Widodo, Josefino Eleonard (2024) Analisis Kekuatan Padeye Pada Proses Lifting Topside Pada Tahap Loadout Dengan Kasus COG Shift dan Skew Load. Other thesis, Institut Teknologi Sepuluh Nopember.
Text
5020201034-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2026. Download (21MB) | Request a copy |
Abstract
Loadout adalah salah satu operasi dalam analisis Pre-service struktur lepas pantai yang akan diinstal pada lokasi operasi. Proses lifting dalam loadout digunakan untuk memindahkan struktur lepas pantai dari yard fabrikasi menuju barge untuk dilanjutkan proses transport. Tujuan dari penelitian ini adalah menganalisis suatu struktur topside lepas pantai saat kegiatan lifting mulai dari kekuatan struktur itu sendiri sampai komponen rigging seperti sling, shackle, dan padeye. Pada kegiatan lifting struktur topside, seringkali terjadi pergeseran titik berat sehingga terjadi perbedaan beban yang diangkat oleh komponen rigging. Selain itu kasus skew load juga berpengaruh pada kekuatan rigging, dimana sepasang sling umumnya mendapat gaya yang lebih besar dibanding satunya akibat dari asimetri rigging, eksentrisiti dari hook prong, dan faktor lainnya. Pendekatan pada analisis ini akan dilakukan dalam keadaan statis sehingga penelitian ini dilakukan dengan mempertimbangkan kasus pergeseran titik berat dan skew load, serta faktor beban dinamis dan faktor kemanan lainnya. Analisis secara lokal juga dilakukan pada struktur padeye untuk mengetahui integritas dari struktur tersebut. Hasil penelitian ini diharapkan dapat dijadikan rekomendasi pada saat melakukan kegaitan lifting topside dengan kondisi COG shift dan Skew Load. Hasil analisis akan dilakukan perbandingan antara tegangan yang terjadi dengan tegangan yang diijinkan, sehingga dapat dikategorikan bahwa kegiatan loadout layak untuk dilakukan.
==================================================================================================================================
Loadout is one of the operations in the pre-service analysis of offshore structures that will be installed at the operating location. The lifting process in loadout is used to move offshore structures from the fabrication yard to the barge to continue to the transportation process. This research aims to analyze an offshore topside structure during lifting activities starting from the strength of the structure itself to rigging components such as slings, shackles and padeyes. During topside structure lifting activities, the center of gravity often shifts results differences in the load lifted by the rigging components. Apart from that, skew load cases also affect rigging strength, where a pair of slings generally experiences a greater force than one due to rigging asymmetry, the eccentricity of the hook prong, and other factors. The approach to this analysis will be carried out in static conditions so that this research is carried out by considering cases of center of gravity shift and skew load, as well as dynamic load factors and other safety factors. Local analysis was also carried out on the padeye structure to determine the integrity of the structure. It is hoped that the results of this research can be used as recommendations when carrying out topside lifting activities with COG shift and Skew Load conditions. The results of the analysis will be compared between the stress that occurs and the allowable stress so that it can be categorized as whether the loadout activity is feasible to carry out.
Item Type: | Thesis (Other) |
---|---|
Uncontrolled Keywords: | Lifting, Padeye, COG Shift, Skew Load |
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: | Josefino Eleonard Widodo |
Date Deposited: | 23 Jul 2024 04:12 |
Last Modified: | 23 Jul 2024 04:12 |
URI: | http://repository.its.ac.id/id/eprint/108645 |
Actions (login required)
View Item |