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Sprinkler System Inspection Checklist (NFPA 25)

Quarterly and annual sprinkler system inspection checklist covering control valves, water supply, sprinkler heads, piping, and flow testing per NFPA 25.

NFPA 25Sprinkler System2-8 hours30 inspection items

Control Valves and Water Supply

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    Verify all control valves are open and locked or supervised
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    Inspect OS&Y valve stem for proper thread engagement
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    Check post indicator valves for correct open position
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    Inspect fire department connection (FDC) caps and accessibility
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    Verify FDC check valve is not leaking
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    Record static and residual water pressure at riser

Sprinkler Heads

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    Visual inspection of all accessible sprinkler heads
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    Check for corrosion, paint, damage, or loading on deflectors
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    Verify correct temperature rating for location
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    Confirm 18-inch clearance below all sprinkler deflectors
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    Check for missing or detached escutcheons
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    Verify spare sprinkler head cabinet has correct quantity and types

Piping and Hangers

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    Inspect visible piping for corrosion, leaks, or mechanical damage
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    Check pipe hangers and supports for secure attachment
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    Verify proper pipe pitch for drainage
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    Inspect branch line restraints in seismic areas (if applicable)
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    Check for unauthorized modifications or obstructions
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    Inspect auxiliary drains and drum drips

Alarm and Flow Testing

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    Conduct waterflow alarm test at inspector test connection
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    Verify alarm activates within 90 seconds of flow
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    Confirm alarm signal received at central monitoring station
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    Test vane-type and pressure switch waterflow devices
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    Record flow test results (static, residual, and flow pressure)
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    Test fire pump (if applicable) per NFPA 25 Chapter 8

Dry and Pre-Action Systems (if applicable)

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    Verify air or nitrogen pressure is at correct level
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    Test low-air supervisory alarm
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    Conduct full trip test of dry valve
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    Record trip test time and water delivery time
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    Inspect air compressor or nitrogen generator
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    Check priming water level in dry valve

Use This Checklist Digitally in KomplyOS

Complete inspections on your phone, capture photos, collect signatures, and generate professional reports automatically.

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