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TRANSCRIPT
25
Objectives (1 of 3)
• Describe the vehicle anatomy.
• List the hazards involved in responding to
an emergency scene.an emergency scene.
• List the hazards to look for when arriving
on the scene of a vehicle extrication
situation.
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Objectives (2 of 3)
• Describe cribbing.
• Describe the extrication tools that are used
for stabilizing, bending, cutting, and for stabilizing, bending, cutting, and
disassembling.
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Objectives (3 of 3)
• Describe how to gain access to the victim
of a motor vehicle collision.
• Describe how to disentangle a victim of a • Describe how to disentangle a victim of a
motor vehicle collision.
• Describe how to remove and transport
victims of a motor vehicle collision.
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Introduction
• Beginning fire fighters must understand
the process of extrication.
– Should have some proficiency in extrication – Should have some proficiency in extrication skills
– Most fire departments are involved in some part of the extrication process.
• Members of special rescue teams should
complete a course in rescue techniques.
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Conventional Vehicles
• Majority of vehicles on the road
• Use internal combustion engines
• Burn gasoline or diesel fuel• Burn gasoline or diesel fuel
• Hazards
– Fuel leaks
– Short circuits
– Battery acid leaks
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Alternative-Powered Vehicles (1 of 2)
• Powered by CNG or propane
– Cylinders usually in
trunktrunk
– City buses and other
fleet vehicles
– Identified by CNG
sticker
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Alternative-Powered Vehicles (2 of 2)
• After crash, cylinders or fuel lines could be
damaged.
– CNG could escape.– CNG could escape.
– Threat of BLEVE
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Electric-Powered Vehicles
• Electric motor powered by batteries
• Contains a large number of batteries
• Hazards• Hazards
– Large amount of energy stored in batteries
– Potential electrical shorts
– Leakage from damaged batteries
– Voltage higher then 12-volt car battery
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Hybrid Vehicles
• Battery-powered electric motors and a
gasoline-powered engine
• Electric power at low speed, gas power at • Electric power at low speed, gas power at
high speed
• When stopped both sources turn off
• Hazards posed are same as gas- and
electric-powered vehicles.
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Vehicle Anatomy (1 of 2)
• The front of the vehicle is where the hood is and travels down the road first.down the road first.
• The rear of the car is where the trunk sits and goes down the road last.
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Vehicle Anatomy (2 of 2)
• The left side of the car
• The right side of the vehicle is where the
passenger’s seat is located.passenger’s seat is located.
• Always refer to left and right as they relate
to the vehicle.
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Vehicle Posts
• Connect the body of the car to the roof of
the car and are structural supports
• “A” post is located nearest the front of the • “A” post is located nearest the front of the
vehicle.
• “B” post is located between the front and
rear doors.
• “C” post is located behind the rear doors.
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Bulkhead
• Divides the engine compartment from the
passenger compartment
– The passenger compartment includes the – The passenger compartment includes the front and back seats.
• Sometimes called the occupant cage or occupant
compartment
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Platform Frame
• Platform frame uses beams to fabricate
the load-bearing frame.
– The engine, transmission, and body – The engine, transmission, and body components connect to the frame.
– Provides a sound place for stabilizing the vehicle and an anchor point for attaching cables or extrication tools
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Unibody Frame
• Used in most modern cars
– Combines the vehicle frame and body into a single component single component
– Allows manufacturers to develop lighter weight vehicles
– Remember that unibody vehicles do not have the frame rails found in platform frame vehicles.
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Respond to the Scene
• Safe response includes:– Picking the best route of travel for the time of
day
– Driving in a safe manner
– Knowing limits of your vehicle
– Keeping seatbelts fastened
• Evaluating the dispatch information – Listening carefully for any direction
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Arrival and Size-Up: Traffic
Hazards (1 of 3)
• Determine where to locate your vehicle.
• Take into account the • Take into account the safety of emergency workers, the victims, and the motorists.
• Do not hesitate to request the road to be closed.
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Arrival and Size-Up: Traffic
Hazards (2 of 3)
• Use large emergency vehicles to provide a barrier for motorists.
• Place apparatus at an angle to the crash.
• Traffic cones or flares
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Arrival and Size-Up: Traffic
Hazards (3 of 3)
• Fire fighters need to be visible
– PPE should be bright.
