Fire Behavior Flashcards
When does flashover occur?
Between the growth and fully develop stages
This is the stage a fire at which all surfaces and objects within a space has been heated to their ignition temperature and simultaneously ignite all surfaces and objects in the space.
Flashover
When do backdraft conditions typically exist?
In the decay stage after the fire compartment has consumed all available oxygen
This is observed when flames present and layers of smoke as a result of heated gases that are pushed under pressure from the fire area into uninvolved areas?
Rollover
This is the layering of smoke and gas clouds?
Stratification
What are the four stages of fire growth?
Incipient
Growth
Fully developed
Decay
Rollover should serve as a warning that the fire area may be reaching what point?
Flashover
During this stage, fire develops and rollover is often seen in the adjacent compartment?
Growth stage
Effective engine company operations rely on the company’s ability to do what?
To advance to and extinguish the seat of the fire and all other areas of fire extension inside and outside the structure
When should ventilation needs be identified?
When the fire officer complete their size up
What does proper ventilation decrease The likelihood of?
Flashover or rapidfire development event any creases the life safety factor of all occupants and firefighters within the fire structure
In most situations what should be in place prior to ventilation?
A charged hoseline
When using hydraulic ventilation the host rain should cover what percentage of the opening?
80%
Using this type of ventilation technique the conditions within the compartment improves and increases visibility to enable the engine company to improve their environment?
Hydraulic ventilation
What are the fire ground principles of smoke?
Smoke is potential fuel
Smoke density and color together or an indicator of the flammability
Velocity and pressure or indicators of heat and flowpath
Volume is a indicator of fire intensity
All of the above indicators for a incident profile regarding the location, status, and extent of fire