Reliability, Availability and Maintainability Analysis for Main Oil Line Pump by Dominant Failure Modes

A good maintenance strategy requires a good reliability, availability and maintainability (RAM) analysis in order to cater the real problem to specific equipment or a system. Resolving the real problem will improve the equipment reliability to ensure higher availability of the system to operate. In this project, 2 units of main oil line (MOL) pumps of a crude oil transfer system were selected for RAM analysis. The analysis was carried out based on individual dominant failure modes that contributed to failures of the pumps which involve data of time-to-failure and time-to-repair. Reliability and maintainability analysis was carried out with the aid of Reliasoft Weibull++ software to obtain the required parameters. ReliaSoft BlockSim software was used for reliability block diagram (RBD) construction and simulation to obtain the availability of the whole system by assessing individual failure modes. External leakage – process medium was found to be the most critical failure mode which was a failure contributed by mechanical seal malfunction.