Ch11 operating fire pumps Flashcards
Once the driver/operator does exit the cab, the next step, in all cases except when apparatus is used for pump-n-roll-operations, should be to?
chock the apparatus wheels
the procedure for making the pump operational varies depending on the blank and the blank?
type of pump drive, manufactuerer of the apparatus
midship pumps require that both the blank and blank be in gear for operation
pump, drive transmission
of the three possible types of water supply for the fire pump, most drivers operate solely from the blank at the vast majority of incidents
onboard water tank
when using 2.5 inch or 3 inch hoselines t supply the pumper directly off hydrant pressure, it is recommended that the lines be no longer than blank feet
300
the maximum amount of vacuum that most pumps develop is approximately blank inches of mercury
22
blank can be described as that condition where, in theory, water is being discharged from the pump faster than it is coming in
cavitation
cavitation often results when a pump has been equipped with inadequate piping from the blank
water tank
The first consideration in establishing a successful drating operation is?
selecting the site
The most important factor in the choice of the draft site is the ?
amount of water available
Water that is below blank degrees or above blank degrees may adversely impact the pump’s ability to reach capacity
35, 90
At 20 feet of lift, the amount of water that can be supplied is only about blank percent of the rated capacity of the pump
60
if a blank type intake valve is normally connected to the pump intake, it is SOP in some departments to remove it before connecting the intake hose to the apparatus
butterfly
The entire priming action typically requires blank to blank seconds from start to finish, but when using no more than 20 feet of hard intake hose lifting a maximum of 10 vertical feet it should not take more than 30 seconds(45 seconds in pumps larger than 1,250 gpm) to accomplish
10-15
