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In this Research, the real scale model (Each diameter 50cm, 100cm, vertical size 65cm) was constructed in order to determine the oil steam explosion hazard due to the high temperature heating element. Steam generated from the diesel fuel ignition characteristics for high temperature heating element, experiments were conducted 142 times. Thermocouple to used the research was measured by “k-type.” “50cm set” of experimental results at the time of explosion, it took 82.8 seconds The temperature of the heating element was 334.8℃. the other “100cm set” of explosion Time spent is 108 second. Temperature was 620℃. Diesel heater, rods and the spacing of the explosion nears, Was started at a lower temperature. If you increase the amount of oil by the explosion occurred when the pressure wave occurs while the oil steam is increased on diesel Thus give rise to a large explosion. Higher the temperature of the higher upper rather than the higher lower diesel is explosion, it amount in 0.07g between 0.00045g The vapor arising from the experiments set was 10.8 (kg/m3). Experiments in the pressure due to temperature changes As the room temperature rises, the increased internal air pressure. This occurred on the surface of the vapor of the impact of vigorous exercise is considered.