Studi konsep struktur penopang turbin PLTA untuk FSO ladinda

Pusuratama, Dimas Meidhika (2016) Studi konsep struktur penopang turbin PLTA untuk FSO ladinda. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Ketahanan energi dunia sekarang menunjukkan penurunan khususnya energi fosil. Kedepan kebutuhan energi semakin besar disebabkan laju pertumbuhan manusia. Sistem penyediaan energi listrik yang dapat memenuhi kriteria di atas adalah sistem konversi energi yang memanfaatkan sumber daya energi terbarukan, seperti: matahari, angin, air, biomas dan lain sebagainya. FSO Ladinda salah satu fasilitas marine yang milik perusahaan EMP Malacca Strait S.A. yang digunakan sebagai penunjang kegiatan operasional eksplorasi dan eksploitasi minyak dan gas bumi. Terletak di Selat Lalang, Indonesia mempunyai potensi untuk menghasilkan energi listrik dari arus laut. Akan tetapi, terdapat pertimbangan apabila 18 unit turbin tersebut dapat ditopang dengan menggunakan struktur terpancang berjenis supporting platform. Oleh karena itu, dibutuhkan analisa perancangan struktur secara statis dan dinamis untuk menghasilkan perancangan yang baik. Dari hasil penempatan turbin berdasarkan jarak aman yang telah ditentukan didapatkan luasan dek sebesar 15300 ft2 dengan jumlah kaki 12 buah. Setelah perhitungan serta pemodelan analisa statis dilakukan, didapatkan respon statis dengan Unity Check terbesar kondisi operasi sebesar 0.65 pada secondary girder dan kondisi badai sebesar 0.56 pada secondary girder pula. Pada analisa statis akibat beban arus tambahan, terjadi tegangan maksimum pada struktur pada member 003P-103P dengan ID member PL1 sebesar -24,22 ksi pada load condition 6002. Sedangkan Joint Displacment terbesar terjadi pada simpul dengan joint ID 0008 sebesar 7,474 in, pada load condition 6002 pada kondisi badai. =============================================================================================== World energy security is showing a decline of fossil energy in particular nowdays. In the future energy needs of the greater due to the growth rate of a human. Electrical energy supply system that can meets the above criteria are energy conversion systems that utilize renewable energy resources, such as solar, wind, water, biomass and others. FSO Ladinda one of the marine facility that is owned by the company EMP Malacca Strait SA which is used to support operational activities of exploration and exploitation of oil and gas. Located in the Strait of Lalang, Indonesia has the potential to generate electricity from ocean currents. However, there is a consideration if the turbine unit 18 can be supported by using a fixed structure supporting various platforms. Therefore, the required structural design analysis of static and dynamic to produce good design. From the results of the placement of the turbine based on a predetermined safe distance obtained a deck area of 15300 ft2 with a number of legs 12 pieces. After calculation and modeling of static analysis is done, the response obtained with Unity Check biggest static operating conditions of 0.65 in secondary girder and storm conditions of 0.56 in secondary girder anyway. In the analysis of static load due to additional current that affect on turbine, maximum force occurs in the structure of the member 003P-103P with the member ID PL1 of -24.22 ksi on load condition 6002. The largest displacement joint occur in the joint node ID 0008 amounted to 7.474 in, on the load condition 6002 in storm conditions.

Item Type: Thesis (Undergraduate)
Additional Information: RSKe 621.402 Pus s
Uncontrolled Keywords: Fixed Platfrom, Static Response, FSO Ladinda, Selat Lalang, Turbin Darrieus BPPT LHI
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM773 Ship propulsion, Electric
Divisions: Faculty of Marine Technology > Ocean Engineering > (S1) Undergraduate Theses
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 29 Aug 2017 08:47
Last Modified: 27 Dec 2018 04:23
URI: http://repository.its.ac.id/id/eprint/48781

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