Hydropower and Dams
Capability Statement Contents
Capability Statement: Hydropower and Dams
For further information please contact: Global
. Jacques du Plessis – Knowledge Manager: Hydropower and Dams . T: +27 (0) 36 342 3159 . M: +27 (0) 83 656 0088 . E: [email protected]
Indonesia
. Hille Kemp or Yuliant Syukur . T: +62 (0) 21 750 4605 . M: +62 811 9624 192 . E: [email protected] . E: [email protected]
Philippines
. Rudolf Muijtjens – Project Manager . T: +63 2 755 8466/67 . M: +63 915 7712200 . M: +31 6 29376569 . E: [email protected]
Netherlands/Belgium
. Leon Pulles – Investment Consultant / Investment Services . M: +31 6 4636 3481 . E: [email protected] . ir. Tom Van Den Noortgaete - Project Manager / Consultant Sustainable Energy . M: +32 494 84 72 14 . E [email protected]
Poland
. Ryszard Lewandowski – Technical Director Poland . T: +48 (0) 22 531 3403 . M: +48 (0) 604 967 855 . E: [email protected]
South Africa
. Jan Brink . T: +27 (0) 44 802 0600 . M: +27 (0) 84 723 1141 . E: [email protected]
Copyright © June 2016 HaskoningDHV Nederland BV Project details throughout this document may have been utilised the services of companies previously acquired by Royal HaskoningDHV.
Hydropower & Dams © Royal HaskoningDHV 1 Contents
1 Contents 1 Introduction ...... 3 1.1 Introduction to Hydropower ...... 5 1.2 Hydropower Diversity ...... 5 1.3 Other Forms of Energy from Water ...... 6 1.4 Added value by Royal HaskoningDHV ...... 6 1.5 Detail on Expertise ...... 6 1.5.1 Project Finance and Origination ...... 6 1.5.2 Consultancy Services ...... 7 1.5.3 Engineering ...... 8 1.5.4 Health, Safety and Environment...... 8 1.5.5 Specific skills ...... 9 2 Project Experience ...... 10 3 Royal HaskoningDHV ...... 34 3.1 Company Profile ...... 35 3.2 Our Sectors ...... 35 3.3 About Royal HaskoningDHV ...... 37
Hydropower & Dams © Royal HaskoningDHV 2
1 Introduction
Introduction
Food, Water and Energy under pressure
More and more people are becoming aware that the growing scarcity of water, food and energy is set to be the biggest crisis of the decades to come. We need to ensure food, water and energy security, but there are hazards on all sides. In the decades to 2050 the world population is set to mushroom to nine billion. Taking into account global urbanisation and rising standards of living in large parts of the world this will put an enormous strain on existing resources. Water consumption is set to rise by at least 30 percent, while the demand for food and energy will jump some 50 percent. Faced with these challenges, a ‘business as usual’ scenario is hopelessly inadequate. In order to survive, a drastic, worldwide switch to sustainable production and consumption is inevitable. The challenge we face is to maximise efficiency and sustainability. Why Water and Energy projects make sense
If we want to reduce our dependence on fossil fuels we cannot afford to rule out any single source of renewable energy. Using water as an energy resource too, is desperately needed despite its inherent difficulties – and there is a lot of energy in water. The trick is to utilise it without making scarce water even scarcer and to harmonise plural use of water resources. With its roots in a country where plural use of water resources led to it being used as an ‘organising’ principle, Royal HaskoningDHV not only has 130 years of world-class technical expertise but also the institutional and financial expertise to facilitate Water Infrastructure projects in general and Water and Energy projects in particular. Such skills have proven of tremendous added value for creating the optimal conditions for sustainable and commercially successful Water and Energy projects around the world that help address the global water, energy and food crises. .
Hydropower & Dams © Royal HaskoningDHV 4 Introduction
. High capacity factor compared with 10% for solar and 30% for wind; 1.1 Introduction to Hydropower . High level of predictability, varying with annual The continuing economical and demographical rainfall patterns or daily tidal movement; development of the world has lead to an increasing . Slow rate of change; and world energy demand. Today, more than 80% of the . It is a proven technology with a history of over global energy needs are met through the use of fossil a century. fuels such as coal, oil and gas. There is a strong According to the UNIDO classification, hydropower can worldwide political, economical and environmental drive be subdivided into the following ranges: to develop alternative energy sources such as wind power, hydropower and solar power. Classification Power Capacity (kW) The depleting access to easily accessible oil and gas Micro < 100 fields and increasing costs for new oil and gas Mini 100 – 2,000 exploration adds to the motivation to shift to renewable Small 2,000 – 10,000 energy. Big > 10,000
1.2 Hydropower Diversity Runoff-River HPP Finding their way down from their wells, rivers continue to grow and gain more and more energy. Nowadays, this energy can efficiently be captured and converted into electricity to power households, communities and industries. The harnessing of this electrical power from In this context, hydropower accounts for more than 50% a river flow can be established in two different ways; of the total renewable energy, with the potential to grow using the head or the speed of the water flow. It may considerably. The biggest advantages of hydropower involve a short-term storage but it is generally driven by are that the operational costs are low compared to the natural river flow conditions. fossil fuel technologies and, hydropower is more reliable and predictable when compared with wind and Reservoir HPP solar power. These advantages also apply to other technologies available to produce energy from water, such as tidal energy, wave energy or blue energy. Hydropower is generally defined as ‘power derived from the energy of falling water’ and uses a hydropower plant (HPP) to produce electricity from this power. These can be classified as follows:
. Runoff-river (RoR) HPP; . Reservoir (or storage) HPP; and . Pumped Storage Plants. Hydropower is one of the most cost-effective and reliable technologies to be considered for providing renewable energy generation. It has the following Water is stored in a reservoir, mostly created artificially advantages: by building a dam, to produce electricity in a HPP. Most of these reservoirs serve multi purposes, such as . High efficiency compared with other renewable flood reduction or water supply. These reservoirs energy sources;
Hydropower & Dams © Royal HaskoningDHV 5 Introduction
provide flexibility in providing electricity, not depending on daily or seasonal fluctuations of river flow. Pumped Storage Plants Electricity can be stored in water using height differences. In mountainous regions, this seems a very natural condition of which to take advantage. Using electricity, water is pumped to higher reservoirs to store the energy it creates. In a modified (reversed) form, the system can be used to generate electricity (by means of turbines). Often the situation is that a surplus of water is stored at night-time which can be used to produce energy during the day. In the Netherlands an option is 1.4 Added value by Royal HaskoningDHV considered to develop a pumped storage scheme We are experienced Water and Energy experts. where the lower basin is situated more than a thousand Royal HaskoningDHV has the combined expertise meters underground. required for all stages of the project lifecycle under a 1.3 Other Forms of Energy from Water single roof. Whether you seek greenfield development of hydropower, need support in your transaction, Tidal Energy support in design, tendering and supervision of a The tide occurs due to the motions of sun and moon construction of a new plant or whether you need around the earth. This large movement of water in the support in Asset Management, we can assist. sea – tidal