A comparison of application of the project scheduling using precedence diagram method (PDM), line of balance (LOB), and position weight method (RPWM) to construct circulating close cooling water system

Project is activity that does not happen at any time and has specific purpose. There must be a time limit on a project work, so project scheduling is needed to prevent delays. In this paper, the focus is about scheduling Circulating Close Cooling Water System construction project using Precedence Diagram Method (PDM), Line of Balance (LoB), and Position Weight Method (RPWM). The result from different methods will be compared to determine the most precise completion for Circulating Close Cooling Water System construction project. Applying PDM method, duration of the project is 210 days and its critical path is clearly visible in the PDM network diagram. Contrast to the LoB method, the duration is 244 days and can’t display critical path nor invisible logic connection between activities. Meanwhile, the RPW method duration is 213 days and capable of displaying critical paths. Based on the analysis for each method, the ability to display critical paths, the logic relationships, obstacles, and usage; the suitable method to complete Circulating Close Cooling Water System construction project is Precedence Diagram Method.