next generation wtg foundation and wtg installation...jun 14, 2018 · a fixed-price basis and...
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Next generation WTG foundation and WTG installation
WindDays – Rotterdam, 14 June 2018
Arnoud Bosch – Engineering Director
18 June 2018
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Subsea 7 Business Units
Life of Field: For more than 35
years we have provided clients
with inspection, maintenance and
repair (IMR) services, integrity
management and remote
intervention
SURF and conventional: We are a global market
leader in the Subsea Umbilicals, Risers and Flowlines
(SURF) sector. Most SURF projects are contracted on
a fixed-price basis and involve Engineering,
Procurement, Installation and Commissioning (EPIC)
services.
Renewables and Heavy Lifting: We are
experienced in the installation of offshore
wind farm foundations and substations,
heavy lifting for oil and gas structures and
decommissioning.
i-Tech Services
Subsea 7
Seaway Heavy Lifting
Siem Offshore Contractors
10-Aug-17
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Subsea 7 Renewables and Heavy Lifting Vessels
Oleg Strashnov (2011)5,000 Tonne DP Crane Vessel
Siem Moxie (2014)DP installation & commissioning support vessel
Stanislav Yudin (1985)2,500 Tonne Moored Crane Vessel
Siem Aimery (2016)DP Cable Lay and Trenching vessel
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Seaway Heavy Lifting
EMPLOYEES
Onshore / offshore: 550
HEADQUARTER
The Netherlands (Zoetermeer)
HOME PORT
SHL facilities (Europoort, Rotterdam)
OFFICES
Germany (Hamburg)
United Kingdom (Glasgow, Aberdeen)
France (Paris)
USA (Houston)
Cyprus
Taiwan
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Beatrice EPCI
ScopeSeaway Heavy Lifting (EPCI)
• 84 Foundations
• 91Array Cables
• T&I of 2 Substations
Siemens Transmission
• EPC of 2 Offshore Substations
• EPCI of Export cable
Siemens Wind Power
• EPCI of 84no WTG
Key interfacesEngineering
• Atkins
Fabrication
• Bladt (Jackets)
• Smulders (Jackets)
• Bifab (Jackets)
• EEW (Piles)
• SIF (Piles)
Cables
• SIEM
Transport & Installation
• Seaway Heavy Lifting
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Beatrice EPCI – Pile Installation Frame (PIF)
- SHL in-house designed PIF
- Successfully installed 344 piles within tolerance
- Extendable mud mats to level PIF
- Retractable shims in sleeve to allow hammer
sleeve in PIF sleeve
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Beatrice EPCI – Riggerless installation of Beatrice jackets
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Borkum West II
ScopeSeaway Heavy Lifting (EPCI)
• 32 Foundations
• Scour protection
Senvion
• EPCI of 32no WTG
Key interfacesEngineering
• JBO (steel parts)
• Recase (e-module)
Fabrication
• SIF
• Smulders
Scour Protection
• Tideway
Transport & Installation
• Seaway Heavy Lifting
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Borkum West II – MP-TP seal
- Bolted connection MP-TP
- No mini skirt with grout for corrosion protection interface MP-TP
- Inflatable seal to ensure air and water tight interface
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Monopile installation
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MP installation: Adopt – Adapt - Improve
18 June 2018 11
Greater Gabbard 2009
- Simple outrigger with fenders
- Manually controlled cylinders
to improve verticality of MP
Dudgeon 2016
- Motion compensated
cylinders
Borkum II 2018
- Outrigger 7m elevated to
improve stability for larger MP
- Noise mitigation screen
integrated in outrigger
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Next step: MP installation on DP
Critical stages during MP installation on Dynamic Positioning:
1. At low penetration level, the pile may lean on the vessel, so the DP system must be capable of
supporting the pile
2. At intermediate penetration, the DP system must be capable of
supplying force to correct pile verticality within specified tolerance.
3. At stable/full penetration, the pile acts as a mooring pile.
Does a moored connection destabilize the DP control system?
18/06/2018
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Next step: MP installation on DP
- Outrigger control model (MATLAB-Simulink) has been completed by Bosch Rexroth
- DP simulation model has been developed with RH Marine
- Coupled system of outrigger control model and DP simulation model
Conclusion:
- A coupled outrigger-DP system is required to ensure safe MP installation on DP
- The simulation results have been verified with the data we have measured during Dudgeon MP
installation. This has shown very similar results justifying the accuracy of the model.
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Coupled simulation Uncoupled simulation
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MP on DP installation using Monopile Installation Frame
18 June 2018Title Presentation 14
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MP on DP installation using Monopile Installation Frame
- Basic design MIF finished
- Proven concept
Similar concept as inhouse SHL designed
Pile Installation Frame (PIF) as used
on Beatrice project
- Integrated noise mitigation
system feasible
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Source: Vuyk Engineering
Future WTG’s – lifting height challenge
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Wind Turbine Generator installation from floating vessels
- SHL leading the Carbon Trust study on
floating installation of WTG’s
- Different concepts being studied
- Adjustments to WTG tower / nacelle / blades
required to facilitate installation
- Methods for separate installation of blades
being studied
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Slip joint connection MP-TP-WTG improving floating installation
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18/06/201819