Great balls of fire
Which type of ignition occurs without any external heat or flame igniting the fuel?
Autoignition
For flaming combustion to occur, fuels must be in what state of matter?
In the gaseous state
Loading large diameter hose onto the rear apparatus bed is one of the very few times that firefighters are allowed to:
Stand on the tailboard when the vehicle is in motion
How are portable fire extinguishers classified?
By the type of fire they are designed to extinguish
Why is it important to use the same path to exit the IDLH atmosphere that was used to enter?
Reduces the chance of becoming disoriented
Smoldering charcoal is an example of what kind of combustion?
Non-flaming
List the four elements of the fire tetrahedron
Heat, oxygen, fuel, self-sustaining chemical reaction
What are pre-connects?
Attack hoselines carried in places such as raised trays, transverse beds, tailboard compartments, or front bumper wells that are already connected to a discharge valve
What type of fuels is a Class B fire extinguisher designed to extinguish?
Flammable liquids
What does the end-of-service time indicator on an SCBA do?
Warns the wearer that air supply is running low
In order to burn, solid fuels must go through what process?
Pyrolysis
Air normally consists of what percent oxygen?
21
What is hard suction hose typically used for?
Drafting from a static water source
What happens when water is applied to a Class D fire?
It can react violently
Give an example of a harmful gas commonly found as a product of combustion in fires (think Toxic Twins)
Hydrogen cyanide
Carbon monoxide
In order to burn, liquid fuels must go through what process?
Vaporization
List the four stages of fire development
Incipient, growth, fully involved, decay
Running over hoses with vehicles, excessive pump pressure, and water hammer will cause which type of damage?
Organic, thermal, corrosive, or mechanical
Mechanical
What type of extinguishing agent should be used on a Class D fire?
Dry powder
Which part of a structure coat is designed to enable rescuers to assist a downed firefighter?
Which material is least able to conduct heat: air, steel, copper, concrete
Air
Give three examples of extreme fire behavior
Flashover, smoke explosion, backdraft
What is a Higbee cut?
A flattened angle at the end of the threads that prevents cross threading
Class K extinguishers convert fatty acids in oils to a soapy film, which is known as the process of:
Saponification
NFPA 1500 prohibits _________ that prevent a complete seal between the SCBA facepiece and the wearer's face
Beards