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WorksheetsAir supplies and fire pump math
Total questions: 18
Worksheet time: 9mins
The purpose of the air maintenance device is to provide a _________ air supply to the system
Regulated and filtered
Regulated and restricted
Warm and moist
Regulated and full flow
The purpose of the fast fill valve on an air maintenance device is to ______?
Repressurise the system quickly
Allow the system to trip more quickly
Drain the system quicker
Fill the system with water when testing
One reason nitrogen is used in lieu of air is________?
It puts out the fire quicker
It’s cheaper
It helps prevent corrosion
It plugs leaks in the system piping
The “cut in” pressure on a pressure switch is when______?
The valve trips
The air compressor starts
The fire reaches the test connection
The compressors stops
When installing a tank mounted compressor with isolation pads, it’s important to______?
Torque all bolts to 90lbs
Draw the bolts tight to keep the compressor from moving
Not to draw the bolts too tight
Use a thread locking compound on all bolts
The minimum pipe size for an air supply is?
1”
Half the size of the riser pipe
1/2”
3/4”
In a differential dry valve, the regulator on the air maintenance device should set?
10 psi above the trip pressure
At 30 pounds
At 40 pounds
20 psi above the trip pressure
The air supply piping for a dry valve should be installed
Below the clapper
Above the priming water level
In the intermediate chamber
Vertical
The air supply shall repressurize the system within
30 minutes
30 minutes and 60 minutes for refrigerated spaces
20 minutes
According the manufacturers recommendations
Multiple dry systems can be maintained by a single air maintenance device
True
False
The “peak” flow of a 1000 gpm Pump should flow?
1000 gpm
3 hose streams
1500 gpm
15000 gpm
If your 1500 gpm fire pump is flowing at 40%, how many gpm’s are you flowing?
600 gpm
1900 gpm
1100 gpm
2250 gpm
If suction pressure is 45psi and discharge pressure is 162, what is the net pressure of the fire pump?
207 psi
116 psi
.443
117 psi
At pump output is rated for 100 feet of head or about?
22 psi
43 psi
75 psi
116 psi
231 psi
A pump output is rated for 150 feet of head or about?
65 psi
68 psi
346.5 psi
94 psi
The net pressure of a horizontal split case pump is 67 psi, the discharge pressure is 179 psi, what is the suction pressure?
102 psi
246 psi
43 feet of head
112 psi
The Local 669 JATC Training Director is
Charles Ketner
Brian Dunn
Kevin Watson
Brian Fischer
The end of the first quarter for WCC is?
January 1
December 31
March 1
March 31
