Analisa Keandalan Struktur Stinger 145 M – Jascon 18 Menggunakan Simulasi Monte Carlo

., Saprizal (2016) Analisa Keandalan Struktur Stinger 145 M – Jascon 18 Menggunakan Simulasi Monte Carlo. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Metode transportasi minyak dan gas lebih efektif dan efisien menggunakan pipeline. Dengan menggunakan pipeline dapat mengurangi seperlima dari biaya menggunakan transportasi tanker. Pada instalasi pipeline metode S-lay, biasanya pipa akan bertumpu pada alat pendukung yang disebut stinger. Faktor beban yang diterima oleh stinger terjadi secara tidak pasti. Sehingga perlunya analisa keandalan terhadap struktur stinger. Simulasi Monte Carlo digunakan dalam memecahkan analisa keandalan tersebut. Pada penelitian ini akan menggunakan pipa berdiameter 42 inch dengan batas kedalaman laut 1000 m. Stinger yang digunakan sepanjang 145m – Jascon 18 milik SEA TRUCK GRUP. Hasil penelitian ini akan memperoleh response amplitude operator (RAO) akibat beban lingkungan dan stinger, tegangan yang terjadi pada stinger saat diinstalasi, dan keandalan struktur stinger. Berdasarkan analisis diketahui bahwa struktur stinger mempengaruhi hasil RAO. Analisis tegangan yang dilakukan, didapatkan hasil distribusi tegangan von mises mengikuti distribusi weibull dengan mean sebesar 17.108 Ksi dan standar deviasi sebesar 11.518 Ksi. Berdasarkan hasil analisis dan perhitungan keandalan struktur stinger didapatkan keandalan sebesar 0.98 pada jumlah simulasi 100 kali, keandalan sebesar 0.986 pada jumlah simulasi 500 kali, keandalan sebesar 0.983 pada jumlah simulasi 1000 kali, keandalan sebesar 0.982 pada jumlah simulasi 3000 kali, keandalan sebesar 0.981 pada jumlah simulasi 10000 kali ================================================================================================= Oil and gas transportation is more efficient by using pipeline. The using of pipeline can reduce 20% transport cost than tanker. The pipeline installation of S-lay method, usually the pipeline will rest on a supporting tool called a stinger. Load factors received by stinger occurs is uncertain. So, reliability analysis of the structure stinger is needed. Monte Carlo simulation is used to solve the reliability analysis. This research will use a 42-inch diameter pipeline with a limit of 1000 m sea depth. The stinger is 145m - Jascon 18 belongs to SEA TRUCK GROUP. This study will obtain response amplitude operator (RAO) of Jascon 18 include stinger, member stress at stinger that occurs at the time pipeline is installed, and the reliability of structural. Based on the analysis show that the structure of stinger affect the RAO results. The results obtained von mises stress distribution follows weibull distribution with a mean of 17.108 Ksi and a standard deviation of 11.518 Ksi. Based on the analysis and calculation of the reliability of structures stinger obtained reliability of 0.98 in the amount of simulations 100 times, reliability of 0.986 in the amount of simulations 500 times, reliability of 0.983 in the amount of simulation 1000 times, the reliability of 0.982 in the amount of simulation 3000 times, reliability of 0.981 in the amount of simulation 10000 times

Item Type: Thesis (Undergraduate)
Additional Information: RSKe 518.282 Sap a
Uncontrolled Keywords: keandalan, tegangan, RAO, intalasi pipa bawah laut, stinger
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA169 Reliability (Engineering)
Divisions: Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 29 May 2020 01:24
Last Modified: 29 May 2020 01:24
URI: http://repository.its.ac.id/id/eprint/76050

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