Marine Survey Work Starts for Greenlink Interconnector

Posted by Michelle Howard
Tuesday, September 25, 2018

The subsea field work for the Greenlink interconnector, one of Europe’s most important infrastructure projects, gets under way with the launch of the first of MMT’s survey vessels, MV Franklin.

The offshore and nearshore surveying along the proposed route of the electricity link between the UK and Ireland is expected to take approximately 40 days, depending on weather conditions. MMT were awarded the contract for the Greenlink Marine Survey (GMS) by Greenlink Interconnector Ltd in August.

Further survey work along the 170km marine route will be undertaken by vessels MV Seabeam, MV Edda Fonn and RED7 Jack-up rig Seariser 2. 

The survey area is between Freshwater West, Pembroke, Wales and Baginbun, Co Wexford, Ireland. A Notice to Mariners has been issued for the area.

The objective of the GMS is to acquire all appropriate data for the confirmation of a preferred route for the High Voltage Direct Current (HVDC) cable system. The surveys will also contribute to the cable burial risk assessment and provide information for the planning applications ensuring that the final route selected is designed sympathetically to the existing marine environment.

Greenlink is a proposed 500MW electrical underground and submarine interconnector, connecting the UK National Grid system at Pembroke substation in Pembrokeshire, Wales to the Irish network at Great Island substation in County Wexford, Ireland. The privately-financed €400 million ($471 mln) project is being developed by Greenlink Interconnector Limited, a subsidiary of Element Power. The commencement of the GMS represents a significant milestone in the development of the project, in preparation for the start of construction scheduled for 2020.

MMT’s geophysical marine survey work comprises intertidal topographic survey, geophysical / hydrographic nearshore and offshore data acquisition, geotechnical investigations with vibrocoring / piston coring and cone penetration testing (PCPT), environmental sampling and imagery, infrastructure crossing survey with ROV, UXO survey, and geotechnical boreholes to inform horizontal directional drilling.

These operations shall provide high resolution and accurate measurements of the bathymetry and seabed features and the shallow geological conditions along the route(s). This will be supplemented by localized unexploded ordnance (UXO) surveys, environmental sampling and imagery as well as surveys of infrastructure crossings using an ROV.

Categories: Vessels Surveyors Offshore Energy Unmanned Vehicles Hydrographic Engineering Subsea

Related Stories

‘Ultra-Mega’ Offshore Deal for L&T at QatarEnergy LNG’s North Field Gas Scheme

MODEC Gets Shell’s Gato do Mato FPSO Ops and Maintenance Job

Sapura Energy Nets $720M from Multiple Drilling Services Contracts

Europe's Gas Uncertainty Help Drive Asian LNG Spot Prices Higher

Vestas Lands First 15MW Offshore Wind Turbine Order in Asia Pacific

Flare Gas Recovery Meets the Future

The Five Trends Driving Offshore Oil & Gas in 2025

Floating LNG Conversion Job Slips Out of Seatrium’s Hands

RINA to Conduct Pre-FEED Study for Petronas’ CCS Project in Malaysia

OPEC+ Passes on Oil Output Increase, Weighs the "Trump Effect"

Current News

CNOOC Makes Major Oil and Gas Discovery in South China Sea

Valeura’s Assets in Gulf of Thailand Remain Operational After Earthquake

Op-Ed: Kazakhstan’s National O&G Firm Positioning Itself as Global Energy Player

Woodside to Shed Some Trinidad and Tobago Assets for $206M

CNOOC Sees 11% Profit Growth in 2024 Driven by Record Oil Production

‘Ultra-Mega’ Offshore Deal for L&T at QatarEnergy LNG’s North Field Gas Scheme

Keel Laying for Wind Flyer Trimaran Crew Boat

MODEC Gets Shell’s Gato do Mato FPSO Ops and Maintenance Job

EnerMech Names APAC Regional Chief

CIP Reaches Financial Close for Offshore Wind Farm in Taiwan

Subscribe for AOG Digital E‑News

AOG Digital E-News is the subsea industry's largest circulation and most authoritative ENews Service, delivered to your Email three times per week

https://accounts.newwavemedia.com