Perhitungan Umur Layan (Residual Life Assesment) Instalasi PT. KPI RU IV Cilacap dengan Metode Reliability Block Diagram

Residual Life Assessment (RLA) is a crucial step to ensure the reliability, safety, and operational efficiency of equipment that has exceeded its design life or shows signs of aging. This study was conducted at the Pertamina International Refinery Unit IV (RU IV) in Cilacap, aiming to evaluate the current condition of the equipment, estimate the remaining operational life, and provide recommendations for necessary maintenance or replacement actions. The Risk-Based Inspection (RBI) method and the Reliability Block Diagram (RBD) approach were employed to map risks, assess system reliability, and deliver accurate remaining life estimations. Data were collected through visual inspections, non-destructive testing, dimensional measurements, and material analysis. The analysis results indicate that some equipment requires special attention concerning structural and operational integrity.