Analisis Tegangan Padeye Dan Sling Tipe Wire Rope Pada Proses Lifting Jacket Platform Dengan Variasi Keausan Pada Sling

Agustin, Della (2022) Analisis Tegangan Padeye Dan Sling Tipe Wire Rope Pada Proses Lifting Jacket Platform Dengan Variasi Keausan Pada Sling. Other thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Indonesia yang merupakan negara maritim menjadikan indonesia menjadi penghasil sumber daya alam terbanyak dari sektor perairan salah satunya yaitu minyak dan gas bumi. Dalam proses eksplorasi dan eksploitasi minyak dan gas bumi dibutuhkan struktur penunjang dalam keberlangsungan kegiatan tersebut salah satunya adalah jacket platform. Proses pembangunan jacket platform dimulai dari proses fabrikasi, load out dan instalasi. Tahapan proses tersebut tidak lepas dari metode Lifting. Lifting merupakan proses pemindahan struktur dengan menggunakan alat bantu crane. Pada proses lifting pemilihan dan perhitungan sling juga sangat penting dilakukan agar kegagalan struktur pada saat lifting dapat diminimalisir. Hal tersebut yang mendasari utnuk dilakukan analisis tegangan sling tipe wire rope pada proses lifting jacket platform dengan variasi keausan pada sling. Analisis tersebut dilakukan dengan bantuan software SACS 12.0. Hasil dari analisis tegangan sling didapatkan tegangan terbesar 796.802 kN pada lifting point ketiga. Pada variasi keausan pada sling yang dilakukan dengan melibatkan faktor keausan pada sling didapatkan pada keausan sling dengan Outside Diameter 2.75 in dengan faktor keausan 1.1 dan 1.2 telah melebihi batas dari MBL sling, sehingga sling dengan Outside Diameter 2.75 tidak dapat digunakan dalam proses lifting jacket platform ini. Dalam Tugas Akhir ini juga dilakukan analisis lokal terhadap padeye dengan menggunakan bantuan software ANSYS Workbench. Padeye yang digunakan memiliki diameter hole sebesar 105 mm. Didapatkan hasil dari tegangan von mises yang terjadi pada padeye sebesar 183.17 Mpa, dimana material yang digunakan merupakan baja ASTM A36 dengan tegangan izin 250 Mpa. Sehingga hasil Unity Check yang didapatkan sebesar 0.73
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Indonesia, which is a maritime country, makes Indonesia the largest producer of natural resources from the water sector, one of which is oil and gas. In the process of exploration and exploitation of oil and gas, a supporting structure is needed for the sustainability of these activities, one of which is a jacket platform. The jacket platform construction process starts from the fabrication process, load out and installation. The stages of the process cannot be separated from the Lifting method. Lifting is the process of moving structures using cranes. In the lifting process, the selection and calculation of slings is also very important so that structural failure during lifting can be minimized. This is the basis for conducting a stress analysis on wire rope type slings in the lifting jacket platform process with variations in wear on the slings. The analysis was carried out with the help of SACS 12.0 software. The results of the sling stress analysis obtained the greatest stress of 796.802 kN at the third lifting point. In the variation of wear on the sling which is carried out by involving the wear factor on the sling, it is found that the wear of the sling with Outside Diameter 2.75 in with a wear factor of 1.1 and 1.2 has exceeded the limit of the MBL sling, so slings with Outside Diameter 2.75 cannot be used in this lifting jacket platform process. . In this final project, local analysis of padeye is also carried out using the ANSYS Workbench software. The padeye used has a hole diameter of 105 mm. The result of the von Mises stress that occurs in the padeye is 183.17 Mpa, where the material used is ASTM A36 steel with a allowable stress of 250 Mpa. So the Unity Check results obtained are 0.73

Item Type:	Thesis (Other)
Additional Information:	RSKe 627.98 Agu a-1
Uncontrolled Keywords:	lifting, sling, padeye
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:	EKO BUDI RAHARJO
Date Deposited:	13 Dec 2022 03:36
Last Modified:	13 Dec 2022 03:36
URI:	http://repository.its.ac.id/id/eprint/95217

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