CAPABILITY STATEMENT Consultancy Services within Offshore Wind Energy
1. 2. 3. 4. 4.1 4.2 4.3 4.4 4.5 4.5.1 4.5.2 4.5.3 4.5.4 4.6 4.7 4.8 4.9
Introduction The Ramboll Group Ramboll Offshore Wind Consultancy Services Project Development Permitting, Approval and Project Certification Site Investigations and Site Assessments Wind Turbine Technology Structural Design Services Wind Turbine Foundations Transformer Platforms Design of Electrical Infrastructure Design for Decommissioning Design Risk Assessments Project Enquiry and Contracting Fabrication Supervision Construction Management and Supervision
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INTRODUCTION To design, construct, operate and maintain an offshore wind farm located in a harsh environment, and often far from shore, requires a multitude of skills and experiences, and represents management of many interfaces and risks, to be identified, considered and managed years before they become concrete. By investing in the necessary investigations, and engineering and design exercises at the "right" point in time for the actual project, many resources and much money can be saved throughout the lifetime of a project providing an overall minimum lifetime cost. Ramboll Offshore Wind strives to engage in - and to perform such services.
THE RAMBOLL GROUP The Ramboll Group is amongst the leading consultancy groups on a European level. From the establishment in 1945 we are now close to 10,000 employees in 190 permanent offices in 24 countries. The Ramboll Group is an independent and multidisciplinary consulting group offering primarily engineering and design services, but is also engaged in architecture, management consultancy, socioeconomics and other related services. We emphasise local experience combined with a global knowledge-base. We constantly strive to achieve inspiring and exacting solutions that make a genuine difference to our clients, the endusers and society as a whole. Ramboll operates within the areas of: Buildings, Transport, Energy, Environment, Oil & Gas, and Management Consulting. The Ramboll Group is owned by a foundation and is independent of external interests.
RAMBOLL OFFSHORE WIND Ramboll Offshore Wind (ROW) has been engaged in onshore wind projects designing turbine towers and foundations since 1986, and has been involved in offshore wind projects since 1989 participating in the design of the first Danish test project at Vindeby. Today ROW operates as a division within Ramboll Energy and has existing offices in Copenhagen, Aarhus and Esbjerg in Denmark, in London in the UK, and in Hamburg in Germany and employs approx. 160 full time staff dedicated to offshore wind projects. Besides these staff we draw on a pool of competencies from the rest of the Ramboll Group, such as geotechnical, geophysical, hydrodynamics, CFD modelling, and environmental science so that of today approximately 175 full time equivalent staff is employed on offshore wind projects. Our capabilities originally stem from our 30 years of experience within the offshore oil & gas industry, but have, within the last 15 years, also been developed to include offshore wind energy, and the many issues applicable to design of offshore wind turbine foundations and offshore transformer platforms. In 2012 Ramboll acquired IMS Ingenieurgesellschaft GmbH in Hamburg, Germany, and LAC Engineering in Aarhus, Denmark adding their respective capabilities and experiences within structural design, turbine technology and turbine load calculations to the total pool of knowledge. In addition to our own permanent staff ROW draws on the competencies, resources and staff of our many offices, and thereby, ensures that we also consider best local practice and local legislation.
CONSULTANCY SERVICES As a multidisciplinary consulting firm and with more than 25 years of experience within planning of energy projects and design of offshore oil & gas structures, and with 65 years of experiences with design of large infrastructure projects we are in a very good position to offer a huge variety of consulting services within offshore wind, as follows.
