Analisis Kegagalan Boiler Feed Water Pump Berdasarkan Vibration Monitoring Pada Industri LNG

Putri, Amelda Balqis Adiesha (2025) Analisis Kegagalan Boiler Feed Water Pump Berdasarkan Vibration Monitoring Pada Industri LNG. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Boiler Feed Water Pump (BFWP) adalah peralatan kritis di industri LNG yang rentan terhadap vibrasi abnormal berkecepatan tinggi. Penelitian ini bertujuan mengidentifikasi akar penyebab kegagalan BFWP akibat getaran tinggi dan menyusun strategi perawatan optimal menggunakan data Predictive Maintenance periode Oktober 2020 - September 2022. Metode evaluasi yang digunakan meliputi standar ISO 10816-3 dan ISO 10816-7, analisis spektrum FFT, Fault Tree Analysis (FTA) berbasis data failure rate OREDA, Fussell-Vesely (FV) Importance Measure, serta 5 Why's Analysis. Hasil pengujian menunjukkan getaran masuk dalam Zona C dan D (berbahaya). Dua mekanisme kegagalan utama yang teridentifikasi adalah pressure pulsation serta unbalance akibat eksentrisitas dinamis. Analisis FTA menghasilkan probabilitas top event sebesar 0,1437 dari 6 basic event. Tiga kejadian paling kritis dengan kontribusi FV tertinggi meliputi kebocoran gasket casing (78,69%), kebocoran drain valve (9,67%), dan impeler tersumbat material asing (6,97%). Sebagai solusi, dirumuskan rekomendasi strategi pemeliharaan berbasis RCM Decision Logic Tree termasuk scheduled discard, restoration, failure-finding task, hingga redesign untuk menjamin keandalan jangka panjang BFWP.
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The Boiler Feed Water Pump (BFWP) is critical equipment in the LNG industry that is highly susceptible to high-speed abnormal vibrations. This study aims to identify the root causes of BFWP failures driven by high vibration and develop an optimized maintenance strategy using Predictive Maintenance data from October 2020 to September 2022. The evaluation utilizes ISO 10816-3 and ISO 10816-7 standards, FFT spectrum analysis, Fault Tree Analysis (FTA) based on OREDA failure rate data, Fussell-Vesely (FV) Importance Measure, and 5 Why's Analysis. Results indicate that vibrations fall within Zones C and D (unacceptable range). The two dominant failure mechanisms identified are pressure pulsation and unbalance with dynamic eccentricity. The FTA yields a top event probability of 0.1437 across 6 final basic events. The three most critical events with the highest FV contribution are pump casing gasket leakage (78.69%), drain valve leakage (9.67%), and impeller obstruction by foreign material (6.97%). Consequently, maintenance strategies based on the RCM Decision Logic Tree including scheduled discard, restoration, failure-finding tasks, and redesign are recommended to ensure long-term BFWP reliability.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Boiler Feed Water Pump, vibrasi, vibration monitoring, Fault Tree Analysis, industri LNG, performa pompa, Boiler Feed Water Pump, vibration, vibration monitoring, Fault Tree Analysis, LNG industry, Pump performance
Subjects:	Q Science Q Science > Q Science (General) Q Science > QA Mathematics > QA402 System analysis. Q Science > QA Mathematics > QA935 Vibration
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Amelda Balqis Adiesha Putri
Date Deposited:	21 Jul 2026 04:06
Last Modified:	21 Jul 2026 04:06
URI:	http://repository.its.ac.id/id/eprint/135933

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