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according to the NFPA standard 24, what is the minimum distance between the center of a fire hydrant hose outlet and the finished grade of the ground around the hydrant
18"
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if a portable tank is self expanding, Ff may need to hold on to the ________ while the tank is being filled
frame
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the quantity of water flowing through an opening during a hydrant test is called ______ pressure
flow
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when water is not moving, what kind of energy does it have?
potential
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the requred size of water main is based upon the amount of water needed for normal consumption and _______
fore protection needs
-
what is the term for the large discharge opening on a fire hydrant
steamer
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what is another term for head pressure
static pressure
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when color coding fire hydrants, what color would the bonnet be on a flowing less than 500 GPM
red
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when color coding fire hydrants, what color would the bonnet be on a flowing 1000-1499 GPM
green
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the amount of pressure remainig in a water distribution system when water is flowing is called ________ pressure
residual
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what is the name of the smallest pipes in a water distribution system (i.e., the pipes that deliver the water to the homes and hydrants on individual streets)
distributors
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what is a quick way to determine whether a dry-barrel hydrant is still draining, prior to replacing the discharge outlet cap?
place a hand against the opening and feel for suction
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sometimes the bonnet of a hydrant is color-coded. what do these colors indicate
the available flow from the the hydrant
-
what is the top end of the capacity range, in gallons, of typical portable water tanks
5000
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what is the term for an arrangement of water mains that delivers water to hydrants from more than one direction at the same time
grid
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what type of fire hydrants are designed to be used when the temperatures can be expected to fall below freezing
dry-barrel
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what is the term for the amount of pressure in a water distribution system during a period of normal consumption
normal operating pressure
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what size fire hose are the outlets on fire hydrants sized to fit
2 1/2"
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the pressure in a system when no water is flowing is called_________ pressure
static
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what is the recommended minimum pressure, in psi, for water coming from a fire hydrant
20
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Up to how many gallons per minute can a portable pump deliever?
500
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When would a dry barrel hydrant be required?
When the climate is subject to freezing
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In a well-designed water distributation system, what type of pattern do the water mains follow?
Grid
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From which of the following sources can fire fighters obtain water?
Municipal water system
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What is considered the realistic minimum useable residual pressure, in psi, when conducting firefighting operations from a water distributation system?
20
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Realistically, how many gallons per minute can a taker shuttle deliever?
Several Hundred
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The flow or quanity of water moving is measured in ________.
gallons per minute
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When color-coding fire hydrants, what color would the bonnet be on a hydrant flowing 500-999 gpm?
Orange
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What feature in hydrant caps should be checked during routine inspections?
Gaskets
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How close must a fire engine be able to get to a static water source in order to be able to ddraft directly from it?
20 feet.
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What are the pipes that deliever water from the treatment facility to the fire hydrants called?
Water mains
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How much water, in gallons, do fire department tankers usually carry?
1000 to 3500
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To what type of water source does a dry hydrant provide access?
Static water source
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Hydrants should be checked periodically. What is the minimum acceptable interval between such checks?
Annually
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What is installed on a tanker that allows it to offload 3000 gallons of water in 1 minute?
dump value
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When color coding fire hydrants, what color would the bonnet be on a hydrant flowing 1500 gpm and higher?
Light blue
-
What foam application method should be used on open top storage tank fires?
Bankshot (bank-down)
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What type of hose ranges in size from 2 and a half to 3 inches in diameter?
Medium
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What does a hose adaptor connect?
Two hose sections of equal diameter but differing threads
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What can be used to protect a hose line being hoisted over a roof or windowsill?
Horse roller
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What type of valves are opened or closed by rotating a handle a quarter turn?
butterfly
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What is the indicator notch on hose couplings that lines up with the threads are lined up toengaged properly?
The higbee notch
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What is the last steop in rolling a straight hose roll?
tapping out protrusions with the foot
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How does a doughnut hose roll differ from a straight hose roll?
both couplings are on the outside.
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what is one common use for a hose clamp?
to allow a hydrant to be charged before the driver/operator is ready to receive the water
-
What is a typical number of feet of supply hose for a fire engine to carry?
750-1250
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what NFPA standard governs inspection, care, and use of fire hose, couplings, and nozzles and service testing of fire hose?
1962
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During hose testing, what is the maximum length of the connected hose?
500 ft
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when referring to hose, what does the L stnad for in LDH?
Large
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What is it called when supply hose beds on apparatus contain two different sections, usually loaded with dissimilar hose?
A split hose bed
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If a defect is identified on a hose during an inspection, what is one of the steps to be taken?
mark the defect and recheck it during the next operation
-
What word describes teh volume of water that is beign moved through a pipe or hose?
flow
-
What term is used to describe the amount of energy in a body or stream of water?
pressure
-
when hose testing, for what length of time is the hose required to maintain the set pressure?