Project Development Energy Planning As part of the Energy Unit in Ramboll we perform overall planning of energy supply of local - and of regional areas, and work with optimising the mix of energy sources to provide the best possible solutions with respect to efficiency, local resources, cost of energy and to the environment. As part of these studies we work with, amongst others, storage of surplus energy produced by wind farms, and with energy carriers other than the traditional consumption. Trade and Transmission of Electricity As an extension of the work with energy planning we perform studies concerning trade and transmission of electricity to enable our clients to decide market strategies for the trading of the produced electricity. These studies look into available market opportunities and price forecasts for the respective markets. Technical and Financial Risk Analysis and Management To assist our clients in identifying and to manage and mitigate technical and financial risks associated with offshore wind projects we perform technical and financial risk assessments, with respect to costs, income and time. In such a risk assessment we define, in close cooperation with the client, the various risk elements we estimate the probability of the occurrences and estimate the consequences. All this information is then inserted into a Monte Carlo simulation giving e.g. project costs or net present value of the entire project as a function of the probability. Delays of the time schedule for the project can either be modelled directly, or a more simple approach capitalizing delays can be applied by estimating the loss of revenue. Navigational Risk Analysis For input to the permitting phase and to the service life phase of the projects we estimate the risk of vessels entering into the project area and colliding with wind turbines or transformer platforms. The potential consequences of a vessel entering into the project area are several: collisions with installation vessels, spillage of e.g. oil, damages to the hull of the vessel, loss of wind turbines because of structural collapse or damages to or collapse of the transformer platform. The consequences of the various collisions are varying from everything to small damages to vessels or structures and up to temporary shutdown of the electricity production for a year or two because of loss of the transformer platform. In the latter case we use the navigational risk analysis to estimate the probability of a collision for various ship sizes, and thereby the structural loads to be considered in the design of the transformer platform. Scheduling and Planning Development, permitting and implementing an offshore wind project may easily take 5 to 8 years and needs proper planning and scheduling to ensure that information is available when required, and that physical elements, e.g. long lead items, have been designed and ordered in due time. Therefore, it is important that a proper time schedule is established at an early stage and maintained throughout the various project stages. Such a time schedule should contain all dependencies to be able to assess impacts from variations to the planning. As a multi disciplinary firm we are capable of establishing such time schedules including all elements of the projects, and we are, further, capable of applying the results from the technical and financial risk assessment into these schedules. Wind Studies We are currently capable of performing wind studies and production estimates for wind farms applying more simplified software sufficient for early feasibility studies estimating potential income and expenses for the new projects. We are further capable of assessing wind measurements with respect to statistical validity compared to long term measurements from
other stations. For performance of more detailed wind studies and micro siting, where it is a requirement to be considered bankable, we would usually contract a sub consultant, but still act as a single point of contact. Feasibility Studies, Due Diligence and Project Budgets We perform feasibility studies and due diligence for assessment of projects from early stages of the projects and up to where projects may be traded after implementation and start of service. The degree of detailing will depend on the amount of information available, or whether we are able to locate information ourselves. In connection with these studies we usually breakdown the projects into smaller cost â€“ and income elements to better be capable of estimating the variability/uncertainty of each element. If more factual information is available we can also model the feasibility of a project by the technical and financial risk assessment. Turbine Foundation Budgets Based on our vast experience within turbine foundation design and on the large number of designs we have performed we have developed an in-house Foundation Budget Tool to be used for cost estimation and investigation of cost variability in feasibility studies. In the budget tool we are capable of varying: wind turbine size and type, foundation concept, ground conditions, water depth, wave size, ice/no ice, weather down time during installation, and to consider variations in water depth over an entire project. The output from the budget tool is material quantities and costs broken down into design, investigations, fabrication, installation, risk, insurance and profit. When tested against competitive pricing from real projects we have usually been within an uncertainty of +/- 10% to 15%.
Permitting, Approval and Project Certification Environmental Impact Studies and Assessments Most countries require performance of an environmental impact assessment, EIA, and delivery of an environmental impact statement, EIS, in which the various impacts on the environment are investigated, estimated and reported. The EIS includes a number of investigations of the flora and fauna on the project site, and considers the impacts on the flora, the fauna, and on the human population as well. As a multi disciplinary consultant we are capable of performing all the investigations and to assess the impacts from the project both during the implementation as well as during the service life and finally the decommissioning, as we do have in-depth knowledge of all the designs and the processes. We further perform the follow-up monitoring of impacts to document fulfilment of the requirements. BSH Approval In Germany the authority BSH is involved in the permitting process in addition to the environmental authorities and to the certifying bodies performing the project specific certification. Via our performance of German projects and our dealings with the BSH we are well suited and experienced in communicating with - and obtaining approvals from the BSH. Project Certification Most projects require a project certification in order to have them approved by the financial community, the insurers or if they are to be sold off at a later stage. As of March 2011 we have performed detailed foundation design and obtained certification of 21 offshore wind projects, which constitutes more than half the existing projects Worldwide, and are, therefore, very experienced in dealing with the independent certifying bodies, such as DNV, Germanische Lloyd and SGS.
