Structural Firefighting

Question 1

What does RECEO stand for?

Answer 1

• Rescue
• Exposures
• Containment
• Extinguishment
• Overhaul

Question 2

What are the 4 stages of combustion?

Answer 2

1. Incipient - No visible smoke or flame.
2. Smouldering - Smoke visible.
3. Flame - Actual fire now exists.
4. Heat - Appreciable heat now exists and fire develops.

Question 3

What is pyrolosyis?

Answer 3

The decomposition of a substance through application of heat.

Question 4

What is the difference between heat and temperature?

Answer 4

Heat is a measure of energy, and temperature is an expression of the relative amount of energy that something has.

Question 5

What is the expansion rate of water to steam at 100 degrees C?

Answer 5

1:1700

Question 6

What is the Heat Release Rate usually measured in?

Answer 6

Watts.

1000 watts (W) = 1 kilowatt (kW)
1000 kilowatt = 1 Megawatt (MW)

Question 7

What is the approximate HRR of a living or bedroom fire?

Answer 7

3-10 MW

Question 8

In which ways can heat be transferred?

Answer 8

• Conduction
• Radiation
• Convection
• Direct burning

Question 9

What are the 4 stages of a compartment fire?

Answer 9

1. Developing stage
2. Flashover stage (transitional)
3. Fully developed stage
4. Decay stage

Question 10

Describe a flashover.

Answer 10

The sudden and sustained transition from a developing fire to a fully developed fire.

Question 11

What are the signs of a flashover?

Answer 11

• fire is well ventilated
• painful radiant heat
• increased rate of pyrolysis
• turbulent neutral plane
• low neutral plane with flaming fingers

Question 12

What are the 3 main types of extreme fire behavior (EFB)?

Answer 12

• Flashover
• Backdraught
• Fire gas ignition

Question 13

Describe the BSAHF acronym.

Answer 13

These are factors to consider prior to entry:

• Building
• Smoke
• Air track
• Heat
• Flame