Classes of Fire
Heat
Dangerous Situations
Fire Attack Methods
Fireground Operation Considerations
100
Characterized by combustible metals and requiring a yellow fire extinguisher
What is a Class "D" Fire?
100
type of heat transfer occurring by direct contact (example: heat transfer along a metal beam)
What is conduction?
100
Known as a "smoke explosion".
What is a "backdraft"?
100
Fire attack method that involves a quick entrance in the building, often without a hsoe line, to search for a victim, often used in extreme situations as a last resort
What is "Vent, Enter, Search"?
100
Key component upon initial arrival on scene that involves getting a walkaround look at all sides of a structure/situation
What is a "360 degree" view?
200
Characterized by energized electrical equipment
What is a Class "C" Fire?
200
Method of heat transfer by through heated air
What is convection?
200
Phenomenon where all articles in the room reach ignition temperature simultaneously and then ignite.
What is "flashover"?
200
Method of fire attack often conducted from the exterior of a structure due to untenable conditions inside the building
What is "defensive" mode or attack?
200
Term used to signify that an engine has been hooked up to a hydrant and water is flowing
What is "hard water"?
300
Characterized by Ordinary combustibles, paper, wood
What is a Class "A" Fire?
300
Heat transfer by waves of heat traveling between two objects
What is radiation?
300

Safety area designated around a building to avoid during firefighing and overhaul operations because of building instability

What is a "collapse zone"?

300
Method of fire attack where the hose stream is directed off of the ceiling, wall, or other object to deflect the water onto the fire
What is "indirect" attack?
300
Initial impression upon arriving on scene , tasking into account building, fire location, time of day, etc.,,,
What is "size up"?
400
Characterized by flammable liquids
What is a Class "B" Fire?
400
a large scale out of control fire, greater than a general alarm
What is a "conflagration"?
400

Phenomenon where the superheated gasses contained in the smoke periodically ignite as the smoke moves forward

What is "rollover"?

400
First radio transmission given by first-in officer/incident commander
What is "initial on-scene report"?
500
Extinguishing agent denoted by "AFFF"
What is Aqueous Film Forming Foam?
500
Phenomenon /weather system often created by swirling winds during a forest fire
What is a "firestorm" or "fire tornado"/
500
When the pump loses water supply during firefighting operations and the impeller begins to spin off kilter and out of contol
What is "caviation"?
500
Method of fire attack that uses aggressive approach toward the fire inside a structure
What is "direct" or "interior" attack?
500
Used in Boston, a type of hydrant carried on the apparatus that screws into a special receptacle in the street that connects with the water main/hydrant system
What is a "Lowry Hydrant"?
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