Offshore structures

Part 2 of ebook "The design life of structures" provides readers with contents including: how particular industries cope with design life; what can we learn from marine structures; offshore and marine structures; design life of welded structures; the maintenance of masonry; aseismic design and the lifetime concept; the European approach to design life;...

182p mothoiphong 28-06-2024 1 1   Download

Ebook "Dynamic analysis and design of offshore structures" attempts to provide readers with an overall idea of various types of offshore platform geometries. It covers the various environmental loads encountered by these structures, a detailed description of the fundamentals of structural dynamics in a class-room style, estimate of damping in offshore structures and their applications in the preliminary analysis and design. Basic concepts of structural dynamics are emphasized through simple illustrative examples and exercises.

305p cotieubac1004 15-03-2024 1 0   Download

Ebook "Environmental load factors and system strength evaluation of offshore jacket platforms" presents a study for the determination of environmental load factors for Jacket Platforms in Malaysia and a methodology to determine the life extension of aging platforms. The simplifie used for determining not only structural reliability but also safety factors. Its content is particularly interesting to design and maintenance engineers who are working in offshore or onshore industry.

347p nhanphanguyet 28-01-2024 5 2   Download

In ebook "Criminal justice and taxation" Peter Alldridge considers the development of the offences and the relationship between tax evasion offences and other criminal offences; the relevant rules of evidence; prosecution structures, decision-making processes, and alternatives to prosecution. Specific topics include offshore evasion and the relationship of tax evasion with other crimes and aspects of the criminal justice system.

257p loivantrinh 29-10-2023 8 4   Download

This article presents identification methods of the natural frequency of structures from single or multiple measurements in the frequency domain and its application to identify the natural frequencies of the offshore truss structure.

13p viengels 25-08-2023 6 3   Download

In this study, the H50 reservoir is taken as an example of how fault-bounded prospects are evaluated in Block 05- 1(a). For the case of Than Nong 1B, to meaningfully determine the potential of the structure, the fault geometric analysis is conducted to fully understand the 3D geometry of the structure.

8p vilucius 03-03-2023 4 3   Download

This article investigates the structural optimization of a 20-MW offshore wind generator to minimize the torque ripple and mass. The surface-mounted permanent magnet topology will be chosen for the generator.

6p visirius 11-01-2023 11 3   Download

In this study, we developed an offshore wind turbine model (cost: CapEx and OpEx, and mass) based on 26 studies and reports and real-world data of 57 offshore wind turbines. The model’s parameters (wind and geography profile) is established as in Vietnam condition. Two main structures of offshore-turbine foundations are considered in the model: monopile and jacket.

4p vistephenhawking 26-04-2022 8 2   Download

Lecture Drilling engineering: Deepwater equipment systems. By the end of this lecture you should be able to appreciate the various type of equipment systems used in deepwater operations; structural rigidity to withstand tensional loads and bending loads from risers and flowlines; locking profile and seal area for the BOP and tree hydraulic connectors;...

24p hanthienngao 15-04-2022 11 2   Download

This article presents the method to establish random wave surface in Vietnam’s sea areas based on any suitable wave spectrum. Hereby, hydro–dynamical characteristics of waves can be determined for further calculation of wave loads on offshore structures.

6p viwilliamleiding 04-12-2021 18 1   Download

This paper outlines some examples of nontraditional teaching techniques and highlights how the course could be best structured to overcome such negative views while at the same time responding to the changes in the industry. The design and content of the proposed course emphasizes the USER approach and is directed to English as second language learners. This is a case study in an Australian offshore campus and is the end result of the progressive improvement in the structure and delivery of the course.

12p cothumenhmong11 05-05-2021 32 4   Download

In fact, the sea wave is considered as a stochastic process. The random characteristics of the sea wave are described by a suitable spectrum. Offshore structures analyzing on random concept may be determined by creating a random wave surface from a defined wave spectrum for the sea area of consideration. This paper presents the method to establish random wave surface in Vietnam’s sea areas based on any suitable wave spectrum. Hereby, hydro -dynamical characteristics of waves can be determined for further calculation of wave loads on offshore structures.

5p quenchua5 17-05-2020 13 0   Download

Many offshore structures are subjected to overturning moments due to wind load, wave pressure, and ship impacts. Also most of retaining walls are subjected to horizontal forces and bending moments, these forces are due to earth pressure. For foundations in such structures, usually a combination of vertical and batter piles is used. Little information is available in the literature about estimating the capacity of piles under uplift. In cases where these supporting piles are not vertical, the behavior under axial pullout is not well established.

8p kethamoi1 17-11-2019 15 0   Download

In practice, the location of riverside water intakes is chosen based on land-property considerations rather than strict design criteria. For power plants intakes, abstraction efficiency is directly affected by the uniformity of flow distribution within the intake structure. The intake structure of South Helwan Power Plant (SHPP) is located downstream a Groin Like Formation (GLF) at the right bank of the Nile River, South Cairo, Egypt. This GLF disrupted the uniformity of flow approaching the intake.

9p trinhthamhodang1 14-11-2019 18 1   Download

Griffin’s Leaf-nosed bat (Hipposideros griffini) is one of the largest species of the family Hipposiderodae. In the field, it is recognisable from other hipposiderid species of Vietnam by body size, noseleaf structure, and echolocation frequency. Prior to this study, Hipposideros griffini was only known from two national parks (Cat Ba and Chu Mom Ray) in Vietnam. This paper provides new data recorded from Cat Tien national park, Southern Vietnam, indicating a more extensive distribution of Hipposideros griffini.

5p trinhthamhodang 24-10-2019 11 0   Download

To date, most of the oil and gas production in Cuu Long Basin (CLB) is contributed from structural traps, making them more and more depleted after years of exploitation. Exploration activities in CLB, therefore, are shifting towards other traps, including stratigraphic and/or combination ones. The results of exploration and appraisal activities in recent years have increasingly discovered more hydrocarbons in the Oligocene section; some of them were discovered in combination/stratigraphic traps.

11p vitheseus2711 29-10-2019 11 1   Download

This paper presents results of numerical simulation for a wave energy converter using linear permanent magnet generator. Using a linear permanent generator has the advantages of simple structure, minimizing the mechanical loose…

6p nguyentrinhminhbao 10-06-2019 8 1   Download

In the past few decades and up to now, the fossil energy has exerted tremendous impacts on human environments and gives rise to greenhouse effects while the wind power, especially in offshore region, is an attractive renewable energy resource. For offshore fixed wind turbine, stronger foundation like jacket structure has a good applicability for deeper water depth.

14p vinobita2711 31-05-2019 23 0   Download

This paper discribes the results of measurements and analysis of the parameters, characterising technical state of offshore platforms in Vietnam Sea. Based on decreasing in time material characteristics because of corrosion and local destruction assessment on residua life time of platforms is given and variants for its repair are recommended.

6p bautroibinhyen211 28-10-2018 14 0   Download

DET NORSKE VERITAS (DNV) is an autonomous and independent foundation with the objectives of safeguarding life, property and the environment, at sea and onshore. DNV undertakes classification, certification, and other verification and consultancy services relating to quality of ships, offshore units and installations, and onshore industries worldwide, and carries out research in relation to these functions. DNV Offshore Codes consist of a three level hierarchy of documents: — Offshore Service Specifications.

0p s6trongtrinh 24-02-2013 100 5   Download