Fire Behavior and Pre-plans (Tactics Chap 1) Flashcards
Class of fire involving vegetable oils, animal oils, or fats in cooking appliances
Class K
What are the symbols for Class A,B,C and K fires?
Class A = Green Triangle
Class B = Red Square
Class C = Blue Circle
Class K = Black Hexagon
In addition to direct flame contact, what are the three ways that heat travels and causes fire to extend to other areas?
Convection, Conduction, and Radiation
What are the five stages of fire?
Ignition, Growth, Flashover, Fully Developed, Decay
What stage of fire occurs when the oxygen or fuel starts to diminish?
Decay
What stage occurs when all combustible materials in the fire area are involved in fire?
Fully Developed stage
This is the stage, as fuel, oxygen, heat, and the inhibited chemical chain reaction come together
Ignition
The stage in which the fire starts to develop depending upon the amount of fuel and oxygen that is available and the absence of built-in fire -extinguishing systems
Growth stage
Once the oxygen level gets below ___%, the fire begins its initial decay stage.
16%
_________ is the priority in backdraft conditions
ventilation
___________- is the backbone of a fire dept.
Training
Training fosters ______ and _______
Teamwork and Coopreration
The use of NIMS is mandated in the ______ in homeland Security Presidential Directive/_____
National Response Plan (NRP)
HSPD-5
Preplans should be reviewed ________ to see if modifications are needed
Annually
Determining the amount of water needed to extinguish a fire in a specific building is best accomplished during _______
The preplanning stage
The theoretical amount of water needed to control and extinguish a fire
Needed fire flow
What is the NFA fire flow formula?
Fire Flow = length X width divided by 3
In multistory structures ___% of the required fire flow of the fire floor should be added as exposure protection for each exposed floor above the fire floor to a maximum of ____ floors
25% to a maximum of 5 floors
What percentage of actual fire flow should be given exterior exposures?
25%
The NFA formula is geared towards ______ attacks and its accuracy diminishes with fires involving more than ______%
Offensive attacks
50% involvement
It is found that as the amount of involvement reaches a stage where a defensive attack is necessary, the NFF formula will be found to be _____________
Slightly greater than predicted
If the fire flow requirements exceed the fire flow capabilities of available resources, a ________ mode of operations is usually required
defensive mode
1 1/2” or 1 3/4” hose lines flow
125-175 gpm
2 1/2” hose lines flow approximately
250 gpm
What types of preplans?
???? Look this up
The temperature of flashover is estimated between ___- and ______
900-1100 degrees F
In flashover, Ceiling temperatures can easily exceed ____
1300 degrees F
In the fully developed stage, temperatures can exceed ___
2000 degrees F
The growth stage of a fire begins as air (oxygen) feeds the fire from all directions. This stage is called ______
fuel-limited/controlled
As the burning increases, the oxygen is consumed and the layers of smoke reaches the burning materials. The fire becomes ________
vent-limited/controlled
