Monopile installation on Amalia Offshore Wind Farm

MONOPILE INSTALLATION ON AMALIA OFFSHORE WIND FARM

In 2018, the CAPE VLT-320 Tandem was used to upend and install a 4 meter diameter monopile with a slip joint and a length of 56.6 meter, in a water depth of 24 meter at the Amalia Offshore Wind Farm off the Dutch coast.

The pile was installed three times and extracted twice as part of a testing campaign during the Slip Joint Offshore Research test by DOT with the CAPE VLT whereby the pile was installed free hanging from the crane (no guiding of pile support frame used) using the Dynamic Positioning (DP) system of the installation vessel.

These tests provided a lot of knowledge about the versatility and usability of the vibro lifting technology, including correcting the verticality using the Dynamic Positioning system.

The pile was driven to final penetration and left behind for the next stage in the project.

Application details

Application
Monopile installation and extraction
Pile type
Monopiles
Water depth
22-24m
Penetration
19m

PILE DETAILS

Pile type
Monopiles
Pile model
Slip joint
Pile length
56.6m
Pile weight
300t
Pile wall thickness
40-60mm
Pile diameter
3.26-4m
No. of piles
1

PROJECT DETAILS

Period
2018
Sea
North Sea
Country
The Netherlands
Location
Amalia Offshore Wind Farm
Market
Offshore Renewables
System/end usage
Offshore Wind Turbine & Research
Operator or end customer
DOT
Installation contractor
Heerema Marine Contractors
Type of vessel
Heavy Lift Vessel
Name of vessel and owner
Aegir, Heerema Marine Contractors
Mode
Dynamic Positioning

Main Reasons for solution choice

NO NEED FOR GRIPPER OR INSTALLATION FRAME

UPENDING, LIFTING, DRIVING IN SINGLE OPERATION

IN COMBINATION WITH DP OPERATED VESSEL THE FASTEST WAY OF INSTALLING MONOPILES

SELECTED EQUIPMENT

CAPE VLT-320

Equipment configuration
CAPE VLT-320 Tandem
Eccentric moment
640kgm
Max. line pull
1,000t
HERO_D~2 HERO_M~4

offshore
vibro
technology

Discover how its unique features will uplift your next project; download the offshore vibro technology guide.

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