Abstract
In design of offshore plant such as a FPSO (Floating, Production, Storage and Offloading unit), the determination of topside layout is basic and important stage in which various modules and equipment should be optimally allocated in limited space. In this study, an integrated method for optimal layout of offshore plant topside was proposed. The proposed method consists of two steps. The first stage is to determine the layout of topside modules. There are several modules on the topside. Equipment which have same or similar