Building nature-friendly Offshore wind farms - IROBuilding nature-friendly Offshore wind farms...

Title slide

Building nature-friendly Offshore wind farmsCEDA-NL / IRO Clubavond 12-03-2019

Text (M) & Image (XL)

Introduction

SUBMENU

• Foundation installation

• Tower installation

• Cable laying & burial

• Scour & cable protection

Introduction

Van Oord Offshore Wind

IMAGE 100%

Environmental effects we have to deal with…..

4

Underwater Noise Many users ……cumulative effects

Text compare (XXL)

• Installation noise

• Noise mitigation

• Mammal deterring system

Content

5

Challenges

• Induce biodiversity

• Shellfish reefs

• Increase species richness

Opportunities

Text (M) & Image (L)

• Proactively repels marine fauna from dredging and construction works with specialized (safe) acoustics

Mammal deterring system

6

Fauna Guard

Text (M) & Image (L)

• Behavioral response studies to proof effectivity:

• in captivity – selection of safe sounds

• In the field – deterrence effect

Mammal deterring system

7

FaunaGuardFauna Guard

Text compare (XXL)

Distance from MP: ≤ 50 m

HSD IHC IMI AdBm

Distance from MP: > 50 m

Bubble Curtains

Noise reduction technology

8

Near-field systems Far-field systems

Text (XXL)

• 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

9

Passive Noise Abatement

3 pillars

Demonstration AdBm noise reduction technology

10

Offshore Installation Vessel Lifting frame Resonator frames

Graph compare

Demonstration AdBm noise reduction technology

11

Deployment facility AdBm-system

Text (M) & Image (L)

Van Oord reef guard

12

Text (M) & Image (L)

North sea reefs

13

?

Image (XL) & Text (M)

Oysters – Outplacement Method

14Oosterscheldemuseum

WWF

?

Text (M) & Image (L)

• October 2018: Oyster cages & Reefballs placed

• July 2019: Placement of substrate cages

Luchterduinen Windfarm

15

Flat Oyster Pilot

Text (XXL)

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

16

Project Overview

1 2 3 54

Image (XL) & Text (L)

Borssele V: Innovation project

17

Oscar Bos

Text (M) & Image (L)

Borssele V: Innovation project

18Engelsma et al., 2014

Text (M) & Image (L)

• ‘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

19

Current experiments & research

CHAPTER / END

Thank you for your attention