Analisis Risiko Pelaksanaan Pekerjaan pada Tol Lingkar dengan Metode Fault Tree Analysis (FTA)

Abstract

The Pekanbaru Ring Road Toll Project, which is part of the Trans-Sumatra Toll Road, plays an important role in supporting transportation connectivity in Pekanbaru City and its surrounding areas. During its implementation, this project is exposed to potential risks that may lead to delays, cost overruns, and reduced construction quality. Therefore, this study aims to identify and analyze the risks associated with the execution of the works in this project using the Fault Tree Analysis (FTA) method. The research was conducted by distributing questionnaires to 9 respondents who are involved in the project. Risks were assessed based on the likelihood and consequence levels in accordance with AS/NZS 4360:2004 standards. Furthermore, to determine the root causes of the highest work-related risks, the Fault Tree Analysis (FTA) method was applied as a top-down approach to trace the Top Event to its Basic Events. The results of the study indicate that the risks originate from four main factors, namely management, technical, natural, and human factors. Based on the risk level calculations, five risks fall into the high-risk category, seven risks into the medium category, and nine risks into the low category. Management factors are found to be the most influential in the emergence of risks in the project. Suggested mitigation efforts include improving team coordination effectiveness, enhancing project planning and control, optimizing equipment maintenance, strictly implementing OHS, and anticipating weather changes in the field. By implementing these detailed risk management measures, it is expected that future similar projects can be carried out more smoothly, on schedule, and with minimized potential losses.