ReSchedule Sistem Perpipaan Water Treatment Plant Pada PLTGU dengan Metode FLASH (Fuzzy Logic Applications For Scheduling) – Metode Dual Shift.

  • Alfina Rahmawati Politeknik Perkapalan Negeri Surabaya
  • Nurvita Arumsari Politeknik Perkapalan Negeri Surabaya
  • Ika Erawati Politeknik Perkapalan Negeri Surabaya
Keywords: Scheduling, PERT, FLASH, Dual Shif, Reschedule


Abstract - The construction of the piping system installation construction of Water Treatment Plant which was scheduled with a duration of 300 days in 12 months encountered a delay. A delay of procurement activites for 66 days due to the incorrect material supplied resulted in construction activities being hampered. Therefore, a penalty of 0.001 percent of the contract value per day was paid by the company. A rescheduling analysis was required to finish the project especially in the construction activites. In this study, rescheduling was carried out using a comparison of the PERT - Dual Shift and FLASH - Dual Shift methods based on the optimum time and minimum cost. From the results of the analysis, it can be explained that rescheduling of 390 days duration using PERT method resulted in smaller cost compared with PERT - Dual Shift method with a difference of 170 days duration. While the FLASH method with a duration of 366 days resulted in a smaller cost compared to FLASH – Dual shift Method with a duration of 183 days. Based on the analysis, it was also found that the FLAS showed that the minimum cost and the optimum time compared with Pert Method. So, FLASH method is more recommended for rescheduling of the project in this study considering, the minimum cost and optimum time.