22 November, 2017

Enerpac Synchoist positions Tahkoluoto Wind Farm Foundations

27 October, 2017

A Synchoist load positioning system, from Enerpac Heavy Lifting Technology, has been used by Finnish wind power production company, Suomen Hyötytuuli Oy, for the installation of gravity base foundations at the Tahkoluoto Offshore Wind Farm, Pori, Finland. The Tahkoluoto Wind Farm is said to be the world’s first offshore windfarm designed for operation in ice conditions.


Operated by Suomen Hyötytuuli Oy, the Tahkoluoto Offshore Wind Farm includes 10 offshore wind turbines, each with a capacity of 4.2 MW. Following preparation of the seabed to provide a level surface, the hollow gravity base foundations weighing up to 500 tonnes were installed. During lowering through the splash-zone and positioning on the seabed, the Synchoist system was used below the crane hook to ensure the foundation remained as close to vertical as possible. This prevented damage to the levelled seabed surface and facilitated the subsequent addition of the turbine tower.

Synchoist X-frame lifting tool

To handle the foundation lift without distorting the transition piece flange used to connect the turbine tower, an X-frame lifting tool was developed that connected to the flange. It comprised a lifting frame with four SyncHoist, self-contained PLC-controlled, double acting, push-pull hydraulic cylinders at each corner, and diesel hydraulic powerpack with battery back-up.

High precision manoeuvring of the foundation by the Synchoist system was performed wirelessly by an operator working alongside the foundation installation team. This allowed the operator to lift and lower each cylinder independently to balance, tilt and position the load in response to feedback from four levelling sensors on the foundation.

Accurate positioning

“We wanted the X-frame lifting tool to be completely self-contained without any hoses or wires connected to the vessel. This way we had maximum flexibility in the movement of the foundation,” said Xavier DeMeulder, marine operations manager, Suomen Hyötytuuli Oy. “The Synchoist wireless control was excellent, enabling us to make adjustments of as little as 5cm during the installation.”

During installation, the level of the foundation was measured, and where necessary adjusted, at every stage of the lift. At the quayside before the lift – this was to establish the centre of gravity for each foundation, on the vessel, just above the water, 3-4 m into the splash-zone, and 5 cm above the foundation.

DeMeulder continued: “Synchoist made the job of installing the gravity base foundations a good deal easier than using a tailor-made levelling system. The first foundation took 12 hours to install, later foundations took 8 hours as the installation team became more proficient.”

www.enerpac.com




Events
 
Buyers' Guide Search
 
Search for UK supplier by name
Browse by Product Group.
Magazine
Magazine To view a digital copy of the latest issue of Hydraulics & Pneumatics Magazine, click here.

For a FREE subscription please click here

Air-Tech Exhibition 2018
Previous IssueTo view a digital copy of the September issue of Hydraulics & Pneumatics Magazine, click here.

For a FREE subscription please click here

Fluid Power & Systems 2018
Buyers Guide - July/August Issue 2017To view a digital copy of the Buyers' Guide issue 2017 issue of Hydraulics & Pneumatics Magazine, click here.

July/August 2017 Annual Buyers Guide Issue
BFPA YearbookTo read the latest BFPA Yearbook, click here
BFPA Training AcademyClick the image to go to the BFPA Training Academy website
Compressed Air & Vacuum Technology Guide 2016To read the official BCAS Compressed Air & Vacuum Technology Guide 2016 click here
Smart Machines & FactoriesSmart Machines & Factories Magazine - the UK's first dedicated journal focusing on the fourth industrial revolution and transforming to a smart manufacturing era.
Newsletter
 
Newsletter