energy – can be exploited for potential 1.5 Detail on Expertise energy (tidal range) but kinetic energy (tidal flow) can also be harnessed from the tidal stream. To maintain our leading position and to continue to offer the best possible services and sustainable solutions to Wave Energy our clients, successful innovation, research and Wave energy occurs due to movements of water near development are vital constituents of our activities at the surface of the sea. Waves are formed by winds Royal HaskoningDHV. Our experts are active in blowing over the water surface, which make the water identifying new trends, emerging challenges and particles adopt circular motions. This motion carries technical advancements which we develop into kinetic energy, the amount of which is determined by promising opportunities. By using our advanced skills, the speed and duration of the wind, the length of sea it network and business model we are able to convert blows over, the water depth, sea bed conditions as well opportunities into innovative implementation which offer as interactions with the tides. The energy can be tangible transformational value within society. harnessed by mechanical systems using the potential 1.5.1 Project Finance and Origination and/or the kinetic energy. We understand the commercial needs of our clients and Blue Energy are at home in the fast-paced world of project finance. Blue energy is the production of electricity by means of At the same time we are able to liaise closely with the osmotic power or the power of the salinity gradient technical experts to arrive at an Investment Grade available from the difference in the salt concentration Business Case that delivers the expected functionality between seawater and river water. Osmotic power can against mitigated (acceptable) risk and affordable be gained at locations where there is a border between (optimised) cost and revenue. Our solid project fresh and salt water. This osmotic power can be management and stakeholder engagement capability harnessed by two practical methods: reverse comes in handy due to the dynamic nature of electrodialysis (RED) and pressure-retarded osmosis. establishing a business case for water and energy projects.
Hydropower & Dams © Royal HaskoningDHV 6 Introduction
Our global network of (private and institutional) team, creating synergy with the developer’s team and investors and financiers, financial institutions, credit efficient total project delivery. agencies, governments, contractors and clients allows us to always provide you with the right local context. Our global and local network, as well as our presence Royal HaskoningDHV’s consultants have an in-depth in the market makes us uniquely capable of pinpointing and up-to-date knowledge and understanding of the greenfield investment opportunities at an early stage environmental and spatial issues, legislation, guidance and to develop them into business cases worthy of and regulations, management systems and investment. And of course, all within IFC’s communication involved in the assessment and Environmental and Social Performance Standards consenting of renewable energy developments. We which are a global benchmark for sustainability in have the capacity to formulate policy plans, conduct Project Financing. investigations, manage processes, obtain permits / consents and develop and assist in implementing 1.5.2 Consultancy Services solutions. Central to our successful work is good liaison Royal HaskoningDHV offers market-leading knowledge with competent authorities, regulators and and experience of the issues associated with renewable stakeholders. energy developments. We have undertaken numerous Site Selection studies (including feasibility and scoping studies, Environmental Impact Assessment (EIA), permitting, We are able to carry out top-level assessment of the business case development, Due Diligence studies, feasibility of a site or area for the development of monitoring programs, stake holder analysis, Health and renewable energy projects. Parameters and Safety programs) for a variety of projects including considerations covered include; technical, financial and wave, current and tidal installations and hydropower environmental constraints and risks, providing plants next to onshore and offshore wind farms, biofuel foundation upon which financial and development facilities and grid connections. decisions can be made. Life cycle cost estimates can also be provided for comprehensive budgeting requirements. Geology and Geotechnical Our experience enables us to understand design and procurement of ground investigations for marine and terrestrial structures. Our approach to ground investigation is to optimise the scope of the field works and hence cost. Along with our engineers, we can predict the consequences of the execution, durability and maintenance of structures, thus minimising financial risk. Financial Risk Assessment Economic and financial evaluation studies, financial and economic modelling, investment and funding strategies, project appraisals, economic studies and financial Royal HaskoningDHV can assist in all components of assessments. Combining our economists with our the project cycle, from site selection and feasibility engineers we are able to come to an accurate financial through to decommissioning. We can provide risk assessment for the project. consultancy related services, such as consultation and stakeholder engagement, and technological know-how regarding, for example geotechnical evaluation and design specifications. State-of-the-art technical expertise is delivered through a project management
Hydropower & Dams © Royal HaskoningDHV 7 Introduction
Consultation and Stakeholder Engagement Grid Connection Studies We are able to talk the same language as our Our engineers are experienced across a wide range of counterparts and tackling the same issues and conflicts applications including ports and docks, automobile and to the agreement of all. We can devise communication other major manufacturing plants. plans and public meetings, as well as exhibitions and 1.5.4 Health, Safety and Environment. newsletters to ensure the public are fully informed and their concerns are taken on board and resolved Environmental Impact Studies (EIA) satisfactorily. Consulting during the initial project design stages Consents and Licensing includes communicating with regulatory authorities, stakeholders, and the community; assisting with We are able to manage the consents and licenses environmental approvals and consents; and developing specified for the development of marine and terrestrial and implementing monitoring and environmental renewable energy projects. management plans and management systems for the construction, operation, and decommissioning stages of the project. Fish Mortality Studies and Solutions Design and realisation of different types of fish ladder, fish guidance systems and bypasses. Environmental Monitoring and Annual Reporting for environmental conditions associated with consents and agreements. Health and Safety A standard Royal HaskoningDHV approach to a project is to draft a detailed risk assessment report as part of a complete risk management strategy. These include a Hazard and Operability Study (HAZOP), a Quantitative and Environmental Risk analysis, a Process Safety 1.5.3 Engineering Assessment and a Safety Implementation Report. Hydraulic Modelling With hydraulic models energy production of a hydropower plant can be predicted. Also the models can assist in identifying changes in water management and effects on morphology and environment. Dam Design Starting in the late 1800’s, Royal HaskoningDHV was the first consultant in the Netherlands to be involved in the design of dykes and dams. Throughout the 20th century and beyond we have moved further afield, providing advice to the public- as well as private sectors on various dams, barrages, barriers and weirs.
