RELIABILITY ANALYSIS OF THE STACKING SLADGE MACHINE AT STATION 10 OF THE BODY WELDING SHOP USING A PROBABILISTIC METHOD AT PT PQR
DOI:
https://doi.org/10.35261/barometer.v11i1.13183Abstract
This study was conducted at PT PQR with the objective of analyzing the reliability of the Stacking Sladge machine at Station 10 operating in the Sell Body Welding Shop Body 2 as a basis for determining a more effective and efficient maintenance strategy. The main issue faced by the company was the high frequency of machine failures, with 15 breakdowns recorded during the period from December 2024 to mid-February 2025, which potentially caused line stoppages and disrupted production continuity. Reliability analysis was performed using a probabilistic approach by evaluating the Mean Time Between Failure (MTBF) and modeling the failure distribution using exponential and Weibull distributions. Historical time between failure data were analyzed using Minitab software to estimate distribution parameters, while Microsoft Excel was used to calculate reliability functions, including the Survival Function, Cumulative Distribution Function (CDF), Probability Density Function (PDF), and Intensity Function. The results indicate that the MTBF of the machine is 126.53 hours, representing the average operating time before a failure occurs. Furthermore, the distribution modeling results show that the probability of machine failure increases significantly after the operating time exceeds 1,000 hours, indicating a critical machine condition. These findings highlight the importance of implementing a well-planned preventive maintenance strategy to minimize downtime, improve machine reliability, and ensure the efficiency and continuity of the production process.
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