What is the fourth requirement needed in the fire tetrahedron for flames to exist?
A. Uninhibited chain reaction
B. Uniterm-1nhibited chemical
... [Show More] reaction
C. Combustion
D. Smoke - correct answer B. Uninhibited chemical reaction
Normal oxygen content in a atmosphere is ....... %.
A. 19.5 to 22
B. 19 to 21
C. 17 to 18
13.5 to 17 - correct answer A. 19.5 to 22
A deep fat fryer fire is classified as a ...... fire.
A. Alpha
B. Bravo
C. Charlie
D.Delta - correct answer B. Bravo
Potassium Bicarbonate Powder (PKP) ......
A. breaks the combustion chain.
B. provides a cooling effect.
C. provides a smothering effect.
D. is non corrosive. - correct answer A. breaks the combustion chain.
The primary extinguishing agent for a class "B" fire is ......
A. high velocity fog.
B. AFFF.
C. CO 2.
D. PKP. - correct answer B. AFFF.
Halon extinguishes a fire by ......
A. cooling it.
B. smothering it.
C. breaking the combustion chain.
D.chemically inhibiting the flame. - correct answer D.chemically inhibiting the flame.
What fire team position delivers messages from the OSL to RPL and from RPL to OSL?
A. Team Leader
B. Messenger
C. Investigator
D. Nozzleman - correct answer B. Messenger
Which person is part of the rapid response team?
A. Plugman
B. Messenger
C. Fire marshal
D. OSL - correct answer C. Fire marshal
Portable AFFF extinguishers weigh approximately ....... pounds when
fully charged.
A. 15
B. 25
C. 28
D. 50 - correct answer C. 28
The portable AFFF extinguisher uses a stainless steel cylinder that stores ....... gallons of pre-mixed solution of AFFF concentrate and fresh water.
A. 4 1/2
B. 4
C. 3 1/2
D. 2 1/2 - correct answer D. 2 1/2
(True/False) The Number 1 Hose is laid out to the open side of the door.
A. True
B.False - correct answer A. True
When a crewmember discovers a fire, the immediate report will be made to the .......
(. Chief Engineer.
(. Executive Officer.
(. Duty Engineer.
(. Officer of the Deck. - correct answer Officer of the Deck.
Burning Phosphorus produces extremely toxic white smoke and ....... colored flames.
A. blue
B. red
C. yellow
D. black - correct answer C. yellow
Which of the following is ineffective on magnesium fires?
A. PKP.
B. Powered graphite.
C. Calcium carbonate.
D. Dry sand. - correct answer A. PKP. [Show Less]