Site Investigations and Site Assessments Geophysical Investigations Geophysical investigations are used for a relatively fast mapping of the seabed contours, bathymetry, and of the foundation soil layers usually involved in the support of the foundation structures for the wind turbines and the transformer platforms. The geophysical investigations are also applied in connection with the mapping for the environmental impact assessment, EIA, and for studies of seabed sediment movements as travelling sand dunes. We are in a position to
offer these services performed by our own staff, or to specify, contract and supervise the work on behalf of the client. From being multi disciplinary we are capable of considering all aspects to be investigated in defining the scope for these investigations: environmental investigations as well as early investigations for determination of the foundation structures, and thereby, achieve an optimized survey program. Geotechnical Investigations In order to properly assess the strength of the foundation soil for the design of the structures for the wind turbines and the transformer platforms, and to properly estimate excavation works for the cables, and finally to evaluate issues concerning the installation works geotechnical investigations are performed using drilling of boreholes and measurements such as cone penetration tests, CPT tests. From many years of experience within offshore soil mechanics we are well positioned to specify, contract, supervise and interpret such investigations and laboratory tests. Metocean Studies and Reports Metocean data in the form of long-term information concerning wind and waves, and their respective correlation with the wind, is of importance to the structural design, and when assessing access and constructional conditions with respect to sea states. This metocean data can be made available by numerical modelling or measurements by a buoy, or in a combination thereof. For conceptual - and for FEED design foundation studies a numerical model will suffice in every respect. For detailed foundation designs for construction, it is best to apply verified longterm data to calibrate the numerical model, to achieve the best possible accuracy and for not to be too conservative in the design. In case verified data is readily available, this data can be used to calibrate the model without further measurements. In case this data is not available, measurements will have to be made to support the numerical model. We operate our own numerical models, the MIKE suite of programs, to be capable of developing basis for design and for evaluation of sea states for constructional and access purposes. Local â€“ and Global Scour and Erosion Installation of structures and cables in the seabed changes the flow regime for the sea water and may course local erosion around the structures and the cables by removal of seabed material, depending on the type of seabed sediments. As the seabed forms the support of the structures and the cables, it is important to either prevent this erosion by deploying stones or to estimate the extent of the erosion, so that it can be considered in the design. We usually design for both situations to be able to make a cost benefit analysis to investigate which of the two options is the most cost optimal. This investigation will also consider probable future cost of inspecting and maintaining the erosion protection. In detailed foundation designs we will usually perform such an investigation for each individual wind turbine foundation and structure, to achieve an overall optimisation of the cost. 4.4
Wind Turbine Technology Functional and Technical Specifications The choice of wind turbine is not trivial, as it is impacted by many different factors such as: "proven technology", performance under certain conditions such as average wind, cut-in/cut-out wind speeds, early production for lower wind speeds, requirements to operation and maintenance and organisation to perform the O&M, interaction with the public grid etc. ROW has established such functional and technical requirements for several projects, and incorporated these into project enquiries and into contracts. O&M Requirements and Monitoring As part of the definition of the functional and technical requirements we define the requirements to the operation and maintenance of the wind turbines. We also deliver requirements into to the O&M procedures for the structures, erosion protection and cabling. Following the implementation of an offshore wind project we can either perform inspections ourselves, or we can monitor the performance by others.