– PPE used at night needs to be equipped with – PPE used at night needs to be equipped with reflective material.
• Be alert for any vehicles that might cause
you injury.
• IC should perform a size-up.
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Arrival and Size-Up: Fire
Hazards • Look for spilled fuels
and other flammable hazards.
• Look for the presence of fire.
• Fire may trap the vehicle occupants and require suppression.
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Arrival and Size-Up: Electrical
and Other Hazards• Electrical hazards
– Look for downed or damaged power lines.
• Other hazards • Other hazards
– Environmental
• Rain, sleet, ice or snow can pose a hazard to
rescue workers.
• Crashes that occur on hills are harder to stabilize.
• Be aware of the possibility of hazardous materials.
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Arrival and Size-Up: Other
Hazards• Infectious bodily fluids
• Sharp edges and objects
• Violent behavior • Violent behavior
• Family pets may react protectively.
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Stabilization: Traffic Hazards
• Traffic must be slowed or stopped as
motorists approach the scene.
• Traffic hazards are best handled by the • Traffic hazards are best handled by the
appropriate law enforcement agency.
• Work with law enforcement officials to
control traffic in a safe manner.
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Stabilization: Fire Hazards (1 of 2)
• It should be standard operating procedure
(SOP) to advance a charged hose line
close to a damaged vehicle.close to a damaged vehicle.
• At least a 1.5" hose should be staffed by a
fire fighter in PPE.
• Hose line can provide protection for
rescuers and victims of the crash.
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Stabilization: Fire Hazards (2 of 2)
• Crashes that pose large fire hazards or
actual fires may require additional fire
suppression resources. suppression resources.
• Small fuel spills can be handled by using
an absorbent material to remove the fuel
from the area around the damaged
vehicle.
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Stabilization: Electrical
Hazards• Disconnecting the vehicle’s power source
should be done following your local SOP.
• Downed power lines should be handled by • Downed power lines should be handled by
the power company.
• Do not approach a vehicle and do not let a
victim leave the vehicle until the electricity
has been controlled.
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Stabilization: Other Hazards
• Heat and cold should be dealt with.
• Ensure adequate lighting at night.
• Prevent slips and falls on wet and icy • Prevent slips and falls on wet and icy
surfaces.
• Wear PPE to reduce the risk of injury from
sharp objects and infectious bodily fluids.
• Remove animals from the scene.
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Cribbing
• Used to stabilize a vehicle
• Lengths of wood used • Lengths of wood used to prevent a vehicle from moving backward and forward
– After cribbing has
been placed, a vehicle
can still move.
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Step Chocks
• Shaped like stair steps and are placed under the side of the vehiclevehicle
• Place one step chock toward the front of the vehicle and a second step chock toward the rear of the vehicle.
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Box Crib
• Standard cribbing can be used to form a box crib.
• Place cribbing at right angles to the preceding layer of cribbing.
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Vehicle Stabilization
• A vehicle on its side or roof is very
unstable.
– Can be stabilized using box cribs or step – Can be stabilized using box cribs or step blocks on each end of the vehicle
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Wedges
• Used to snug up loose cribbing or when using lift airbagsairbags
• Should be the same width as the cribbing with the taper end no less than 0.25" thick
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Rescue Lift Airbags (1 of 2)
• Used to lift a vehicle or object off a victim
• Pneumatic-filled • Pneumatic-filled bladders made of rubber or synthetic material
• Always use cribbing when using rescue lift airbags.
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Rescue Lift Airbags (2 of 2)
• Use extreme caution.
• Adhere to all the safety precautions.
• Should not be used without properly • Should not be used without properly
blocking the wheels
• Rescue lift airbags can fail as they age.
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Low-Pressure Lift Air Bags
• Often used in recovery operations and
sometimes used by departments for
vehicle rescue operationsvehicle rescue operations
• Come in many shapes and sizes; but
square airbags offer greater stability.
