Foam Flashcards
How does foam extinguish a fire
Diluting Isolating Forming Intercepting Cooling
How can foam concentrates be classified
Low expansion 2:1 20:1
Medium expansion 20:1 200:1
High expansion 200:1 20001:
What does ARFFP stand for
Alcohol Resistant Film Forming Flouroprotien
What are the two types of concentration and what are they used for
3% - hydrocarbons.
6% - fires involving polar solvents
What can be varied when producing foam
Volume of air mixed with volume of solution.
Quantity of concentrate added.
Size of bubbles.
What does the effectiveness of foam depend on.
Concentrate in good condition.
Correct mixture of concentrate used.
Good maintenance of equipment.
Correct pump pressure used for equipment.
What are the types of application methods
Gentle application
Raindown
Roll on
Off wall - indirect.
Hi Ex foam hazards
Claustrophobia
Disorientation
Severely affected light penetration
Limited audibility of speech/ADSU/whistles
Mini backdraught
Difficult to determine travel and location of fire
Difficult to spot surrounding damage to structure.
How much foam is carried on a BFU
8x1000l IBC low ex foam
1x1000l IBC high ex foam
1x Turbex MkII.
What is the capacity of the on-board tank, and what is it filled to.
127L
90L
What controls the induction rate
Proportioner.
