20 monopiles for the Formosa 1 OWF

20 MONOPILES FOR THE FORMOSA 1 OWF

In 2019, the CAPE VLT-320 Triple was used to install 20 tapered monopiles with diameters up to 8.4 meter weighing up to 1,000 tonnes with lengths up to 79 meter, in a water depth of 31 meter for the Formosa I OWF in Taiwan.

The challenging soil conditions at the location posed a risk of pile run or drop fall. This risk was mitigated by the CAPE VLT, as there is a fixed connection between the tool and the pile and load is kept in the crane at all times.

Piles were installed to a safe depth (through pile run risk layers) and driven to final penetration with a large impact hammer.

Application details

Application
Monopile Installation
Pile type
Monopiles
Water depth
31m
Penetration
43m

PILE DETAILS

Pile type
Monopiles
Pile model
Tapered
Pile length
79m
Pile weight
<1,000t
Pile wall thickness
70mm
Pile diameter
8.4m
No. of piles
20

PROJECT DETAILS

Period
2019
Sea
Taiwan Strait
Country
Taiwan
Location
Of the North West coast
Market
Offshore Renewables
System/end usage
Offshore Wind Turbine
Operator or end customer
Swancor Renewable
Installation contractor
Seaway 7 for Jan De Nul
Type of vessel
Heavy Lift Vessel
Name of vessel and owner
Seaway Yudin, Seaway 7
Mode
Anchors

Main Reasons for solution choice

ELIMINATE PILE RUN/DROP FALL

EXTRACTION POSSIBLE

SELECTED EQUIPMENT

CAPE VLT-320

Equipment configuration
CAPE VLT-320 Triple
Eccentric moment
960kgm
Max. line pull
1,000t

offshore
vibro
technology

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