Fire Behavior
What is a Flashover?
Near-simultaneous ignition of most directly exposed combustible material in an enclosed area.
What three points will reading smoke answer for you?
1.) Where is the fire?
2.) How big or intense the fire is?
3.) How fast are conditions changing? (Remember seconds and minutes)
BEFFO ONLY, what is the first step before hooking into a hydrant???
CHECK TO SEE IF IT HAS WATER!!!!
When arriving at a structure fire and placing the engine what do we need to be cognizant of?
The Ladder will be close behind!! Pull ahead of the house so it can get in if possible!
On 3-12 where can you find the purple K fire extinguishers? Hint- There are two possible locations!
Cab driver side
Last compartment driver side
What is Backdraft?
Universal change of Air, O2 will be sucked into a building or compartment of space and then release outwards violently.
Smoke is Fuel, what percentage of particulates makeup smoke?
70%
What are the 5 types of building construction be specific to each type?
type 1- Fire resistive (High rise-commercial buildings)
Type 2-Non Combustible (Metal framing)
Type 3- Ordinary Construction (Older buildings)
Type 4- Heavy Timber (log cabins)
Type 5- Wood frame (Most modern houses)
When backing a piece of apparatus you should always use?
On 3-15 where can you find an attic ladder?
Behind the bucket in the "ladder" section of the boom.
What are the signs that a Flashover may occur?
Any color (more times than not black), thick, fast turbulent smoke, high heat.
What is the difference between laminar and turbulent smoke?
Laminar- Smooth, slow, calm
Turbulent- Fast, thick/rich. Ex, if you have ever seen an old video of a train that ran on coal back in the old days that would give off turbulent smoke!!
What are the 5 classes of fire?
Class A- Solid Materials (wood, paper, some plastics)
Class B- Flammable Liquids (alcohol, grease, oil, paint)
Class C- Flammable gases (natural gas, butane, propane)
Class D- Fires that involve burning metals (sodium, titanium, magnesium)
Class K- Combustible cooking materials (vegetable oil, Grease)
What is a forward hose lay?
What is a reverse hose lay?
Forward- Water source to the scene
Reverse- From the scene to a water source
On 3-13 where can you find bolt cutters?
First Compartment passenger side. (right behind passenger cab door)
What is the Neutral Plane?
The border of hot air coming out and cold air going in.
REMEMBER: The lower the Neutral plane is to the ground the more serious the fire!!
What are the 4 attributes to compare when reading smoke?
Volume
Velocity
Density
Color
BEFFO only, What do you need to do before you raise a ladder?
Make sure there are no overhead obstructions. Like powerlines!!
Pressure needed for a combination nozzle?
Smooth Bore?
Combi- 100
Smooth- 50
Where on 3-12 can you find a portable scene light?
Compartment Between passenger side pump panel and rear passenger door.
Gases igniting at the ceiling level.
What is one of the most important steps to help put a fire out besides water on the hot stuff? Hint: This step is crucial with hot, no visibility conditions.
VENTILATION!!!
To what degree angle will you always approach a car fire?
45!
Pull out your Google Maps! You are operating at a structure fire at 91 Bridge Street with the first due engine on scene, what is the first step as the operator of that apparatus you must do?
Chalk the wheel!
Where on 3-15 can you find the spare TIC battery?
Trick question there isnt one!!