ORCID Profile
0000-0001-8963-2810
Current Organisations
University of Tasmania Launceston Campus
,
University of Tasmania
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Publisher: IOP Publishing
Date: 2021
DOI: 10.1088/1757-899X/1052/1/012061
Abstract: Moonpool commonly installed in production barge, drilling vessel, pipe laying vessel, survey vessel and offshore ing vessel. Moonpool is an opening vertical wall through the deck from top to bottom of the vessel. The main purpose of using moonpool is to perform lifting/lowering of subsea equipment. It considers as the most effective subsea handling method, but it has disadvantages with oscillation of water column inside moon pool. The purpose of this study is to understand the correlation between response water column inside the moonpool with environmental load and the motion of the floating structure during operational time or transit condition. During transit condition, the forward speed of the barge is zero, the excitation force only caused by incoming waves and barge heave motion. The study started by defining the barge vertical movement and all the forces acting in the body of moonpool to obtain simplified harmonic equation for water column motion and plotting the result using MATLAB software. The litude of heave barge and water column piston mode is strongly influenced by environmental conditions, in this case the significant wave height and also the dimension of the moonpool area since it is giving additional added mass into the motion. The large litude of the water column likely to occur if critical frequency is in the range of wave excitation. Thus, to prevent any over flowing condition during lowering/lifting operation via moonpool, the limiting sea-state condition should be identified for the designated location.
Publisher: Springer Science and Business Media LLC
Date: 22-11-2022
DOI: 10.1186/S41072-022-00125-6
Abstract: The recent renewable energy infrastructure development trend and modular construction concept surge academic interest in the project logistics sector. The project logistics is the transportation processes for oversized cargo, critical and high value, that belong to infrastructures projects that require specialised stowage, lifting and transporting loaded and discharged at different ports. This study aims to introduce project logistics to the public sector. The author uses the descriptive review to elaborate on the niche problem of project cargo transportation. The flow of project cargo operation from the fabrication yard to the final installation site is discussed in this paper. Planning of project cargo logistics requires an integrated planning approach that considers the following aspects total delivery cost management, end-to-end visibility, transport routing management, variability management, integrated international and domestic workflow, and technical safety consideration. The decision-making for fleet selection should be based on the optimum scenario evaluating the damage’s total logistics cost, delivery time, risks and consequences. This study can be a guide to accommodate multidiscipline studies that consider commercial, technical, and safety aspects of project logistics.
Publisher: IOP Publishing
Date: 09-2022
DOI: 10.1088/1755-1315/1081/1/012012
Abstract: The global initiative for decarbonisation keeps growing at a different rate for each country. The global decarbonisation rate, which presents the carbon intensity reduction or energy-related CO2 emissions per dollar GDP, reached 2.5% in 2020. Indonesia recorded contributing as the second-highest rate of emissions reduction in the global decarbonisation rate during 2019-2020 with a total of 10.6% less carbon intensity. Solid infrastructure asset management shall significantly improve to support the further decarbonisation movement. As one of the cleanest carbon energy, LNG could be the fastest solution to keeping the initiative. Unfortunately, it has a drawback: methane produces higher Green House gases (GHG) than CO2. Furthermore, LNG acts as a transition fuel while the global industry prepares for renewable energy resources. The authors propose Adaptive Port Planning (APP) and Engineering Asset Management (EAM) framework for managing the existing LNG infrastructure terminal assets in this study. The EAM combines a multidisciplinary approach to provide a framework for effectively managing all engineered physical assets within the organisation. In contrast, the APP will give the idea to count the uncertainty in infrastructure demand, allowing flexibility in planning. The author overviews the conversion or transition pathway for existing terminal gas infrastructure to support future renewable energy resources such as hydrogen and ammonia. The Adaptive EAM will guide the sustainable business mindset and provide cost-effective decarbonising solutions.
