Keywords:Del-Phi Technique, Statistical method, Risk Activity, Metropolitan Rapid Transit
The construction projects remain one of the most hazardous projects. Nowadays, in Thailand, public infrastructure projects are growing every day. The Mass Rapid Transit system project is one of the public infrastructure projects that the government has continuously developed. Risk activities in construction work are part of a construction project that is causing harm to occupational injuries and fatalities. Thus, this research aims to identify and analysis the risk activities which affect the traffic during construction of Metropolitan Rapid Transit project using the Metropolitan Rapid Transit Orange Line project as the case study. The data was collected by structural interviews with Del-Phi technique from all 10 personnel of the Metropolitan Rapid Transit Orange Line. After that, the data was analyzed for risk level and its category by Statistical methods. The findings of case study showed that there was only one activity which had the highest level of risk (Mdn ≥ 5, IR = 0). Moreover, there were eight activities which had a high level of risk (4 ≤ Mdn ≤ 4.5, 0 ≤ IR ≤ 1). Furthermore, there were three activities which had a low level of risk (Mdn = 3, IR = 0). Finally, these risk activities can be used for preventive workface planning (PWFP) in the MRT construction project for the personnel in the future.
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