Podcast
Questions and Answers
During extraction for a driver in a frontal MVA, which action should be considered a last resort?
During extraction for a driver in a frontal MVA, which action should be considered a last resort?
- Displace the seat with a powered hydraulic tool (correct)
- Use a glass breaking tool
- Use manual tools
- Remove the doors
How are most windshields affixed in place?
How are most windshields affixed in place?
Glue
What is laminated glass?
What is laminated glass?
A thin layer of plastic sandwiched between two layers of glass
What must occur before the ram or high-lift jack can be removed in a dash displacement?
What must occur before the ram or high-lift jack can be removed in a dash displacement?
When doing a dash displacement, which tool is used to push the dash forward?
When doing a dash displacement, which tool is used to push the dash forward?
Where should rescuers begin their cuts on a windshield?
Where should rescuers begin their cuts on a windshield?
Which action should be taken first in a dash displacement?
Which action should be taken first in a dash displacement?
Which action should be taken if a vehicle has an undeployed air bag following an MVA?
Which action should be taken if a vehicle has an undeployed air bag following an MVA?
Which item is commonly used to stabilize a vehicle suspension system?
Which item is commonly used to stabilize a vehicle suspension system?
Which type of glass is the rear window of a vehicle?
Which type of glass is the rear window of a vehicle?
A roll-over protection system is most likely to be found in which type of vehicle?
A roll-over protection system is most likely to be found in which type of vehicle?
A vehicle air bag will remain energized until the:
A vehicle air bag will remain energized until the:
A windshield is made of _______ glass.
A windshield is made of _______ glass.
After step chocks are placed under the side of the vehicles, rescuers should:
After step chocks are placed under the side of the vehicles, rescuers should:
Body-over-frame construction is most likely to be found in which vehicle?
Body-over-frame construction is most likely to be found in which vehicle?
Compared to a dash lift, the dash roll offers which advantage?
Compared to a dash lift, the dash roll offers which advantage?
During a dash displacement, the relief cut should be made:
During a dash displacement, the relief cut should be made:
Enhanced protective glass (EPG) is:
Enhanced protective glass (EPG) is:
How are traffic hazards best managed?
How are traffic hazards best managed?
If the air bag did not deploy during a vehicle accident, what must be done prior to disentangling a victim?
If the air bag did not deploy during a vehicle accident, what must be done prior to disentangling a victim?
In an electrical-drive vehicle, high voltage cables are typically colored:
In an electrical-drive vehicle, high voltage cables are typically colored:
In a vehicle extraction, what is one of the four functions performed to gain access and disentangle a victim?
In a vehicle extraction, what is one of the four functions performed to gain access and disentangle a victim?
To break a side window in a vehicle, where should the window be struck?
To break a side window in a vehicle, where should the window be struck?
Vehicle air bags may remain energized for as long as ______ minutes after the vehicle battery has been disconnected.
Vehicle air bags may remain energized for as long as ______ minutes after the vehicle battery has been disconnected.
What are step chocks commonly used for?
What are step chocks commonly used for?
What are the vertical support members that hold up the roof on a vehicle?
What are the vertical support members that hold up the roof on a vehicle?
What divides the engine compartment of a car from the passenger compartment?
What divides the engine compartment of a car from the passenger compartment?
What happens if a windshield is stuck with a spring-loaded center punch?
What happens if a windshield is stuck with a spring-loaded center punch?
What is the correct procedure when performing extraction in a vehicle with an undeployed air bag?
What is the correct procedure when performing extraction in a vehicle with an undeployed air bag?
What is the designation for the posts located behind the rear doors of a passenger vehicle?
What is the designation for the posts located behind the rear doors of a passenger vehicle?
What is the designation for the post located between the front and rear doors on a four-door vehicle?
What is the designation for the post located between the front and rear doors on a four-door vehicle?
What is the final stage of the extraction process?
What is the final stage of the extraction process?
What is the minimum size of hose line for fire protection at a vehicle accident?
What is the minimum size of hose line for fire protection at a vehicle accident?
What should be done if there is a small gap between the top of a box crib and the object being raised?
What should be done if there is a small gap between the top of a box crib and the object being raised?
When operating at an MVA, when is it permissible not to wear a high-visibility vest?
When operating at an MVA, when is it permissible not to wear a high-visibility vest?
When removing the victim from the vehicle, who usually directs the move?
When removing the victim from the vehicle, who usually directs the move?
Where is the base of a hydraulic ram placed when performing a dash roll?
Where is the base of a hydraulic ram placed when performing a dash roll?
Where is the relief cut made in a dash displacement?
Where is the relief cut made in a dash displacement?
Where should the hydraulic spreader tips be placed when separating a door from a vehicle on the hinge side?
Where should the hydraulic spreader tips be placed when separating a door from a vehicle on the hinge side?
Where should the posts be cut when removing the roof of a vehicle?
Where should the posts be cut when removing the roof of a vehicle?
