As part of acceptance testing for a fire pump we test the installed pump net pressures at various flows (churn, 100%, 150%) and compare that against the factory certified curve for that specific fire pump.
For these tests, what is the pass/fail threshold? What would fail this test, and how far off could the installed pump be to fail this test? As I understand it, the installed fire pump cannot differ from the factory certified curve more than the error in the measurement equipment (the allowed error in gauges, typically 1% of the gauge reading). I'm not sure if that's the proper way to go about it, but was curious if there's a better pass/fail mark I should be looking for with these tests. Submitted anonymously and posted for discussion. Discuss This | Submit Your Question | Subscribe
3 Comments
Dan Wilder
10/20/2020 08:22:25 am
There are some additional caveats but 8.3.7.2 gives you all the criteria for pass/fail requirements.
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Franck
10/20/2020 12:27:49 pm
Dan’s answer is perfect
Reply
Jose Cruz
10/20/2020 05:18:35 pm
Another factor for variation is the turbulent flow at the discharge of the flow meter, while measuring at 150%, it is hard to get the curve value.
Reply
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