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Flashcards in Chapter 4: Tool and Equipment Deck (131)
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Light rescue vehicles are designed to handle ____

only basic extrication and life support functions.


Light rescue vehicles are built on a ____ or ____ chassis.

1-ton or 1 1/2-ton


Medium rescue vehicles are capable of handling

the majority of vehicle rescue incidents


Equipment usually carried by Medium Rescue Vehicles:

* Basic hand tools
* Hydraulic spreaders and cutters
* Pneumatic lifting bags
* Power saws
* Acetylene cutting equipment
* Ropes and rigging equipment


Heavy Rescue Vehicles must be capable of ____

providing the support necessary to extricate victims from almost any entrapment.


Equipment carried by heavy rescue units may include:

* A frames or gin poles
* Cascade systems
* Larger capacity generators
* Trenching and shoring equipment
* Small pumps and foam equipment
* Large winches
* Hydraulic booms
* Large quantities of rope and rigging equipment
* Air compressors
* Ladders


What are the two primary types of rescue vehicle chassis?

commercial and custom


____ are the most commonly used chassis for rescue vehicles. All light and medium chassis units and a large percentage of heavy rescue chassis units are ____.

* Commercial chassis
These are typically used for commercial vehicles such as plumbers trucks, garbage trucks, dump trucks, and delivery trucks.


Custom chassis are ____

built by manufacturers who specialize in fire apparatus.


Common special features incorporated into rescue vehicles.

* All wheel drive
* Rescue vehicle electrical equipment
* Vehicle mounted winches
* Gin poles and A frames
* Hydraulic cranes
* Stabilizers
* Air supply systems



AKA alternators, used when large amounts of power are not necessary. They convert the vehicles DC electricity into AC. Inverters are fuel efficient and produce little or no noise during operation; however they have limited poser generating capacity and limited range from the vehicle.


What is the most common power source used on emergency vehicles.



Vehicle mounted generators usually have a ____ capacity than portable units.



Vehicle mounted generators can be powered in what ways?

* gasoline
* diesel
* Propane
* hydraulic
* power take off systems


Vehicle mounted generators known as power plants generally have ____ and ____ capabilities with capacities up to ____ and occasionally greater.

* 110 and 220 volt
* 50 kilowatts


Some dedicated lighting units have hydraulically operated booms with banks of lights and capacities ranging from ____ to ____ per light.

500 to 1500 watts


A winch is rated at its capacity when the ____ is still on the drum.

first layer of cable


Winch and cable strength are strongest ____. As more cable is wrapped around the drum and the cable becomes layered, the strength ____. As more cable is taken off the drum, the strength capacity ____. For safety reasons, ____ should not be removed from the drum.

* on the first wrap around the drum
* decreases
* increases
* the last layer of cable


Gin Pole

Vertical lifting device that may be attached to the front or the rear of the apparatus; consists of a single pole that is attached to the apparatus at one end and has a woking pulley at the other. Guy wires may also be used to stabilize the pole.



Vertical lifting device that can be attached to the front of rear of the apparatus; consists of two poles attached several feet apart on the apparatus and whose working ends are connected to form the letter A. A pulley or block and tackle through which a rope or cable is passed is attached to the end of the frame.


Hydraulic Cranes assist in ____, and have lifting capabilities of ____ or more.

*vehicle stabilization, removal of heavy vehicle components, and raising and lowering personnel and equipment.
* 18 tons


Stabilizers on rescue vehicles are used to ____

steady the vehicle when deploying a gin pole, A frame, or hydraulic crane.


Three common types of air supply systems on rescue vehicles:

* Cascade systems
* Breathing air compressors
* Non-breathing air compressors


Cascade Systems

Three of more large, interconnected air cylinders, from which smaller SCBA cylinders are recharged; the larger cylinders typically have a capacity of 300 cubic feet


When a rescue vehicle contains a breathing air compressor, be sure to position the apparatus ____

Upwind of any emergency scene.



Wooden or plastic blocks used to stabilize a vehicle during vehicle extrication or debris following a structural collapse; typically 4X4 inches or larger and between 16 to 26 inches long


The advantages and disadvantages of plastic cribbing.

* Advantages
- Plastic cribbing is twice as strong as wood, and is impervious to oil, gasoline, and other substances that can soak into and contaminate wood.
* Disadvantages
- Provides no warning prior to failure where wood will crack, it may be slippery when wet, and is more expensive and harder to replace than wood.


A ____ is the most common cribbing application in. vehicle extrication.

Box crib


There should be a minimum of ____ of overlap on all four corners of the box crib, and cribbing ends should ____.

* four inches
* extend beyond the sides touching the layer


The more members used to construct the individual layers of a box crib the more it will ____

strengthen the box crib and increase its load carrying capacity.