Results of experimental and theoretical investigations of fire and explosion hazards of liquefied petroleum gas (LPG) storage vessels are presented. The evaporation intensity from LPG pools and the thermal radiation intensity distribution on the surface of cylindrical vessels containing LPG as a result of pool fires placed near the vessel were measured. Available mathematical models were verified and new models were proposed for processes such as evaporation from the pool, dispersion of vapour clouds, vapour cloud explosion, the behaviour of the vessel containing LPG placed near pool fires, boiling liquid expanding vapour explosions, and thermal radiation from the pool fire. The results can be used for ensuring fire and explosion safety with respect to LPG storage vessels.