Block VI

Question 1

What elements compose the fire tetrahedron?

Answer 1

Heat, fuel, oxygen, and chemical chain reaction

Question 2

Class Alpha Fire

Answer 2

Combustible materials like wood, cloth, fibrous materials, paper.

Use H20 and AFFF

Question 3

Class Bravo Fire

Answer 3

Flammable liquids like gas, oil, jet fuel, etc.

Use AFFF, Halon 1211, PKP, and CO2

Question 4

Class Charlie Fire

Answer 4

Electrical.

If energized - use CO2, PKP, H20 in fog patterns with min. distance of 4 ft.

Question 5

Class Delta Fire

Answer 5

Combustible metals such as magnesium and titanium.

Use H2O in large quantities in high velocity fog from safe distance

Question 6

Noncorrosive and have an unlimited shelf life when stored in protected area.

3% and 6% approved for naval use.

Shipboard use is 6%

Answer 6

AFFF

Question 7

Colorless, faintly sweet smelling, electrically nonconductive gas that leaves no residue to clean up

Answer 7

Halon 1211

Question 8

Breaks combustion chain and does not have cooling capabilities

Answer 8

PKP