Risk-Based Integrity Management System for Oil Tanker Hull Structure Due To Corrosion

Kurniawan, Henry (2021) Risk-Based Integrity Management System for Oil Tanker Hull Structure Due To Corrosion. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Konstruksi lambung kapal mengalami penurunan kekuatan dalam siklus hidupnya karena korosi dan fatigue. Oleh karena itu, risiko kegagalan struktural juga meningkat selama masa pakainya jika pemeliharaan tidak dilakukan dengan benar. Kegiatan ini, di sisi lain, dibatasi oleh anggaran. Oleh karena itu, sangat penting bagi pemilik kapal untuk menyusun program perawatan yang optimal. Ide dari penelitian ini adalah untuk menemukan cara terbaik untuk menjaga integritas struktural lambung kapal. Model korosi bergantung waktu telah dikembangkan untuk tujuan prediksi kegagalan, berdasarkan data historis pengurangan ketebalan pelat. Skenario kegagalan dilakukan pada kekuatan lokal, global dan fatigue. Penelitian ini menerapkan penilaian risiko semi-kuantitatif disertai dengan analisis keandalan untuk memberikan perencanaan pemeliharaan yang strategis dengan menurunkan risiko yang akan dihadapi. Oleh karena itu, memastikan layanan kapal yang tidak terputus sepanjang umur layanan. Tujuan dari penelitian ini adalah untuk membuat prototipe dasar program informasi risiko untuk mengevaluasi tingkat risiko komponen lambung yang dijadikan acuan untuk menyesuaikan interval inspeksi tanpa mengabaikan persyaratan keselamatan, mengetahui sisa masa pakai dan kemampuan untuk memprediksi laju korosi. Dimungkinkan juga untuk melakukan penilaian risiko di kapal pada tahun ke-n setelah konstruksi menggunakan aplikasi ini. ===================================================================================================== The ship hull construction suffered a decrease in strength performance in its life cycle due to corrosion and fatigue. Therefore, the risk of structural failure also rises during the extended service life if maintenance is not performed properly. These activities are, on the other hand, constrained by the budget. That is why it is crucial for ship owners to arrange optimum maintenance program. The idea of this research is to find the best way to keep the hull's structural integrity. A time dependent corrosion model has been developed for failure prediction purposes, based on the historical data of plate thickness reduction. Failure scenarios are carried out on local, global and fatigue strength. This research adopted a semi-quantitative risk assessment along with reliability analysis to give strategic maintenance planning by lowering the risks that would be encountered. Hence, ensuring uninterrupted service of the ship throughout the service life. The goal of this study is to establish basic prototipe of risk informed program to evaluate the risk level of components of hull that guides to adjust inspection intervals without avoiding safety requirements, knowing the remaining useful life and ability to predict the corrosion wastage. It is also possible to do a risk assessment on the ship in the nth year after construction using this application.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Hull Integrity Management, Risk-Based Inspection, Risk Assessment, Corrosion Degradation, Remaining Useful Life, Probability of Failure.
Subjects: Q Science > QA Mathematics > QA76.9D338 Data integration
T Technology > T Technology (General) > T174.5 Technology--Risk assessment.
T Technology > TA Engineering (General). Civil engineering (General) > TA418.75 Corrosion-resistant materials
T Technology > TC Hydraulic engineering. Ocean engineering > TC1665 Offshore structures--Materials.
T Technology > TH Building construction > TH3351 Maintenance and repair
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM163 Hulls (Naval architecture)
Divisions: Faculty of Marine Technology (MARTECH) > Marine Engineering > (S2) Master Theses
Depositing User: Henry Kurniawan
Date Deposited: 25 Aug 2021 04:43
Last Modified: 25 Aug 2021 04:43
URI: https://repository.its.ac.id/id/eprint/90499

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