Foundation Design and Loadings Analysis
We understand the loadings imparted to marine structures from wind and waves as well as soil loadings and vessel impacts. We are able to design foundations for maritime, river, weir and dam structures of all types.
Hydropower & Dams © Royal HaskoningDHV 8 Introduction
1.5.5 Specific skills Royal HaskoningDHV has gained extensive experience in our own hydraulic laboratory in Wloclawek (Poland). Fish Migration In this laboratory, designs of more than ten plants have Fish migration is an important issue in the development been extensively tested. Test results demonstrate that, of hydropower projects. The installation of a starting from a plant design based on conventional hydropower plant should not have a negative impact on wisdom and state-of-the art expertise, physical models the fish. can result in efficiency improvements in plant capacities of up to 10-15%.
In each design, our experts try to find the optimal solution regarding fish migration, giving preference to fish friendly equipment and / or optimal passage systems combined with fences at the location of the intakes. In general several options regarding fish migration can be applied, going from fish bypasses to more technical solutions such as a siphon trap or a fish elevator. Natural bypasses are the optimal solutions from an environmental point of view, but the safe passage needs a continuous flow which cannot be applied for the generation of green electricity.
Optimisation of hydraulic design
A crucial part in the design of a hydropower plant is its hydraulic design and the configuration of its inlets and outlets. These configurations determine to a large extent how the potential energy stored in water is best utilised for the production of electric energy. The highest rate of effective utilisation is obtained when under all circumstances the water flow is optimally distributed over all turbines of a plant. This is done in proportion to the installed turbine capacities, while at the same time excluding any obstructions to the flow in the outlet structures. Traditionally, the hydraulic design of a hydropower plant is tested and optimised in a physical model applying various physical configurations in the process of optimisation. All hydraulic structures: inlets, outlets and the power house are built to scale in a hydraulic laboratory. In a series of tests, the design is gradually optimised. Testing of a design in a physical model is an accurate way to determine its potential efficiency. Furthermore, it provides an opportunity to improve the design by streamlining the inlet and outlet structures, resulting in an optimum distribution of flow over all turbines.
Hydropower & Dams © Royal HaskoningDHV 9
2 Project Experience Project Experience: Hydropower
Detailed Project Development Assessment and Improvement: Lingsar Mini-Hydropower Plant Review FS for the Selokromo Hydrowpower Plant
Client: PT. Tirta Daya Client: PT Energi Hijau Rinjani Lingsar Kencana / Puri Hydro Country: Lombok, Country: Wonosobo, Indonesia Central Java Indonesia Year: 2015-2016 Year: 2015 For the Selokromo (2x4 MW) Mini Hydropower Plants located in Wonosobo, Royal HaskoningDHV conducted The proposed mini-hydropower project PLTM Lingsar the following: with a rated capacity of 2x1.4 MW is located in Batu Mekar village, Lingsar, District of Lombok Barat, . Review of Feasibility Study Province Nusa Tenggara Barat. The developer is PT. . Optimization of options for alignment Tirta Daya Rinjani Lingsar (TDRL). alternatives based on several aspects. TDRL, with assistance of RHDHV, applied for a TAPP The scope of services was as follows - the review of the Grant from the MCA-Indonesia for the development of FS consisted of two stages: the project. TAPP Grant is being provided on a need- . Technical review and gap analysis. After the basis to strengthen project preparation to meet MCA- technical review, the business case was Indonesia requirements, address any gaps identified by evaluated including a new financial analysis MCA-Indonesia as being required to be rectified to model base on revised hydrological study meet Green Prosperity (GP) requirements and improve results and the FS was turned into a “Go/No the quality of the required Project’s Design and Go” decision. Implementation. . Recommending the best alternative alignment The overall scope of work is shown below: option and follow up for the next stage. Phase 1: Initial Review of Project Documentation The hydrology study review was to validate the Merawu River discharge data used by the hydrological data The primary objective of the first phase is to review analysis and modelling, so that the data could be PLTM Lingsar’s Feasibility Study and identify the gaps recommended as the best value for producing Flow of the existing PLTM Lingsar. The initial project review Duration Curves (FDC) and related design discharge was based on a desk review of all existing project (Q). preparation documents. A field visit was included. Recommendation for determining the optimal location Phase 2: Surveys and Analysis considering the existing weir basin and the impact of RHDHV conducted the required site and geotechnical the back water affecting the water level in the tailrace investigations, asset condition surveys, stakeholder and power house. surveys and corresponding analysis. The above stage was referred to the client for a “Go / Phase 3: Detailed Project Improvement No Go” decision and to agree on the best alignment and general layout. Referring to the identified gaps and site surveys and analysis, RHDHV proposed improvements to the project design, engineering and other areas which will be further developed for construction.
