Extinguishing agents and Systems

The most common extinguishing agents used in ARFF vehicles are:

• Water, Foam & Dry Chemical

• Water, CO2 & Foam

• Water, Foam & Nitrogen

• Water, AFFF & Dry Chemical

There are different types of _______ and _______foam proportioning devices commonly found in portable and apparatus-mounted applications.

• Large & Small

• High energy & Low energy

• High pressure & Low pressure

• High temperature and Low temperature

which of the following is a method of foam proportioning?

• Conduction

• Induction

• Convection

• Radiation

A Disadvantage of batch mixing is....?

• All water onboard the apparatus is converted to foam

• Need a separate foam pump with power take-off(PTO) or other power source

• No recirculation back to foam concentrate tank

• Foam concentrate flow and pressure match system demand

Examples of induction devices are....?

• In-line eductors and foam-nozzle eductors

• Skid-mounted multiagent units and wheeled extinguishers

• Roof turret and bumper turret

• Pre-connected hoseline and Controlled branch

What is the disadvantage of around the pump proportioning system?

• Need for a separate foam pump with power take-off (PTO) or other power source

• The foam injection point must be within the piping before any manifolds or distribution to multiple fire pump discharges.

• Pump must be dedicated solely to foam operation. It does not allow plain water and foam to be discharged from the pump at the same time

• Maintained in a ready-to-pump condition and requires no flushing after use

From the following what is an apparatus mounted foam proportioning system?

• Around the pump proportioners

• Foam nozzle eductors

• Skid-mounted multiagent units

• Roof and bumper turret

Premix method is used in....?

• Apparatus water tank

• Dry chemical tank

• Portable Extinguishers

• Foam Concentrate tank

______________ devices are permanently mounted to the apparatus and are designed to meet the foam application rates required at aircraft fires.

• Handline nozzle

• Roof and bumper mounted

• Mast-light

• Self-educting master stream nozzle

What is the ICAO requirement of dry chemical for CAT-10 airport?

• 45 kg

• 450 kg

• 250 kg

• 400 kg