Offshore concrete structures

Fernández, Rodrigo Pérez; Pardo, Miguel Lamas

doi:10.1016/j.oceaneng.2012.11.007

Cited by 49 publications

(9 citation statements)

References 1 publication

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“…The intense urbanization in coastal areas is responsible for the presence of these structures in this region. Besides, studies show that many times the service life is compromised due to high aggressiveness in this environment (Castro-Borges et al, 2013;Fernández and Pardo, 2013;Ghods et al, 2005;Hirdaris et al, 2014). Finally, there is a growing need for the use of offshore concrete structures in developing countries, such as ports, oil platforms and airports.…”

Section: Introductionmentioning

confidence: 99%

Chloride penetration into concrete in an offshore platform-analysis of exposure conditions

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Chloride penetration into concrete in an offshore platform-analysis of exposure conditions

et al. 2015

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“…Concrete structures have been used for many decades in the offshore oil and gas industry and have exhibited high durability [18]. One of the main degradation mechanisms for concrete structures in marine environment, that needs to be taken into account in the design, is the corrosion of the reinforcement steel due to penetration of chloride from sea water in the concrete.…”

Section: Design and Construction Of Offshore Concrete Structuresmentioning

confidence: 99%

“…The vast majority of support structures for offshore wind turbines are made of steel, and most of those are monopiles. However, recent studies highlight the potential benefits of using concrete for offshore structures in general [18] and for offshore wind turbines in particular [19][20][21][22], since concrete structures have lower production costs, and better durability and fatigue resistance. The cost of concrete structures is also more predictable as steel material prices are very volatile, with price fluctuations that are several times larger those of cement.…”

Section: Introductionmentioning

confidence: 99%

Concrete Support Structures for Offshore Wind Turbines: Current Status, Challenges, and Future Trends

2021

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Today’s offshore wind turbine support structures market is largely dominated by steel structures, since steel monopiles account for the vast majority of installations in the last decade and new types of multi-leg steel structures have been developed in recent years. However, as wind turbines become bigger, and potential sites for offshore wind farms are located in ever deeper waters and ever further from the shore, the conditions for the design, transport, and installation of support structures are changing. In light of these facts, this paper identifies and categorizes the challenges and future trends related to the use of concrete for support structures of future offshore wind projects. To do so, recent advances and technologies still under development for both bottom-fixed and floating concrete support structures have been reviewed. It was found that these new developments meet the challenges associated with the use of concrete support structures, as they will allow the production costs to be lowered and transport and installation to be facilitated. New technologies for concrete support structures used at medium and great water depths are also being developed and are expected to become more common in future offshore wind installations. Therefore, the new developments identified in this paper show the likelihood of an increase in the use of concrete support structures in future offshore wind farms. These developments also indicate that the complexity of future support structures will increase due to the development of hybrid structures combining steel and concrete. These evolutions call for new knowledge and technical know-how in order to allow reliable structures to be built and risk-free offshore installation to be executed.

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“… modifikasi desain selama konstruksi amat mahal (sulit diprediksi)  usiastruktur berkisar 25 -50 tahun. Bangunan lepas pantai umumnya terbuat dari beton bertulang karena mempunyai unjukkerja sangat baik [26], dengan sifat-sifat sebagai berikut:  daya tahanan (durability) sangat tinggi  minim pemeliharaan  pergerakan lebih baik ketika struktur diambangkan  cocok untuk lingkungan yang keras, seperti daerah gempa  mampu menahan beban berat  tahan api  tahan korosi  tidak membutuhkan jangkar karena dimensi luas dan berat sangat besar sehingga cocok untuk landasan lembek dan tidak kuat.…”

Section: Teoriunclassified

Kajian Pra Kelayakan PLTN SMART Lepas Pantai Jenis Struktur Berbasis Gravitasi Untuk Indonesia

Lumbanraja¹,

Dewi²

2017

Jurnal Pengembangan Energi Nuklir

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KAJIAN PRA KELAYAKAN PLTN SMART LEPAS PANTAI JENIS STRUKTUR BERBASISGRAVITASI UNTUK INDONESIA. PLTN SMART lepas pantai jenis struktur berbasis gravitasi (gravity based structure, GBS) merupakan reaktor air tekan, berdaya kecil (100 MWe), dan tapaknya berada di lepas pantai. Teknologi ini dikembangkan berdasarkan teknologi PLTN SMART yang telah ada dan teknologi pengeboran lepas pantai dengan jenis struktur berbasis gravitasi. Hal ini sebagai respons pasca kecelakaan Fukushima, Jepang (2011), untuk meningkatkan sistem keselamatan, mengatasi keterbatasan lahan, dan meminimalisir penolakan masyarakat pada kasus PLTN di tapak daratan. Tujuan dari makalah ini adalah untuk mengkaji prakelayakan implementasi PLTN GBS di Indonesia baik dari segi kelayakan teknologi maupun regulasi. Metode yang digunakan adalah kajian pustaka dan selanjutnya dilakukan analisis deskriptif. Hasil kajian menunjukkan bahwa PLTN SMART lepas pantai patut dipertimbangkan karena menawarkan peningkatan aspek keselamatan, ketersediaan tapak lepas pantai, dan penerimaan masyarakat yang lebih baik. Sejauh ini PLTN SMART lepas pantai belum dapat diimplementasikan di Indonesia karena dibatasi oleh Peraturan Pemerintah Nomor 2 Tahun 2014 tentang Perijinan Instalasi Nuklir Dan Pemanfaatan Bahan Nuklir, yang menyatakan tapak adalah lokasi di daratan dan PLTN yang dapat dibangun di Indonesia harus sudah teruji. ABSTRACT PRE FEASIBILITY ASSESMENT OF SMART OFFSHORE NPP (ONPP) OF GRAVITY BASED-STRUCTURE TYPE FOR INDONESIA.The SMART ONPP GBS-type is a small power (100 MWe) pressurized water reactor, and located at offshore site. This technology was developed based on existing SMART nuclear technology & offshore drilling technology with a gravity-based type of structure. This is a response to the post-Fukushima accident, Japan (2011), to improve the safety system, overcome the land limitations, and minimize the public resistance to NPP cases in the inland. The purpose of this paper is to assess the pre-feasibility of the implementation of GBS NPP in Indonesia both in terms of technological feasibility and regulation. The method used is literature review and continued with descriptive analysis. The result shows that SMART ONPP are worth considering because they offer improved aspects of safety, offshore tread availability, and better public acceptance. So far, this NPP can not be implemented in Indonesia because it is hampered by Government Regulation No. 2 year 2014 regarding Licensing of Nuclear Installation Safety and Security which stipulates that site is an inland location and NPP built in Indonesia should be proven.

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Offshore concrete structures

Cited by 49 publications

References 1 publication

Chloride penetration into concrete in an offshore platform-analysis of exposure conditions

Chloride penetration into concrete in an offshore platform-analysis of exposure conditions

Concrete Support Structures for Offshore Wind Turbines: Current Status, Challenges, and Future Trends

Kajian Pra Kelayakan PLTN SMART Lepas Pantai Jenis Struktur Berbasis Gravitasi Untuk Indonesia

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