Analisis Pemilihan Metode Lifting Pada Proses Decommissioning Struktur Jacket Berbasis Risiko

Rafif, Athallah (2025) Analisis Pemilihan Metode Lifting Pada Proses Decommissioning Struktur Jacket Berbasis Risiko. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam proses eksplorasi dan esksploitasi minyak dan gas diperlukan fasilitas yang mendukung keberlangsungan kerjanya, salah satu yang paling banyak digunakan adalah struktur jacket platform. Setiap struktur jacket yang sudah melewati umur service life nya harus dilakukan decommissioning agar tidak membahayakan lingkungan sekitar. Dalam proses decommissioning terdapat beberapa kegiatan, diantaranya Well plug and abandonment, Cutting, Lifting, Loading dan Transport. Dalam proses decommissioning, penentuan metode lifting sangat menentukan keseluruhan aspek teknis pada saat pelaksanaan decommissioning, selain itu diperlukan juga analisis kekuatan sling untuk menentukan karakteristik sling dan responnya terhadap beban yang ada. Pada tugas akhir ini, dilakukan analisis pemilihan metode sling dan didapatkan bahwa metode yang paling efisien adalah single lifting, dimana dari hasil analisis lifting pada software SACS menunjukan bahwa semua sling sudah kuat dengan beban yang bekerja pada sling paling besar berada di kondisi SHF2 dengan beban Design Sling Load (DSL) sebesar 309.2 mT dengan UC sebesar 0.81. Setelahnya dilakukan analisis keandalan dengan hasil keandalan sling sebesar 92.3%.
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In the process of oil and gas exploration and exploitation, facilities are needed to support the sustainability of its work, one of the most widely used is the platform jacket structure. Every jacket structure that has passed its service life must be decommissioned so as not to endanger the surrounding environment. In the decommissioning process there are several activities, including Well plug and abandonment, Cutting, Lifting, Loading and Transport. In the decommissioning process, determining the lifting method greatly determines the overall technical aspects during the implementation of decommissioning, in addition, sling strength analysis is also needed to determine the characteristics of the sling and its response to the existing load. In this final project, an analysis of the selection of sling methods was carried out and it was found that the most efficient method was single lifting, where the results of the lifting analysis on the SACS software showed that all slings were strong with the largest load working on the sling in the SHF2 condition with a Design Sling Load (DSL) of 309.2 mT with a UC of 0.81. After that, a reliability analysis was carried out with a sling reliability result of a total 92.3%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Analisis Risiko, Decommissioning, Lifting, Risk Analysis
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Athallah Rafif
Date Deposited:	18 Jul 2025 03:23
Last Modified:	18 Jul 2025 03:23
URI:	http://repository.its.ac.id/id/eprint/119988

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