Building nature-friendly Offshore wind farms - IROBuilding nature-friendly Offshore wind farms...
Transcript of Building nature-friendly Offshore wind farms - IROBuilding nature-friendly Offshore wind farms...
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Title slide
Building nature-friendly Offshore wind farmsCEDA-NL / IRO Clubavond 12-03-2019
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Introduction
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SUBMENU
• Foundation installation
• Tower installation
• Cable laying & burial
• Scour & cable protection
Introduction
Van Oord Offshore Wind
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Environmental effects we have to deal with…..
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Underwater Noise Many users ……cumulative effects
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• Installation noise
• Noise mitigation
• Mammal deterring system
Content
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Challenges
• Induce biodiversity
• Shellfish reefs
• Increase species richness
Opportunities
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• Proactively repels marine fauna from dredging and construction works with specialized (safe) acoustics
Mammal deterring system
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Fauna Guard
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• Behavioral response studies to proof effectivity:
• in captivity – selection of safe sounds
• In the field – deterrence effect
Mammal deterring system
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FaunaGuardFauna Guard
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Distance from MP: ≤ 50 m
HSD IHC IMI AdBm
Distance from MP: > 50 m
Bubble Curtains
Noise reduction technology
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Near-field systems Far-field systems
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• First full scale test of the AdbMsystem
• Helmholtz resonators, tuned to 100 Hz
• Open system, 1 meter between the resonator panels
• Passive system, no continuous power supply necessary
• Potential reduction up to 35 dB
Demonstration AdBm noise reduction technology
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Passive Noise Abatement
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3 pillars
Demonstration AdBm noise reduction technology
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Offshore Installation Vessel Lifting frame Resonator frames
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Demonstration AdBm noise reduction technology
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Deployment facility AdBm-system
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Van Oord reef guard
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North sea reefs
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?
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Oysters – Outplacement Method
14Oosterscheldemuseum
WWF
?
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• October 2018: Oyster cages & Reefballs placed
• July 2019: Placement of substrate cages
Luchterduinen Windfarm
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Flat Oyster Pilot
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Innovation Site in Borssele OWF
2 MHI-Vestas 9.5 MW – V164 WTGs
Planned Innovations:
1. Slip Joint
2. ICCP Optimisation
3. TSA Coating
4. Cable routing
5. Eco-friendly Scour
Borssele V: Innovation project
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Project Overview
1 2 3 54
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Borssele V: Innovation project
18Engelsma et al., 2014
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• ‘Effects of burial on the Ostrea Edulis’
• Orientation of importance
• Dislodgement of oysters
• Experiments in flume tank
• Mobilisation of Oyster Guard
Borssele V: Innovation project
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Current experiments & research
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CHAPTER / END
Thank you for your attention