NFPA 25 ITM Frequency Table
Filter and sort common inspection, testing, and maintenance requirements for water-based fire protection systems
Disclaimer: Summarized in our own words. Always verify against your adopted edition of NFPA 25 and AHJ requirements. This is a quick reference only — not a substitute for the standard.
SYSTEM TYPE
FREQUENCY
COMPONENT
TASK
Showing 71 of 71 items · click a header to sort
| Component | Item | Task | Frequency ▲ | Section | Notes |
|---|---|---|---|---|---|
Sprinkler DryPreactionDeluge | Gauges (dry, preaction, deluge) | Inspection | Weekly | 5.2.4.1 | Verify normal air and water pressure and condition |
Sprinkler Dry | Air pressure (dry system) | Inspection | Weekly | 13.4.4.1.1 | Verify normal air pressure on supply and system gauges |
Valves All Systems | Control valves (sealed) | Inspection | Weekly | 13.3.2.1 | Verify in correct position and sealed |
Fire Pump Fire Pump | Pump house / pump room conditions | Inspection | Weekly | 8.2.2 | Heat ≥ 40°F (4°C) for diesel; ventilation, louvers, lighting; no leaks; gauge readings normal |
Fire Pump Fire Pump | Diesel engine fuel level and battery | Inspection | Weekly | 8.2.2(3) | Fuel ≥ 2/3 tank; batteries charged; no leaks |
Fire Pump Fire Pump | Pump packing gland leakage | Inspection | Weekly | 8.2.2(2)(g) | Approximately one drop per second from each packing gland; adjust if higher |
Fire Pump Fire Pump | Diesel pump no-flow (churn) test | Test | Weekly | 8.3.1.1 | Run at least 30 minutes each week |
Water Tank Water Storage | Tank water temperature (cold climate) | Inspection | Weekly | 9.2.4 | Verify water temperature ≥ 40°F (4°C) during freezing weather |
Sprinkler Wet | Gauges (wet pipe) | Inspection | Monthly | 5.2.4.2 | Verify good condition and normal water pressure is maintained |
Sprinkler Dry | Air compressor and pressure maintenance device | Inspection | Monthly | 13.4.4.1.1 | Verify operation and ability to restore pressure within 30 minutes |
Valves All Systems | Control valves (locked or supervised) | Inspection | Monthly | 13.3.2.1 | Verify in correct position; locked or electrically supervised |
Fire Pump Fire Pump | Electric pump no-flow (churn) test | Test | Monthly | 8.3.1.1 | Run at least 10 minutes; monitor for cavitation, overheating, pressure |
Water Tank Water Storage | Tank condition (water level, heating, catwalks) | Inspection | Monthly | 9.2.1 | More frequent where freezing is a concern |
Sprinkler Dry | Priming water level (dry pipe valve) | Test | Quarterly | 13.4.4.1.2.1 | Check the priming water level via the priming water test cock |
Sprinkler Dry | Auxiliary drains / drum drips | Inspection | Quarterly | 13.4.4.3.2 | Inspect for accumulated water; drain as needed |
Sprinkler Dry | Quick-opening device (accelerator / exhauster) | Inspection | Quarterly | 13.4.4.1.4 | Inspect to verify it is in service and the control valve is open |
Sprinkler Preaction | Preaction valve trim and enclosure | Inspection | Quarterly | 13.4.3.1.1 | Inspect trim, priming water, and enclosure heat |
Sprinkler Deluge | Deluge valve trim and enclosure | Inspection | Quarterly | 13.4.3.1.1 | Inspect trim, pilot lines, and enclosure heat |
Valves All Systems | Pressure-reducing valve (sprinkler) — partial flow | Test | Quarterly | 13.5.1.2 | Verify pressures and that valve is operating |
Sprinkler All Systems | Waterflow alarm devices | Test | Quarterly | 5.3.3 | Open inspector's test connection at the most hydraulically remote point |
Sprinkler All Systems | Supervisory signal devices (except valve) | Test | Quarterly | 13.3.3.5 | Verify signal transmission and device operation |
