Manajemen Risiko Operasional Pada Offshore Production Facility PT. Pertamina EP Asset 4: Poleng Field dengan Risk Failure Mode and Effect Analysis dan Fuzzy Fault Tree Analysis

Izza, Ayu Adista Nurul (2025) Manajemen Risiko Operasional Pada Offshore Production Facility PT. Pertamina EP Asset 4: Poleng Field dengan Risk Failure Mode and Effect Analysis dan Fuzzy Fault Tree Analysis. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Industri minyak dan gas (migas) memiliki peran strategis dalam pertumbuhan ekonomi nasional. Sebagai negara dengan cadangan migas yang signifikan, Indonesia telah lama menjadi produsen dan eksportir migas, namun dalam beberapa tahun terakhir produksi minyak cenderung menurun. Salah satu tantangan utama adalah loss production akibat kerusakan peralatan, kesalahan operasional, dan kondisi eksternal, yang memicu unplanned shutdown dan menurunkan availability Offshore Production Facility. Penelitian ini bertujuan mengidentifikasi dan menganalisis kegagalan operasional dengan pendekatan manajemen risiko berdasarkan ISO 31000:2018. Metode Risk Failure Mode Effect Analysis(RFMEA) digunakan untuk menentukan prioritas kerusakan yang menghasilkan tiga risiko kritikal: module PLC fault, regulator instrument problem dan leak tubing connection. Setelah risiko kritikal teridentifikasi, root cause dianalisis menggunakan metode Fuzzy Fault Tree Analysis (FFTA) dengan pendekatan penilaian numerik terhadap probabilitas dan tingkat keparahan risiko. Hasil analisis menunjukan bahwa unvailibiliy akibat modul PLC fault mencapai 27.51% yang disebabkan oleh lingkungan lembab, regulator instrument problem memberikan kontribusi tertinggi sebesar 75.4% yang disebabkan oleh icing plugging (efek Joule-Thomson), dan leak tubing connection disebabkan oleh umur pipa melewati batas layak pakai dengan kontribusi sebesar 83%. Tindakan mitigasi disusun berdasarkan pendekatan analisis pareto (80/20) untuk mengidentifikasi masalah dominan, dan strategi mitigasi dirumuskan secara sistematis menggunakan pendekatan 5W1H. Salah satu prioritas mitigasi risiko regulator instrument, yaitu icing plugging, diusulkan dengan tindakan upsizing pipa yang mengalami icing. Tindakan ini diharapkan dapat meningkatkan laju aliran gas dan mengurangi efek pendinginan cepat akibat ekspansi gas, sehingga mencegah terbentuknya es pada jalur instrumen, memperpanjang umur regulator, dan menurunkan risiko shutdown akibat penyumbatan
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The oil and gas industry plays a strategic role in national economic growth. As a country with significant oil and gas reserves, Indonesia has long been a producer and exporter of oil and gas, but in recent years oil production has tended to decline. One of the main challenges is loss of production due to equipment damage, operational errors, and external conditions, which trigger unplanned shutdowns and reduce the availability of offshore production facilities. This study aims to identify and analyze operational failures using a risk management approach based on ISO 31000:2018. The Risk Failure Mode Effect Analysis (RFMEA) method was used to determine the priority of failures, resulting in three critical risks: PLC module fault, instrument regulator problem, and leak tubing connection. After the critical risks were identified, the root causes were analyzed using the Fuzzy Fault Tree Analysis (FFTA) method with a numerical assessment of the Probability and severity of the risks. The analysis results show that the unavailability caused by PLC module faults reaches 27.51%, which is caused by a humid environment, instrument regulator problems contribute the highest at 75.4% due to icing plugging (Joule-Thomson effect), and leak tubing connections are caused by pipes exceeding their service life with a contribution of 83%. Mitigation actions were developed based on the Pareto analysis (80/20) approach to identify dominant problems, and mitigation strategies were formulated systematically using the 5W1H approach. One of the priority risk mitigation actions for the instrument regulator, namely icing plugging, was proposed by upsizing the pipes experiencing icing. This action is expected to increase gas flow rate and reduce the rapid cooling effect caused by gas expansion, thereby preventing ice formation in the instrument line, extending the regulator's service life, and reducing the risk of shutdown due to blockagesk of shutdown due to blockage

Item Type: Thesis (Masters)
Uncontrolled Keywords: Failure Mode Effect Analysis, Manajemen Risiko, Operasional, Offshore, Production Facility, Fuzzy Fault Tree Analysis, Operational Risk Management, Offshore, Production Facility
Subjects: T Technology > TS Manufactures
T Technology > TS Manufactures > TS173 Reliability of industrial products
T Technology > TS Manufactures > TS174 Maintainability (Engineering) . Reliability (Engineering)
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Industrial Engineering > 26101-(S2) Master Thesis
Depositing User: Ayu Adista Nurul Izza
Date Deposited: 14 Jul 2025 03:48
Last Modified: 15 Jul 2025 02:34
URI: http://repository.its.ac.id/id/eprint/119670

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