Perancangan Jalur Perpipaan Fire Fighting Water Spray System Dan Hydrant Untuk Equipment Condensate Tank Kapasitas 10.000 Barrel

Abstract

An Offshore Receiving Facility (ORF) in Gresik, East Java, processes natural gas production and contains two condensate storage tanks, each 10,000 barrels capacity, 15.2 m diameter, and 10.2 m height. Condensate is a highly flammable liquid, thus a reliable cooling system is required to prevent heat buildup and ignition. This study designs a fire fighting system consisting of a water spray and hydrant system for tank surface cooling. The design process includes piping layout planning, pipe sizing, and head loss analysis using Darcy-Weisbach and Bernoulli equations. A 3D model was developed with AutoCAD Plant 3D, while hydraulic simulations were conducted using Pipe Flow Expert. Results showed a total head of 154.3169 m, compared to manual calculation of 152.47631 m, with a difference of 1.193%. The system consists of 4 hydrant pillars and 76 spray nozzles. Required pump power is 480.394 kW, and a Godwin Dri-Prime HL260M centrifugal pump was selected (207 m head, 1800 rpm, 88% efficiency, 540 kW/728 hp). The design refers to NFPA 14, NFPA 15, and API 2001 standards. Estimated material and equipment cost is IDR 925.783.945,00.