Analisis Penilaian Kinerja Batching Plant Menggunakan Metode Reliability, Availability, Maintainability, Dan Dependability (ramd) Di Pt Xyz

M Rapih Atmanegara, Judi Alhilman, Aji Pamoso

Abstract

Abstrak PT XYZ merupakan perusahaan yang memproduksi semen beton untuk pembangunan berkelanjutan di Indonesia. Berdasarkan data yang diperolah dari sistem batching plant dari tahun 2017 hingga 2019 diperoleh system breakdown structure dari sistem tersebut seperti wheel louder, compressor, genset, dan plant. Dari keempat subsistem tersebut akan dipilah subsistem kritis berdasarkan dari downtime dan repair time pada setiap subsistem. Dikarenakan sistem batching plant tersusun menjadi sistem serial yang akan mengakibatkan apabila terdapat subsistem yang mengalami kegegalan sistem maka sistem lainnya akan terhenti. Oleh karena itu diperlukan analisis Reliability, Availability, Maintainability, dan Dependability dari sistem tersebut guna mendapatkan analisis terhadap performa dari tiap subsistem dan menentukan subsitem kritis yang merugikan perusahaan. Dari hasil pengolahan RAMD (Reliability, Availability, Maintainability, dan Dependability) menggunakan pemodelan Reliability Block Diagram berdasarkan analytical approach, pada saat t = 8 jam sistem memiliki nilai Reliability (59%). Rata-rata nilai Maintainability sistem pada saat t = 24 jam sebesar (97,19%). Nilai Avaialbility markov prosess sebesar (80,27%), inherent availability (80,68%) dan operational availability (88,05%). Berdasarkan world class maintenance Key Performance Indicator, indicator leading dan lagging availability belum mencapai standar target indicator. Nilai dependability terkecil terdapat pada subsistem plant sebesar (5,07) dan merupakan subsistem kritis yang perlu diteliti lebih lanjut.

Kata kunci : Reliability, Availability, Maintainability, Dependability, Reliability Block Diagram, Markov Process, Key Performance Indicator

Abstract PT XYZ is a company that produces concrete cement for sustainable development in Indonesia. Based on data obtained from the batching plant system from 2017 to 2019 a system breakdown structure was obtained from the system such as wheel louder, compressor, generator set, and plant. Of the four subsystems, critical subsystems will be sorted based on downtime and repair time on each subsystem. Because the batching plant system is arranged into a serial system that will result if there are subsystems that experience system failure then other systems will be stopped. Therefore we need an analysis of Reliability, Availability, Maintainability, and Dependability of the system to get an analysis of the performance of each subsystem and determine critical subsystems that are detrimental to the company. From the results of RAMD processing (Reliability, Availability, Maintainability, and Dependability) using Reliability Block Diagram modeling based on the analytical approach, when t = 8 hours the system has a Reliability value (59%). The average value of system Maintainability at t = 24 hours is (97.19%). The availability Markov process value is (80.27%), inherent availability (80.68%), and operational availability (88.05%). Based on the world-class maintenance of Key Performance Indicators, leading indicators and lagging availability have not yet reached the target indicator standard. The smallest dependability value is found in the plant subsystem (5.07) and is a critical subsystem that needs further investigation.

Keywords: Reliability, Availability, Maintainability, Dependability, Reliability Block Diagram, Markov Process, Key Performance Indicator

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