Wk 5: Midterm Flashcards
The basic unit of firefighting operations is called a:
company
What is the purpose of a fire department member assistance program (MAP)?
Offer easily accessible, confidential assistance with personal problems that affect job performance
What does it mean to practice situational awareness on the fireground?
Being observant about hazards and changing conditions
What are personnel accountability systems designed to do?
track Personnel in and out of the IDLH environment
When answering nonemergency telephone calls, remember to be professional and courteous because you are:
representing your department.
Communications equipment that is going to be used in flammable atmospheres must be:
intrinsically safe
Which channel would be assigned for fireground operations only?
tactical channel
Which characteristic of Type IV construction buildings can contribute to the intensity of a fire once it starts?
High concentration of wood
Because unprotected stairwells are not enclosed with fire-rated construction, they:
may serve as a flow path for smoke and fire.
What type of roofing material is often applied on top of roof decking?
asphalt shingles
Which type of door consists of thin pieces of wood, glass, or louvers placed within a framed rectangular area?
slab door
Fires involve a heat-producing chemical reaction between fuel and:
an oxidizer.
What occurs when a mixture of fuel and oxygen encounter an external heat source with sufficient heat or thermal energy to star the combustion reaction?
piloted ignition
Which product of combustion acts as a chemical asphyxiant by excluding oxygen from the blood, leading to hypoxia of the brain and tissues?
Carbon monoxide (CO)
What is the MOST common source of heat in combustion reactions?
chemical energy
Which heat transfer mechanism is dependent on several factors including the turbulence and velocity of moving gases?
convection
What will a liquid with a specific gravity of less than one do when combined with water?
float
In most compartment fires, the energy released in fire is directly proportional to the:
amount of oxygen available for combustion.
Fires develop through four stages: Incipient, growth,_______, and decay.
fully-developed
A compartment is any:
space divided into separate areas.
All PPE designed for structural firefighting just meet the requirements of:
NFPA 1971
The SCBA backplate and harness assembly:
is used to hold the breathing air cylinder.
What do manufacturers sometimes add to stored-pressure water extinguishers in order to increase their effectiveness?
class A foam
What is a characteristic of carbon dioxide (CO2) extinguishers?
CO2 gas displaces oxygen to smother the fire
When operating a portable fire extinguisher, it is safest to approach the fire:
with the wind at your back.
When operating a portable fire extinguisher,:
aim the nozzle at the base of the fire.
When firefighters apply water to the hot gas layer in a compartment, it will
reduce the radiant heat flux from the upper layer.
What can happen if excess steam is produced inside the structure as a result of applying water on the fire?
Disruption of the thermal layering
Why is it dangerous to work below the hot gas layer without attempting to cool it?
The smoke contains fuel, and it may ignite at any time.
When a firefighter controls doors and windows during fire attack, it is an example of:
oxygen exclusion
Which condition specific to search and rescue operations should be communicated to crew members and/or your supervisor?
Known locations of victims or occupants
Which of the following is one of the three principles of air management?
know your point of no return
If air monitoring indicates that the oxygen level in the atmosphere is below 19.5 percent
the IC or Incident Safety Officer should be notified.
Secondary searches:
use the same steps as primary searches.
the four steps involved in VEIS are:
vent, enter, isolate, search.
When an abandon signal is given, all exiting crews must:
proceed to a designated safe area outside the collapse zone.
What should you do if you become entangled while trying to evacuate a building?
Broadcast a MAYDAY, then attempt to free yourself
After locating a downed firefighter in an IDLH atmosphere, what is the RIT’s priority?
Providing breathing air to the firefighter and exiting the IDLH atmosphere
Which statement describes two-way couplings?
Do not have male and female threads
How can mechanical damage to hoselines be avoided
Deploy hoselines away from debris
In order to make the process of loading large diameter hose (LDH) more efficient,:
many apparatus are equipped with an LDH hose roller.
What is a disadvantage of the flat hose load?
The hose folds contain sharp bends.
Reduced water volume or pressure from hydrants can result from:
greater demand than the system can provide.
Which device would be used if multiple supply lines need to be merged into one hoseline, such as when LDH is not available to overcome friction loss in a long hose lay?
Siamese appliance
In order to avoid overloading a ladder when advancing a hoseline up it
only one firefighter should be on a section of ladder at a time.
Which type of nozzle that is designed for use on fires in confined spaces has a rotating head that distributes water in a circular pattern?
Cellar nozzle
