Chapter 10 Quiz Flashcards
Most apparatus are designed so that the procedure for making the pump operational is performed entirely from
The cab of the vehicle
If a pump Is equipped with a ________ it can be open and set to circulator water back into the tank. This action provide some amount of cooling without wasting any water
Circulator bypass or booster cooling valve valve
What residual pressure should be maintained on the master intake gauge during prime in operations when operating from a pressurized supply source
20 psi
When the pumper is discharging water the intake gauge displays the
Residual pressure
There are a number of indicators that the pump is cavitating
The pressure gauge on the pump will fluctuate and hose streams may pulsate creating a distinctive popping or sputtering sound
The pump itself might make noises described as sounding like gravel passing through the pump
The entire priming action typically requires 10 to 15 seconds from start to finish. However when up to 20 feet of intake hose lifting a maximum of 10 feet it may take as long as 30 seconds 45 seconds and pumps larger than 1250gpm to accomplish this.
If a prime has not been achieved in this time. The prime in a temp should be stopped and the problem traced
The most common inability to prime is an _____ that prevents the primer from developing enough vacuum to successfully draft water
Air leak
Depending on the policies of a jurisdiction to suggest a discharge pressure maybe printed on a
FDC or contained in preincident planning information
However, if the draft is being established to supply water tenders for a shuttle operation, there may be several options.
Amount of water
Type or quality of water
Accessibility of water