Standpipe Standpipe | Hose connections, caps, and gaskets | Inspection | Quarterly | 6.2.1 | Verify accessibility, condition, and identification |
Standpipe Standpipe | Hose valves | Inspection | Quarterly | 6.2.3 | Accessible, handwheel in place, not obstructed |
Standpipe Standpipe | Hose storage cabinets and Class II hose stations | Inspection | Quarterly | 6.2.1.5 | Verify hose, nozzles, and cabinet condition |
FDC All Systems | Fire Department Connection — visual inspection | Inspection | Quarterly | 13.7.1 | Visible, accessible, couplings/swivels OK, plugs/caps in place, gaskets intact, identification sign present, check valve not leaking, drain (clapper) functional, interior free of obstructions |
Water Tank Water Storage | Tank water level signal device | Test | Quarterly | 9.3.4 | Verify high and low water level alarm operation |
Sprinkler Preaction | Detection devices (smoke/heat) — preaction | Test | Semiannual | 13.4.3.2.4 | Per NFPA 72; coordinate with detection ITM program |
Valves All Systems | Valve supervisory (tamper) switches | Test | Semiannual | 13.3.3.5 | Verify signal within first two revolutions or before valve travels 1/5 from normal position |
Sprinkler All Systems | Sprinklers and piping (floor-level inspection) | Inspection | Annual | 5.2.1 | Inspect from floor for leaks, corrosion, paint, obstruction, misalignment, loading |
Sprinkler All Systems | Pipe hangers and seismic bracing | Inspection | Annual | 5.2.3 | Inspect after any seismic event for damage or missing components |
Sprinkler All Systems | Spare sprinkler cabinet stock | Inspection | Annual | 5.2.1.3 | Verify minimum spare count, all types present, listed wrench |
Sprinkler Wet | Antifreeze solution | Test | Annual | 5.3.4 | Before onset of freezing weather; replace premix when required |
Sprinkler Dry | Auxiliary drains / drum drips — drain | Maintenance | Annual | 13.4.4.3 | Drain before onset of freezing weather and after each trip test |
Sprinkler Dry | Quick-opening device (QOD) operation test | Test | Annual | 13.4.4.1.4.2 | Tested at the same interval as the dry pipe valve trip test |
Sprinkler Dry | Dry pipe valve trip test (partial flow) | Test | Annual | 13.4.4.2.2 | Warm weather; measure trip time from inspector's test connection |
Sprinkler Dry | Dry pipe valve internal inspection | Inspection | Annual | 13.4.4.2.1 | Performed in conjunction with annual trip test |
Sprinkler Dry | Low-point drains (dry systems) | Maintenance | Annual | 13.4.4.3 | Drain before onset of freezing weather |
Sprinkler Preaction | Preaction valve internal inspection | Inspection | Annual | 13.4.3.1.2 | Performed during annual trip test |
Sprinkler Preaction | Preaction valve trip test | Test | Annual | 13.4.3.2 | Trip the detection circuit and verify valve operation |
Sprinkler Deluge | Deluge valve internal inspection | Inspection | Annual | 13.4.3.1.2 | Performed during annual trip test |
Sprinkler Deluge | Deluge valve trip test | Test | Annual | 13.4.3.2 | Trip the release and verify all open nozzles flow |
Sprinkler Deluge | Open nozzles (deluge) | Inspection | Annual | 5.2.1.2 | Inspect each open nozzle for damage, corrosion, and obstruction |
Valves All Systems | PIV (post indicator valve) operation | Maintenance | Annual | 13.3.3.1 | Operate through full range and return to normal position |
Valves All Systems | Backflow preventer forward flow test | Test | Annual | 13.6.2.1 | Flow at system demand; RPZ also requires annual internal inspection |
Sprinkler All Systems | Main drain test (at each riser) | Test | Annual | 13.2.5 | Verify water supply condition; compare to baseline |
Standpipe Standpipe | Pressure-regulating devices (partial flow) | Test | Annual | 6.3.2.1 | Verify proper static and residual pressures annually |
