Firefighting Fundamentals

Question 1

What is the firefighter’s primary and secondary duty?

Answer 1

Primary is to save lives. Secondary is to extinguish fires and limit damage to aircraft, shipboard, airfield installed equipment, and/or airfield structures

Question 2

What are the key elements in a fire?

Answer 2

Heat, fuel, oxygen

Question 3

Explain the fire tetrahedron

Answer 3

Heat, fuel, oxygen, chemical chain reaction

Question 4

What are the four classes of fire?

Answer 4

Class A- Creates ash (wood, cloth, etc…)
Class B- Liquids
Class C- Electrical fires
Class D- Metals

Question 5

Extinguisher for class A?

Answer 5

H2O, AFFF

Question 6

Extinguisher for class B?

Answer 6

PKP, CO2

Question 7

Extinguisher for class C?

Answer 7

Energized- CO2, Halon, PKP, H2O

Deenergized- Treat as A, B, D

Question 8

Extinguisher for class D?

Answer 8

H2O in a high velocity fog

Question 9

What is AFFF?

Answer 9

Synthetic fluorocarbon, noncorrosive, never expires. 3% and 6% used.

Question 10

What is not suitable for large fuel fires?

Answer 10

Water

Question 11

What is Halon 1211?

Answer 11

Electrically nonconductive gas with no residue clean up

Question 12

What is carbon dioxide used for?

Answer 12

Used for displacing oxygen as it is 1.5x heavier than air

Question 13

What is PKP?

Answer 13

Purple K Powder, potassium bicarbonate. Extinguishes flames by breaking combustion chain.