Hydrogen Tank Rupture in Fire in the Open Atmosphere: Hazard Distance Defined by Fireball

The engineering correlations for assessment of hazard distance defined by a size fireball after either liquid hydrogen spill combustion or high-pressure tank rupture in fire the open atmosphere (both stand-alone and under-vehicle tanks) are presented. term “fireball size” is used maximum horizontal that different from diameter” applied to spherical semi-spherical shape fireballs. There reasons deviate shape, e.g., case under vehicle, non-instantaneous opening walls, etc. Two conservative built using theoretical analysis, numerical simulations, experimental data available literature. model assumes complete isobaric air presumes its hemispherical as observed experiments simulations rupturing at ground level. dependence on mass fireball’s diameter-to-height ratio discussed. correlation release based Zabetakis (1964). can be tools access distances scenarios gaseous storage atmosphere.