Which hazard is of particular concern with electric drive vehicles?
Which hazard is of particular concern with electric drive vehicles?
Which is another term for the firewall of a vehicle?
Which is another term for the firewall of a vehicle?
Which is the last part of a windshield that should be cut?
Which is the last part of a windshield that should be cut?
Which is the most common technique for gaining access to a vehicle after a collision?
Which is the most common technique for gaining access to a vehicle after a collision?
Which is the most efficient and widely used tool for opening a jammed vehicle door?
Which is the most efficient and widely used tool for opening a jammed vehicle door?
Which is used to prevent the dash from moving back after it has been displaced?
Which is used to prevent the dash from moving back after it has been displaced?
Which statement about gaining access through a windshield is correct?
Which statement about gaining access through a windshield is correct?
Which step in the door displacement process comes first?
Which step in the door displacement process comes first?
Which step of the extraction process consists of reducing, removing, or mitigating the hazards at the scene?
Which step of the extraction process consists of reducing, removing, or mitigating the hazards at the scene?
Which step should be performed first at a vehicle accident?
Which step should be performed first at a vehicle accident?
Which tool is best suited for breaking tempered glass?
Which tool is best suited for breaking tempered glass?
Which type of rescue-lift air bag is most commonly used by firefighters?
Which type of rescue-lift air bag is most commonly used by firefighters?
Which type of vehicle operates using a battery-powered electric motor combined with a conventional gasoline engine?
Which type of vehicle operates using a battery-powered electric motor combined with a conventional gasoline engine?
Study Notes
Vehicle Extraction and Safety Procedures
- Displacement of a seat during driver extraction is a last resort and should utilize a powered hydraulic tool.
- Windshields are typically affixed using glue, ensuring a strong seal.
- Laminated glass consists of a plastic layer sandwiched between two glass layers for safety.
- Prior to removing the ram or high-lift jack in dash displacements, the sill must be cribbed for stability.
- Hydraulic rams are employed to push the dashboard forward during extractions.
Tools and Techniques for Vehicle Rescue
- Initial cuts on a windshield should be made at the top center for effective access.
- Always remove the front doors before commencing dash displacement procedures.
- Involves disconnecting the battery if a vehicle has an undeployed airbag to prevent activation during extraction.
Vehicle Stability and Rescue Operations
- Step chocks serve to stabilize a vehicle's suspension during the rescue process.
- Rear windows are usually made from tempered glass, shattering safely upon impact.
- Roll-over protection systems are primarily found in convertibles for enhanced passenger safety.
Airbags and Electrical Considerations
- Airbags remain energized until their capacitor fully discharges, posing a risk post-accident.
- For safety, hydraulic systems in electric-drive vehicles are typically marked with orange cables.
- Ensure a safe distance from airbags if they have not deployed when disentangling victims.
Extraction Procedures and Safety Measures
- Extraction involves bending, distorting, or displacing vehicle components to free a victim.
- For breaking side windows, target should be a lower corner to ensure effective shattering.
- Disconnect the battery before disentangling victims from vehicles with undeployed airbags.
Vehicle Construction and Designations
- Body-over-frame construction is commonly found in pickup trucks.
- C-post refers to the vertical supports behind the rear doors of a passenger vehicle, while B-posts are between front and rear doors.
- Bulkhead is the term for the divider between the engine compartment and passenger area in vehicles.
Extraction Process Steps and Equipment
- The extraction process culminates in securing the scene to ensure safety for all involved.
- Minimum hose size for fire protection during vehicle accidents is 1½ inches (38 mm).
- If there's a gap between a crib and raised object, close it using wooden wedges for added stability.
Safety Equipment Use
- High-visibility vests are not required during fire suppression but must be worn at all other times at an accident scene.
- The person stabilizing the victim's cervical spine usually directs movements during extraction from the vehicle.
- Hydraulic rams are placed at the base of the B-post when performing a dash roll to ensure correct leverage.
Hazard Awareness and Specialized Techniques
- Concern for high-voltage components exists specifically with electric drive vehicles, necessitating careful handling.
- When accessing a vehicle, door displacement is typically the most common technique used post-collision.
- Hydraulic spreaders are preferred tools for opening jammed vehicle doors effectively.
Window Removal Techniques
- The last part of a windshield to cut for removal should be the bottom to facilitate access without compromising structure until necessary.
- Using a spring-loaded center punch is the most effective method for breaking tempered glass.
- High-pressure rescue-lift air bags are the type most frequently employed by firefighters for lifting heavy debris.
Hybrid Vehicles
- Hybrid vehicles integrate a battery-powered electric motor with a traditional gasoline engine for improved efficiency and reduced emissions.
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Description
Test your knowledge on key terms and concepts from Chapter 24 related to emergency vehicle extraction. This set features essential questions about windshields, laminated glass, and hydraulic tools used in vehicular accidents. Perfect for anyone studying emergency response procedures.
