This study analyzed the range of damage impact of radiant heat caused by BLEVE (Boiling Liquid Expanding Vapor Explosion) caused by fires around small LPG storage tanks by applying KORA and ALOHA programs. There are many casualties and property damage in fire and explosion accidents due to the wide use of small LPG storage tanks. Still, small storage tanks have no special safety measures other than safety valves. The safety valve installed in the tank can initially relieve overpressure, but the released LPG will lead to a fire and a secondary chain explosion.