Analisis Risiko Pipa Bawah Laut dengan Metode Fishbone Diagram dan Fuzzy Failure Mode and Effect Analysis (FMEA)

Izzati, Faza (2022) Analisis Risiko Pipa Bawah Laut dengan Metode Fishbone Diagram dan Fuzzy Failure Mode and Effect Analysis (FMEA). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pipa bawah laut merupakan salah satu sarana transportasi minyak mentah, gas alam, dan fluida yang paling sering digunakan. Namun karena media yang dilewati pipa cukup beragam dalam masa operasinya, pipa bawah laut tidak dapat terhindar dari berbagai potensi bahaya dan risiko. Beberapa faktor yang dapat menimbulkan risiko pada pipa berasal dari efek eksternal, penurunan atau penarikan jangkar kapal, kapal kandas, dan kapal tenggelam. Manajemen risiko merupakan suatu hal yang cukup krusial dalam usaha menjaga keselamatan pipa. Kegagalan pada pipa dapat dihindari dengan melakukan analisis risiko. Penelitian ini bertujuan untuk mengetahui tingkat risiko yang terjadi pada pipa serta mempersiapkan saran pengendalian risiko. Pipeline yang dianalisis merupakan pipa bawah laut yang berlokasi di Lapangan Terang Sirasun Batur (TSB). Diagram Fishbone dipilih untuk mengidentifikasi risiko pipa tersebut. Penilaian risiko dilakukan menggunakan dua metode yaitu Failure Mode and Effect Analysis (FMEA) tradisional dan fuzzy FMEA. Dalam analisis fuzzy FMEA diterapkan dua macam dasar aturan output fuzzy yang berbeda. Dari hasil perhitungan dengan FMEA tradisional didapatkan bahwa RPN tertinggi sebesar 144 terdapat pada mode kegagalan gangguan dari luar. Sedangkan dengan fuzzy FMEA, RPN tertinggi sebesar 9 dan 6 terletak pada mode kegagalan bencana alam. Matriks risiko disusun untuk menentukan posisi zona kegagalan. Ditemukan bahwa terdapat 10 mode kegagalan yang terletak pada zona ALARP dan 3 lainnya termasuk dalam kategori risiko yang dapat diterima.
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Subsea pipelines are one of the most frequently used means of transportation of crude oil, natural gas, and fluids. However, because the media passed by the pipeline is quite diverse in its operating life, the pipeline cannot be avoided from various potential dangers and risks. Some of the factors that can pose a risk to the pipeline come from external effects, the decrease or withdrawal of the ship's anchor, the ship ran aground, and the ship sank. Risk management is quite crucial in an effort to maintain pipeline safety. Failures in the pipeline can be avoided by conducting a risk analysis. This study aims to determine the level of risk that occurs in the pipeline and prepare risk control advice. The pipeline analyzed is an subsea pipeline located in the Terang Sirasun Batur Field (TSB). The Fishbone diagram was selected to identify factors and causes of subsea pipeline damage. Risk assessment is carried out using two methods, namely Traditional Failure Mode and Effect Analysis (FMEA) and Fuzzy FMEA. In the Fuzzy FMEA analysis, two different fuzzy output rules are applied. From the results of calculations with traditional FMEA, it was found that the highest RPN of 144 was found in the failure mode of outside interference. Meanwhile, with fuzzy FMEA, the highest RPN of 9 and 6 lies in the failure mode of natural disasters. A risk matrix is compiled to determine the position of the failure zone. It was found that 10 failure modes lie in the ALARP zone and the other 3 are considered as acceptable risk.

Item Type:	Thesis (Other)
Additional Information:	RSKe 665.544 Izz a-1 2022
Uncontrolled Keywords:	analisis risiko, failure mode and effect analysis, fuzzy FMEA, pipa bawah laut, failure mode and effect analysis, fuzzy FMEA, risk analysis, subsea pipeline
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ930 Pipelines (General). Underwater pipelines. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7870.23 Reliability. Failures
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	- Davi Wah
Date Deposited:	08 Jul 2024 04:50
Last Modified:	18 Oct 2024 03:31
URI:	http://repository.its.ac.id/id/eprint/107972

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