Calculate thermal runaway propagation risk, ventilation requirements, and safety clearances for battery installations.
Input Parameters
Results
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Required Ventilation
CFM
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Potential Gas Volume
ft³
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Min Clearance
inches
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Propagation Risk
Note: NFPA 855 and UL 9540A govern ESS installations. LiFePO4 is inherently safer with no thermal runaway propagation. Always provide adequate ventilation.
Reference
Gas Volume = Gas per kWh x Total kWh
Ventilation = Vent Factor x kWh / Modules
LiFePO4: 0.5 ft³/kWh gas, low risk
NMC: 2.5 ft³/kWh gas, moderate risk
Lead-Acid: 1.2 ft³/kWh (H2 gas)