Hydropower & Dams © Royal HaskoningDHV 11 Project Experience: Hydropower
Davao River 170 MW Hydropower and Pumped In the tunnel between the Chico River and Tanudan Storage Client: San Lorenzo Ruiz Builders and Reservoir, a 35 MW extra hydropower unit can be Developers installed. Country: The Philippines The upper reservoir is located in River Tanudan which Year: 2014 will get a 67 m high dam. This river has a large natural inflow which reduces the pumping activity a lot during 6 months of the year. Royal HaskoningDHV conducted the Pre-Feasibility The PSS is designed to pump 10 hours per day and Study for this project with an estimated investment of generate 12 hours per day throughout the year. In the US$ 456 million. wet season no pumping is needed and the generation The Davao project is a 170 MW Pumped Storage can last for 24 hours per day. The hydraulic head 3 Scheme (PSS) on the Davao River, in Mindanao. The between reservoirs is 113 m, the flow rate is 260 m /s PSS consists of an upper reservoir of 7 million m3, a and the power rating is 250 MW. The annual gross lower reservoir with a storage capacity of 7 million m3 generation is estimated at 1,491 GWh. and a 5 m diameter surface penstock in between. The project is developed by San Lorenzo Ruiz Builders The upper reservoir will receive a natural inflow from and Developers Inc. the Davao River. The inflow is partly by gravity and 500 MW Wawa Pumped Storage Project partly by support of a 38 MW pumping station. This reduces the PSS pumping activity significantly Client: San Lorenzo Ruiz throughout the year. Builders and Developers The PSS is designed to pump 10 hours per day and Country: The Philippines generate 12 hours per day throughout the year. In the Year: 2014 wet season no pumping is needed and the generation can last for 24 hours per day. The hydraulic head Royal HaskoningDHV conducted the Pre-Feasibility between reservoirs is 116 m, the flow rate of the Study for this project with an estimated investment of turbines is 175 m3/s and the power rating is 170 MW. US$ 591 million. The project is developed by San Lorenzo Ruiz Builders The Wawa project is a 500 MW Pumped Storage and Developers Inc. Scheme (PSS) on the Wawa River, just outside Metro Chico River Hydropower and Pumped Storage Manila in the Philippines. The PSS consists of an 3 Project, 250 MW upper reservoir of 6 million m , a lower reservoir with a storage capacity of 6 million m3 and a penstock in Client: San Lorenzo Ruiz between. The PSS is designed to pump 10 hours per Builders and Developers day and generate 12 hours per day throughout the Country: The Philippines year. The hydraulic head between reservoirs is 450 m, the flow rate is 148 m3/s and the power rating is 500 Year: 2014 MW. The annual gross generation is estimated at 2,015 GWh. Royal HaskoningDHV conducted the Pre-Feasibility The project is developed by San Lorenzo Ruiz Builders Study for this project with an estimated investment of and Developers Inc. As an option, an 800 MW scheme US$ 578 million. can be developed with a power output of 2,658 KWh per annum. The investment would then amount to The Chico project is a 250 MW Pumped Storage US$ 882 million. Scheme (PSS) on the Chico River, in the Kalinga Province in Northern Luzon. The PSS consists of an upper reservoir of 10 million m³, a lower reservoir with a storage capacity of 20 million m3 and a tunnel penstock in between.
Hydropower & Dams © Royal HaskoningDHV 12 Project Experience: Hydropower
300 MW Boluasao Pumped Storage Project . A technical review and gap analysis. After the technical review, the business case was Client: San Lorenzo evaluated including new financial analysis Ruiz Builders and Developers model based on revised hydrological study results and turned the feasibility study into Country: The “Go/No Go” decision. Philippines . Revised hydrological study (second stage) Year: 2014 was the correction of the comments in the first
stage, updating newer rainfall data and new Royal HaskoningDHV conducted the Pre-Feasibility modelling analysis. Study for this project with an estimated investment of The hydrological study consisted of hydrological data US$ 418 million. analysis and modelling, water balance in catchment Bolusao Hydropower and PSS project is located on the area where one of those is the existing Musi Island of Samar, in the Visayas, the Philippines. The hydropower plant using the discharge of Musi River and project consists of 2 main components: producing Flow Duration Curves (FDC) with related design discharges. . A Run-of-River hydropower plant with a recommended power rating of 5.5 MW Construction Management: Sei Wampu . A Pumped Storage Scheme with a capacity of Hydropower Plant 300 MW Client: Confidential The PSS project is a 300 MW scheme, based on Country: Sumatera, 12 hours generation per day. The project consists of an Indonesia upper reservoir of 5 million m3, a lower reservoir of Year: 2015 to 2017 5 million m3, a surface penstock with 5500 mm diameter and a power house containing the 2 pump turbines. The hydraulic head between the reservoirs is 295 m and the flow rate is 140 m3/s during pumping. The annual gross generation is 1209 GWh. The Sei Wampu hydropower plant was under construction (~55% as per November 2015) and was Review of Feasibility Study and Revised planned for COD in 2016 but due to the collapse of the Hydrological Study for the Musi Kotaagung cofferdam the COD date was delayed. On Hydropower Plant 2 December 2015, the cofferdam collapsed and Client: PT. Bio Energi consequently the construction site was flooded. Wijaya (BEW) Royal HaskoningDHV conducted the cofferdam Country: Bengkulu, collapse investigation and submitted a report which Indonesia included recommendations on the way forward for constructing the hydropower plant. Year: 2016 The priority of the Client was to take the necessary steps / activities in order to continue and finalize The project consists of a Run-of-River hydropower plant construction of the hydropower plant in 2017. Royal with river diverging weir, sediment trap, ±9.5 km HaskoningDHV will further manage the construction on waterway, forebay, ±800m penstock, powerhouse with behalf of the Client as Employer’s Representative until several turbines, transformer yards, ±30 km the hydropower plant is commissioned and fully transmission line to the 150 kV grid and access roads. operational. The scope of services was as follows – The review of the feasibility study consisted of 2 stages:
