Trench and Vehicle Rescue Operations

Questions and Answers

What should be eliminated when assisting with trench rescue?

Sources of vibration such as apparatus and heavy equipment.

What should be done if the ignition is not accessible in non-electric vehicles?

Shut down the electrical system by disconnecting the negative cable first.

Which glass is designed to spread small fracture lines throughout the plate when struck?

Tempered

Which type of collapse has a good chance of habitable voids but is most vulnerable to secondary collapse?

Cantilever Signup and view all the answers

When responding to an elevator entrapment rescue, what is important to remember?

There are no consistent sequential steps to follow. Signup and view all the answers

What may be involved in stabilizing a rescue incident?

Diverting or blocking traffic. Signup and view all the answers

What is a guideline when using a winch?

Position the winch as close as possible to the object being pulled. Signup and view all the answers

Which type of water or ice rescue is extremely dangerous because of powerful undercurrents?

Low-head or low-water dams Signup and view all the answers

What is the most effective tool for removing doubly laminated glass?

Saws Signup and view all the answers

In what type of rescue may a Fire Fighter II set up and monitor the supplied air respirator system?

Confined-space rescue. Signup and view all the answers

Which vehicle frame has the vehicle's stress-bearing elements and sheet metal body parts built as one unit?

Unibody. Signup and view all the answers

Which rescue tool is used to create an anchor point above an opening?

Tripod. Signup and view all the answers

Which tools have a square drive to attach a socket and are ideal for disassembling machinery?

Pneumatic impact tools. Signup and view all the answers

What is used to stabilize a vehicle that is on its roof or side by creating a stabilizing triangle?

Tensioned buttress systems. Signup and view all the answers

What is the purpose of a tensioned buttress system?

Stabilize vehicles resting on their sides or roofs. Signup and view all the answers

What is a primary hazard of cutting the steering wheel ring?

Accidental deployment of the air bag. Signup and view all the answers

Which rescue saw is typically gasoline powered and has different blades for cutting various materials?

Rotary rescue saw. Signup and view all the answers

Manual stop switches on escalators are generally located where?

On nearby wall or handrail supports at the top and bottom of the unit. Signup and view all the answers

Firefighters should never attempt to perform rescue tasks for which they are not what?

Trained, qualified, and equipped. Signup and view all the answers

The controlled opening near the Command Post is monitored by whom?

The Accountability Officer. Signup and view all the answers

For which type of rescue are rescuers likely to require outside expertise?

Machinery rescue. Signup and view all the answers

At a vehicle rescue incident, if firefighters are not engaged in fire suppression or extrication, they should wear what?

An approved retroreflective vest. Signup and view all the answers

Which rescue tool is typically used when objects must be pushed farther than the maximum opening distance of hydraulic spreaders?

Extension rams. Signup and view all the answers

Which vehicle frame is used on larger automobiles and trucks?

Full or rigid frame. Signup and view all the answers

Which rescue tool can be used for stabilization in conjunction with cribbing?

Hydraulic jack. Signup and view all the answers

Why should brightly colored cables never be touched, cut, or opened on electric vehicles?

They contain intermediate or high-voltage charges. Signup and view all the answers

Which rescue saw is quiet, highly portable, and easy to handle?

Whizzer saw. Signup and view all the answers

What should be continually evaluated for size-up?

What resources will be needed to resolve the situation. Signup and view all the answers

Which type of collapse occurs when the floor and/or roof assemblies on both sides of a load-bearing center wall collapse?

A-frame. Signup and view all the answers

Which power source can be provided by rechargeable batteries or portable generators?

Electric. Signup and view all the answers

What is the first step of an extrication operation?

Vehicle incident size-up. Signup and view all the answers

For which type of rescue would the Fire Fighter II monitor communication channels and assist victims?

Cave, mine, and tunnel rescue. Signup and view all the answers

What should be done when responding to any situation involving electricity?

Call for the electric company to respond. Signup and view all the answers

What is an item the crew member assessing the immediate area would identify?

Extrication tasks that may be required. Signup and view all the answers

Which is a guideline when stacking pneumatic lifting devices?

Never stack more than two devices. Signup and view all the answers

Only personnel directly involved in resolving the emergency are allowed within which area?

Hot zone. Signup and view all the answers

Vehicle components made with _____ can cause high heat fires at a vehicle incident.

Magnesium. Signup and view all the answers

Which passenger safety system includes pretensioners that present a significant ignition hazard?

Seat belts. Signup and view all the answers

From an extrication standpoint, every vehicle can be considered to have how many sides?

Eight sides. Signup and view all the answers

Access is limited to personnel directly supporting work performed at the site of the actual emergency in the:

Warm zone. Signup and view all the answers

How are vehicle door and roof posts normally identified?

Alphabetically from front to rear. Signup and view all the answers

Which task must the Fire Fighter II know to assist in technical rescue incidents?

Provide direction on rescue tasks. Signup and view all the answers

Which victims should receive the highest priority for extrication?

Seriously injured victims. Signup and view all the answers

Removing the doors and roof from a unibody construction vehicle can seriously compromise what?

Its structural integrity. Signup and view all the answers

Which type of rescue has limited means of entry and is not designed for continuous occupancy?

Confined-space rescue. Signup and view all the answers

A Nader bolt and a U-bolt are two types of what found on vehicles?

Latching mechanisms. Signup and view all the answers

Which vehicle component consists of body material that surrounds the area of the rear tire?

Quarter panels. Signup and view all the answers

Which is a characteristic of plastic cribbing?

Resists contamination from fuel, oil, or other substances. Signup and view all the answers

What are the most common conventional fuels?