Test and Commissioning When involved on the developer side of the projects we act on behalf of the developer during the test and commissioning, and the handing over of the projects, to ensure that the project fulfils the contractual requirements, and that this is properly documented. Cold Climate Conditions Cold climate conditions for the wind turbines are often associated with onshore wind farms locate in cold climate areas, and not with offshore projects. However, the increasing interest in developing offshore wind farms in the north eastern Baltic area, and in the Great Lakes in USA and Canada, means that there is now a requirement for considering these climatic conditions when defining the technical and the functional requirements. From our previous experiences in the northern Nordic regions we have experiences in establishing such requirements and in reviewing the proposed solutions concerning the wind turbines. Turbine Loads, Control and Monitoring Via the acquisition of LAC Engineering Ramboll Offshore Wind is capable of assessing turbine and site specific turbine loads for design calculations for the foundations, and also capable of performing integrated load simulations. The integrated design load calculation approach employed puts emphasis on the generation of a fully integrated offshore wind turbine model for aero elastic analyses. It comprises of three sequential steps ensuring a proper representation of all relevant subsystems and loads in the design load generation process. This allows combining the benefits from a sophisticated foundation and hydrodynamic load representation in our in-house design software ROSA with the state-of-the-art modelling approach of the rotor-nacelle-assembly, tower, aerodynamic loads and controller in LACflex. 4.5
Structural Design Services From being a multidisciplinary consultant and design firm we are capable of designing most objects and to consider many different impacts on the structures to be designed. We are further capable of designing for a multitude of materials and according to many different codes and standards, such as e.g. Euro Code, API, ABS, ASTM, DIN and ISO.
Wind Turbine Foundations
Ramboll is currently one of the leading consultants within design of foundations for offshore wind turbines, and have a profound experience within design of monopiles, jackets and other foundation types, where we apply in-house state-of-the-art software for the designs. Our load calculation group is, furthermore, capable of providing early site specific turbine load calculations for the use in conceptual and FEED designs. Further, we have very extensive experience in performing load iterations with all major turbine vendors, including for jacket structures. We have currently performed load iterations for turbine sizes up to 8MW. Our references include Detailed Design of foundations for megawatt type turbines for offshore projects in:
Denmark Sweden UK Germany The Netherlands Belgium USA
We have performed conceptual and tender designs for developers, utility companies, turbine manufacturers and foundation contractors. The foundation concepts have included gravity base structures of both steel and concrete, monopiles, tripod - and jacket foundations, and suction buckets. Conceptual and tender designs have, in addition to the above countries, been performed for projects in Russia, Finland, China, France, Spain, Ireland, Estonia, and Latvia.
We have completed detailed design of monopile and jacket foundations and for gravity concrete cones for more than 30 Offshore Wind Farms, all approved by a third party certification agency, which provides Ramboll with a market share of over 50% of the so far installed offshore wind foundations worldwide. A list of the designs we have - or are currently performing is shown below.
Klasarden Burbo Bank
On Hold Completed
[MW] 44 90
Lynn & I. Dowsing Kentish Flats Robin Rigg Rhyl Flats
Completed Completed Completed
UK UK UK
90 180 90
Greater Gabbard Thanet Bligh Bank (Belwind) Sheringham Shoal Walney
Gwynt Y M么r
Amrumbank West Baltic 2
Humber Gateway Confidential
Fife Energy Park Luchterduinen (Q10) Gemini
NM92 SWT-3.6107 SWT-3.6107 Vestas V90 Vestas V90 SWT-3.6107 SWT-3.6107 Vestas V90 Vestas V90 SWT-3.6107 SWT-3.6107 SWT-3.6120 SWT-3.6120 SWT-3.6107 SWT-3.6120 SWT-2.3101 REpower 5M
Water Depth [m LAT] 4-8 2-8
PNB Entr. MTH
NEG Micon DONG
5-8 13 4-12
MTH MTH MTH
Vattenfall Eon C&R RWE
SSE & RWE
Vattenfall Van Oord
SWT-3.6120 SWT-3.6120 Vestas V112
Energieko ntor E.On
BARD Offshore I
SWP-4.0130 SWP-3.6107 BARD 5.0
Typhoon Offshore Cape Wind Asc. BARD
Typhoon Offshore Cape Wind Associates BARD
BARD Hooksiel London Array
BARD 5.0 SWT-3.6122 SWT-3.6122 Vestas V112-3.0 SWT-3.6122 Areva
Water Depth [m LAT] 2-6
IBERDRO LA Renovables
For all of the above projects we have been the designers of both primary and secondary steel, performed the load iterations between the turbine vendor and the structural designer, and liaised with the WTG manufacturer and Certification Agencies as necessary.