• Can be less stable until fully inflated as
compared to high-pressure airbags
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Medium-Pressure Lift Air
Bags • Have either two or three cells inside their
design
• Best when used in aircraft or truck rescue • Best when used in aircraft or truck rescue
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High-Pressure Lift Air Bags
• Most common airbags used by the fire
service for rescue work
• Heavily constructed • Heavily constructed
• Generally made of vulcanized rubber mats
that are reinforced by steel or other
material woven into a fiber mat and
covered with rubber
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Principles of Gaining Access
and Disentangling the Victim• Use these techniques
– Stabilize
– Bend, distort, or
displace
– Cut or sever
– Disassemble
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Tools Used in Extrication (1 of 4)
• Stabilizing tools
– Cribbing
– Rescue lift airbags– Rescue lift airbags
– Step blocks
– High-lift jacks and stabilization jacks
– Be certain that they are placed firmly under the vehicle and that vehicle is stable before attempting to enter it.
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Tools Used in Extrication (2 of 4)
• Bending tools
– Hand tools such as pry
axe, short pry bars,
long pry bars, long pry bars,
hacksaws, screw
drivers, hammers, and
Halligan tools
– Power tools such as
hydraulic rams and
hydraulic spreaders
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Tools Used in Extrication (3 of 4)
• Cutting tools
– Hand tools
– Power tools
• Air, electricity, or
hydraulics.
• Air chisels, rotary or
reciprocating saws,
hydraulic cutters.
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Tools Used in Extrication (4 of 4)
• Tools for disassembling
– Same tools used for construction and repair
– Mechanic’s toolkit contains an assortment of – Mechanic’s toolkit contains an assortment of wrenches and screwdrivers
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Gain Access to the Victim
• Open the door.
– Easiest and simplest
way to gain access
– Try all doors.
– Make sure door is
unlocked.
– Try the outside and
inside handles at the
same time if possible.
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Break Tempered Glass (1 of 3)
• Consider breaking a window if victim’s
condition is serious and doors will not
open. open.
• Do not try to break and enter through the
windshield.
– Made of laminated windshield glass
– Difficult to break
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Break Tempered Glass (2 of 3)
• Side and rear windows
• Break a window away • Break a window away from the victim.
• Use a gloved hand to remove as much of the broken glass as possible to avoid injuring rescuers.
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Break Tempered Glass (3 of 3)
• Aim for a low corner if using something
other than a spring-loaded punch.
• When the window is broken and glass • When the window is broken and glass
removed, try to unlock door.
• Breaking the rear window will sometimes
provide an opening large enough to
enable a rescuer to gain access to the
victim.
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Force the Door (1 of 4)
• Door displacement
• Choose door that will not endanger the not endanger the safety of the victim.
• Use hand tools to bend the sheet metal away from the edge of the door.
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Force the Door (2 of 4)
• Place the spreader in a position so that it
is not in the pathway of the door.
• Do not stand in a position that might put • Do not stand in a position that might put
you in danger.
• Activate the hydraulic tool to push apart
the outer sheet metal skin of the vehicle to
expose the hinges or door latch.
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Force the Door (3 of 4)
• Once the outer sheet metal has been
exposed, close the tips of the spreader
and remove them. and remove them.
• Insert the closed tips onto the inner skin of
the door and the doorjamb just above the
latch or above the hinges.
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Force the Door (4 of 4)
• Activate the spreader.
– Separating a door at the latch side
• Place cribbing under the bottom of the door first. • Place cribbing under the bottom of the door first.
• Some hydraulic tools can cut door hinges.
– Separating a door from hinge side
• Place the spreader on top of the bottom hinge and
separate door from hinge.
• Place cribbing underneath the door to hold it in
place.
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Provide Initial Medical Care
• As soon as you have secured access, provide emergency medical care. medical care.
• Care provided during extrication
• Get the victim stabilized and removed.
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Disentangle the Victim–Fire Fighter II Standard (1 of 3)
• Purpose is to remove the parts of the
vehicle that are trapping the victim
• Remove the sheet metal and plastic from • Remove the sheet metal and plastic from
around the victim.
• It is not “cutting the victim out of the
vehicle.”
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Disentangle the Victim–Fire Fighter II Standard (2 of 3)
• Before beginning disentanglement, study
the situation.
– What is trapping the victim in the vehicle? – What is trapping the victim in the vehicle?
– Perform only necessary procedures.
– The order in which procedures are performed is dictated by scene conditions.
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Disentangle the Victim–Fire Fighter II Standard (3 of 3)
• Protect the victim at all times.
• Use backboards and blankets to shield
victim. victim.
