10. Operating The Fire Pump Flashcards
Notes
Reach the proper pressure only when water is flowing.
Elevation pressure atmospheric pressure maximum of 14.7 psi
Do you not use pump discharge pressures in excess of 185 for standpipe system
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Driver operator should maintain a residual pressure of at least __ PSI on their master intake gauge at all times during pump in operations. Water supply systems must maintain a residual pressure of at least __ psi within their mains for several reasons.
20
20
Additional water available from the hydrant
Percentage method
first digit method
square the lines method
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To use the percentage method, first calculate the drop in pressure as a percentage.
% drop=
% drop = (static -residual) (100)
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static
In order for a pumper to approach it’s rated capacity using a traditional strainer, there must be at least __ inches of water over the strainer.
24 inches
To create an effective fire stream, a lift of no greater than __ feet is recommended.
20 ft
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Operating from draft is demanding for the apparatus and driver operator alike. This operation requires diligent monitoring of the gauges associated with the pump as well as the engine. The engine temperature gauge must be kept within the normal operating range, using the___
Auxiliary cooler
If no specific information is available, the general guideline is to discharge __ psi into the FDC.
150 psi
Add approximately __ psi for each floor above the fire department connection that will have operating fire streams.
5 psi
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Many manual standpipe systems are designed to be pumped at a pressure of __ psi at the FDC.
150 psi
