Bursting Pressure pada Pipa yang Mengalami Korosi Eksternal Jamak secara Radial

Damarjati, Asta (2025) Bursting Pressure pada Pipa yang Mengalami Korosi Eksternal Jamak secara Radial. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Industri minyak dan gas melibatkan berbagai tahapan penting, mulai dari eksplorasi, produksi, hingga distribusi hidrokarbon. Salah satu sarana transportasi utama yang digunakan adalah pipa bawah laut. Dalam pengoperasiannya, pipa sangat rentan terhadap kerusakan akibat korosi eksternal yang dipicu oleh lingkungan laut. Korosi tersebut menyebabkan penipisan dinding pipa sehingga kekuatan struktural pipa menurun. Kondisi ini dapat menghasilkan cacat berupa kehilangan material yang berpasangan secara radial di permukaan luar pipa. Apabila tekanan internal yang bekerja melebihi kapasitas pipa, maka kegagalan berupa pecahnya pipa (bursting pressure) berpotensi terjadi. Untuk itu, diperlukan kajian mengenai pengaruh cacat korosi eksternal sepasang secara radial terhadap kemampuan pipa menahan tekanan internal. Penelitian ini dilakukan melalui pemodelan numerik berbasis Finite Element Analysis (FEM) dengan perangkat lunak simulasi dan hasilnya dibandingkan dengan pendekatan berbasis persamaan empiris yang tercantum dalam standar internasional, yaitu DNV-RP-F101. Analisis ini tidak hanya bertujuan untuk mengetahui batas tekanan pecah pada pipa yang mengalami cacat, tetapi juga untuk memberikan gambaran mengenai perbedaan hasil antara pendekatan numerik dan standar kode yang umum digunakan. Hasil kajian ini diharapkan dapat memberikan pemahaman lebih lanjut mengenai pengaruh korosi eksternal terhadap nilai bursting pressure serta menjadi acuan dalam evaluasi keandalan pipa bawah laut yang beroperasi pada kondisi kritis. Dengan demikian, penelitian ini dapat berkontribusi dalam mendukung praktik keselamatan dan keandalan sistem transportasi migas di lingkungan laut yang penuh risiko.
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The oil and gas industry involves several critical stages, ranging from exploration and production to the distribution of hydrocarbons. One of the primary transportation facilities employed is subsea pipelines. During their operation, pipelines are highly susceptible to damage caused by external corrosion triggered by the marine environment. Such corrosion leads to wall thinning, which consequently reduces the structural strength of the pipeline. This condition can result in paired radial defects on the external surface due to localized material loss. When the internal pressure exceeds the pipeline’s capacity, failure in the form of bursting pressure may occur. Therefore, it is essential to conduct an investigation into the effect of paired external radial corrosion defects on the pipeline’s ability to withstand internal pressure. This study was carried out through numerical modeling based on Finite Element Method (FEM) using simulation software, and the results were compared with an empirical equation approach as stated in the international standard DNV-RP-F101. The analysis aims not only to determine the bursting pressure limit of corroded pipelines but also to provide an overview of the differences between numerical approaches and widely applied standard codes. The outcomes of this study are expected to provide deeper insights into the influence of external corrosion on bursting pressure values, as well as to serve as a reference in evaluating the reliability of subsea pipelines operating under critical conditions. Thus, this research can contribute to enhancing safety practices and reliability in offshore hydrocarbon transportation systems, which are inherently exposed to high-risk environments.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Bursting Pressure, External Corrosion, Finite Element Method (FEM), Bursting Pressure, External Corrosion, Finite Element Method (FEM)
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC1665 Offshore structures--Materials. T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Asta Razqi Damarjati
Date Deposited:	17 Jun 2026 03:34
Last Modified:	17 Jun 2026 03:34
URI:	http://repository.its.ac.id/id/eprint/133658

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