Publisher: Informa UK Limited
Date: 03-07-2022
Publisher: IOP Publishing
Date: 2022
DOI: 10.1088/1755-1315/972/1/012075
Abstract: Global trade for regasification LNG has reached 850.1 MTPA by February 2021 because of the enforcement of clean energy applications. The alternative of renewable energy such as hydropower, solar, and wind has developed globally, but they have not been implemented effectively in Indonesia. LNG became an alternative to clean energy because of its low carbon emissions. An estimated 26% of the 35,000 MW of Indonesia’s electricity supply project comes from natural gas-powered power plants. The scope of this study is to investigate the implementation of adaptive planning for LNG regasification facilities. The authors interview the LNG experts in Indonesia to assess uncertainties, vulnerabilities, and opportunities in its business process to identify the enabling factors for implementing the adaptive method in LNG terminal master planning. This research aims to provide an adaptive strategy for LNG Regasification Terminal to satisfy resilient and sustainable infrastructure concepts. The authors propose the Real Options Analysis using a binomial decision tree to evaluate the decision-making under uncertainty for the infrastructure LNG regasification terminal facilities. The study case for category medium to large scale with 4 MTPA, FSRU concept selected as the suitable configuration, while for the smaller scale facilities with 0.5 MTPA, the FSU with regasification barge selected as the most suitable configuration.
Publisher: The Institute for Research and Community Services (LPPM) ITB
Date: 22-12-2022
Abstract: Abstract. The infrastructure industry is a crucial sector that significantly impacts economic growth. In the second quarter of 2020, infrastructure was the fourth most significant contributor to Indonesia’s economy, contributing 10.56% of the total GDP. Recent research shows modular construction outweighs the conventional method in terms of cost, schedule, and quality. This paper investigates the opportunity to apply modular construction to develop Indonesia’s New Capital City Project. The authors conducted a SWOT analysis and risk analysis to ensure the benefit of its application. The barrier to modularity application is in the transport cost-efficiency. The study shows that the modularity option provides more advantages in Indonesia’s New Capital City development than the traditional cost and time reduction, longevity improvement, standardisation, product quality, minimising construction waste, and meeting high safety requirements. In large-scale demand, modularity is more profitable. The detailing design use BIM and RFID. The logistics efficiency supported by integrating transport and logistics processes as part of the project management system will outperform the conventional construction method. Keywords: Modular construction, new capital city project, sustainable infrastructure, SDG Abstrak. Industri infrastruktur merupakan salah satu sektor penting yang berd ak signifikan terhadap pertumbuhan ekonomi. Pada triwulan kedua tahun 2020, infrastruktur menjadi penyumbang terbesar keempat bagi perekonomian Indonesia, dengan kontribusi 10,56% dari total PDB. Penelitian terbaru menunjukkan bahwa konstruksi modular memiliki keunggulan dari segi metode biaya, jadwal, maupun kualitas dibandingkan metode tradisional. Makalah ini membahas mengenai peluang untuk menerapkan konstruksi modular untuk pengembangan Proyek Ibu Kota Baru Indonesia. Penulis melakukan analisis SWOT dan analisis risiko untuk mengetahui manfaat dari penerapan tersebut. Kendala dari pengaplikasian system modular terutama dalam efisiensi biaya transportasi. Studi tersebut menunjukkan bahwa opsi konstruksi modular memberikan lebih banyak manfaat dalam pengembangan Ibu Kota Baru Indonesia daripada pengurangan biaya dan waktu tradisional, peningkatan umur panjang, standarisasi, kualitas produk, meminimalkan limbah konstruksi, dan memenuhi kriteria keselamatan tenaga kerja yang tinggi. Dalam permintaan skala besar, konstruksi modular akan lebih menguntungkan. Pengembangan DED untuk konstruksi modular menggunakan BIM dan RFID. Peningkatan efisiensi logistik dapat dilakukan dengan integrasi system transportasi dan logistik sebagai bagian dari manajemen proyek sehingga akan mengungguli metode konstruksi konvensional. Kata Kunci: Konstruksi modular, ibu kota negara, infrastruktur berkesinambungan
Publisher: Penerbit UTM Press
Date: 15-07-2014
DOI: 10.11113/JT.V69.3284
Abstract: The LNG jetty is facilities (forming part of the terminal) for the berthing and unloading of LNGC, including all shore-side discharging arms and docking facilities.The criteria design to build new LNG based on some aspect such as the result of bathymetric survey, the tanker or other vessel, port facilities, mooring layout, and also catastrophic accident such as LNG vapor dispersion. One of the critical issue on the LNG Jetty design is the configuration of mooring vessel, that should be analyzed before vessel need to berth on jetty. Mooring are provided to prevent vessel from drifting away from a berth. It is assumed that the wave motions are unaffected by the stiffness of the mooring lines and fenders.
No related grants have been discovered for Oktaviani Turbaningsih.