Analisis Penyebab Kegagalan Crankshaft Pada Mesin MAN Type D 2842 LE201 Menggunakan Metode Failure Mode and Effect Analysis (FMEA)

Electrical energy is one of the main necessities in today's life, but limited electricity supply in remote areas remains a challenge. Diesel Power Plants (PLTD) play an important role in providing electricity in these areas. One of the PLTDs on Halang Island experienced a crankshaft failure in its MAN type D 2842 LE201 diesel engine, causing engine downtime and disrupting the electricity supply. This study aims to analyze the causes of crankshaft failure using the Failure Mode and Effect Analysis (FMEA) method. This method evaluates failures based on severity, occurrence, and detection. Data was obtained through direct field observations, interviews with technicians and operators, and documentation of damage. The analysis was conducted by determining the Severity, Occurrence, and Detection values to calculate the Risk Priority Number (RPN) for each potential failure. The results of the study showed that the connecting rod bearing and main bearing components had the highest RPN values of 200 and 192, respectively. These findings form the basis for formulating corrective and preventive actions such as improving the lubrication system, use of original materials, and implementing timely maintenance procedures. This study is expected to contribute to enhancing the operational reliability of diesel engines at PLTD and minimizing the risk of similar failures in the future.