For facility managers, fire safety engineers, and maintenance professionals, monthly no-flow fire pump testing is a crucial step in ensuring fire protection systems remain reliable and compliant. Regular testing not only ensures the pump is operational in emergencies but also meets the inspection, testing, and maintenance (ITM) standards set by NFPA 25.
A no-flow (churn) test is a monthly operational test that runs the fire pump without flowing water. This test checks the starting, operation, and system pressure performance of the pump under static conditions. Unlike an annual flow test, water is not discharged during this test.
✅ Ensures Pump Readiness – Confirms the pump motor or engine starts and runs smoothly.
✅ Detects Mechanical Issues – Identifies abnormal noises, vibrations, or overheating.
✅ Complies with NFPA 25 – Monthly tests are required under NFPA 25: Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems.
✅ Reduces Downtime – Early detection of issues can prevent costly failures during real emergencies.
According to NFPA 25, the following applies:
Frequency: Monthly
Duration: Run pump for at least 10 minutes
Record Keeping: Log suction/discharge pressure, RPM, voltage, and amperage
Observation: Ensure automatic start, no leaks, and stable pressure readings
Notify building occupants and local authorities, if necessary.
Check system status to ensure it's ready for testing.
Start pump automatically via pressure drop (if applicable) or manually.
Monitor and record pressure readings, electrical values, and any unusual conditions.
Shut down the pump and verify automatic return to standby.
Log all findings in maintenance records for compliance and future reference.