Hydropower & Dams © Royal HaskoningDHV 13 Project Experience: Hydropower
Structural Repair for the Cibalapulang 1 Mini– The scope of services was as follows: Hydropower Plant . A technical review and gap analysis. After the Client: PT Bio technical review, the business case was Jatropha Indonesia evaluated. Country: Cianjur- . Revision (second stage) was the correction of West Java, Indonesia the comments collected in the first stage and to turn the Feasibility Study into a bankable Year: 2014 feasibility study. The Cibalapulang (3x3 MW) Mini Hydropower Plant is The hydrological study consisted of hydrological data located in Cianjur Regency, West Java Province. analysis and modelling, on-site discharge Damages to the weir structure, headpond and penstock measurements and producing Flow Duration Curves anchor block were witnessed when they were tested for (FDC) with related design discharge. 3 hours operation by running the turbine at maximum Development of four Mini-Hydropower Plants water level in the head pond. Royal HaskoningDHV along the Merawu River in Indonesia was requested to review the existing condition of the damaged structures and give recommendations for Client: Tirasa short term repairing as the Client would like to achieve Country: Indonesia the commisoning target. Year: 2013 to date The scope of services was as follows:
. Site visit and record all damaged structures . Brief analysis of the geology / geotechnical aspects The project consisted of four cascaded Run-of-River . Prepare recommendation for the repair hydropower plants on the Merawu river: Karekan (6 MW), Watupayung (2.4 MW), Pandansari (6 MW) Due to limited soil and geological data at the area which and Tempuran (1.2 MW). Infrastructure includes is needed to review the rock stability and soil and due diverging weirs, sediment trapsand penstocks. The to limited time to do the repair, Royal HaskoningDHV powerhouses will each contain several turbines. A recommended only for short term repair (semi- transmission line will connect to the 20 kV grid, and permanent) as requested by the Client. Long term access roads will also be constructed. The impact on repair will be conducted at a later stage. the local environment will be small and manageable. Review of Feasibility and Hydrological Study for Royal HaskoningDHV was responsible for the full scope the Bingai Mini-Hydropower Plant of service of the hydropower project life-cycle, Client: TIRASA including: Country: North . Review local feasibility study – technical Sumatera, Indonesia review and gap analysis Year: 2014 . Evaluation of business case . Hydrological study – data analysis and modelling, on-site discharge measurements, production of flow duration curves and design The project is a Run-of-River hydropower plant with a discharge capacity of 7 MW. The project consists of a river . Preparing detailed design and tender diverging weir, sediment trap, waterway, forebay, documents for the four plants penstock, powerhouse with several turbines, . Tender assistance transformer yards, transmission line to the 20 kV grid . Construction management and access roads. The electricity will be sold under a feed-in tariff agreement. The investment is about $14 million.
Hydropower & Dams © Royal HaskoningDHV 14 Project Experience: Hydropower
The electricity will be sold to the electricity company Royal HaskoningDHV is the process manager for the (PLN) under a feed-in tariff agreement of about 4 $ct for development and implementation of the various hydro a period of 25 years. The investment is about $30 projects. Royal HaskoningDHV will be the asset million with a return on investment of about 6 years. manager of the various assets world-wide and be responsible for operation and maintenance and GIS Study – Hydropower Mapping and guarantee a certain output. Assessment in a regency in North Sumatera Royal HaskoningDHV will select the locations for the Client: Private hydropower development and also complete feasibility Developer studies, concept engineering, procurement, Country: Indonesia construction supervision and assess management. Year: 2013 Western Uganda Mini-hydropower and Rural Electrification Project
Client: Ministry of Energy The objective of the project is to conduct a desk study and Mineral Development for the selection of potential sites which could be Country: Uganda suitable for hydropower development, in a Regency / Kabupaten in North Sumatra. The desk study is based Year: 2011 – 2015 on amongst others a multi-layer GIS model. The selected sites should accommodate hydropower development between 1 and 50 MW. After this stage The project involved a pre investment study, full pre-feasibility studies will follow for the assessment of feasibility study and concept engineering for the site the potential hydropower plant. selection for 10 mini hydropower units with a total capacity of 12 MW. It provided rural electrification for . GIS modelling and mapping based on digital 72,000 housing connections in South-West Uganda. elevation model (DEM), topography, spatial The project includes 10 dams, 10 mini-hydropower plans, grid, infrastructure data etc. units, high voltage transmission lines, a distribution . Hydrological and Water Resources Analysis network (mini grids) and house connections. The pre- . Locations of potential hydropower plants feasibility study was made in order to arrange financing evaluation and assessment. for the project, an estimated €32 million.
Royal HaskoningDHV initiated the project and arranged Hydroring Global Support the funding, which is 50% grant funding (ORIO). Client: Hydroring Capital, IPP Besao Mini Hydropower Project Country: Rwanda, Client: Private Philippines, global Development, IPP Year: 2012 Country: Philippines Year: 2012
In 2012 Royal HaskoningDHV joined with BREDCO to
develop the 15 MW (4 cascades plants) small Hydroring Capital is an Independent Power Producer hydropower project in North Luzon, the Philippines. (IPP) and turbine manufacturer with an innovative turbine (40, 80 kW) concept. This turbine concept is Royal HaskoningDHV will join the Special Purpose used to roll out an IPP concept in 20 countries, starting Vehicle who will operate the assets as an Independent with Rwanda and Philippines. Hydroring does this in Power Producer (IPP) and sell the electricity to association with UNESCO-IHE, SIEMENS and TransCo under a feed-in tariff. Royal HaskoningDHV.
