Fire Pump Flow Testing (NFPA 25) in Dubai
The NFPA 25 annual flow test runs the fire pump at three points — churn (no-flow), 100% rated flow and 150% of rated flow — while recording suction pressure, discharge pressure and flow rate with calibrated instruments. The readings are plotted against the pump's original acceptance-test curve to confirm performance has not degraded. QSERV carries out this test in-house for Dubai buildings and produces a documented report for DCD certificate renewal.
DCD-approved · 12+ years in Dubai fire safety · Hassantuk-integrated · 18,000+ customers served
A pump that starts can still fail the fire
Weekly and monthly runs only prove the pump turns and holds pressure. They say nothing about whether it can still push its designed volume of water to every sprinkler head at the top of the riser. Wear, blockage and impeller degradation are invisible until the pump is loaded — and a fire is the worst time to discover it.
- No-flow running never loads the pump or exposes wear.
- Impeller and bearing wear only show under full flow.
- A pump below curve cannot supply the highest sprinklers.
- DCD treats an under-performing pump as a failed pump.
- The annual flow test is the only proof of real capacity.
Three flow points, calibrated, recorded
NFPA 25 defines the test precisely. QSERV runs the pump at churn, 100% and 150% of rated flow, taking suction and discharge pressures and flow at each point with calibrated gauges and a flow-measuring device — not estimates. The engine or motor is watched throughout for start time, running parameters and any distress.
- Churn (no-flow) reading to confirm shut-off pressure.
- 100% rated flow with recorded suction and discharge.
- 150% rated flow to confirm the pump holds capacity.
- Calibrated gauges and flow device on every visit.
- Diesel start time and running parameters logged.
Plotted against the curve, ready for DCD
Numbers on their own prove nothing. QSERV plots the three test points against the pump's original acceptance-test curve so any drift is visible at a glance, flags deviations beyond tolerance, and issues a signed report you can submit as part of your Civil Defence certificate renewal.
- Results plotted against the original acceptance curve.
- Deviation beyond tolerance flagged with a recommendation.
- Signed, dated report suitable for DCD submission.
- Early warning when a pump nears end of serviceable life.
- Findings fed back into your maintenance logbook.
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Frequently Asked Questions
Answers for facility managers and building owners preparing for the annual fire pump flow test in Dubai.
How often is a fire pump flow test required in Dubai?
NFPA 25, adopted by Dubai Civil Defence, requires a full flow performance test annually. This is in addition to weekly condition checks and monthly no-flow run tests. The annual results are submitted as part of the Civil Defence certificate renewal.
What are the three points in a fire pump flow test?
The pump is tested at churn (no-flow, to confirm shut-off pressure), at 100% of rated flow, and at 150% of rated flow. Suction pressure, discharge pressure and flow rate are recorded at each point and plotted against the acceptance curve.
What does it mean if the pump falls below its curve?
A pump that cannot meet its rated flow at rated pressure has degraded — commonly through impeller wear, bearing wear or a suction restriction. It is treated as a failed pump and requires investigation and rectification before it will pass a DCD compliance check.
Why do you use calibrated gauges instead of the panel readout?
Fixed pump-room gauges drift over time and are not traceable. NFPA 25 testing requires calibrated instruments so the recorded figures are defensible. QSERV brings calibrated gauges and a flow-measuring device to every annual test.
Can the test be done without draining water everywhere?
Yes. Flow is measured through a test header, flow meter loop or metered hose arrangement so water is discharged in a controlled way. QSERV plans the discharge route in advance to avoid disruption to the building.
Does QSERV subcontract the flow test?
No. QSERV is a DCD-approved contractor operating since 2013 with in-house engineers and no subcontracting. The same team that maintains your pump room carries out the annual flow test and issues the report.