Wijaya, Wisnu (2015) Studi Konfigurasi Tipe Riser Terhadap KekuatanRiser (Studi Kasus : Spm FPSO Seagood 101). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
4309100084-Undergraduated Thesis.pdf - Published Version Download (1MB) | Preview |
Abstract
Dewasa ini bangunan lepas pantai jenis apung lebih dikembangkan daripada
bangunan terpancang karena lebih ekonomis dan kemudahannya untuk
dipindahkan dari satu tempat ke tempat yang lain. Sehubungan dengan itu analisis
tentang bangunan apung perlu dilakukan. Pada tugas akhir ini dibahas analisis
kekuatan riser pada single point mooring FPSO “Seagood 101” dengan variasi
konfigurasi riser, yaitu free hanging catenary, lazy-s, dan steep-s di perairan
Belanak, Natuna. Tinjauan khusus dalam analisis bertujuan untuk
mengidentifikasi perilaku gerak FPSO “Seagood 101” dan buoy, untuk
selanjutnya dapat diperoleh tension maksimum dari setiap mooring lines yang
menambat buoy, sehingga akhirnya akan diketahui kekuatan riser di setiap
konfigurasi. Analisis perilaku gerak dari FPSO dan buoy dilakukan dengan
model matematis berbasis teori difraksi 3-dimensi. Untuk menganalisis tension
tali tambat dan kekuatan riser digunakan perangkat simulasi beban kombinasi
orde-2 dalam domain waktu. Hasil analisis perilaku gerak FPSO ”Seagood 101”
dan buoy menunjukkan bahwa untuk gerakan translasi surge, sway, dan heave
per satuan amplitude gelombang tidak terlalu besar, dengan nilai rata-rata 1,2
m/m. Sedangkan untuk gerakan rotational roll pada FPSO memiliki nilai yang
tinggi, yaitu 9.39 deg/m. Untuk tension maksimum, arah pembebanan 00 pada
Steep-S R1 memiliki nilai paling tinggi diantara riser yang lain, dengan tension
maksimum sebesar 9.37 ton.
===============================================================================================
Nowadays floating structures have been m o r e developed t h a n the fixed
structures considering the economical problem and flexibility to be relocated
from one site to another. In this relation analyses with regards to floating
structures are necessary to be carried out. This final project discusses about the
analysis of riser strength on the single buoy mooring of FPSO “Seagood
101”. The configuration of riser type are free hanging catenary, lazy-s, and steep-s
at Belanak, Natuna. Special examination is aiming at identification of the motion
behavior of the FPSO “Seagood 101” and the buoy, afterward to obtain the
maximum tension of each mooring line that hold the buoy. Therefore finally it
could be figured out the strength of variety configuration. Analysis of the FPSO
and buoy motion behaviors are carried out by a mathematical model developed
on the basis of the 3-dimensional diffraction theory, and to analyze the tension of
mooring line and the riser strength is utilizing the software for simulating 2ndorder
combination loads in time domain. Results of the analysis of FPSO
“Seagood 101” and buoy motion behaviors exhibit for translational motion surge,
sway, and heave per wave amplitude. Yield an average values of 1.2 m/m,
whereas for rotational roll motion of the FPSO reaching a reasonably high
value, that is 9.39 deg/m. Regarding to the maximum tension, load propagation
at direction 0o on Steep-S R1 apparently has the largest value in comparison to
the other riser configuration, amounted 9.37 ton.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKe 627.22 Wij s |
| Uncontrolled Keywords: | FPSO; SPM; riser; tension; free hanging catenary; lazy-s; steep-s |
| 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: | Mr. Tondo Indra Nyata |
| Date Deposited: | 14 Aug 2017 01:48 |
| Last Modified: | 24 Aug 2018 07:35 |
| URI: | http://repository.its.ac.id/id/eprint/48465 |
Actions (login required)
 |
View Item |