NFPA 20 requirement 1

Weekly no-flow (churn) test: 10 minutes (electric) or 30 minutes (diesel)

NFPA 20 requirement 2

Annual flow test at churn, 100% rated capacity, and 150% rated capacity

NFPA 20 requirement 3

Annual transfer switch test under load

NFPA 20 requirement 4

Annual controller inspection (contacts, wiring, battery)

NFPA 20 requirement 5

Suction gauge reading verified against the certified pump curve

NFPA 20 requirement 6

Diesel driver: weekly coolant/oil/fuel checks; annual fuel quality test

Code reference · Weekly + Annual

NFPA 20

Fire Pumps

NFPA 20 governs the installation of stationary pumps for fire protection — the pumps that deliver water pressure when the city main cannot. While NFPA 20 is primarily an installation standard, its testing requirements are referenced by NFPA 25 and are among the most high-stakes inspections in the industry. A failed fire pump test often means an immediate impairment plan and AHJ notification.

Key requirements

1
Weekly no-flow (churn) test: 10 minutes (electric) or 30 minutes (diesel)
2
Annual flow test at churn, 100% rated capacity, and 150% rated capacity
3
Annual transfer switch test under load
4
Annual controller inspection (contacts, wiring, battery)
5
Suction gauge reading verified against the certified pump curve
6
Diesel driver: weekly coolant/oil/fuel checks; annual fuel quality test

Official source

NFPA 20 — view at NFPA.org →

Reference only

Published summary for informational use. Fire code adoption varies by jurisdiction and edition. Verify current enforced codes with your local Authority Having Jurisdiction (AHJ) and consult a licensed fire protection contractor before taking action. Not legal or professional advice.