Desain Jalur Pipa New Line Dari Pompa Menuju Separator Pada Project Powerplant Blawan Ijen

Abstract

The Blawan Ijen Unit #1 Geothermal Power Plant was developed to support the electricity supply network in the Java-Bali region. A case study showed that the absence of a pipe line connecting the pump to the separator resulted in suboptimal operations. To address this issue, a new pipe line was designed with the following specifications: Nominal Pipe Size (NPS) 6 inches, design pressure 30 bar, and design temperature 215°C. Referring to the P&ID diagram, the pipe line arrangement design can be developed, wallthickness calculated, pipe span determined, and 3D modeling performed, ultimately yielding an isometric drawing. The minimum wallthickness is 0,197 inches, which is below the minimum requirement of 0,280 inches for ASTM A106 Grade B material. This indicates the need for adjustments in material selection or pipe thickness to ensure compliance with standards. Additionally, the maximum allowable pipe span is determined to be 32,482 feet, or approximately 391,74 inches. This span requires at least 6 supports along the pipe to maintain structural stability and safety during operation. The new pipe design is expected to improve fluid transportation efficiency, meet technical requirements, and enhance the overall performance of the geothermal power generation system.