Analisis Pengaruh Sudut Pre-Tension Mooring Lines SPM Terhadap Tegangan dan Kekuatan Subsea Marine Hose

Muthi'ah, Rabiatul (2021) Analisis Pengaruh Sudut Pre-Tension Mooring Lines SPM Terhadap Tegangan dan Kekuatan Subsea Marine Hose. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

Text 04311740000078-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2023. Download (9MB) | Request a copy

Abstract

Kegiatan industri minyak dan gas telah berkembang seiring dengan majunya teknologi, salah satu bentuknya adalah dengan adanya sistem tambat. Sistem tambat merupakan sebuah rangkaian yang berfungsi menjaga stasiun kapal atau platform terapung di semua kedalaman air. Saat ini, banyak sekali jenis tambat yang dapat digunakan, salah satunya adalah Single Point Mooring (SPM). SPM sendiri terdiri dari berbagai macam jenis mooring leg, serta komponen-komponen pendukung lainnya seperti subsea hose atau riser. Subsea hose dan mooring lines sangat berkaitan karena dalam pengaplikasiannya panjang mooring lines juga menentukan besar offset atau batasan gerak dari SPM tersebut, sedangkan subsea hose juga memiliki batasan maksimal tarikan yang diakibatkan oleh gerakan SPM. Selain panjang mooring lines, faktor lainnya yaitu sudut pretension. Oleh karena itu pada penelitian kali dilakukan analisis dengan memvariasikan besaran sudut pretension (45°, 50°, 55°, 60°) pada kondisi ekstrim serta pada kondisi operasi, dengan pembebanan in-line, meninjau gaya tarik pada mooring lines serta riser. Semakin besar sudut, maka gaya tarik akan semakin kecil sehingga offset semakin besar, begitu pula sebaliknya.
=====================================================================================================
The oil and gas industry have developed along with advances in technology, so does the mooring system. Mooring system is a series that functions to keep the ship station or floating platform at all water depths. Currently, there are many types of moorings that can be used, one of which is Single Point Mooring (SPM). SPM itself consists of various types of mooring legs, as well as other supporting components such as subsea hose or riser. Subsea hose and mooring lines are closely related because in the application, the length of the mooring lines also determines the offset or limitation of motion of the SPM, while the subsea hose also has a maximum limit of pull caused by the movement of the SPM. In addition to the length of the mooring lines, another factor is the pre-tension angle. Therefore, in this study, an analysis was carried out by varying the pre-tension angle (45°, 50°, 55°, 60°) under extreme conditions and in-line loading, by reviewing the tensile forces on the mooring lines and risers. The larger the angle, the smaller the tensile force, so the offset would be larger, and vice versa. The results of this study indicate that the pre-tension angle applied must be appropriate so that the tensile force on the mooring lines that occurs can also be appropriate.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	SPM, sudut pretension, sudut deklinasi, subsea hose, offset, gaya tarik tali tambat SPM, pre-tension angle, declination, subsea hose, offset, mooring line tension
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Rabiatul Muthi'ah
Date Deposited:	18 Aug 2021 09:53
Last Modified:	18 Aug 2021 09:53
URI:	http://repository.its.ac.id/id/eprint/87078

Actions (login required)

View Item