ANALISIS PENGENDALIAN KUALITAS CACAT DIMENSI PADA HEADER BOILER MENGGUNAKAN METODE FMEA DAN FTA DI PT. IHI POWER SERVICE INDONESIA (IPSI)

IHI Power Service Indonesia is a company engaged in the Boiler Pressure Part Industry (Fabrication) every production activity it always strives to produce quality products according ASME standards (American Society of Mechanical Engineers). Production results are less than maximum. In 2020 period total was 28,527 tons and number defects 364 tons, 2021 22,703 301 tons. The author uses Failure Mode And Effect Analysis (FMEA) method Tree (FTA) method. From data processing using Pareto diagram based on RPN value obtained from FMEA method, dominant type defect obtained, namely Hole Distance with an 364.5 Dimension Length 351.17, then analyzed FTA, at proposed improvement stage use 5W+1H Factors that cause include inaccurate faded measuring instruments, rare maintenance radial drilling machines blades rarely replaced. Proposed improvements reduce requesting replacement carrying out regular machines, holding shift schedules for operators, conducting training operators.