Analisis Keandalan Dan Perawatan Instrumen Pada Sistem Reaktor Asam Tereftalat Dengan Metode Reliability Centered Maintenance

Thoriq, Sulthan Thoriq Athallah (2026) Analisis Keandalan Dan Perawatan Instrumen Pada Sistem Reaktor Asam Tereftalat Dengan Metode Reliability Centered Maintenance. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Purified Terephthalic Acid (PTA) merupakan komoditas penting sebagai bahan baku utama PET yang digunakan pada industri tekstil, kemasan, dan berbagai produk polimer. Tingginya permintaan global menuntut pabrik PTA untuk beroperasi dengan keandalan tinggi serta meminimalkan downtime. Salah satu komponen inti dari sistem produksi PTA adalah reaktor. Pada sistem reaktor, instrumen memegang peranan penting, kegagalan pada sistem instrumen dapat menyebabkan ketidakstabilan proses, penurunan kualitas produk, peningkatan konsumsi energi, hingga risiko kecelakaan kerja. Untuk mengatasi hal ini, diperlukan pendekatan pemeliharaan yang efektif melalui Reliability Centered Maintenance (RCM) yang mampu menentukan strategi perawatan optimal. Pemeliharaan dilakukan apabila nilai keandalan sudah menyentuh 60 %. Jadwal pemeliharaan pada valve dan transmitter berturut-turut adalah 5000 jam dan 20000 jam setelah instrumen bekerja dari kondisi semula. Dengan menggunakan metode FMECA didapatkan komponen dengan RPN tertinggi untuk control valve, DP transmitter, RTD temperature transmitter, dan radioactive level transmitter berturut-turut adalah solenoid coil (RPN = 160), Three-valve manifold (RPN = 112), Resistence Wire (RPN = 160), dan Electronic Module (RPN = 160). Adapun penetapan jenis pemeliharaan yang diterapkan pada instrumen adalah: schedule failure finding task, schedule on-condition task, schedule discard task, dan one time change.
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Purified Terephthalic Acid (PTA) is a key commodity as the primary raw material for PET, which is used in the textile and packaging industries, as well as in various polymer products. High global demand requires PTA plants to operate with high reliability and minimize downtime. One of the core components of a PTA production system is the reactor. In reactor systems, instrumentation plays a critical role; failures in the instrumentation system can lead to process instability, reduced product quality, increased energy consumption, and even the risk of workplace accidents. To address this, an effective maintenance approach is required through Reliability-Centered Maintenance (RCM), which can determine the optimal maintenance strategy. Maintenance is performed when the reliability value reaches 60%. The maintenance schedules for valves and transmitters are 5,000 hours and 20,000 hours, respectively, after the instruments have been operating from their initial condition. Using the FMECA method, the components with the highest RPN values for control valves, DP transmitters, RTD temperature transmitters, and radioactive level transmitters are, respectively, the solenoid coil (RPN = 160), the three-valve manifold (RPN = 112), the resistance wire (RPN = 160), and the electronic module (RPN = 160). The types of maintenance applied to the instruments are: scheduled failure detection tasks, scheduled on-condition tasks, scheduled discard tasks, and one-time changes.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Sistem reaktor, instrumen, pemeliharaan, RCM
Subjects:	T Technology > TS Manufactures > TS174 Maintainability (Engineering) . Reliability (Engineering)
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Sulthan Thoriq Athallah
Date Deposited:	04 Aug 2026 01:01
Last Modified:	04 Aug 2026 02:00
URI:	http://repository.its.ac.id/id/eprint/142436

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