Risk of collision between service vessels and offshore wind turbines

Dai, Lijuan; Ehlers, Sören; Rausand, Marvin; Utne, Ingrid Bouwer

doi:10.1016/j.ress.2012.07.008

Cited by 89 publications

(42 citation statements)

References 9 publications

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“…These larger vessels ( $ 50 m) have better operational capability than conventional CTVs and are generally equipped with dynamic positioning systems. Additionally, motioncompensating gangways are typically installed on OAVs in order to transfer technicians on the wind turbine in rough weather, in which CTVs cannot operate (Dai et al, 2013;O'Connor et al, 2013). Cranes on these vessels provide ability to transfer medium weight components from vessels' deck directly to offshore wind turbine platforms.…”

Section: Transportation Systemsmentioning

confidence: 99%

Advanced logistics planning for offshore wind farm operation and maintenance activities

et al. 2015

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Offshore wind turbine technology is moving forward as a cleaner alternative to the fossil fuelled power production. However, there are a number of challenges in offshore; wind turbines are subject to different loads that are not often experienced onshore and more importantly challenging wind and wave conditions limit the operability of the vessels needed to access offshore wind farms. As the power generation capacity improves constantly, advanced planning of Operation and Maintenance (O&M)activities, which supports the developers in achieving reduced downtime, optimised availability and maximised revenue, has gained vital importance. In this context, the focus of this research is the investigation of the most cost-effective approach to allocate O&M resources which may include helicopter, crew transfer vessels, offshore access vessels, and jack-up vessels. This target is achieved through the implementation of a time domain Monte-Carlo simulation approach which includes analysis of environmental conditions (wind speed, wave height, and wave period), operational analysis of transportation systems, investigation of failures (type and frequency), and simulation of repairs. The developed methodology highlights how the O&M fleets can be operated in a cost-effective manner in order to support associated day-to-day O&M activities and sustain continuous power production

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Section: Transportation Systemsmentioning

confidence: 99%

Advanced logistics planning for offshore wind farm operation and maintenance activities

et al. 2015

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“…In the worst case scenarios, maritime accidents may not only damage the vessels, but also the turbines-leading to further downtime and increased repair costs, thereby reducing the reliability of offshore wind even further. According to the findings of Dai et al (2013), a fairly small support vessel with 230 tones displacement, colliding head-on with the landing structure on a turbine tower at a speed of just 0.48 m/s, would be enough to induce local yield in the structure; colliding a speed of 0.84 m/s with the landing structure would induce global yield. Conversely, the same vessel colliding head-on directly with the tower would cause local yield and global yield at speeds of 0.34 m/s and 0.55 m/s respectively.…”

Section: The Need For Maritime Risk Assessment and Managementmentioning

confidence: 99%

“…As such, causation probabilities are often calculated through sophisticated risk assessment methods such as Fault Trees, Event Tress (Fowler and Sørgård 2000;Haugen 1991) and Bayesian Networks (Akhtar and Utne 2013;Dai et al 2013;Hänninen et al 2013;Hänninen and Kujala 2012;Szwed et al 2006;Friis-Hansen 2000;Friis-Hansen and Simonsen 2002). Using risk assessment methods can allow various factors-such as human and organizational errors, configuration of the navigational area, navigational aids and markings, bathymetry, and coastal state features such as VTS-to be taken into consideration (Friis-Hansen 2008).…”

Section: Causation Probability Of Accidentsmentioning

confidence: 99%

“…In particular, Biehl and Lehmann (2006) have done significant work on describing numerical methods for ship-turbine collision analysis. Similarly, Dai et al (2013) describe a procedure to calculate the damage to a turbine, using FEA, in a scenario where a support vessel collides with a wind turbine. Most recently, Bela et al (2015) have used FEA to assess the crashworthiness of mono-piles.…”

Section: Consequences Of Contactmentioning

confidence: 99%

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A Theoretical Risk Management Framework for Vessels Operating Near Offshore Wind Farms

Mehdi

Schröder-Hinrichs

2016

Mare-Wint

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The design of an offshore wind farm (OWF) can have a major impact on the safety of maritime operations in the vicinity. Factors such as the number of turbines, turbine spacing, and tower design can all have an effect the probability and consequences of various maritime accidents. The current chapter describes the potential effects of offshore wind farms on maritime traffic-particularly in a safety, reliability and risk context. The chapter also reviews existing methods, models and frameworks that can be used to assess the risk to maritime operations. Lastly, the authors propose an improved theoretical risk management framework that addresses some present concerns. The Need for Maritime Risk Management Around Offshore Wind FarmsIn this first section, the status of the OWF industry and the need for maritime risk management around wind farms is described. Trends in the OWF IndustryOver the past few decades, there has been a sharp increase in the use of renewable energy-driven not only by a more mindful society, but also by strong policy instruments and decisions. One of the most popular renewable energy schemes is wind energy. As the demand for energy generation grows, an increasing number of wind turbines are being installed offshore. OWFs offer several advantages over their onshore equivalents. There is better wind resource, and the wind speeds are more consistent out at sea. Potentially, wind turbines can also be scaled up to much

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“…In contrast to bridge resources management (BRM), engine room resource management has to a limited extent been exploited, neither in practice nor in the investigation of the accidents (Hetherington et al 2006). Violation of procedure and drifting operational practice in the merchant fleet has been reported in other studies as well (Dai et al 2013;Oltedal 2012;Antonsen 2009b) and may be expected if procedures, instructions, or checklists are considered inefficient or meaningless by the crew. In this study, we also found that a high number of causal factors were coded to section 7 of the ISM code representing lack of or poor instructions, procedures, and/or checklists.…”

Section: Coding To Hfacs and Cross-tabulationmentioning

confidence: 99%

Maritime safety and the ISM code: a study of investigated casualties and incidents

Batalden

Sydnes

2013

WMU J Marit Affairs

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In 1993, the International Maritime Organization adopted the International Safety Management (ISM) Code which requires all shipping companies operating certain types of vessels to establish safety management systems. Nevertheless, two decades later, maritime safety remains a concern. This article studies 94 maritime cases investigated by the Maritime Accident Investigation Branch in the UK. By providing an analysis of reported casualties and incidents, it highlights current challenges in maritime safety. For each casualty and incident, the study reviews the underlying causal factors. These causal factors are then coded according to the functional sections of the ISM Code, covering various aspects of safety management. To investigate human and organizational factors involved in the casualties and incidents, the human factor analysis and classification system (HFACS) is applied to code the same data. Finally, the relative seriousness of casualties and incidents is considered to discuss the findings from ISM Code and HFACS reviews. The study found that the main challenges pertain to the development of plans for shipboard operations, local shipboard management, and the ability of the company to verify when such practices deviate from best practices or required standards.Keywords ISM Code . Maritime safety . Safety management and human factors IntroductionThe maritime transport industry (shipping) accounts for more than 90 % of global trade (IMO 2012) and has shown a doubling in transport capacity since 1980 (UNCTAD 2011). A 30 % increase in the loss ratio of vessels has been reported between 2006 (IMO 2012. WMU J Marit Affairs (2014) 13:3-25

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Risk of collision between service vessels and offshore wind turbines

Cited by 89 publications

References 9 publications

Advanced logistics planning for offshore wind farm operation and maintenance activities

Advanced logistics planning for offshore wind farm operation and maintenance activities

A Theoretical Risk Management Framework for Vessels Operating Near Offshore Wind Farms

Maritime safety and the ISM code: a study of investigated casualties and incidents

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