume of water on all stream patterns at a specific nozzle discharge pressure is called?
constant flow fog nozzle
The type of nozzle that allows firefighters operating the handline to select the flow rate to suit fire and operating conditions is called?
selectable gallonage
When properly supplied, a selectable gallonage nozzle will discharge a pre-determined flow along with what other type?
constant flow fog nozzle
A type of variable flow nozzle with the ability to change patterns while maintaining the same nozzle pressure is called?
automatic fog nozzle
If the gallonage supplied to an automatic fog nozzles-changes, the automatic nozzle?
adjust to maintain virtually the same pressure
Which type of nozzle produces a stream with significant forward velocity and relatively low volume of eater delivery?
high pressure nozzle
An incident that is MOST likely to use a master streams is an incident where?
personnel are limited
Special purpose nozzles that be referred to as distributors are called?
cellar nozzles
Special purpose nozzles that are often lowered through holes or other openings to the cellar of an occupancy are called?
cellar nozzles
Special purpose nozzles that are commonly used in aircraft firefighting, car fires or apply water to attics are?
piercing nozzles
Which of the following is the formula for calculating nozzle reaction for solid stream nozzles?
1.57 x d^2 x NP
Which of the following is the formula for calculating nozzle reaction for fog stream nozzles?
0.0505 x Q x DNP
what is 3 types of nozzles does the fire service operate?
solid, fog and broken
what stream is produced by a smooth bore nozzle?
solid fire stream
what fire stream has little spray or shower effect?
solid fire stream
what nozzle pressure does a solid stream nozzles flow at?
50 psi
when determining flow of a solid stream nozzle, what is used as a constant in the formula
29.7
what must a driver/operators know to determine the flow of a solid stream nozzle?
nozzle pressure and tip diameter
what are 3 types of fog nozzle patterns?
straight, narrow fog and wide fog
what is described as a water stream of finely divided particles used for fire control?
fog stream
what is relative to the barrel that will determine the shape of a fog stream?
the stem
which nozzle is designed to flow a specific volume of water on all stream patterns at a specific nozzle discharge pressure
constant flow fog nozzle
what nozzle has a design for adjustable gallonage settings?
selectable gallonage nozzle
with a constant flow nozzle, who sets the specifications for gallonage to be flowed at?
manufacturer of the nozzle
what nozzle can change patterns while maintaining the same nozzle pressure?
automatic fog nozzle
what nozzle produces a steam with significant forward velocity but a relatively low volume of water delivery?
high pressure fog nozzle
what nozzle is best suited for wild land fires?
high pressure fog nozzle
what is a hose line considered if at or below 350 gpm?
handline
what is a hose line considered if at or above 350 gpm?
master stream
what is the nozzle pressure of a smoothboremaster stream?
80psi
where else can a cellar nozzle be used at?
attics
which nozzle consist of a solid piece of brass or steel with many small impinging holes producing a very fine mist?
chimney nozzle
Three basic fire streams used in the fire service
Solid, Fog and Broken
Solid stream nozzles on handlines should generally be operated at a maximum of
50 psi
master stream appliances should be operated at a maximum
80 psi
A solid fire stream is produced with a
fixed orifice and a smooth bore nozzle
Solid stream nozzle discharge rate (Customary)
GPM = 29.7 x d2 x D NP
Solid stream nozzle discharge rate (Metric)
L/min = 0.067 x d2 x D NP
designed to flow a specific volume of water on all stream patterns at a specific nozzle discharge pressure
constant flow nozzle
Most constant flow nozzles are designed to operate at a nozzle pressure of
100 psi
These nozzles allow the firefighter operating the handline to select the flow rate to suit fire and operating conditions
selectable gallonage nozzles
Many selectable gallonage nozzles are designed to flow the gallonage indicated at
100 psi
a type of variable flow nozzle with the ability to change patterns while maintaining the same nozzle pressure
automatic nozzles
Most automatic fog nozzles are designed to operate at
100 psi
Driver/operators must ensure that adequate discharge pressure is supplied to all hoselines, especially those equipped with
automatic nozzles
What type of nozzle operates at a pressure of up to 800 psi
high pressure fog
High ressure fog nozzles are not recommended for structural firefighting because of low water flow of only
8-15 gpm
Max flow for a handline
350 gpm
Master stream nozzles are capable of water flow in excess of
350 gpm
Smooth bore master stream appliances are generally operated at
80 psi
Fog master stream appliances are generally operated at
100 psi
Commonly called deck guns and permanently mounted on the apparatus
fixed monitors
Until it reaches its destination, the fire stream is influenced by what 4 things?
Velocity, gravity, wind and friction with the air
The fire service operates 3 types of nozzles to produce 3 basic streams. What are they?
Solid, fog, broken stream
Hose streams that stays together as a solid mass is called?
Solid fire stream
Solid stream nozzles on hand lines should generally be operated at a maximum PSI of what?
50
Master streams appliances should be operated at a maximum of what PSI?
80
What is the formula for discharge rate of a solid nozzle stream?
GPM=29.7XD?XDNP
What nozzle breaks water into fine, evenly divided particles by driving jets of water together at an angle?
Impinging stream
This nozzle is designed to flow a specific volume of water on all stream patters at a specific nozzle pressure?
Constant flow
This nozzle allows firefighters operating the handline to select the flow rate to suite fire and operating conditions?
Selectable gallonage
This nozzle is a variable flow nozzle with the ability to change patterns while maintaining the same nozzle pressure?
Automatic
This nozzle is recommended for wildland fires NOT structure fires due to its high pressure but GPM.
High pressure fog
What is the general maximum flow for a hand line ?
350 GPM
What is generally the GPM of a master stream ?
350 and up
What PSI range is generally accepted for master streams?
