NFPA 20 covers the installation, testing, and maintenance of stationary fire pump systems. Fire pumps are the heart of high-rise, large-area, and high-hazard fire sprinkler systems — when the sprinkler system activates, the fire pump must start and deliver rated flow at rated pressure. A fire pump that fails to perform means the sprinkler system cannot deliver adequate water to control the fire.
We audit fire pump testing and maintenance records against NFPA 20 and NFPA 25 requirements, verify test documentation completeness, and identify gaps in your fire pump compliance program.
What NFPA 20 Covers
NFPA 20 covers the selection, installation, and maintenance of fire pump systems including electric-driven pumps, diesel engine-driven pumps, jockey pumps, and controllers. The standard specifies performance requirements, installation standards, and acceptance testing procedures. Ongoing testing and maintenance requirements are cross-referenced with NFPA 25 Chapter 8.
Fire Pump Testing Requirements
Fire pumps require weekly no-flow (churn) tests to verify automatic starting and system pressure maintenance. Annual flow tests must verify the pump delivers rated flow at rated pressure — the test must plot the pump curve and compare it to the original acceptance test curve. Any degradation in performance must be documented and investigated.
The Fire Pump That Could Not Deliver Rated Flow
A high-rise commercial building had a fire pump that passed weekly churn tests for years — it started automatically and maintained system pressure. During a required annual flow test, the pump could only deliver 78% of rated flow at rated pressure. The impeller had degraded over time, and no flow test had been performed in three years despite NFPA 25 requiring annual testing.
Result: The fire marshal cited the building for non-compliance with NFPA 20 and NFPA 25. The sprinkler system was operating at reduced capacity — unable to deliver design flow rates if activated. The pump required impeller replacement and the building had to demonstrate restored performance through a new flow test. Insurance was notified and required documentation of the repair and testing.
Weekly churn tests verify that the pump starts. Only annual flow tests verify that the pump can actually deliver water at the rate the sprinkler system was designed to demand. Without flow testing, pump degradation goes undetected until a fire event or a compliance inspection.
How We Help
We audit your facility against the specific requirements of this standard, identify every documentation and system gap, and build the compliance program that proves ongoing compliance at every inspection cycle.