Free hanging monopile installation test

FREE HANGING MONOPILE INSTALLATION TEST IN THE NETHERLANDS

In 2018, the CAPE VLT-320 Tandem was used to upend and install a 6.5 meter diameter monopile with a length of 30.4 meter at the Maasvlakte 2 in Rotterdam, the Netherlands.

The pile was successfully upended and driven to final penetration. The pile needed to be stable for a test of a new type of impact hammer which would have needed a special installation frame otherwise.

Free hanging from the Matador 3 from Bonn & Mees the CAPE VLT only needed a net driving time of 15 mins to get the 330 tonnes weighing monopile to a penetration depth of 24 meter.

Without any other tool, gripper or installation frame the pile ended up at 0.05° verticality which was well within the set tolerance. This project showed how the verticality could still be corrected even at final penetration.

Application details

Application

Monopile installation

Pile type

Monopiles

Penetration

24m

PILE DETAILS

Pile type

Monopiles

Pile length

30.4m

Pile weight

330t

Pile wall thickness

60mm

Pile diameter

6.5m

No. of piles

1

PROJECT DETAILS

Period

2018

Country

The Netherlands

Location

Maasvlakte 2, Rotterdam

Market

Offshore Renewables

System/end usage

Test pile

Operator or end customer

Fistuca

Installation contractor

Fistuca

Type of vessel

Floating sheerleg

Name of vessel and owner

Matador 3, Bonn & Mees

Mode

Anchors

Main Reasons for solution choice

UPENDING, LIFTING, DRIVING IN SINGLE OPERATION

NO NEED FOR GRIPPER OR INSTALLATION FRAME

VERTICALITY MONITORING DURING DRIVING

SELECTED EQUIPMENT

CAPE VLT-320

Equipment configuration

CAPE VLT-320 Tandem

Eccentric moment

640kgm

Max. line pull

1,000t

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