220 kV AC Connections Cluster West of Adlergrund
Marine Survey for Cable Route Design and Engineering.
Next Geosolutions has been appointed to perform a marine survey for cable route design and engineering for the Project “220 kV A.C. Connections - West of Adlergrund” in the western Baltic Sea off Germany.
The Project consist of multiple 220 kV AC grid connections of the two offshore wind parks (OWP) “Arkona Basin South-East” and “Wikinger” located in the western Baltic Sea off the north-eastern coast of Germany.
Along the cables corridor, approx. 90 km in length, are planned:
From the shoreline to the sea/land joint bays area.
The inshore and offshore survey include:
Both in-service (two pipelines and one fibre-optic cable) and out-of-service (three telecommunication cables), by pipe/cable tracker mounted on ROV and video survey.
By VibroCorer and PCPT, with both onsite/on-board classification and on-shore lab testing.
To complement any sections of the Final Selected Routes (FSR).
To be carried out on-site/on-board.
The planned cable connection shall convey up to 155 Mega Watt electrical power at 220 kV generated by 31 offshore turbines.
The unique way we combine methodologies and innovation to reach the best possible result in the most effective way.
The surface positioning shall be carried out by means of a DGPS satellite radio-positioning system. A marine gyrocompass with the highest accuracy shall be used and interfaced to the Data Logger and Navigation Computer.
The visual inspection shall be carried by an ROV along the unburied cable sections. Where the cables are buried shall be use a cable tracker mounted on the ROV itself.
The underwater positioning shall be ensured by means of a USBL system, interfaced with the data logger and navigation computer.
The bathymetric survey shall be run by using hydrographic multibeam Echosounder. Bathymetric raw data collected shall be processed in real-time on board and delivered to the reporting team onshore, for the final revision and reporting.
To characterise the geomorphological setting of the seabed and to detect/verify the presence of any obstacles and/or seabed features, the High Resolution Dual Frequency Digital Side Scan Sonar shall be operated for the marine survey.
A suitable sub-bottom profiling system shall be used in order to help and integrate the interpretation of sonar data and give a continuous and clear definition of the bottom nature and sub-bottom stratigraphy.
To detect any magnetic anomaly and ferromagnetic target, a suitable towed marine gradiometer shall be used during the survey.
The geotechnical survey shall be carried for the detailed Burial Assessment Study (BAS). Geotechnics shall be performed after all the other previous survey tasks. The geotechnical campaign for the BAS shall be performed by:
The aim of the UXO survey is the detection of any explosive ordnance on the indicated areas.
A detailed topographic survey shall be performed at landfall both onshore and nearshore, by means of RTK DGPS technology.
We adopt QHSE Management Systems which embody all aspects of Quality Assurance, Competence Monitoring and Risk Assessment, as well as comprehensively addressing Health, Safety & Environmental issues.
Next is committed to always deliver products and services of a consistently high quality, aiming to meet and possibly exceed the Client’s requirements and expectations. The health and safety of employees and other persons involved are safeguarded, and proper regard is paid to the conservation of the environment.
NEXT QHSE Management Systems are fully in-house managed.
The resources and technologies which have concurred to the marine survey for cable route design and engineering in the Baltic Sea.
|Topographic Equipment for Alongside Calibrations||DGPS-RTK Leica SR530|
|Primary Surface Positioning||C-NAV 3050 GNDSS Positioning System|
|Primary Augmentation Signal||C-NAV C2 differential correction signal|
|Secondary Surface Positioning||C-NAV 3050 GNDSS Positioning System|
|Secondary Augmentation Signal||C-NAV C2 differential correction signal|
|Data Acquisition & Navigation System||Integrated HW/SW Data Acquisition and Navigation System, c/w PC, monitor, helmsman monitor, cabling and other accessories|
|Data Acquisition & Navigation Software||QPS QINSy software package, c/w MBES module|
|Heading & Attitude||Applanix POS-MV WaveMaster|
|Heading & Attitude (Back-up)||Ixsea Octans|
|Underwater Acoustic Positioning System||USBL Sonardyne Scout + 4x WSM transponders|
|Single-beam Echosounder||Atlas DESO 17|
|Multi-beam Echosounder||Reson SeaBat 8125 multi-beam system|
|Side Scan Sonar||Dual Frequency Digital Side Scan Sonar Edgetech 4200, c/w DAS|
|Sub-Bottom Profiling 1||SBP Oretech 3010 (2x2)|
|Marine Magnetometer/Gradiometer||Marine Gradiometer composed by 2x Geometrics G882 magnetometers (tailed to SSS)|
|Sound Velocity Profiler||Valeport Midas SVP|
Call us or send an email with your enquiry or proposal