AFFF STATION UPDATED ACTUAL EXAM QUESTIONS And CORRECT Answers

AFFF STATION UPDATED ACTUAL EXAM
QUESTIONS And CORRECT Answers
AFF extinguisher

-weight

-range

-duration

-mixture

-pressure & temp

-expansion - CORRECT ANSWERS 28 lbs

15 ft

55-65 sec

2.5 gal

100 psi, 70F

6.5/1



AFF in line educator

-pressure/%discharge

-rigging ↑↔↓

-dist from fireplug to eductor - CORRECT ANSWERS 100 psi+ for 6% foam discharge

↑/↔ 3 lengths 150'

↓ 6 lengths 300'

<50' hose



AFFF firefighting characteristics - CORRECT ANSWERS Mixes with water to form an
aqueous film which excludes oxygen from the surface of the fuel

, Cools due to water content

Excellent penetrating characteristics / superior to water on class "a" fires



AFFF discharge - CORRECT ANSWERS <3 nm from land - no overboard discharge

3 - 12 nm from land - discharge permitted if ship speed is 10 kts or higher

>12 nm from land - discharge as required



AFFF color coding - CORRECT ANSWERS Fire main-red

Afff concentrate-striped light blue/red

Afff foam discharge-striped red/green



AFFF hose - CORRECT ANSWERS 125' non collapsible rubber hose with 1-1/2 inch vari
nozzle



Hycheck valve - CORRECT ANSWERS Allows flow of seawater from firemain to mix with
AFFF concentrate



Powercheck valve - CORRECT ANSWERS Allows AFFF from pump to mix with seawater.
Prevents seawater contamination in AFFF tank



Ratio controller - CORRECT ANSWERS Mixes AFFF concentrate and firemain to produce
finished foam



Balancing valve - CORRECT ANSWERS Maintain equal afff concentrate and firemain
pressures

Has diaphragm opens/closes

Sea sensing line