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All Journal International Journal of Marine Engineering Innovation and Research
Murdjito
Institut Teknologi Sepuluh Nopember
Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Effect of Mooring System Configuration to Flexible Riser Tension Eko Budi Djatmiko; Murdjito; Kunthi U.D. Prabawani
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 4 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i4.5104

Abstract

Floating Storage and Offloading is a floating structure that functions as hydrocarbon temporary storage from wells before being distributed to tankers and carried to production facilities on shore. The important components used to support FSO operations are mooring systems and risers. The mooring system is used to limit FSO movement due to environmental loads. Riser was carried out hydrocarbons from the well to FSO This study aims to analyze the effect of mooring system configurations on flexible riser tension. These variations consist of spread mooring, conventional buoy mooring (4 buoy), and two other variations combine spread mooring and conventional buoy mooring. This analysis shows that the mooring system with 4 buoys has the largest flexible riser tension that is 248 kN, while spread mooring has the smallest flexible riser tension, 55 kN. FSO with conventional buoy mooring configuration has the largest offset and spread mooring configuration has the smallest offset. The lazy wave type has smaller riser tension than the free hanging type, which is 4 – 58%.
Numerical Analysis on The Effect of Barge Motion to Jacket Lifting Process During Decommissioning Murdjito; Vebby Akbar Kurniawan; Raditya Danu Riyanto; Rudi Walujo Prastianto
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 1 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i1.5526

Abstract

Offshore structure decommissioning is mandatory when an offshore oil and gas platform reaches the end of its service life. There are no less than 450 fixed offshore steel structures in Southeast Asia, and by 2030, more than 200 offshore fields will be terminated and need to be decommissioned. From an operational aspect, the decommissioning process is simply an inverse of installation. However, due to the structures' age and the uncertainties of the structural performance, the simple operation can be an obfuscating process. This paper discusses one of the most crucial processes during decommissioning: lifting. The dynamic performance of a lifted jacket in several rigging variations is investigated. We use a standard stern crane HLV (Heavy Lift Vessel) to simulate the process, with several wave attack angles. Sea condition is according to DNVGL benign wave during marine operation, with random waves generated using the JONSWAP spectrum. Coupled dynamics of HLV and jacket motion are analyzed.
Digital Education on Small Island: Maratua Island, Indonesia Muhammad Badrus Zaman; Setyo Nugroho; Murdjito; Eko Budi Djatmiko; Wolfgang Busse
International Journal of Marine Engineering Innovation and Research Vol. 2 No. 2 (2018)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v2i2.6109

Abstract

Indonesia has thousand islands to be developed. The total number of islands is 17,508. The potential that can be developed on a small island are environment, energy, transportation, education, information, and so on. In this study, focus is development of Maratua island, located in the district of Berau in East Kalimantan Indonesia. The potential of the island is development of marine tourism. In this case, Sustainable Island Development initiatives (SIDI) implemented to address the above challenges through multidisciplinary research activities. This research is starting from the transport sector, health, education, energy and implementation of information technology. In this context, the development of digital education is very important. This research provides solutions to the educational development of practical and suitable for the Maratua Island. This research develops the role of information and communication technology for teaching and learning activities island communities, examines the role of technology as a supplement teaching and learning process. In addition, this research also aims to design a physical architecture and digital education system that can be implemented in small islands in Indonesia, designing a learning method to support the teaching and learning process, and educating stakeholders about the concept of digital education.
Information Connectivity as A Primary Instrument to Enhance Transport Connectivity Setyo Nugroho; Muhammad Badrus Zaman; Murdjito; Eko Budi Djatmiko; Wolfgang Busse
International Journal of Marine Engineering Innovation and Research Vol. 2 No. 2 (2018)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v2i2.6110

Abstract

Remotely located islands posses their own unique beauties and their common challenges. A case study on Maratua to enhance the quality of life is perceived to be achieved through the enhancement of the transport connectivity. The physical connectivity is manifested in the form of transport connectivity, entails the availability and the ease of obtaining a transport service to transfer goods and people. Deeper efforts to understand the mechanism of obtaining a transport service entails a primary actor directing both the ship and cargoes or passengers. This actor is the information connectivity. The paper elaborates promising efforts towards managing the information connectivity as a key for enhancing the transport service.
Co-Authors Eko Budi Djatmiko Kunthi U.D. Prabawani Muhammad Badrus Zaman Raditya Danu Riyanto Rudi Walujo Prastianto Setyo Nugroho Vebby Akbar Kurniawan Wolfgang Busse Wolfgang Busse