Fire Pump Fire Pump | Annual fire pump flow test | Test | Annual | 8.3.3 | Minimum 0%, 100%, 150% of rated flow; compare to acceptance curve |
Fire Pump Fire Pump | Suction screen / strainer cleaning | Maintenance | Annual | 8.3.3.5 | After each annual flow test or after any obstruction event |
Fire Pump Fire Pump | Transfer switch (ATS) test | Test | Annual | 8.3.2.7 | Coincide with annual pump flow test; verify transfer in both directions |
Fire Pump Fire Pump | Diesel engine batteries — load test / replacement | Maintenance | Annual | 8.5 Table | Replace at manufacturer interval; load test annually |
Water Tank Water Storage | Tank exterior painted surfaces | Maintenance | Annual | 9.2.5 | Inspect and recoat as needed to prevent corrosion |
Private Hydrant All Systems | Hydrant inspection | Inspection | Annual | 7.2.2.4 | After each operation and at least annually |
Private Hydrant All Systems | Hydrant flow test and lubrication | Maintenance | Annual | 7.3.2 | Operate through full range, lubricate, flush |
Sprinkler Dry | Dry pipe valve full-flow trip test | Test | 3-Year | 13.4.4.2.2.1 | Full-flow with control valve fully open |
Sprinkler Dry | Air leak rate / pneumatic test | Test | 3-Year | 13.4.4.2.6 | System shall not lose more than 1.5 psi in 2 hours |
Sprinkler Preaction | Preaction valve full-flow trip test | Test | 3-Year | 13.4.3.2.2 | Full-flow with control valve fully open |
Sprinkler Deluge | Deluge valve full-flow trip test | Test | 3-Year | 13.4.3.2.2 | Full-flow with control valve fully open |
Water Tank Water Storage | Tank interior (drained inspection) | Inspection | 3-Year | 9.2.6 | Every 5 years for tanks without cathodic protection; every 3 years for steel without corrosion protection |
Sprinkler All Systems | Dry sidewall and extra-high-temp sprinkler sample test | Test | 5-Year | 5.3.1.1 | More frequent sampling than standard-response heads |
Sprinkler Wet | Alarm check valve — internal inspection | Inspection | 5-Year | 13.4.1.2 | Internal parts clean, moving freely, no obstruction |
Sprinkler Wet | Alarm check valve — strainers/filters/restricted orifices | Maintenance | 5-Year | 13.4.1.3 | Internal cleaning at the same interval as the valve |
Valves All Systems | Check valve internal inspection | Inspection | 5-Year | 13.4.2.1 | Internal parts clean, moving freely, in good condition |
Valves All Systems | Pressure-reducing valve (sprinkler) — full flow | Test | 5-Year | 13.5.1.2.1 | Full-flow performance test |
Standpipe Standpipe | Standpipe flow test | Test | 5-Year | 6.3.1 | Verify required flow and pressure at hydraulically remote connection |
Standpipe Standpipe | Pressure-regulating devices (full flow) | Test | 5-Year | 6.3.2 | Verify outlet pressure; recalibrate or replace as needed |
Standpipe Standpipe | Hydrostatic test (dry, semi-auto, manual) | Test | 5-Year | 6.3.3 | 200 psi for 2 hours, or 50 psi above maximum pressure |
Standpipe Standpipe | Class II occupant-use hose service test | Test | 5-Year | 6.3.5 | Hydrostatic test of fire hose per NFPA 1962 |
FDC All Systems | FDC internal inspection (after testing) | Inspection | 5-Year | 13.7.2 | Hose threads checked; clapper inspected; piping back-flushed if needed |
Water Supply All Systems | Private fire service main flow test | Test | 5-Year | 7.3.1 | Flow at hydrant or other approved outlet |
Sprinkler All Systems | Fast-response sprinkler sample test | Test | 20-Year | 5.3.1.1 | Test or replace at 20 years, then every 10 years |
Sprinkler All Systems | Standard-response sprinkler sample test | Test | 50-Year | 5.3.1.1 | Test or replace at 50 years, then every 10 years |