• Explain procedures to victims to reassure
them.
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Displace the Seat–Fire Fighter II Standard (1 of 5)
• In frontal and rear end crashes, the driver may be trapped.
• Displacing the seat can:
– Relieve pressure on
the driver
– Give rescuers more
space for removal
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Displace the Seat–Fire Fighter II Standard (2 of 5)
• Attempt simplest steps first.
– Attempt to move seat back on its track either manually or engaging power seats. manually or engaging power seats.
– Attempt to lower adjustable seat.
– Perform a dash displacement if moving the seat back does not work.
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Displace the Seat–Fire Fighter II Standard (3 of 5)
• As a last resort, use a manual hydraulic
spreader or a powered hydraulic tool to
move the seat back.move the seat back.
– Place one tip of the tool on the bottom of the seat.
– Avoid pushing on the seat channel that is attached to the floor of the vehicle.
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Displace the Seat–Fire Fighter II Standard (4 of 5)
• Place the other tip of the spreader at the
bottom of the “A” post doorjamb.
• Support the victim. • Support the victim.
• Engage the seat adjustment lever on
manual seats and open the spreader in a
careful fashion.
• Seat should move backward in a
controlled fashion.
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Displace the Seat–Fire Fighter II Standard (5 of 5)
• Remove seat back in some cases.
– Cut the upholstery away from the bottom of the seatback.the seatback.
– A reciprocating saw or a hydraulic cutter can be used to cut the supports for the seat back.
– Be certain that the victim is supported and protected during this procedure.
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Remove the Windshield–Fire Fighter II Standard (1 of 5)
• Removing windows provides better
communication between personnel inside
and outside the vehicle.and outside the vehicle.
• Try and roll down windows first.
• Side and rear windows are tempered glass
that can be removed by striking in a lower
corner.
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Remove the Windshield–Fire Fighter II Standard (2 of 5)
• Windshield made of laminated glass
• Cannot be broken by spring-loaded center
punchespunches
• When struck by sharp stone or spring-
loaded center punch, a small mark is
formed, but remains intact.
• Remove the windshield in one large piece.
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Remove the Windshield–Fire Fighter II Standard (3 of 5)
• Most common technique is removing the
windshield by using an axe.
– Protect victim.– Protect victim.
– Begin cutting at the top of windshield at the middle using short strokes of the axe.
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Remove the Windshield–Fire Fighter II Standard (4 of 5)
• Using an axe (continued)
– Cut down the side next
to the “A” post. to the “A” post.
– Finish by cutting the
bottom of the
windshield.
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Remove the Windshield–Fire Fighter II Standard (5 of 5)
• Second rescuer starts at the top of the
windshield and cuts second half of the
windshield. windshield.
• When the second rescuer is finished, lift
windshield out of the frame.
• A saw can be used to accomplish this
technique as well.
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Remove the Steering Wheel–Fire Fighter II Standard
(1 of 3)
• During a crash, the steering wheel may be
pushed back into the victim’s abdomen or
chest. chest.
• Removing the steering wheel can help in
disentangling a victim from the vehicle.
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Remove the Steering Wheel–Fire Fighter II Standard
(2 of 3)
• Removal of the entire steering wheel is
possible using hand or power tools.
– Hand tools include hacksaws or bolt cutters. – Hand tools include hacksaws or bolt cutters.
– Power tools include hydraulic cutters and reciprocating saws.
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Remove the Steering Wheel–Fire Fighter II Standard
(3 of 3)
• One method of removal is to cut the
spokes as close to the hub as possible.
• Second method is to cut the hoop or ring. • Second method is to cut the hoop or ring.
• Can be removed completely or one
section can be cut or removed.
• Cutting the hoop or spokes leaves sharp
edges.
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Displace the Dash–Fire Fighter II Standard (1 of 5)
• During frontal crashes, the dash will get pushed down or backward. backward.
• If victim is trapped by dash it must be removed.
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Displace the Dash–Fire Fighter II Standard (2 of 5)
• Technique is called dash displacement or a dash roll-up.
– Objective is to lift the
dash up and move it
forward.
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Displace the Dash–Fire Fighter II Standard (3 of 5)
• Requires a cutting tool such as hacksaw,
reciprocating saw, an air chisel, or
hydraulic cutter to cut “A” post. hydraulic cutter to cut “A” post.
