Evolution 6 Resupply Foam System

Question 1

What size line shall be connected to the rear inlet of the foam carrier to be supplied?

Answer 1

2.1

Connect a 1¾” line to the rear inlet of the foam carrier.

Question 2

Sufficient 1¾” hose is stretched to Designated Foam Assembly Point. Connect the 1¾” hose line into what side of the manifold?

Answer 2

2.2
The inlet side of the Mini Manifold. The Mini Manifold now has three outlets for supply. NOTE: The Mini Manifold is used in reverse.

Question 3

Connect the additional Foam Carriers or Foam Tender, acting as Nurse Trucks, as they arrive into the Mini Manifold with what size hose?

Answer 3

2.3

1¾” hose lines.

Question 4

As foam is pumped out of the original Foam Carrier or Foam Tender attached to the FIMM pumper, one Nurse Truck will re-supply it at a time. One valve on the Mini Manifold is opened at a time. The radio-equipped member on top of the original Foam Carrier will open and close the valve on the foam inlet as necessary to keep a sufficient flow without causing what to happen to the foam concentrate?

Answer 4

2.4

Frothing.

Question 5

When each Nurse Truck is depleted, the valve on the Mini Manifold is closed, the 1¾” hose line is disconnected at the pumper and the Foam Carrier or Foam Tender has finished its function. A second Foam Carrier or the Foam Tender (Nurse Truck) will open the valve on the Mini Manifold and supply the foam inlet in the supply tank of the original unit. Another Foam Carrier or the Foam Tender will take the place of the unit that was emptied and removed. The New Foam Carrier of Foam Tender will stretch a 1 3/4” hose line to the manifold.
True or False

Answer 5

2.5, 2.6, 2.7
False
The 1¾” hose line left by the empty Foam Carrier or Foam Tender will then be connected to the newly arrived Nurse Truck.

Question 6

What Apparatus should be used as the original Foam Carrier if possible?

Answer 6

2.9
The Foam Tender should be used as the original Foam Carrier if possible. The Foam Tender has three 1000-gallons tanks that will last much longer than the 1000-gallon booster tank of the Carriers. If for any reason there is an interruption in the supply of concentrate, (burst length, delay in changing carriers etc.) there is 3000 gallons of concentrate available as opposed to 1000 gallons.

Question 7

The foam concentrate should be delivered to the FIMM pumper at a pressure that is
__ PSI above hydrant pressure. This will allow the foam to be injected into the water stream.
Fill in the blank

Answer 7

2.10
50 psi
If the Nurse Trucks are downhill of the operation and/or the stretch is long, 50 PSI over hydrant pressure may not be enough to overcome the backpressure. Adjust the pressure accordingly.

Question 8

There may be long distances between the Staging Area, the Foam Assembly Point and the FIMM pumper. Good communications are essential. What should be utilized for the foam delivery system?

Answer 8

2.12

A separate radio frequency should be utilized for the foam delivery system.