Forecasting long term jack up vessel demand for offshore wind

Burgherr, Peter; Eckle, Petrissa; Hirschberg, Stefan

doi:10.1201/b15938-318

Cited by 5 publications

(2 citation statements)

References 6 publications

(8 reference statements)

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“…[16] in dependence of data quality and amount. They were also considered get-at-able results of other authors [6,[17][18][19][20][21][22].…”

Section: Risk Sourcesmentioning

confidence: 99%

Tool for Risk-Based Operation of Socio-Cyber-Physical Systems

Procházková¹

2021

BEN

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The human’s lives are strongly dependent on operation of socio-cyber-physical systems that create vitally infrastructure of human society system. These systems are complex systems, which have form “systems of systems”. Due to complexity, these systems are threatening not only by risks influencing their elements, but also with risks connected with uncomfortable links and flows among elements, which occur at critical conditions due to occurrence of unexpected interdependences. The aim of risk management of socio-cyber-physical systems at operation is the integral safety which ensures their co-existence with their vicinity throughout their life cycles. On the basis of present knowledge and experience, part of risks that threaten socio-cyber-physical systems is coped by preventive measures during their designing and manufacturing. Due to dynamic changes of the world, the conditions of socio-cyber-physical systems at operations change. If changes exceed the socio-cyber-physical systems´ safety limits which were inserted into their designs, the accidents or socio-physical -cyber-physical systems´ failures occur. The presented risk management plan is tool which ensures the correct response to such unaccepted situations and fast ensuring the safety.

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“…[16] in dependence of data quality and amount. They were also considered get-at-able results of other authors [6,[17][18][19][20][21][22].…”

Section: Risk Sourcesmentioning

confidence: 99%

Tool for Risk-Based Operation of Socio-Cyber-Physical Systems

Procházková¹

2021

BEN

View full text Add to dashboard Cite

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“…At present, there is growing concern regarding the manufacturability, transportability and cost of materials of these growing assets [1]. The uptake of offshore wind has also placed additional demand on vessels, leading to an increase in charter costs [2]. One proposed solution for overcoming these challenges is the multi-rotor system (MRS) offshore wind turbine design [3] This concept aims to utilise the swept area of a single-rotor conventional turbine using multiple smaller rotors within the same structure.…”

Section: Introductionmentioning

confidence: 99%

Multi Rotor Wind Turbine Systems: An Exploration of Failure Rates and Failure Classification

McMorland,

Khisraw,

Dalhoff

et al. 2023

J. Phys.: Conf. Ser.

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The Multi-Rotor System (MRS) is a proposed solution to the increasing costs associated with the manufacture and maintenance of large single-rotor wind turbines. The MRS consists of many small rotors that can capture the same amount of energy as a large turbine but with the added benefits of standardization, reduced system loads, and improved reliability due to the redundancy of components and smaller size. However, modelling the operation and maintenance (O&M) of the MRS presents several challenges, including a lack of available failure data. This work aims to determine, what failure rate reduction, can MRS be competitive with equivalent single-rotor wind farms, using existing single-rotor turbine data as a baseline. The key failure components are identified through the use of a cost-based comparison parameter. Statistical and theoretical approaches are then used to analyse the impact of fatigue on failure rates for downscaled turbines, to determine if the required reduction in failure rate is feasible. Using a case study, the sensitivity of availability, operational expenditure, and lost revenue to failure rates is also determined.

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Environmental Sustainability and Efficiency of Offshore Platform Decommissioning: A Review

Zawawi,

Danyaro,

Liew

et al. 2023

Sustainability

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Malaysia has inherited many aged offshore platforms that have reached their decommissioning deadline. Many platforms need to be detached through subsea processes. Although there are good techniques for this, they are usually costly and necessitate a great deal of post-cut checking to ensure complete detachment. Explosive cutting techniques, on the other hand, are cost-effective and reliable for offshore decommissioning as they ensure complete cutting with little uncertainty. Until 2019, statistics showed that almost 35% of offshore platform decommissioning processes involved the use of explosive materials and other mechanical severance options. The method was reliable and cheap, but it had a large environmental impact. During blasting procedures utilizing pressure waves, many sea animal species are threatened, such as fishes, turtles, and dolphins. Depletion of already scarce fish stocks through the unsustainable use of explosive removal should be prevented by reducing the environmental impact of underwater explosives. Moreover, due to safety hazards, vessel and aircraft movement around the explosion zone is prohibited. Therefore, this paper provides a comprehensive review of using a highly vacuum-sealed pile for the explosion to control and reduce shock wave propagation. This effort appreciates the benefits of the explosive cutting technique and reduces its environmental side effects. Our findings indicate an accurate and clean-cut method serving the efficiency of offshore platform decommissioning as well as environmental sustainability. Finally, recommendations for future perspectives have been provided based on the decommissioning of offshore platforms, such as topside removal, planning, time scale, and optimization of available space.

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Forecasting long term jack up vessel demand for offshore wind

Cited by 5 publications

References 6 publications

Tool for Risk-Based Operation of Socio-Cyber-Physical Systems

Tool for Risk-Based Operation of Socio-Cyber-Physical Systems

Multi Rotor Wind Turbine Systems: An Exploration of Failure Rates and Failure Classification

Environmental Sustainability and Efficiency of Offshore Platform Decommissioning: A Review

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