Muttaqin, Ahmad Sabilul (2018) Studi Numerik dan Eksperimen Olah Gerak Struktur SPAR Helical Strakes dan Dinamika Tegangan Sistem Tambat Tipe Taut pada Kondisi Kegagalan Tali Tambat. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
04311440000022-Undergraduate_Thesis.pdf - Accepted Version Download (4MB) | Preview |
Abstract
Teknologi SPAR Platform dianggap lebih efektif biaya dan fleksibel di laut dalam. SPAR (Single Point Anchor Reservoir) merupakan struktur lepas pantai berbentuk silinder yang berfungsi untuk melakukan pengeboran, produksi, pemprosesan, dan penyimpanan minyak bumi. Sedangkan helical strakes merupakan sebuah piranti yang digunakan untuk mengurangi gaya gelombang dan arus yang mengenai struktur. Untuk menjaga SPAR tetap pada posisi awal yang direncanakan dibutuhkan tali tambat mengalami kegagalan maka dapat menyebabkan kegagalan pada SPAR. Struktur SPAR dengan helical strakes mempunyai respon lebih kecil pada mode gerak heave dan pitch, namun mempunyai respon lebih besar pada gerak surge dibandingkan dengan SPAR tanpa helical strakes. Untuk kondisi accidental metode numeris dan eksperimen tension maksimum terjadi pada tali tambat yang berada di posisi depan arah datang gelombang, dengan nilai 893.06 ton pada metode numeris dan 914.06 ton pada metode eksperimen. Berdasarkan API RP 2 SK tension maksimum pada metode numeris dan metode eksperimen masih dapat diterima karena masih dibawah tension yang diijinkan sebesar 960 ton. =========================================================================================================
SPAR Platform Technology is considered more effective cost and flexible in the deep sea. SPAR (Single Point Anchor Reservoir) is a cylindrical offshore structure that serves to drill, produce, process and storage. While helical strakes are a device used to reduce the force of the wave and current that crashing into structure. To keep the SPAR at a an initial position, a mooring connected to the seabed anchor is required but if the moor fails it can cause a failure on the SPAR. The SPAR structure with helical strakes has a smaller response to heave and pitch motion, but has a greater response to surge motion than SPAR without helical strakes. For accidental conditions numerical method and experiments method, maximum tension occur on the line in the forward position of the incident wave direction, with a value of 893.06 tons in the numerical method and 914.06 in the experimental methods. Based on API RP 2 SK the maximum tension on numerical methods and experimental methods is still acceptable because it is still below the allowable tension of 960 tons.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKe 627.23 Mut s-1 3100018078842 |
| Uncontrolled Keywords: | SPAR, Tension, Accidental, Helical Strakes |
| 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: | Ahmad Sabilul Muttaqin |
| Date Deposited: | 27 Jul 2018 03:24 |
| Last Modified: | 25 Nov 2020 05:22 |
| URI: | http://repository.its.ac.id/id/eprint/54144 |
Actions (login required)
 |
View Item |