Analisis Tekno Ekonomi Penggunaan Material Carbon Steel SA 106 Grade B dan Fiberglass Reinforced Plastic (FRP) Terhadap Pengaruh Suhu dan Kecepatan Fluida pada Condesate Polishing System PLTU Batang

Abstract - The Batang Steam Power Plant (PLTU), Central Java is engaged in state electricity production byutilizing coal sources. In the PLTU system, there is a term, namely, Balance Of Plant (BOP) which is useful forstabilizing a plant with several systems in it. Actual testing is carried out to determine the lifetime in terms ofstrength and resistance of the material to fluid conditions. Research for this final project is in the form ofcorrosion rate analysis with Immersion Test testing, using variables including the influence of fluid temperatureand flowrate on material strength. Then proceed with the lifetime calculation of Carbon Steel A106 Gr B andFiberglass Reinforced Plastic (FRP) materials in the condesate polishing system of PLTU Batang.The resultsobtained by carbon steel material with fluid flowrate service condition 1,655 m/s – 1,775 m/s and operatingtemperature 80-100oC can last 11 to 15 years. FRP material can last up to twice as much, namely 33 to 45.The calculation of project costs obtained a value of Rp 11,783,935,000 for Carbon Steel A 106 Grade Bmaterial and Rp 166,060,000 for FRP material. Based on the research that has been done, FRP material issuperior in terms of technical and economical.