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Found Ocean wins contract on experimental offshore installation

SeaRoc has announced that it has awarded a grouting contract for the Narec Offshore Anemometry Hub (NOAH) met mast to Found Ocean.

The installation, which will be located three nautical miles off the coast of Blyth in Northumberland will be equipped with a variety of monitoring sensors to collect the necessary environmental data to inform the development, construction and operation of the proposed Blyth Offshire Wind Demonstration Site.

Found Ocean has said that the 60m high tripod foundation, which weighs 535t, will be support a 70t platform and a 25t meterological mast.

The platform will be secured using a rock socket grouted connection and a grouted pile sleeve connection located at each of its three legs, due to the condition of the seabed.

The grouting operation for all three foundations will take place in two stages with the jacket placed on the seabed at a depth of 38m during the first stage and followed by the drilling of a 10m deep rock socket through the pile sleeve. Found Ocean will then mix and pump a specialist grout into the socket and a stab-in pile will be lowered through the sleeve and into the grouted rock socket. Once the rock socket connections are established, grout will be injected into the annuli between the piles and the tripod sleeves via connectors above sea level.

Grouting is expected to be completed this month.

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