Agent Discharge Time and Nozzle Sizing Calculator

Calculate clean agent discharge time and nozzle requirements per NFPA 2001 discharge time limits

Input Parameters

Results

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Estimated Discharge Time
sec
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Required Flow Rate
lb/sec
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Flow Per Nozzle
lb/sec
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Max Allowed Discharge Time
sec
Note: Discharge time is measured from initial agent release to 95% of design concentration. Halocarbon agents require rapid 10-second discharge per NFPA 2001. Inert gases are allowed 60 seconds due to larger volumes.

Reference

NFPA 2001 Discharge Time Requirements: Halocarbon agents (FM-200, Novec 1230): ≤ 10 seconds Inert gas agents (IG-541, IG-55, IG-100): ≤ 60 seconds CO₂ total flooding: ≤ 60 seconds (NFPA 12) Nozzle sizing must ensure uniform distribution Pipe sizing per manufacturer hydraulic calculations