ANALISIS KINERJA BOILER FEED WATER PUMP DI KAPAL MT GRIYA CIREBON

Abstract

Ships as maritime transportation vessels rely heavily on the performance of their machinery systems to ensure smooth operations. One of the essential auxiliary systems on board is the boiler system, which functions to generate steam for fuel heating and to support the ship’s fuel system. The performance of the boiler is significantly influenced by the boiler pump, which supplies water into the steam drum to maintain stable steam pressure and volume. On board MT Griya Cirebon, a decline in boiler pump performance was identified, indicated by an increase in operating temperature beyond the safe limit, abnormal noise, and leakage. These conditions reflect mechanical disturbances that may disrupt ship operations and therefore require comprehensive technical analysis. This study aims to analyze the causes of the increased operating temperature of the boiler pump beyond safe operating limits and to identify the factors contributing to leakage in the pump system. Furthermore, this research seeks to determine appropriate maintenance and repair measures to restore the boiler pump to optimal operating condition without further leakage or performance issues. This research employed a qualitative descriptive method with a case study and problem-solving approach. The study was conducted on board MT Griya Cirebon, an Indonesian-flagged vessel registered in Jakarta (IMO 9279587). Primary data were obtained through direct observation and interviews with the Fourth Engineer, while secondary data were collected from documentation and literature studies, including books, journals, and the centrifugal pump main feed water boiler manual. Data collection techniques included observation, interviews, and documentation review. Data analysis was carried out using the Cause-and-Effect Diagram Theory, Quality Control Theory, and Root Cause Analysis Theory. The results indicate that the increase in the boiler pump’s operating temperature was primarily caused by worn ball bearings, leading to excessive friction, as well as the use of spare parts that did not meet the required specifications. Leakage occurred due to shaft instability, which damaged the mechanical seal, oil seal, and washer, compounded by corrosion of pump components. Corrective actions included replacing the worn ball bearings and damaged components, along with routine temperature monitoring. With proper maintenance and disciplined supervision, the boiler pump’s performance was restored to stable and normal operating conditions without leakage.