80-100
A deck gun is what type of monitor?
Fixed
This monitor can be used attached to the apparatus or removed.
Combination
This monitor is stored in a compartment for deployment ?
Portable
This nozzle has an angled, case hardened steel tip that can be driven through walls?
Piercing
This nozzle has a GPM of 1.5-3 and a PSI of a 100?
Chimney
What of Newtons Laws of Motion is represented by nozzle reaction?
3rd
What affects the condition of the fire stream as it leaves the nozzle?
Operating pressure, nozzle design and adjustment, and condition of the nozzle orifice
When does water form a fire stream?
Upon leaving the nozzle orifice
Which of these is not a factor that can influence a fire stream?
Temperature
Which of these is not one of the three basic fire streams the fire service operates?
Piercing nozzle
What is produced with a fixed orifice and a smooth bore nozzle?
Solid fire stream
What is the general operating pressure for solid stream nozzles?
50 PSI
In the (customary) - discharge rate formula, what is the number used for the constant?
29.7
What fog pattern will a wide deflection produce?
Wide
What range of angles produce a narrow fog pattern?
15 degrees - 45 degrees
What water stream is made up of finely divided particles used for fire control?
Fog stream
Which of these is not directly related to the reach of fog streams?
Temperature
What nozzle pressure are most constant flow nozzles designed to operate?
100 PSI
What type of nozzles have the ability to change patterns while maintaining the same nozzle pressure?
Automatic nozzles
What nozzles are best suited for wildland fires and are not recommended for structural fire fighting due to their low water flow?
High pressure fog nozzles
Master streams are capable of flowing water in excess of how many gallons?
350 GPM
What reduces nozzle reaction in a master stream appliance?
Changing the direction of water through the device
What type of nozzle is sometimes referred to as a distributor?
Cellar nozzle
What type of nozzle is also referred to as a penetrating nozzle?
Piercing nozzle
What type of nozzle is attached to a booster hose and only flows 1.5 to 3 GPM?
Chimney nozzle
Which of Newton’s laws of motion does nozzle reaction illustrate?
Newton’s Third Law of Motion
What is a solid fire stream?
A hose stream that stays together as a solid mass
Solid stream nozzles on handlines should generally be operated at a maximum of how many psi? Master streams?
Handlines at 50 psi, Master Streams at 80
What formula would a DPO use to determine water flow from a solid stream nozzle whne the nozzle pressure and tip diameter is known?
GPM = 29.7 x d^2 x sqrt NP
What is the degree range for a wide fog?
45-80 degrees
The relative positions of the deflection stem and the exterior barrel of a periphery-deflected nozzle determine what?
The stream pattern
Which of the following is not a type of handline nozzle?
Straight stream
Generally, what is the maximum flow for a handline?
350 gpm
Master stream nozzles are capable of water flow in excess of how many GPM?
350 gpm
Which of the following is not a reason that master stream appliances would be used?
Limited water source
Which of the following is not a basic type of master stream appliance?
Automatic monitor
This type of monitor is commonly known as a deck gun.
Fixed monitor
What type of nozzle is a 3-6 foot hollow steel rod with a hardened steel tip capable of being driven through a variety of material?
Piercing nozzle
What type of nozzle are most often lowered through holes or other openings, like basements, attics, or other void spaces?
Cellar nozzle
What type of nozzle is a solid piece of brass with many small impinging holes and only flows 1.5-3 gpm?
Chimney nozzle
Most fog nozzles are designed to operate at or below how many psi?
100 psi
What formula is used to calculate nozzle reaction for a solid stream?
NR = 1.57 x d^2 x NP
What formula can a DPO use to approximate solid stream nozzle reaction on the fire ground?
NR = Q/3
What formula is used to calculate nozzle reaction for a fog stream?
NR = 0.0505 x Q x sqrtNP
What formula can a DPO use to approximate fog stream nozzle reaction on the fire ground?
NR = Q/2
When calculating nozzle reaction, what unit of measurement is the final answer in?
Pounds
What are the three basic types of fire streams created by nozzles used in the fire service?
solid, fog and broken streams
What is the nozzle pressure for a solid stream master stream appliance?
80 psi
What type of fog stream breaks water into fine, evenly divided particles by driving several jets of water together at an angle?
impinging stream
What is the nozzle pressure for a solid stream hand line?
50 psi
Periphery-deflected streams are produced by deflecting water around:
an inside circular stem in the nozzle
Elevated master streams that have pre piped waterways generally feature a master stream that can be remotely controlled from the apparatus tuntable and is generally able to:
move both up and down and side to side
Impinging stream nozzles often provide a:
wide angle fog patterns
The flow and reach of a solid stream nozzle is determined by the size of the discharge orifice and the:
nozzle pressure
What is the maximum flow of a handline?
350 GPM
Which of the following is a type of variable flow nozzle with the ability to change patterns while maintaining the same nozzle pressure?
automatic fog nozzle
Which of the following nozzles is designed to produce a stream with significant forward velocity and relatively low volume of water?
high-pressure fog nozzles
Which of the following would a high pressure fog nozzle be best suited for?
wildland fires
Most fog nozzles that are used as a hand lines are designed to be operated at: (IFSTA not FAXco)
at or below 100 psi
Distributor nozzles are also referred to as:
cellar nozzles
The reach of a fog nozzle stream is directly related to:
the wind
Which of the following nozzles produce a tight stream with little spray or shower effect?
solid stream nozzles
Which style of master stream appliance has flow limitations when removed from the apparatus and place on the ground?
combination nozzles
A “narrow-fog” pattern is considered to be:
15 to 45 degrees
a “wide-fog” pattern is considered to be:
45 to 80 degrees
Which of the following is considered to be a “fixed monitor”
deck gun
