SITUATION: When flaking the hose line, the hose flakes out of the flaking
boxes and is manually laid out behind the truck. As the hose flakes out, it
must be picked up and moved to a secure position 5 to 10 feet from the
roadway and any bends or kinks in the hose line straightened.
What is the recommended hose-laying speed?
SITUATION: The hose line is evacuated by passing the displacement ball
through the hose by air pressure. The ball receiver is placed on one end of
a 500-foot segment and the pneumatic coupler is placed on the other end.
The 250-cfm air compressor supplies pressurized air, forcing the ball
through the hose, displacing any residual water.
What is the recommended psi for hose line evacuation?
70 to 80.
80 to 90.
90 to 100.
100 to 120.