Issues in offshore platform research - Part 1: Semi-submersibles

Sharma, Ranjan; Kim, Tae‐Wan; Sha, Om Prakash; Misra, S. C.

doi:10.2478/ijnaoe-2013-0032

Cited by 22 publications

(5 citation statements)

References 1 publication

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“…This study contained a free vibration analysis, earthquake analysis and earthquake reaction continuum research. The response spectrum study will be carried out for the earthquake load using the response spectrum curves of EuroCode8 2004 via SAP2000 computation tools [13,14]. There are two types of analysis, Aceh and El-Centro, which are time history analysis.…”

Section: Earthquake Loadsmentioning

confidence: 99%

Seismic Effect of the Offshore Structure Under Different Earthquake Loadings

Kee,

Cheok,

Kamarudin

et al. 2023

IJIE

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Peninsular Malaysia is most affected by the distant Sumatra subduction zone earthquake. Meanwhile, Eastern Malaysia was subjected to major Philippine and Indonesian earthquake. Most of the offshore platform is at Terengganu, Sabah, and Sarawak. More than 65% of the offshore platform structure exceed the range of design between 20-30 years. This research aims to determine the vulnerability and risk analysis for the existing 3-legged offshore platform under earthquake load, study the behaviors of an offshore platform under major or minor earth-quake loading, and study the dynamic characteristic of an offshore platform. SAP 2000 is use to analyses and modelling the 3-legged offshore platform. In SAP 2000, the response spectrum, time history, and free vibration will be performed. The mixed load of the platform consists of dead load, imposed load, environment loads, and earthquake load. The position of the offshore platform has referred to American Petroleum Institute (API) standard. The major earthquake under off-shore platform is El-Centro and the minor is Aceh compared to time history. Based on this study, Malaysia can withstand this low seismic activity, overall joint acceleration, velocity and displacement.

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Section: Earthquake Loadsmentioning

confidence: 99%

Seismic Effect of the Offshore Structure Under Different Earthquake Loadings

Kee,

Cheok,

Kamarudin

et al. 2023

IJIE

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“…beginning and by means of the use of whom? Therefore, offshore systems want to be established: massive constructions (floating or fixed) used to house the humans and tools desired for drilling ocean ground wells; natural oil and gas extraction; working produced fluids; and shipping pipelines to shore (Sharma, 2010) [12] . However, many humans do no longer know that the pipeline is the solely suggested for transporting beverages like water, oil, and gasoline from one location to another, which is critical for power transmission and additionally for keeping the country's financial system (Efzan, 2015) [3] Consider that pipelines play an imperative function in transporting crude oil (Hopkins, 2007;Seaman., 2010) [24,10] .…”

Section: Introductionmentioning

confidence: 99%

Novel criteria and methods for sustainable marine ecologic management

2023

Int. J. Geogr. Geol. Environ.

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This study develops an integrated methodology to evaluate and prioritize suitable sites for many human activities associated with sustainable marine development, such as wind farms, fish farms, and marine nature reserves. The methodological framework includes identifying proposed locations for ship trajectory, laying oil pipelines, oil platforms, and all those affecting these locations, including river plumes and sub-marine springs, using geographic information systems (GIS), remote sensing, and multi-natural-criteria methods. Therefore, maps were produced and then re-classified into three categories: low, moderate, and extreme ability training. The results provide a decision-making process regarding offshore wind farming, fish farming, and the establishment of marine reserves. The outputs of this work contribute to ensuring the sustainable spatial development of the marine ecosystem through renewable energy resources and nutrition solutions.

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“…The spar, the tension leg platform (TLP), and the semi-submersible systems are the most suitable solutions, as these were designed for stationary use. Moreover, methods for analysing and designing the aforementioned types of conventional floating structure were extensively developed over previous decades [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

On the Development of an Offshore Version of the CECO Wave Energy Converter

et al. 2020

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Offshore locations present significant amounts of wave energy and free sea space, which could facilitate the deployment of larger numbers of wave energy converters (WECs) in comparison with nearshore regions. The present study aims to find a suitable design for an offshore floating version of CECO, a sloped motion WEC. For this purpose, a new design methodology is proposed in this paper for identifying and assessing possible floating configurations of CECO, which consists of four distinct set-ups obtained by varying the type of main supporting structure and the mooring system. Two options are based on spar designs and the other two on tension leg platform (TLP) designs. Based on outcomes of time-domain numerical calculations, the aforementioned configurations were assessed in terms of annual wave energy conversion and magnitude of mooring loads. Results indicate that a TLP configuration with an innovative mooring solution could increase the annual energy production by 40% with respect to the fixed version of CECO. Besides, the mooring system is found to be a key component, influencing the overall system performance.

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Issues in offshore platform research - Part 1: Semi-submersibles

Cited by 22 publications

References 1 publication

Seismic Effect of the Offshore Structure Under Different Earthquake Loadings

Seismic Effect of the Offshore Structure Under Different Earthquake Loadings

Novel criteria and methods for sustainable marine ecologic management

On the Development of an Offshore Version of the CECO Wave Energy Converter

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