Archeological measurement campaign French contiguous zone

Nemo Link has executed in September a measurement campaign in the French contiguous zone that will be crossed by NEMO Link.

The retrieved data are being used in the context of an archeological study requested by DRASSM (French governmental research agency). This study should be finalized by May 2017 in order to assure that no damage to objects of archeological value could occur during the installation works of the cables in the French part of the NEMO route.

That is why a team of geotechnical staff of the company GTEC and NEMO Link’s cable project engineer Erwann Bauwens went offshore during a period of around 14 days to execute amongst others magnetometric and sidescan sonar measurements.

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Richborough remediation – turbine hall demolition time lapse video

The land remediation phase at the Nemo Link UK Converter site in Richborough is now coming to an end.

A key element of this phase involved the demolition and removal of the derelict turbine hall steel frame structure which used to dominate the Richborough skyline. Following a rigorous risk review process this mammoth structure was systematically broken down piece-by-piece, processed on site and recycled by Siemens Subcontractors Erith Demolition Ltd.

As with all large scale demolition works, there were a number of notable activities that needed to be closely managed throughout, including heavy lifting, working at height and ground vibration consideration. In addition these particular works were made more complex due to the close proximity of a live substation.

After several carefully planned weeks this inherently risky work was completed without any serious incidents or injuries to the workers involved, and also involved the safe removal and processing of asbestos deposits left behind from the sites power generation days. In order to create a record of this significant work the Nemo Link team commissioned a time-lapse camera facing the turbine hall for the duration of the demolition phase.

Nemo Link SHES Manager, Craig Silcock said “The safe demolition of such a large, awkward and heavy steel structure with a limited working area is a real positive achievement for the site team and our contractors, and it gives us an excellent safety platform for us to build upon as the project progresses into the construction phase”

Time lapse video:

Richborough converter – ready for start of civil construction works

On Thursday the 22nd of September NEMO reached a major milestone for construction of the UK HVDC converter station at Richborough. The deconstruction of the relic steel structure which once housed the Turbine Hall of Richborough power station was completed and the work area was handed back to the principal contractor Siemens. This marked the removal of all above ground structures associated with the former PowerStation.

Arial photograph of original PowerStation:

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Decommissioning of the power station started as far back as 1996 when much of the site was cleared leaving the turbine hall, accommodation block, chimney and cooling towers. The cooling towers and chimney a local landmark at the time were brought to ground level in a controlled explosion on the 11th of March 2012.

NG Video of demolition of the cooling towers and chimney:

Throughout 2016, the remediation of the power station ground has been methodically carried out, removing below ground structures and placing a coarse aggregate surface finish ready for installing the new foundations and over 800 piles.

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Over the last 4 months’ contractors have work meticulously to remove approximately 1000 Tonnes of steel one piece at a time. These segments were then broken down into manageable pieces at ground level and removed from site for recycling. This complex operation was expertly executed and despite the sometimes challenging weather conditions, all operations were done safely and without injury.

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J Murphy’s and Sons Ltd have now been appointed as subcontractor to Siemens and will now take the lead on site for the next phase of the project, civil construction into 2017.

Russell Smalley (UK Project Manager)