JACKET DESIGN FACTS Extensive experience As part of the above mentioned detailed designs, we have performed detailed design for two wind turbine prototypes, size 6MW and 7MW, with jacket structures. Further, we are, together with a partner, currently progressing the design of the jackets for the Wikinger project in Germany. In addition, we have done and are currently developing several conceptual and FEED designs for other projects with jacket structures.
The number of jacket and monopile projects that Ramboll has carried out, has provided us with extensive expertise and experience with the requirements of the certifying agencies, installation contractors and marine warranty surveyors. Ramboll is the only company in the world that has carried out Detailed Design of numerous offshore wind farms for 8 different WTGs, including Vestas V90, Vestas V112, Siemens SWT-36107, Siemens SWT-36-120, Siemens 4.0, Repower 5MW, Alstom HALIADE 6MW and Samsung 7MW. Hence we offer unprecedented experience in the design process together with different manufactures, which can enable more effective cooperation due to known interfaces.
Example of an offshore wind jacket designed by Ramboll
Ramboll render the full suite of multidisciplinary engineering consultancy services within offshore wind energy projects. On this background we are pleased to offer our foundation design services, where we are able to take into account the many different design drivers impacting on the foundation design, and the subsequent cost of the foundations. 4.5.2
Our expertise in this field is based on 30 years of experience in the hostile North Sea, where we have carried out 39 jacket Detailed Designs from 1981 to 2010 and has a track record that covers the design of at least 75% of all jackets installed in the Danish part of the North Sea. Ramboll has its primary jacket experience from the Danish part of the North Sea, but has over the years also carried out a number of projects for clients in Norway, Qatar, Abu Dhabi, UK and Germany. Besides structures for offshore wind turbines and oil and gas platforms, Ramboll has also completed several detailed designs of transformer platforms. The services have included general layout, design of both foundation structure and top sides, as well as M&E. In addition, Ramboll has conducted several FEED and conceptual studies for different projects, mainly for the UK market.
Visualization of the transformer platform at the Anholt Offshore Wind Farm designed by Ramboll
Burbo Bank Extension (UK)
Westernmost Rough (UK)
Anholt Wind farm (DK)
MT HĂ¸jgĂĽrd/ E.On
Robin Rigg (UK)
Sheringham Shoal (UK)
Belwind I (165 MW)
London Array (630 MW) (UK)
OSS Bard I (DE)
OSS Alpha Ventus (DE)
Design of Electrical Infrastructure
We design the electrical infrastructure within the wind farm, including collection system, transformers and export cable, up to and including conceptual design level, where the results can be used for budgeting of the infrastructure, and as input to the environmental impact assessment. In case of performance of detailed designs we contract sub-consultants and still acts as one-point contact towards the client. Based on our large experience with design and laying of offshore pipelines and cables we perform design and consultancy concerning installation and protection of cables, and are also capable of performing supervision and inspection of these project elements. 4.5.4
Design for Decommissioning
The permits granted by the authorities contain, for most projects, a requirement for decommissioning of the entire project upon the end of the service life. The cost of decommissioning of a project is in most cases equal to, at least, the installation costs, so this
requires careful consideration in the design phase in order to minimize the costs. From our close cooperation with fabricators and installation contractors, we have good experience in designing the structures for both construction and for decommissioning, and have a good knowledge of impacts from the choice of various materials. 4.6
Design Risk Assessments Considering the harsh environment the wind turbines are installed and located in, where weather, sea state and access conditions is often a challenge a safe working environment is important for the staff. Some countries have their own set of rules for Health & Safety, but the basic rules are, in most cases, all based on the rules from the oil and gas industry, amongst others the UK CDM Regulations. From our long experience with design of both oil and gas structures and offshore wind structures awe have developed our own best practice, and included this in our in-house tool for performance of design risks, Soter. We further perform the design risk assessments using our full 3D models of the access facilities, platforms and other places accessed by people.
