18 Questions
What is the recommended application rate for Class A foam using Air Aspirating Nozzle (PRO/Pak low and medium nozzles)?
0.1%
What is the operating range of Class A foam?
0.1%
What should be considered when operating the inline eductor?
Maximum hose lengths
At what percentage range will older Class B Foam be, compared to newer Class B Foam?
3-6%
What is the maximum shelf life of CFD foam when left in sealed containers?
Nearly unlimited
In what situations should Class A Foam be used?
House fire overhaul
In foam operations, what is the most common cause of eductor failure?
Kinks in the hose line
What is the recommended application rate for hydrocarbons like gasoline or diesel in foam operations?
3%
Which nozzle should be used with a 95 GPM eductor?
SM20-FLP
What is the minimum pressure required at the eductor?
40 PSI
What type of materials fall under Class A use for foam operations?
Mop-up and overhaul operations
Which percentage knob setting is recommended for Class B use involving hydrocarbons?
3%
What is the maximum pressure at the PRO/Pak control unit?
100 PSI
What should be done to clean the foam system after use?
Remove the nozzle and hose from the unit
What happens if there is too much hose between the eductor and the nozzle?
It causes excessive back pressure in the foam system
Why do hydrocarbons not mix with water in foam operations?
They are lighter than water and float on top
What type of material would require a 6% application rate in foam operations?
Alcohol base
What is the recommended maximum hose length between the 125 GPM eductor and the nozzle?
200 feet
Test your knowledge of foam operation and equipment with this quiz covering classifications of foam concentrates, operating pressures and flow rates for the PRO/Pak, cleaning procedures, and the differences between polar solvents and hydrocarbons. Learn about the dangers of mixing different types of foam concentrate and basic foam operation.
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