DESIGN AND UPENDING ANALYSIS OF FOUR LEG JACKET PLATFORM ON THE NATUNA SEA
Muhammad Noor Yuliansyah dan Ricky Lukman Tawekal
Program Studi Teknik Kelautan
Fakultas Teknik Sipil dan Lingkungan
Institut Teknologi Bandung
Jl. Ganesha 10 Bandung 40132
ABSTRACT
This final project aims to obtain an optimum design of four leg jacket platform on the Natuna Sea and feasible jacket upending scenario based on GL Noble Denton 0028/ND “Guidelines for the Transportation and Installation of Steel Jackets” criteria and compare the technical terms for the controlled ballasting method. Before upending analysis conducted, first the structure to be declared eligible to be constructed able to resist earthquake force and meet the service life design, 20 years, based on American Petroleum Institute “Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms” (API RP2A) with in place analysis, seismic analysis and fatigue analysis. Buoyancy tank flooding scheme provide upending force for controlled ballasting upending method. The results shows the structure is able to resist external forces (environment, equipment, earthquake, continuous wave, etc) and the controlled ballasting upending method possibly to be conducted based on DNV GL Noble Denton No. 0028/ND criteria.
Keywords: in-place, seismic, fatigue, upending, ballasting
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