5 min
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What is the two-fire fighter stiff-arm method used for?
uncoupling hose
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in jacketed fire hose, what function does the outer jacket serve?
it adds strength to withstand water pressure
-
What is the hose called that is usually carried on a hose reel, is made of rubber, and flows only 40 to 50 gallons per min?
booster hose
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how should a hose line be advanced up a ladder?
uncharged
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what should be used to clearn hoses?
mild detergent
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what hose load has the hose up on its edge and laid side to side in teh hose bed?
accordion
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what function does the inner jacket of a jacketed fire hose serve?
it is the waterproof layer
-
what is it called when an engine secures hose to a hydranton the way in and lays supply line until it reaches its attack position?
a forward (straight) lay
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which type of nozzle is used to fight fires in inaccessible places such as attics and basements?
cellar nozzle
-
what locks the hose on the self-locking twin-doughnut hose roll?
loops of the hose itself
-
wha tdescritption best fits a hose jacket?
stiff canvas patch
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what type of hose line has a predetermined length of hose, with a nozzle already attached, and is connected to a discharge outlet on an engine
preconnect
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what is the short fold in a supply load called that is made so that a coupling does not have to tuen around when the hose is being laid out
dutchman
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which type of foam is synthetic based and has an excellent vapor suppression capabilities
Aqueous film forming foam
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during annual testing, at what pressure must an attack hose be tested
300
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a soft suction hose connects a fire hydrant engine to a:
steamer outlet on a hydrant
-
the three mose common hose loads for preconnected attack lines are the flat load, triple layer load, and __________ load
minuteman
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whathose appliance combines two lose lines into one
siamese
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friction loss is affected by three factors. what is one of those
hose diamater
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in a __________lay, the hose is laid out from the fire to the hydrant, rather than from the hydrant to the fire
reverse
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approximately how much does a 50' section of charged 2 1/2" hose weigh
200 lbs
-
when referring to a hosebed, what is the end called that is closer to the cab, or front of the fire engine
front
-
what is the term for a device that mixes the foam concentrate inthe fire stream in the proper percentage
foam proportioner
-
what is the difference between a gated wye and a water theif
addition of a 2 1/2" outlet
-
what is one thing the FF securing the hose to the hydrant on forward (straight) lay must remember to avoid
standing between the hose and the hydrant
-
what type of hose ranges in size from 1 to 2 inches in diameter?
smalll
-
what type of adaptor is used to connect two femail coupllings to each other
double male
-
class B foam is used for what type of fires
flammable liquids
-
what device splits one hose stream into two hose streams
Wye
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wher performing a flat hose load for a a forward lay, which end of the hose is first to be loaded
male
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what is the function of a hard sucttion hose
drafting water from a static source
-
what are the wrenched that are used to tighten and loosen hose couplings called
spanner wrenches
-
what type of hose couplings are the same and do not have male or female ends
storz
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what foam application method should be used on pooled liquid fires on the grounf
sweep (roll-on)
-
which group of nozzles flow the most gallons per minute
master stream hoses
-
which of the following is required to be annotated on a hose record
date hose was tested
-
what is a benefit of Class A foam
reduce surface tension of water
-
what term is used to describe the properties of energy, pressure, and water flow as related to fire suppression
hydraulics
-
what is the second stage of advancing an attack line
advancing the line into position where fire attack occurs
-
what type of hose ranges in isze from 3 1/2" to larger
large
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what is the hose diameter used by most FD for heavy interior attack
2 1/2"
-
what hose load has the hose up on its edge and placed around the perimeter if the hose bed in a U shape
a horseshoe load
-
which type of foam is formulated so polar solvents do not dissolve the foam
protein foam
-
what is used to connect individual sections of hose together to extend their length
coulings
-
whatr type of nozzle is moxt commonly used to apply aqueous film-forming foam and Class A foam?
aerator nozzle
-
what type of hose roll is used to store hose on a storage rack
straight
-
generally speaking, how many galloms oer minute does a 2 1/2" fire hose line flow
250
-
what is the funtion of a standpipe system
water supply for attack lines connected insede the building
-
what advantage does a fog-stream nozzle have over a smooth-bore nozzle
absorbs greater amount of heat
-
what feature of hose coulings is used to aid in the coupling and uncoupling of hose
seperates fuel from the fire
-
how does foam extinguish flammable liquid fires
seperates fuel from fire
-
which fog stream nozzle has a flow of between 90 and 225 GPM
automatic-adjusting
-
what advantage does a smooth-bore nozzle have over a fog stream nozzle
longer reach
-
what should FF do to avoid water hammer
open and close hydrants and nozzles slowly
-
which type of foam contains a surfactant additive that allows the foam to prodice a fast spreading film
fluoroprotein foam
-
when should the FF attaching hose to the hydrant charge the supply line
not until the driver/operators signal is received
-
what does a gated wye enable that a non-gated wye does not?
regulating the flow to either side of the wye independtaly of the other side
-
what type of appliance is used to attach a sammler hose to a larger one
an adaptor
-
which couplings goes on the inside of a straight hose roll
male
-
during annual trsting, at what pressure must a supple hose be tested
200
-
what tool is sometimes used to tighten hard suction hose connections
rubber mallet
-
what type of foam is made from animal byproducts
protein foam
-
on what floor should attack lines be connected when connecting to a standpipe system
floor below fire floor
-
at what nozzle pressure is a smooth-bore nozzle designed to operate
50 psi
-
on a reducer, which end is usually male
the small
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