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Identifikasi Kerusakan Unit Sterilizer dengan Metode Failure Mode and Effect Analysis (FMEA) dan Fault Tree Analysis (FTA) Adelia Larasati; Li Idi'il Fitri; Meutia Mirnandaulia; Taranipa Marfinta
Journal of Industrial Engineering and Technology Vol. 6 No. 1 (2025): Desember 2025
Publisher : Universitas Muria Kudus

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Abstract

The sterilizer unit at PT ABC experienced various damages during the palm oil processing process. This study aims to analyze potential risks and determine priority improvements that need to be done using the Failure Mode and Effect Analysis (FMEA) and Fault Tree Analysis (FTA) methods. There are five risks in the sterilizer unit at PT ABC based on the FMEA analysis. Risks with high criticality are leaking inlet steam piping with an RPN score of 210. Risks with medium criticality are broken and worn door packing and worn sterilizer door bearings with RPN scores of 175 and 150. Risks with low criticality are leaking blowdown pipes with an RPN score of 56. Furthermore, the FTA analysis found that the three main root causes of leaking inlet steam piping are incorrect installation of packing on flange joints due to mismatched sizes or bolt tightening, low welding strength due to inaccurate mechanics, and late replacement of materials due to components that have reached their service life. Therefore, the recommended corrective actions are proper and scheduled replacement of flange packing, as well as training for mechanics on correct welding and bolt installation procedures.
IMPLEMENTATION OF ANALYTICAL HIERARCHY PROCESS (AHP) IN A LAPTOP SELECTION DECISION SUPPORT SYSTEM FOR NEW STUDENTS Muhammad Khatami; Sastika Amalia; Nahdah Fadhilah; Li Idi'il Fitri; Melva Dwiyanti; Fahriansyah Sebayang; Jeli Marito Oppusuggu; Raja Rahmat Syawal
INKOFAR Vol. 10 No. 1 (2026)
Publisher : Politeknik META Industri Cikarang

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Background Laptop selection for first-year university students involves multiple technical and non-technical criteria, making the decision-making process complex. Purpose This study aims to implement the Analytical Hierarchy Process (AHP) as a decision support system to determine the most suitable laptop alternative among Acer, Asus, and HP. Methodology The study involved 30 first-year university students selected using purposive sampling. Five main criteria were identified: Aesthetic, Durability, Features, Performance, and Perceived Quality. Pairwise comparison data were aggregated using the geometric mean method. All comparison matrices satisfied the consistency requirement (CR ≤ 0.1). Findings The results indicate that Durability (0.4721) is the most dominant criterion, followed by Performance (0.2014), Perceived Quality (0.1683), Features (0.0946), and Aesthetic (0.0636). The global priority results show that Acer (0.7146) ranks first, followed by HP (0.1473) and Asus (0.1381)[. Implications Sensitivity analysis demonstrates that the ranking remains stable under reasonable weight variation Originality This study provides practical recommendations for students and methodological contributions in applying AHP with consistency and robustness testing.