Gas Explosion Research With Large Spherical Vessel

Dr.(Ms.) Manju Mittal

This paper presents explosion severity characteristics of a gas-air-nitrogen mixture measured with a large scale (3.66-m diameter) Spherical Steel Vessel established at CSIR-CBRI. The relatively large size of vessel makes it particularly suitable for ignition, flammability, and detonability studies with minimum wall effects and the data serve as reliable input for designing explosion safety measures and explosion risk assessment for industries. Investigations on explosion characteristics of various gases have been undertaken. Some results for methane-air-nitrogen mixtures are covered as representative explosion data. The explosion pressure and time to reach the same are given as a function of nitrogen dilution. The information can be used to design the explosion safety measures for installations handling this gas.