– A mechanical high-lift jack or hydraulic ram is needed to push the dash forward.
– Cribbing is needed to protect the opening made from displacing dash.
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Displace the Dash–Fire Fighter II Standard (4 of 5)
• Sequence
– Open or remove both
front doors.
– Place backboard
between victim and
the “A” post.
– Cut the bottom of the
“A” post perpendicular
to where it meets the
floor of vehicle.
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Displace the Dash–Fire Fighter II Standard (5 of 5)
• Place the base of the tool at the base of
the “B” post.
• Place the tip of the tool at the bend in the • Place the tip of the tool at the bend in the
“A” post.
• Extend the tool in a controlled fashion.
• Build a crib to hold the sill in position.
• Carefully monitor victim.
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Displace the Roof–Fire Fighter II Standard (1 of 4)
• Advantages
– Equipment can be passed to the emergency medical providermedical provider
– Increases the amount of space available
– Visibility and fresh air supply are improved.
– Helps reduce feeling of panic
– Provides a large exit route for the victim
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Displace the Roof–Fire Fighter II Standard (2 of 4)
• One method is to cut the “A” posts and
fold the roof back toward the rear of the
vehicle. vehicle.
• Roof displacement can be accomplished
with hand tools and power tools.
– Hacksaws, air chisels, or hydraulic cutters.
– Reciprocating saws and powered hydraulic cutters.
25
Displace the Roof–Fire Fighter II Standard (3 of 4)
• Steps for roof displacement
– Assure safety.
– As roof is cut, rescuers
have to support roof.
– Remove all glass.
25
Displace the Roof–Fire Fighter II Standard (4 of 4)
• Cut the posts farthest away from the victim.
• Cut to ensure that the • Cut to ensure that the least will remain.
• Cut at the narrowest point in the post.
• Support each post.
• Cut the post closest to the victim last.
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Remove and Transport the
Victim–Fire Fighter II
Standard (1 of 3)
• Victim needs to be stabilized and packaged in preparation for removal.packaged in preparation for removal.
• Definitive treatment of trauma victims needs to be done at a hospital.
• Amount of stabilization on the victim while in the vehicle should be limited to steps needed to prevent further injury.
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Remove and Transport the
Victim–Fire Fighter II
Standard (2 of 3)
• Develop a plan for victim removal.
• Clear exit pathway • Clear exit pathway
• Directed by a designated person
• Use clear commands.
• Assure adequate number of rescuers.
• Make sure that everyone understands the commands that will be given.
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Remove and Transport the
Victim–Fire Fighter II
Standard (3 of 3)
• Follow directions of EMS personnel in charge of victim care. charge of victim care.
• Transport patient to appropriate medical facility for care as soon as initial stabilization is complete.
• If your department uses a helicopter service, become familiar with procedures.
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Secure the Scene and
Prepare for the Next Call–Fire
Fighter II Standard (1 of 2)
• Final step is to secure the scene and
prepare for the next call. prepare for the next call.
• Gather all of the equipment used, inspect
it, clean it, sharpen it, refuel it, and place it
back in the proper location.
• Sometimes this can be done at the scene.
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Secure the Scene and
Prepare for the Next Call–Fire
Fighter II Standard (2 of 2)
• After major incidents, it may be necessary
to return to the station to clean and restock to return to the station to clean and restock
the apparatus.
• Personnel need to prepare for the next
call.
• Maintain safe practices.
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Summary (1 of 4)
• Most fire departments are involved in
extricating victims from vehicles.
• Extrication should follow logical steps. • Extrication should follow logical steps.
• It is important to prepare equipment and
personnel for extrication emergencies.
• Respond safely and efficiently to an
extrication incident.
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Summary (2 of 4)
• Size-up needs to evaluate all of the
hazards that are present.
• Stabilizing the hazards is essential to • Stabilizing the hazards is essential to
assuring safety for all people at an
emergency scene.
• Tools used for gaining access and
disentanglement work by stabilizing,
bending, cutting, or disassembling.
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Summary (3 of 4)
• You gain access to victims by opening
doors, breaking tempered glass, or forcing
doors. doors.
• Techniques for disentangling victims
include displacing a seat, removing the
windshield, removing the steering wheel,
displacing the dash, or displacing the roof.