Hydropower & Dams © Royal HaskoningDHV 15 Project Experience: Hydropower
The role of Royal HaskoningDHV is the process Wloclawek Barrage and Related Projects management of the project, location studies, Client: Regional Water environmental, technical, hydrological studies, quality Management Authorities assurance and financing of the project by associated Warsaw equity and debt providers. Country: Poland Evaluation of PPP Options Year: 1970 to date Client: Bureau of Public Enterprises (BPE)
Country: Nigeria Wloclawek Barrage was designed by Hydroprojekt Year: 2007 – 2008 (now Royal HaskoningDHV), and constructed back in the 1970s and has been renovated and adjusted by Royal HaskoningDHV ever since. The most important
structures of the barrage are a 20m high earth dam and A study to identify and further elaborate promising and 670 m long, 10-span reinforced-concrete weir 200 m feasible options for public private partnerships (PPP) wide and flow capacity 11 150 m³/s, vertical lift gates, a between Nigeria’s River Basin Development Authorities 162 MW hydropower plant, navigation locks and a fish- (RBDAs) and the private sector (international and pass. domestic). PPP options are investigated with regard to As a result, a reservoir was created with an area of the irrigation and hydropower sectors and other 75km2 and capacity of 370 million m3. To drain water downstream RBDA operations. Services provided: from the areas outside the embankments, eight pumping stations were built as well as the network of . recommendations for policy and legal reforms to ascertain feasibility for PPP outcomes drainage ditches. . recommendations with regard to the core Royal HaskoningDHV has designed many projects tasks and responsibilities for RBDAs related to the Barrage. Among others, Conceptual . recommendations and further elaborations for Design of the Vistula River Valley Development and the most promising PPP options for Nigeria’s Vistula River Training (1997-2000), Multi-variant Pre- RBDAs and the international and domestic Feasibility Study of the Lower Vistula Development private sector in the irrigation and dams sector (1998-1999), Conceptual Design with Multi-variant . facilitation to create support within the Federal Feasibility Study for the Proposed Investment: Ministry of Agriculture and Water Resources ”Construction of the Barrage in Nieszawa-Ciechocinek (FMAWR) and their subordinate RBDAs for (supporting barrage)” (2002-2004), Preparatory PPPs in fields of activities beyond their core Documentation for the Task: ”Ecological Safety of the areas of operations, such as irrigation and Wloclawek Barrage” (2007-2008), Preliminary and hydropower Detailed Designs of the Reconstruction and . preparation of a PPP Options Report and a Rehabilitation of the Structures of the Wloclawek PPP Programme Outline and Programme Barrage (2009-2012), Technical Documentation for the Implementation Plan Task: ”Reconstruction of the Side Dam in New Duninow village” (left-bank dam of the Wloclawek Reservoir), (2010), Preliminary and Detailed Designs of the Reconstruction of the Side Dams of the Wloclawek Reservoir, as well as Macro-levelling of the Reservoir’s Bowl” (2009-2011), Feasibility Study for the Project ”Ecological Safety of the Wloclawek Barrage: Modernisation of the Barrage in Wloclawek and Improvement of the Wloclawek Reservoir Flood Protection” (2011).
Hydropower & Dams © Royal HaskoningDHV 16 Project Experience: Hydropower
1332 MW Ingula Pumped Storage Scheme Kabompo Gorge Hydroelectric Project Client: ESKOM Client: Copperbelt Energy Corporation Country: South Africa Year: 2005 – 2016 Country: Zambia Year: 2011 – 2012
The Ingula Pumped Storage Scheme is a 1332 MW The Amanzi Consultants JV, of which project being developed by Eskom to augment the Royal HaskoningDHV was a partner, were contracted National Grid in peak power usage periods. The for the feasibility study and preparation of the EPC tender documentation for the Kabompo Gorge Scheme is located within the little Drakensberg Hydroelectric Power project. mountain range of South Africa. The distance between the upper and lower reservoirs is in the order of 6 km A feasibility study was completed for four options for the and the elevation difference is approximately 470 m. underground waterways and caverns and range of The rated generation capacity of the scheme is capacities from 20 MW to 40 MW to determine the most nominally 1332 MW with an energy storage capacity of economical solution. Preparation of the EPC contract 21,000 MWh. The total capital cost of the project is for a hydropower scheme located on the Kabompo US$ 1.6 bn. River in Zambia. Royal HaskoningDHV was Royal HaskoningDHV was part of a joint venture responsible for the technical specifications for hydro- responsible for tender design, final design and mechanical and auxiliary equipment, electrical plant, construction supervision. Specific activities included HVAC, fire protection, building works and construction accommodation as well as the concrete and grouting structural and civil engineering infrastructure, road works for underground structures. engineering, dam engineering, hydrology, hydraulics of dams and hydro-power waterways and low voltage electrical aspects. Dokan and Derbandikhan Emergency Supervision and Health and Safety Coordination Hydropower Project of Alqueva Hydropower Plant Reinforcement Client: Ministry of Client: EDP Energias de Electricity/Kurdistan Portugal Regional Government (Project financed by IDA) Country: Portugal Country: Iraq Year: 2008 – 2012 Year: 2007 – 2008
The Dokan (5x80 MW) and Derbandikhan (3 x 83 MW) Royal HaskoningDHV won the contracts to develop hydroelectric power plants (DDEHP) have been supervision and health and safety coordination services operating for the last 17 and 28 years, respectively, with for the power reinforcement in Alqueva Dam. a progressively deteriorating level of efficiency. The DDEHP project has the overall objective of improving The Alqueva reservoir, on the right bank of the the performance of both power plants and of Guadiana River, is the largest in Portugal and Western guaranteeing an extension of their operational life by at Europe. least 20 years. The services to be carried out in order This project involved the construction of a new to achieve the above stated objective were subdivided hydraulic system and a new power plant, which is into two distinct phases: equipped with two reversible generators. The project installed an additional 260 MW of power in the plant.
