COST AND SCHEDULE RISK ANALYSIS FOR THE JAKARTA-BANDUNG HIGH SPEED RAILWAY SUBSECTION 3D PROJECT FROM THE PERSPECTIVE OF AN INDONESIAN CONTRACTOR

• Main Author: Raishania Amarin Gata, Tasya
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik sipil
• Online Access: https://digilib.itb.ac.id/gdl/view/78435
• Institution: Institut Teknologi Bandung

The Jakarta-Bandung High Speed Railway is a national strategic project built through cooperation between Indonesia and China to encourage the modernization of mass transportation, connectivity between the cities of Jakarta and Bandung, and regional development. Since this project is an EPC project, which is more complex than most construction projects in general, there is a significant risk involved. In addition, the 3D Subsection confronts further challenges in the form of additional work, such as the construction of Padalarang Station and the widening of the subgrade, which increases the potential for risks. Risks that are not managed properly can cause delays in completion and cost overruns. Therefore, risk management is required to maintain risk exposure within an acceptable range. This research was conducted to identify risks to costs and time at the construction implementation stage from the perspective of an Indonesian contractor, determine the level of risk, and plan priority risk responses. In this research, data was collected by conducting literature reviews and interviews to identify risks. Then, a questionnaire was distributed to determine the probability value and impact of the risk occurring. The frequency index/severity index approach is then used to process this value and calculate the risk and risk level. Extreme-level risks are dangers that are prioritized, and a solution is planned through interviewing experts. There are 55 risks identified as a result of the research that has been done. Cost-related risk is broken down into four risk categories: 9 extreme risks, 26 high risks, 19 medium risks, and 1 low risk. Time-related risk is made up of 7 extreme risks, 28 high risks, 19 medium risks, and 1 low risk. Risks with extreme levels both in terms of costs and time include increases in material prices, increases in fuel prices, design changes, miscoordination and/or imprecise assignment of work scope with other contractors, as well as design errors. Extreme cost-related risks itself include claims not being accepted by the project owner, increases in equipment rental costs, a mismatch between the BoQ and the actual conditions on the ground, and a lack of contract understanding. Extreme time-related risks itself include unfavorable weather, language barriers, and differences in work cultures. All extreme risks are mitigated except for the risk of a mismatch between the volume of work in the BoQ and conditions in the field. This risk will be escalated if it is caused by unexpected field conditions. In addition, the risk of price increases will also be escalated if there is a significant price increase due to unexpected events. There are no extreme levels of risk that can be accepted and avoided.