Gasoline and diesel. Signup and view all the answers

Before entering the hot zone, personnel must do what?

Sign in to the personnel accountability system. Signup and view all the answers

What would be used to raise a vehicle that is on its roof or side?

Pneumatic lifting devices. Signup and view all the answers

With increasing safety standards, many vehicle manufacturers use what type of safety glass?

Laminated. Signup and view all the answers

Which heavy-duty rescue tool is usually used to support collapsed structural members?

Bar screw jack. Signup and view all the answers

What is the primary hazard at a vehicle extrication incident?

Traffic. Signup and view all the answers

Where should apparatus be parked at a vehicle extrication incident?

So that they form a protective barrier between the scene and oncoming traffic. Signup and view all the answers

What should be used to prevent horizontal movement of a vehicle with all wheels on the ground?

Wheel chocks. Signup and view all the answers

Why is removing windshields no longer standard practice during extrication?

Many automobiles use the windshield as a structural component. Signup and view all the answers

Which air-pressurized rescue tool allows rescuers to lift or displace objects?

Pneumatic lifting devices. Signup and view all the answers

What must a Fire Fighter II be able to do to assist at technical rescue incidents?

Recognize hazards associated with the type of incident. Signup and view all the answers

The first priority in a structural collapse rescue is to do what?

Help untrapped victims to a safe area. Signup and view all the answers

Which vehicle component consists of a vertical panel wall in front of the A-post?

Kick panels. Signup and view all the answers

Which statement about tools used in rescues is correct?

Tools from different manufacturers may have different capabilities. Signup and view all the answers

What must firefighters be careful about when cutting posts?

Activating seat belt pretensioners or side curtain air bags. Signup and view all the answers

What should be done if none of the doors in a vehicle extrication incident open normally?

Use a tool to release one of the locks. Signup and view all the answers

Which passenger safety system is commonly called air bags?

Side-impact protection systems (SIPS). Signup and view all the answers

What determines the vehicle's structural integrity?

Strength of the vehicle's chassis after a collision. Signup and view all the answers

What is the next step after the scene has been assessed at a vehicle incident?

Remove roadway hazards. Signup and view all the answers

What vehicles have danger associated with the high voltage stored in their batteries?

Electric and hybrid vehicles. Signup and view all the answers

Which rescue tool is the least stable of jacks?

Ratchet-lever jack. Signup and view all the answers

The first task during size-up of a water or ice incident is to determine what?

Whether rescue or recovery is required. Signup and view all the answers

Which type of collapse occurs when exterior walls collapse simultaneously?

Pancake. Signup and view all the answers

After the scene has been stabilized, what is the next priority?

Provide basic patient care to accessible victims. Signup and view all the answers

Study Notes

Trench Rescue

Eliminate sources of vibration to ensure safety during trench rescue operations.

Vehicle Rescue

In non-electric vehicles, always disconnect the negative cable first when shutting down the electrical system.
Unibody vehicles have stress-bearing elements and sheet metal parts built as one unit, which affects their structural integrity during rescue.
Full or rigid frames are used in larger vehicles designed for heavy-duty loads.
When cutting the steering wheel, risk of accidental airbag deployment exists.
Rescue priority is given to seriously injured victims during extrication scenarios.
Firefighters must wear approved retroreflective vests if not involved in fire suppression or extrication during vehicle rescue.

Collapse Types

Cantilever collapses have a chance of forming habitable voids but are susceptible to secondary collapse.
A-frame collapses occur when floor/roof assemblies on either side of a central load-bearing wall fail.
Pancake collapses happen when exterior walls give way, causing upper structures to collapse downwards.

Tools and Equipment

Saws are the most effective for removing doubly laminated glass.
Hydraulic jacks support collapsed structures and can stabilize during rescues.
Pneumatic impact tools with square drives are essential for disassembling machinery.
Tripod systems create anchor points for rescue operations, especially in confined spaces.
Extension rams assist when hydraulic spreaders cannot push objects far enough.
Whizzer saws are quiet, portable, and ideal for delicate cutting tasks.

Rescue Operations

Rescue saws can be powered by gasoline for cutting various materials such as wood, metal, and masonry.
Tensioned buttress systems stabilize vehicles on their side or roof, creating a stabilizing triangle.
Before entering the hot zone of a scene, personnel must sign in to the accountability system.
Only personnel directly involved are permitted in the hot zone, while the warm zone has restricted access for supportive operations.

Electricity and Vehicle Safety

Brightly colored cables on electric vehicles are high-voltage and must never be touched.
Passive safety systems, including seat belt pretensioners, pose ignition hazards if not disabled.

Water and Ice Rescues

Low-head dams present extreme danger due to underwater currents that complicate escape.
The initial assessment for water or ice incidents should establish the need for rescue versus recovery.

Accountability and Procedures

The Accountability Officer monitors controlled openings at the command post to ensure personnel safety and efficiency.
During extrication, assess the immediate area for necessary tasks around the vehicles and address roadway hazards.

Miscellaneous

Vehicle door and roof posts are identified alphabetically from front to rear.
Increasing use of laminated safety glass is standard in newer vehicles.
Recognizing hazards is crucial for Fire Fighter II’s in technical rescue incidents.
A primary hazard at vehicle rescues is traffic, necessitating appropriate positioning of apparatus for scene protection.

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Description

Test your knowledge on safety protocols and techniques for trench and vehicle rescue operations. This quiz covers essential considerations to ensure responder and victim safety, structural integrity of vehicles, and types of building collapses. Perfect for firefighters and rescue personnel looking to enhance their skills.