Abstract: The fire extinguishing test platform for flammable liquid spill fires was designed and built, and the effects of slope, leakage flow, supply intensity and other factors on the fire extinguishing efficiency of spill flammable liquid were studied. The test method for evaluating the fire extinguishing efficiency of flammable liquid spill fire was defined, and the fire extinguishing efficiency of foam extinguishing agents such as AFFF, FP and P was evaluated. The results show that the stable burning area of 120# solvent oil basically covers the entire oil tank when the slope is 0.5o and the leakage flow is 4.5 L/min. In this case, foam is suitable for fire extinguishing. This test method can distinguish the fire extinguishing efficiency difference of different types of foam extinguishing agents, of which AFFF is the fastest and P is the worst; The thermal radiation flux values show that the test method is consistent with the characteristics of spill fire combustion and the development process of fire suppression.

Key words: spill fire, test method, slope, leak, supply intensity