Results
--
Required Separation Distance
m
--
Personnel Safety Distance (2.5 kW/m²)
m
--
Piloted Ignition Distance (12.5 kW/m²)
m
--
Thermal Dose at Target
(kW/m²)^(4/3)·s
Note: Point source model is conservative for near-field. Use 2.5 kW/m² for prolonged personnel exposure, 4.7 kW/m² for pain threshold at 30s, 12.5 kW/m² for piloted ignition of wood, 25 kW/m² for auto-ignition. Per SFPE Handbook and NFPA 80A.
Reference
Separation Distance (Point Source Model):
R = sqrt(chi_r * Q / (4 * pi * q''_target))
Thermal Dose (Eisenberg) = q''^(4/3) * t
Limits: 2.5 kW/m² personnel, 4.7 kW/m² pain (30s), 12.5 kW/m² piloted ignition of wood
Ref: SFPE Handbook, API 2510, NFPA 80A