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IHC IQIP supporting SHL at Beatrice

By: Tom Russell 28/02/2017 IHC IQIP

Foundations General Windfarms

IHC IQIP (IHC) has announced that it will supply Jacket Pile Grippers (JPGs), a Hydrohammer S-2500 with two specially designed hammer sleeves as well as an Internal Lifting Tool (ITL) to Seaway Heavy Lifting (SHL) for its work at the Beatrice offshore wind farm.

IHC’s JPGs are welded to the jacket structure at the jacket fabrication sites. For a total of 84 jackets to be fabricated in total 336 JPGs will be delivered and commissioned. Driven by high demands from relevant design codes regarding early age cycling of grout connections, the JPGs are designed to prevent relative displacement between jacket structure and pre-installed piles during grouting and curing.

Production of the JPGs at IHC IQIP’s yard in Sliedrecht has already commenced and delivery to the fabrication yards will be ongoing until early 2018.

IHC's Hydrohammer S-2500 and its specially designed hammer sleeves is used to drive piles up to a minimum stick-up height of 2m. The newly designed sleeves – combined with the retractable spacers inside the sleeves of the pre piling template – have been developed to drive piles without using a large follower. IHC stated that this results in a significant reduction in required deck storage space and handling of heavy equipment.

A pre-piling template will be used to install piles in the correct location, at the appropriate inclination and stick-up height prior to installing the jacket. SHL and IHC jointly developed pre-piling template.

The IHC 1,200t ITL will be used to deploy and and recover the pre-piling template and subsequently for stabbing of the individual piles into the sleeves of the pre-piling template. At a later phase the ILT will also be used for jacket installation.

The Beatrice project is a joint venture between SSE Renewables Limited, SDIC Power of China and Copenhagen Infrastructure Partners. It is situated in the Outer Moray Firth off the east coast of Scotland and the project owners reached financial close on the 23rd May 2016. It is expected that the wind farm will be operational by 2019.

The project features 84 Siemens 7MW wind turbines which shall be inter-connected by an inner array grid of 91 33kV medium voltage alternating current submarine composite cables with a total length of up to 164 km. All turbines will be founded on pre-piled jacket substructures, which will be installed at a water depth up to 55m.

Design, engineering, fabrication and installation of the foundations is being managed by SHL. The company has since hired Smulders, Bladt and BiFab to fabricate the jackets ready for installation in April 2017.

For more information please follow the links provided. You can also view offshore wind projects worldwide using our interactive map.

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IHC IQIP supporting SHL at Beatrice

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