🚒 Fire Ground Op

Question 1

Making Pump Ready

12 Steps

Answer 1

• Water Tank Full
• Tank Valve Open
• Small Line Valve Open
• Pump Fully Primed
• All Intake Valves Closed
• Relief Valve Preset at 160PSI
• Drain Valves on Intake Open
• Drain Valves on Discharge Gates Closed
• Auxillary Cooling Valves Open
• Priming Pump Oil Tank Filled(Vent Hole Clear)
• Tank Filled Valve Closed
• Blind Caps Hand Tight

Question 2

Proper leakage rate for pump packings

Answer 2

10-20 drops per minute when operating at 100PSI

If rate is less pump will overheat
If rate is more it will make priming the pump difficult

Question 3

The series-parallel pump will operate more efficiently in the pressure position when it is supplying small quantities of water,

Answer 3

As the desired pressure will be developed at a lower engine speed

Question 4

Engine pressure for sprinkler systems______ unless otherwise ordered

Answer 4

125psi

Question 5

Engine pressure for combination sprinkler/standpipe systems

Answer 5

175psi

Question 6

Two pump operation is written so that a pressure of

Answer 6

125 psi is used by the pumper at the source of supply (150psi when supplying the hydrant valve)

Question 7

Hose is tested at

Answer 7

200psi

Question 8

Pump operators in a relayed line of more than two pumped with the exception of the operator of the pump nearest the fire:

Answer 8

Shall calculate their pump pressure using the relay formula

Engine Pressure=20+Friction Loss+/-Elevation