Hydropower & Dams © Royal HaskoningDHV 17 Project Experience: Hydropower
Phase 1 – Emergency repairs, aimed at correcting in Dam Safety Assessment, Emergency Action Plan the shortest possible time the most critical aspects and Environmental Management Plan for which negatively affect the electric generation and Akosombo and Kpong Generation Stations transmission of both plants. They included the Client: Volta River installation of a new Electric High Voltage Sub Station Authority for interconnection with the National Grid. These include, new control rooms, the replacement of control, Country: Ghana speed governor and excitation systems and the Year: 2009 – 2011 installation of the dam safety monitoring system. Phase 2 – General rehabilitation, aimed at conducting in an organic manner all the interventions on the civil and electromechanical components of the dam and The Akosombo Dam is a hydroelectric dam in south- power plant, considered necessary for assuring an eastern Ghana in the Akosombo Gorge on the efficient and long lasting operation. Volta River. The dam provides electricity to Ghana and its neighbouring West African countries, including Togo Namakhvani 450 MW Cascade Hydropower and Benin. The dam is 660 meters wide and 114 m Project high. The Volta River Authority (VRA) requested Royal Client: Government HaskoningDHV to prepare a Dam Safety Assessment for this dam and the much smaller Kpong Dam as well Country: Georgia as an Emergency Preparedness Plan to minimise Year: 2007 – 2008 damage and fatalities in case of an emergency. Additional to these studies an Environmental Management Plan and Action Plan were prepared that
looked into the mitigation of environmental impacts A full feasibility study (FS) was done by caused by the dams and management of the Royal HaskoningDHV for the cascade hydropower environmental challenges while operating both dams. project consisting of three dams with a total capacity of Supervision of Candemil Hydroelectric Power 450 MW in Rioni River between two existing Plant hydropower schemes at Lajanuri and Gumati. Client: Hidroamarante – The FS included hydraulic computations and Hydraulic Sociedade Elétrica, S.A. model tests for the Namakhvani Dam. In the physical Country: Portugal laboratory of Royal HaskoningDHV the deep tower water intake device was simulated with a scale model, Year: 2010 – 2011 on which the conditions of the flow of water could be simulated. The FS also included structural model testing, dam break analysis, geotechnical testing and financial modelling. Royal HaskoningDHV was commissioned by the Hidroamarante – Sociedade Elétrica, S.A. to carry out the supervision works of Candemil Hydroelectric Power Plant. This project included: a concrete weir with a height of 6 m from the foundation; a tunnel of 640 m of extension; a chimney of balance; two turbines of 630 kW and 1270 kW.
Royal HaskoningDHV was responsible for construction
supervision, information management, planning and cost control and quality, safety and health coordination.
Hydropower & Dams © Royal HaskoningDHV 18 Project Experience: Hydropower
Malczyce Barrage in Oder River . Mohale Dam, to facilitate the abstraction and diversion of the waters of the Sequnyane Client: Government River, Country: Poland . A 31.5 km long conveyance tunnel for transferring water from Mohale Dam to Year: 2011 – 2015 supplement the storage in the reservoir of the Katse Dam, . A weir on the Matsoku River to divert additional water through a 6.6 km long tunnel Royal HaskoningDHV conducted the design and to the Katse reservoir. The Mohale Dam is detailed engineering for this barrage which consists of a one of the highest concrete faced rock fill 300 m wide weir and with 260 m long spillway, fish dams built in Africa. The dam is 145 m high passage, a navigation lock, 190 m long and 12 m wide. with a fill volume of 7.7 Million m3. At the full The hydropower plant has a capacity of 11.4 MW. The supply level of EL 2075, the dam will provide a average annual production will reach 49,800 MWh. storage volume of 947 Million m3. The project will include construction of a drainage Royal HaskoningDHV executed the feasibility and system, drainage canal and pumping station, as well as preliminary designs, preparation of tender and contract restoration of the Jeziorka River on the reach of 6 km documentation, monitoring of construction, contract and the Średzka Woda River on the reach of 5 km. In management, scheduling of activities. addition, detailed land reclamation on the area of 500 ha will be executed. Jozini Hydro Electric Project After damming the Oder River waters, the water table Client: Umhlosinga will be raised by 1.0 ÷ 4.0 m comparing to the current Development Agency level. Country: KwaZulu-Natal, South Africa Mohale Dam Lesotho Year: 2008 – 2009 Client: Lesotho Highlands
Development Authority Royal HaskoningDHV was appointed to carry out a study for the Jozini Hydro Electric Project. The project Country: aimed to generate electricity using water discharging Lesotho from the Jozini Dam. Should the feasibility of the Year: 1996 – scheme be proved the project will include the 2003 preparation of all tender documents, project management and supervision including an Mohale Dam was an important component of the organisational design review of the UDA. This project Lesotho Highlands Development Project (LHDP), which focuses strongly on community upliftment with the aim was a major project that had been developed to transfer that it provides a platform for further development of the water from Lesotho to the Vaal River, to the industrial / local community, with staged sequencing of the main urban heartland of South Africa whilst generating embankment facilitating river diversion through two hydroelectric power for Lesotho. diversion tunnels at minimum cost and risk. Phase 1A of the LHDP comprises the Katse Dam The tasks included execution of a Feasibility study, together with a 45 km long transfer tunnel and a 37 km economic analysis, hydraulic and water resource long delivery tunnel as well as the Muela hydro-electric analysis, environmental management plan, preliminary project. design, tender preparation, tender review and evaluation, project management, construction Phase 1B, the second and final step of the first phase supervision, organisational review of the UDA and of the LHDP, comprises: setting up an entity to operate and maintain the plant.
