High Pressure CO₂ System Calculator

Calculate high pressure CO₂ system cylinder requirements and piping per NFPA 12 for total flooding

Input Parameters

Results

--
CO₂ Required
lb
--
Cylinders Required
--
Total Cylinder Weight
lb
--
Reserve Supply (100%)
lb
Note: CO₂ is lethal at fire extinguishing concentrations (34%+). Pre-discharge alarms, time delays, and lockout provisions are mandatory per NFPA 12. Never use CO₂ total flooding in normally occupied spaces without proper safeguards.

Reference

NFPA 12 Carbon Dioxide Extinguishing Systems High Pressure Storage: 850 psi at 70°F Total Flooding: W = (V / kb) × (C / (100-C)) kb = 14.3 ft³/lb at 70°F Design concentration: 34% minimum for surface fires 50% for deep-seated Class A fires 100% reserve supply required for occupied spaces