The capacity of municipal waterworks, according to NFPA 13 (5.2.2.2), is measured with a fire hydrant flow test and presented as a water supply curve. A flow test is conducted using at least two fire hydrants ; a pressure gauge is affixed to one, and the other is opened to flow water.
First, locate your pump performance curve and system curve and identify your operating point. The pump manufacturer will give you the pump curve, but your system curve is determined by you. It represents the flow rate variation relative to the …
How are pump curves generated? – Inspect Point Help Desk
Users, if the information is available, will see up to three curves generate, automatically, on annual fire pump inspection reports: Current year curve- driven off the flow test results collected during the annual fire pump inspection. This information can only be added in the field during the inspection. Manufacturer curve – driven off of the fire pump information section. This …
Then, you can scale it up and assign , 300 gpm, or , 600… This is best if you want to insert your company logo, sheet it up on 8.5×11, assign blocks for the test data, date, etc. I’ve also worked with excel, but even with the semi-log plot function I could never get the results to plot a straight line.
People Also Ask how to generate pump curves from fire hydrant tests
What are firepump performance curves?
Fire pump performance curves represent fire pump performance in a variety of situations. These curves show how much pressure a pump produces at a given flow rate and include, at a minimum, these three data points: Churn pressure (pressure when the pump is running, but no water is flowing)
How do you test a fire hydrant flow?
A flow test is conducted using at least two fire hydrants; a pressure gauge is affixed to one, and the other is opened to flow water. Because pressure and flow are interrelated, two data points are required: static pressure (with no flow) and residual pressure (with the flow hydrant open wide).
What do the pressure curves on the pump mean?
These curves show how much pressure a pump produces at a given flow rate and include, at a minimum, these three data points: Churn pressure (pressure when the pump is running, but no water is flowing)
How much pressure does a fire pump produce?
Every fire pump is rated for a particular flow rate and corresponding pressure. For instance, a pump might be rated to produce 200 GPM at 170 PSI. However, the actual flow rate a pump experiences can vary. For example, the flow rate can be very high if many fire sprinklers activate during a fire.
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How to read pump curves Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher