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64 Cards in this Set
- Front
- Back
direct attack pattern
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usually a straight stream
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indirect attack pattern
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usually a fog pattern to develop steam
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advancing in to a structure fire
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check utilities
bleed air out of hose line check nozzle pattern ff same side of hose |
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advancing in to a structure fire
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check utilities
bleed air out of hose line check nozzle pattern ff same side of hose 3-4 ft spacing stay low wide pattern - indirect narrow pattern - direct rotate nozzle clockwise |
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rotate nozzle which direction?
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clockwise
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advancing a dry hose line up a ladder
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foot ladder
fire nozzle on back above waist hose on same side of ff lock into ladder tie hose off to rung of ladder |
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how many ff on a ladder
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one ff per fly/section of ladder
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advancing a charged hose line up a ladder
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foot ladder
tie off bail of nozzle use hose strap on nozzle ff same side of hose ff spacing on ladder ( one ff per section) lock into ladder tie nozzle off of rung of ladder |
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when climbing a ladder where should the hose be laid out prior to climbing
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directly straight out from ladder
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easier to move a hose dry or charged
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dry
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hoisting a dry hose line up the outside of a building
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fold nozzle back over hose
use clove hitch and half hitch on nozzle nozzle will point down pike pole can be used to advance hose up the side of a building |
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before going into window with dry hose what do you do
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put hose in window then get in window then second ff brings up 50 ft of hose along the side of the ladder.
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before going into window with dry hose what do you do
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put hose in window then get in window then second ff brings up 50 ft of hose along the side of the ladder. pull 50ft in window then second ff gets in window
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advancing a charged hose line up a fire escape
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use a rope
tie off bail pull hose up outside of fire escape tie hose off to railing below coupling |
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tie off ___ , anytime you hoist a charged hose line
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bail
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clove hitch and two half hitches are for a ___ hose line
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dry
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advancing a hose line up a stairway dry
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according shoulder carry 50 Ft hose
hose on same side of ff lay hose to outside of stairway less kinks |
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hose load for advancing dry hose up stairway
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accordion shoulder carry or under your arm carry
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hook up to a standpipe
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use your hose not the supplied hose
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hook up to a standpipe where
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one floor below the fire floor
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hooking up to a standpipe
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advance hos dry
hook up one floor below fire stage men and equipment 2 floors below fire set up safety zone flake extra hose up the stairs use your own hose |
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a break apart nozzle you can
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shut off water with bail, remove nozzle, attach another section of hose, attach nozzle to end of new section, open bail and then control with nozzle at end.
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ff needed to operate charged hose line
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1" 1 ff S
1.5" - 1.75" 2 FF M 2.5" - 3" 3 FF L a hose loop can be used to advance a charged hose line a break apart nozzle can be used to extend a hose line try to move dry hose not charged |
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a hose loop is used to
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advance charged hose line
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advancing a hose up a stairwell
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advance before its charged
accordion shoulder carry is appropriate carry |
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tall building hooking up to standpipe
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one floor below
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standpipe connection extra hose
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flake hose up the stairs
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advancing dry line up a ladder spacing
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one ff per section or fly
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operating nozzle from ground ladder
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secure hose and nozzle to rung of ladder
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staging in tall building is on what floor
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two floors below fire floor
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safety zone size depends on
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conditions
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fire stream from a ground ladder
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hose same side of ff and ff lock in
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advancing hose up ladder
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best done dry
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carrying dry hose up ladder, put nozzle over your shoulder to prevent
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in case it is charged it won't knock you off
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flake hose where on a stair
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outside
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passing hose line up a fire escape requires a ff on each landing
True False |
true
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remove kinks from hose before entry
true false |
true
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chock doors while advancing hose
t/f |
True
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position hose to what when operating hose from ladder
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through the rung
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hoisting hose charged
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tie off bail
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person footing ladder cannot do what
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help get hose up ladder
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always a good idea to have pre set up hose packs for high rise buildings True / False
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True
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Hose line can become loose if
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loose nozzle
unattended nozzle |
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fire stream
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a stream of water or other extinguishing agent after it leaves a fire hose and nozzle until it reaches the desired point
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fire streams used to
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reduce heat from a fire
protect the ff protect exposures |
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always be doing
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size up
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fire stream considerations
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properly developed and aimed
poor steams allow fire to burn proper stream has volume, pressure, direction pump water hose nozzle |
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fire streams need
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pump
water hose nozzle |
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low volume stream discharges
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<40 GPM
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handline streams discharge
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40 -350 GPM
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master streams discharge
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> 350 GPM
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factors in nozzle selection
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nozzle pressure
nozzle flow nozzle reach nozzle reaction stream shape |
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stream patterns
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solid
broken fog |
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Solid stream
handling tips in size |
3/4" to 1.25" at 50 PSI
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best distance reach is at what angle?
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32degrees
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smooth cylindrical bore length is
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one to one and one half times its diameter
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velocity
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rate of motion of a particle in a given direction
SPEED |
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Friction loss
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pressure lost while forcing water through pipe fittings fire hose and adapters
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critical velocity
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turbulence caused when a stream is subjected to excessive velocity
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friction loss for 1.5" is
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30 PSI per 100 ft
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friction loss for 2.5" is
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3 PSI per 100 feet
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engine pressure =
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nozzle pressure + friction loss + elevation + appliance
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hand placement on small diameter hose line
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one on the hose the other just behind the nozzle
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latent heat of vaporization
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quantity of heat absorbed by a substance at the point at which it changes from a liquid and vapor
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