Firefighting fundamentals

Question 1

What is a firefighters primary and secondary duty?

Answer 1

Primary-save lives

secondary-stop fires

Question 2

what are the key elements of a fire?

Answer 2

oxygen,heat,fuel

Question 3

What is a fire tetrahedron?

Answer 3

The addition of a fourth element makes the triangle become a tetrahedron

Question 4

What are the four classes of fire?

Answer 4

Alpha-burning wood,ash,materials,cloth
Bravo-gasoline,jet fuel,oil & petroleum based powder
Charlie-electrical
Delta-magnesium & titanium

Question 5

Explain the extinguishing agents for 
CLASS A
CLASS B
CLASS C
CLASS D

Answer 5

CLASS A-water & AFFF
CLASS B-AFFF,pkp,halon 1211,carbon dioxide
CLASS C-Energized-CO2,Halon,PKP,& H2O in fog patterns with min. distance of 4ft
CLASS D-H2O

Question 6

What is AFFF?

Answer 6

Synthetic flourocarbon surfactant materials that are non-corrosive & have unlimited shelf life when stored in a protected area

Question 7

Explain water as a firefighting agent

Answer 7

Not considered to be a suitable agent for use in combating large aircraft fires w/o addition of other foam agents (CLASS A FIRES)

Question 8

What is HALON 1211?

Answer 8

(CLASS B &C FIRES)Colorless,faintly sweet smelling,electrically nonconductive gas that leaves no residue cleanup

Question 9

How is carbon dioxide used as a firefighting agent?

Answer 9

(CLASS B &C FIRES)Colorless,odorless gas that approx. is 1 & a half times heavier than air

Question 10

what is pkp?

Answer 10

(CLASS B FIRES) Potassium bicarbonate & dry chemical extinguishes flame by breaking combustion chain