Project Enquiry and Contracting Based on our many different experiences in offshore wind projects we have drafted full enquiry documents and performed pre-qualification of tenderers and tender evaluations. The tenders have concerned anything from geophysical – and geotechnical investigations, to turbine supply contracts and full turnkey contracts for complete offshore wind farms. We are capable of handling both the general conditions of contract as well as the special conditions and technical requirements.
Fabrication Supervision We perform supervision of fabrication of elements for the projects. The supervision can be constituted of review of method statements for fabrication, review of quality control plans and standards, check and monitoring of fabrication and quality audits of the manufacturers. Our supervision is not a substitute for any certifying agencies monitoring of the fabrication, but can assist the client in the everyday management of the project.
Construction Management and Supervision We are capable of contributing with engineering and design services to all phases of the construction work:
Design of sea fastening and lifting arrangements Inspection of structural elements upon transportation Supervision and monitoring of installation of structures and cables Design changes during installation works Elaboration of as-built documentation
Contact: Søren Juel Petersen Director Business Development firstname.lastname@example.org +45 5161 8760
SUPPLEMENT 1 SELECTED PROJECT REFERENCES
Anholt Wind Farm (offshore) Paludan's Flak (offshore) Horns Rev 1 (offshore) Nysted (Rødsand) (offshore) Omø (offshore) Middelgrunden (offshore) Vindeby (offshore) Noise Measurements (Offshore) Horns Rev B (offshore) Offshore Foundation w. Suction Buckets Harbour of Bønnerup(onshore) Utgrunden (offshore) Utgrunden II (offshore) Kårehamn Lillgrunden Klasården (offshore) Seven Sites (offshore) Eleven Sites (offshore) EIA for Four Wind Farms Harbaksfjellet (onshore) Valsneset/Bessakerfj (onshore) HyWind (full-scale floating wind turbine) Arklow Bank (offshore) Q8 (offshore) North Sea (offshore) Katwijk Offshore (offshore) Den Helder (offshore) Long Island (offshore) Cape Cod (offshore) Lake Erie (offshore) Wind turbines on existing oil/gas jackets Delaware (offshore) Cape Wind (offshore)
Denmark Denmark Denmark Denmark Denmark Denmark Denmark Denmark Denmark Denmark Denmark Sweden Sweden Sweden Sweden Sweden Sweden Sweden Sweden Norway Norway Norway Ireland Holland Holland Holland Holland USA USA USA USA USA USA
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Sheringham Shoal (offshore) Rhyl Flats (offshore) Kentish Flats (offshore) Robin Rigg/ Solway Firth (offshore) Barrow (offshore) Gunfleets Sands (offshore) Offshore Wind Farm (offshore) Greater Gabbard (offshore) Lynn & Inner Dowsing (offshore) Burbo Bank (offshore) Scarweather Sands (offshore) Walney (offshore) Gwynt y M么r (offshore) Thanet (offshore) London Array (offshore) Lincs (offshore) Teeside (offshore) Dogger Bank (offshore) UK Round 3 (offshore) Humber Gateway (offshore) East Anglia (offshore) Westermost Rough (offshore) Fife (offshore) Wind Farm (offshore) La Banc (offshore) St. Brieuc (offshore) UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK Scotland France France France
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Germany Germany Germany Germany Germany Germany Germany Germany Germany Germany Netherlands Belgium Belgium Belgium Spain Spain Russia Italy Italy Brazil India India Japan Canada S. Africa S. Korea Iran South Korea
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De sc ri p t io n / e am tN je c Pr o
Sky 2000 (offshore) Butendiek (offshore) Meerwind (offshore) Amrumbank West Sandbank 24 Nordergrunde (offshore) Nordzee Ost (offshore) Krieger's Flak (offshore) Gode Wind (offshore) Baltic 2 (offshore) Luchterduinen (Q10) Thornton Bank (offshore) Gemini (offshore) Bligh Bank/Belwind 1 (offshore) Confidential (offshore) Belwind 2 (offshore) Kaliningrad (offshore) Castelfranco (onshore) Sardinia (onshore) Ceara Wind Project (onshore) Gujarat (onshore) Wind farm Test Project(onshore) Hokkaido(onshore) Naikun (offshore) Darling (onshore) Wido (offshore) Manjil(onshore) Samsung Jacket Foundation Design