Shared Flashcard Set

Details

Fire Science Midterm
Midterm
62
Other
Undergraduate 1
10/31/2011

Additional Other Flashcards

 


 

Cards

Term
Engine company
Definition
Deploys hoselines for fire attack and exposure protection
Term
Truck (Ladder) Company
Definition
Performs forible entry, search and rescue, ventilation, salvage and  overhaul,  and utilitie control and provides access to upper levels of structures.
Term
Rescue company
Definition
Searches for and removes victims from areas of danger or entrapment and performs techincal rescue.
Term
Brush Company
Definition
Extinguishes wildland fires and protects structures in the wildland /  urban interface.
Term
Hazmat Company
Definition
Responds to and mitigates hazmat incidents
Term
EMT/ Ambulance
Definition
Provides emergency medical care and transportation to a medical facility.
Term
Special rescue company
Definition
Responds to and performs technical rescue
Term
The fire triangle consists of:
Definition
Oxygen, fuel, heat in order for fire to occur
Term
The fire tetrahedron
Definition
Consists of oxygen, fuel, heat, and a self-sustained chemical, reaction in order for fire to occur.
Term
Potential energy
Definition
Stored energy
Term
Kinetic energy
Definition
Energy possessed by a moving object
Term
Temperature
Definition
Measurement of kinetic energy
Term
BTU
Definition
Amount of heat required to raise the temp of 1lb of water 1 degree f
Term
Pyrolysis
Definition
The chemical decomposition of a substance through the action of heat.
Term
Chemical heat energy
Definition
is the most common source of heat in combustion reactions
Term
Mechanical heat energy
Definition
is generated by friction or compression
Term
Heat of compression
Definition
is the result of a gas being compressed
Term
Conduction
Definition
The transfer of heat from one body to another through direct contact.
Term
Convection
Definition
The transfer of heat from a fluid, liquid, or a gas to a solid surface.
Term
Radiation
Definition
The transfer of heat as an electromagnetic waves such as light waves, radio waves, or x-rays without an intervening medium.
Term
Vapor Density
Definition
Density of gas in relation to air
Term
Specific gravity
Definition
The ratio of mass of a given volume a liquid compared with the mass of an equal volume of water.
Term
Vaporization
Definition
Transformation of a liquid to a vapor (gas)
Term
Flashpoint
Definition
Temp at which a liquid gives off sufficient vapors to ignite but not sustain combustion.
Term
Fire point
Definition
Temp at which a liquid gives of sufficient vapors to sustain combustion.
Term
Oxygen deficient
Definition
is less than 19.5%
Term
Oxygen enriched
Definition
is above 23.5%
Term
Hydrogen cyanide:
Definition
Prevents the body from using oxygen at the cellular level.
Term
Class A Fire
Definition
Ordinary Combustable materials ie: paper/wood/plastics
Term
Class B Fires
Definition
Flammable and combustable liquids and gases
Term
Class C Fires
Definition
Energized electrical equipment
Term
Class D Fires
Definition
Combustible Metals
Term
Class K Fires
Definition
Cooking oils / greases
Term
Four stages of fire
Definition
Incipient, growth, fully developed, and decay
Term
Thermal layering
Definition
The tendency of gases to form into layers according to temperature ( also known as heat stratification or thermal balance)
Term
Rollover / flameover
Definition
Condition where unburned fire gases accumulate at the top of a compartment ignite throughout the hot gas layer. ( a significant indicator of possible flashover)
Term
Flashover
Definition
Rapid transition between the growth and fully developed stage of fire.
Term
Flashover occurs
Definition
between 900-1200 degree f
Term
Incipent stage
Definition
Point at which all three elements of the fire triangle come together.
Term
Growth stage
Definition
Stage in which a fire grows rapidly
Term
Fully developed stage
Definition
Occurs when all available combustables are burning
Term
Decay stage
Definition
Point in which flaming combustion can no longer be supported due to lack of fuel or oxygen.
Term
Backdraft
Definition
Instanteous explosion of superheated gases that occurs when oxygen is introduced into an oxygen depleted confined space.
Term
When water converts to stream at 212f it expands at?
Definition
1700 times
Term
Failure of steel structural members can be anticipated at approx
Definition
1000f
Term
Type 1 Construction (parking garage)
Definition
Fire resistive
Term
Type II Construction (metal warehouse)
Definition
noncombustable
Term
Type III Construction
Definition
Ordinary
Term
Type IV Construction
Definition
Heavy Timber
Term
Collapse zone
Definition
area extending from the base of a wall 1 1/2 times the height of the wall.
Term
Three compontents of turnouts
Definition
Outer shell, moisture barrier, and thermal barrier
Term
Four mechanism of extinguishment
Definition
Smothering, cooling, chain breaking, and saponification
Term
Block creel construction:
Definition
uses continous filament virgin fiber for load bearing elements suitable for life-safety applications.
Term
Class III harness (full body)
Definition
rated for 600lbs
Term
A hard intake strainer requires:
Definition
a minimum of 24" of water above and below to function properly.
Term
Penciling
Definition
Water applied in short burst directly onto a burning fuel until the fire darkens down.
Term
Handline stream flows at
Definition
4-350gpm through 1.5"-3" hoseline
Term
Master stream discharges
Definition
350gpm through a 2.5"-3" hoseline
Term
Three major types of fire streams patterns
Definition
Solids, fog, broken
Term
A broken stream
Definition
Is one that has been broken into coarsely divided drops (produced by a cellar nozzle)
Supporting users have an ad free experience!