Chapter 10 - Operating Fire Pumps Flashcards
Which of the following is used to prevent the pump from overheating during fire attack if water is not flowing for an extended period of time?
Booster cooling valve
page 338
An inability to prime is most likely caused by:
insufficient fluid in the priming reservoir.
page 359
For most apparatus, from what location is the procedure for making the pump operational performed?
Cab of the vehicle
page 336
One indication that a pump is cavitating is that:
the pump itself may make noises described as sounding like gravel passing through the pump.
page 354
What should be done if priming has not been achieved within the acceptable time period for a particular situation?
Priming attempt should be stopped and the problem traced
page 359
When is residual pressure shown on the intake gauge of a pumper that is connected to a hydrant?
When a pumper is discharging water
page 347
Which of the following standpipe systems must be charged wtih water from a source such as the fire department pumper?
Dry pipe systems
page 364
What residual pressure should be maintained on the master intake gauge during pumping operations when operating from a pressurized supply source?
At least 20 psi (140 kPa)
page 340
Where is a driver/operator most likely to find suggested discharge pressures for a sprinkler system?
Printed on a plate at the FDC
page 363
During drafting operations, the ability to overcome losses in pressure is limited to:
atmospheric pressure at sea level
page 352
If discharge flow volume is increased too much when operating from a pressurized water source intake pressure from the supply source may be:
reduced to a point that may damage the pump
page 339
When shutting down a drafting operation, why should the positive displacement primer be operated for several seconds until primer oil or fluid comes out of discharge from the priming pump?
Aids in lubrication of priming pump
page 362
When a dry standpipe system is charged, water will be discharged at all points where:
caps are off and valve is open.
page 365
In general, pumps supplying a relay operation or master stream are used to supply large amounts of water, and therefore require:
use of a parallel (volume) setting of the transfer valve
page 346
What is most likely the problem during drafting if the discharge pressure gauge begins to fluctuate with a corresponding loss of vacuum on the intake gauge?
Air is coming into the pump along with water
page 360
