In this study, we would analyze the case of fire incident that occurred at new residential construction site in Yeong-do gu, Busan, 13 April, 2016, based on results of the analysis, establish the hypothesis concerning with test of fire reappearance for determining the cause of fire, and suggest the results of the test for providing the information as to safe working procedures.
Generally, there are the oil-based and the water-based in the primers that are used in construction site. According to property of working, there are differences of use between the oil-based and the water-based. Primer is the varnish for rendering coat on wood or metal and the like and improves adherence and smoothness between sheets and surface of coating.
In the process of work, it is included putting primer on the surface of coating, eliminating the splinter with cigarette lighter or torch, and attach the sheets on the surface. But it is the precaution in which it includes maintaining enough time to prevent fire from putting oil based primer on the surface of coating to eliminating the splinter with cigarette lighter or torch.
As the results of test, it was not ignited on the water-based primer with the igniter regardless of the time between putting it to eliminating the splinter with cigarette lighter or torch.
If it is used in which oil-based primer and thinner are combined according to frequently used method of working, it was ignited on it at the time, such as instant and 10', but not ignited at 20' with cigarette lighter.
If only oil-based primer is painted on the surface of wood, it was ignited on it at the time, such as instant and 3', and partially ignited at 6', but not ignited at 9' with cigarette lighter.
If oil-based primer is putted on it in 70~80% RH, it was ignited on it at 10', and partially ignited at 15', but not ignited at 20' with cigarette lighter longer than the case of oil-based primer in 40~50% RH.