Analisa Pengaruh Sloshing Terhadap Damage Stability Setelah Penambahan Tangki LNG

Siahaan, Mardisuin (2019) Analisa Pengaruh Sloshing Terhadap Damage Stability Setelah Penambahan Tangki LNG. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Performa stabilitas kapal dipengaruhi oleh dua hal utama yaitu: a). Bentuk lambung kapal dan, b). Distribusi beban diatas kapal. Faktor yang pertama merupakan nilai konstan pada kapal-kapal yang telah selesai dibangun, sedangkan faktor yang kedua dapat berubah tergantung kondisi pembebanan kapal tersebut. Semacam perubahan distribusi beban tertentu dapat terjadi akibat sloshing yang terjadi didalam tangki yang terisi sebagian, fenomena tersebut dapat mempengaruhi kondisi stabilitas kapal pada saat mengalami kebocoran. Damage Stability atau lebih dikenal dengan stabilitas kapal bocor merupakan keadaan dimana kapal mengalami kebocoran pada kompartemen kapal sehingga kondisi stabilitas kapal menjadi terganggu. Penelitian ini merupakan studi pengaruh yang disebabkan oleh sloshing terhadap stabilitas kapal. Metode yang dipakai untuk menghitung damage stability adalah metode lost buoyancy. Metode ini mengasumsikan kondisi dimana ketika kapal mengalami kebocoran maka buoyancy kapal akan berkurang, hal ini terjadi karena ruang kosong dalam kapal akan terisi air sehingga tidak lagi menjadi bagian yang memberi kontrubusi pada besarnya buoyancy sehingga sarat kapal akan bertambah dan dapat mengakibatkan sinkage. Sesuai perhitungan SOLAS (Safety Of Life At Sea) Consolidated Edition 2014 Chapter II-1 Part B-1.terdapat dua index yang dibandingkan yaitu index Required index R = 0.77172 yang tergantung pada panjang penyekatan kapal dan Attained subdivision index A = 0.83736. Faktor pi menunjukkan maksimal 5 Zona kebocoran yang dapat diatasi oleh kapal agar tetap stabil. Dengan membandingkan nilai index A > R, maka dapat diketahui bahwa kapal ini telah memenuhi persyaratan SOLAS ================================================================================================ Ship stability performance is influenced by two main factors, namely: a). Ship's hull shape and, b). Load distribution on board. The first factor is the constant value of the ships that have been completed, while the second factor can change depending on the conditions of loading the ship. A kind of change in certain load distribution can occur due to sloshing that occurs in partially filled tanks, this phenomenon can affect the condition of ship stability when experiencing a leak. Stability Damage, better known as leaky ship stability, is a condition where the vessel has a leak in the ship's compartment so that the stability condition of the ship is disrupted. This study is a study of the effects caused by sloshing on the stability of the ship. The method used to calculate damage stability is the lost buoyancy method. This method assumes a condition where when the vessel has a leak the vessel buoyancy will decrease, this happens because the empty space in the vessel will be filled with water so it is no longer the part that contributes to the buoyancy so that the ship will increase and can result in sinkage. According to the calculation of SOLAS (Safety of Life at Sea) Consolidated Edition 2014 Chapter II-1 Part B-1. there are two indexes compared, namely index Required index R = 0.77172 which depends on the length of the lining and Attained subdivision index A = 0.83736. The pi factor shows a maximum of 5 leak zones that can be overcome by the ship to remain stable. By comparing the index value of A> R, it can be seen that this ship has fulfilled the SOLAS requirements.

Item Type: Thesis (Undergraduate)
Additional Information: RSSP 623.82 Sia a-1 2019
Uncontrolled Keywords: Damage Stability, Probabilistic, Lost Bouyancy ,Sloshing
Subjects: T Technology > T Technology (General) > T57.62 Simulation
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM761 Stability of ships
Divisions: Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User: Mardisuin Siahaan
Date Deposited: 16 Dec 2021 07:17
Last Modified: 16 Dec 2021 07:17
URI: https://repository.its.ac.id/id/eprint/61635

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