Metode Penentuan Interval Waktu Preventive Maintenance Dengan Memperhatikan Critical Failure

Sahaduta, Yegar (2022) Metode Penentuan Interval Waktu Preventive Maintenance Dengan Memperhatikan Critical Failure. S1 thesis, Universitas Kristen Indonesia.

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Abstract

Dalam suatu perusahaan, perawatan mesin sangat di butuhkan untuk menjaga kontinuitas produksi agar terjamin maka di buat perencanaan perawatan mesin yang dapat menjaga keandalan suatu mesin karena kerusakan mesin dapat menghambat kontinuitas produksi. Maka dari itu di butuhkan suatu sistem yang mengatur tentang preventive maintenance jadi penulis akan membuat sebuah metode untuk menentukan interval waktu preventive maintenance. Metode yang akan di gunakan penulis adalah mengumpulkan data downtime dan histori kerusakan kemudian mengolah data untuk identifikasi masalah dengan menggunakan diagram pareto. Kemudian menghitung time to repair (ttr) dan time to failure (ttf) untuk selanjutnya mengnentukan dan menghitung interval waktu dengan menggunakan aplikasi minitab19. Kemudian menentukan prioritas dan maintenance plan dengan menggunakan Failure Modes and Effect Criticality Analyze (FMECA). Dari hasil penelitian penulis tentang mesin omori plastik sealing mendapatkan hasil dari diagram pareto dengan 6 bagian mesin yang medapat nilai di bawah 80% yaitu former, heater center seal, core plastic, heater end seal, timming belt, dan pre heater. Penentuan distribusi kegagalan dan perhitungan interval waktu semua mesin omori dengan menggunakan Minitab19 mendapatkan hasil bagian mesin Core plastic 19,2833 hari; Former 20,6949 hari; Pre Heater 103,845 hari; Heater Center Seal 16,9774 hari; Heater End Seal 47,6656 hari; Timming Belt 128,1199 hari. Maintenance plan secara mekanik ataupun elektrik yang di terapkan secara rutin dan benar sesuai dengan interval waktunya akan membuat peforma mesin lebih optimal serta dapat mengurangi jumlah downtime di tiap mesinnya./ In a company, machine maintenance is needed to maintain production continuity so that it is guaranteed, a machine maintenance plan is made that can maintain the reliability of a machine because machine damage can hamper production continuity. Therefore we need a system that regulates preventive maintenance so the author will create a method to determine the preventive maintenance time interval. The method that will be used by the author is to collect downtime data and damage history and then process the data for problem identification using Pareto diagrams. Then calculate the time to repair (ttr) and time to failure (ttf) to further determine and calculate the time interval using the minitab19 application. Then determine the priority and maintenance plan using Failure Modes and Effect Criticality Analyze (FMECA). From the results of the author's research on the Omori plastic sealing machine, the results obtained from the Pareto diagram with 6 engine parts that scored below 80%, namely former, heater center seal, plastic core, heater end seal, timing belt, and pre heater. Determining the failure distribution and calculating the time interval for all Omori machines using Minitab19 to get the results of the Core plastic engine parts 19.2833 days; Former 20.6949 days; Pre Heater 103.845 days; Heater Center Seal 16.9774 days; Heater End Seal 47.6656 days; Timming Belt 128,1199 days. A mechanical or electrical maintenance plan that is applied regularly and correctly in accordance with the time interval will make the machine's performance more optimal and can reduce the amount of downtime on each machine.

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