Hydropower & Dams © Royal HaskoningDHV 19 Project Experience: Hydropower
Ararghat HE Power Project . enhancing tourism and recreation potential in the areas adjacent to the reservoir Client: Private Development, IPP Royal HaskoningDHV’s tasks were: comprehensive Country: India (Bihar technical documentation, physical modelling studies, State) construction supervision, and As-built drawings. Year: 2012 Wiory Flood Protection Reservoir on the Swislina River
Client: Regional Water The objective of the project is to mitigate the pressing Management Authorities power shortage in Bihar State by designing and in Warsaw constructing a 7 MW hydropower station in the river Country: Poland Arar Dhar in Bihar State. The power station will be constructed as a barrage across the river with the Year: 1970 – 2008 turbine house located in-flow. Royal HaskoningDHV assisted the investment company and formal ‘contractor’ in preparing the bid for the The first initiatives related to the construction of the tender launched by Bihar State Hydroelectric Power Wiory Water Storage Reservoir were defined in the Corporation (BHPC). Tasks executed included; pre-bid early 1970s. In the initial phase, the main purpose of investigations in construction methodology and costs, the project was to serve as a water supply for the market survey of local subcontractors, review and Ostrowiec Swietokrzyski steel industry. However, due analysis of tender documents and designs, advise on to lack of sufficient financing, the function of the draft contract documents, pre-bid negotiations with sub- planned reservoir changed. The new focus was from contractors, assistance with contract negotiations and the water supply to flood protection and recreation, with award. simultaneous power generation, and water supply for agglomerations located downstream. Swinna Poreba reservoir on Skawa River Wiory Reservoir has a total capacity of 35 million m3, Client: Regional Water including a flood reserve of 19 million m3. The surface Management Authorities of the reservoir at the maximum water level reaches in Cracow 408 ha. The most important structure of the reservoir is Country: Poland an earth dam with clay core and a reinforced concrete control gallery. Discharge structures consist of a Year: 1989 – 2015 bottom outlet and four span overflow 24 m wide in total.
The underground hydropower plant includes two The construction of the reservoir in Swinna Poreba is turbosets with installed power capacity of 180 kW and one of the longest-lasting projects in hydraulic one turboset with installed power capacity of about engineering in Poland. It was designed as a multi- 50 kW. purpose reservoir which performs the following Royal HaskoningDHV tasks were the preparation of functions: comprehensive technical documentation, physical . flood protection of the Skawa River Valley modelling studies, construction supervision, and as-built downstream the reservoir, the Vistula River drawings. Valley, and of the City of Cracow
. drought protection – increasing the minimum outflow from the reservoir from – 0.77 m3/s to 6.4 m3/s
. generation of 4 MW hydropower . water supply for Silesia and in emergency (in the case of the Tresna Reservoir failure) for
the City of Cracow
Hydropower & Dams © Royal HaskoningDHV 20 Project Experience: Hydropower
Development of 23 Mini Hydropower Plants in of architecture, geotechnical and stability. A study Western Ukraine related to possible cracks was carried out, as well as the evaluation of the risks involved. Client: Evolion Czorsztyn-Niedzica Reservoir on the Dunajec Country: Ukraine Client: Regional Water Year: 2010 – 2012 Management Authorities in Cracow Country: Poland Year: 1971 – 1997
Czorsztyn-Niedzica and Sromowce Wyżne water The Ukrainian government supports the policy on reservoirs system is serving the following purposes: stimulating production of green energy. In this frame, a . flood protection subsidy system for small hydropower projects (10 MW) . energy production has been developed. An advantage of this . flow control to increase minimum flow rates development is the supply of water management . recreation systems for local rivers. Royal HaskoningDHV was selected by EnGreen to develop at least ten mini- The project also included construction of significant hydropower projects. The development embraces the auxiliary structures such as embankments and drainage entire project cycle: from feasibility studies to final systems of inhabited areas. The design further included investment decision and realisation. new roads, power lines and moving or protecting of historic objects. A system of automatic flow control, In a pre-feasibility study several possible locations for hydrological protection of the catchment area as well as barrier and power systems were examined and wastewater treatment plants and waste disposals were evaluated on both technical and financial criteria. also part of the design. In a second phase some of these locations were The Czorsztyn-Niedzica reservoir has a total capacity of elaborated, starting with a hydraulic modelling of the 232 million m3 including flood storage capacity local river. A global technical design of dam and power 63.3 million m3. It has an inundation area 1,335 ha and system ends this phase, leading to the next in which a maximum water head 54.5 m. detailed design will follow. Main structures: Moreira de Cónegos Power Plant at the Ave River . earth dam of maximum height 57 m Client: Sociedade . overflow spillway with a three span inlet weir Hidroelétrica . two power tunnels with reinforced concrete Moreirense, Lda. lining made out in the bed-rock near spillway Country: Portugal chute . peak operation water power plant with two Year: 2000 – 2001 reversible turbines of installed power 92 MW
Royal HaskoningDHV’s tasks were: comprehensive Vizela River, on the hydrological basin of the Ave River technical documentation, physical modelling studies, has a steep fall of 11.93 m and flows of 15.0 m3/s. The supervision on behalf of the design author, as-built installed power is of 1.600 KVA producing an average drawings. of 5.500 GWh/year.
Royal HaskoningDHV participation included studies related to general conception, hydraulic project, environmental integration and civil construction projects
Hydropower & Dams © Royal HaskoningDHV 21 Project Experience: Hydropower
Sromowce Reservoir on Dunajec River progressive reclamation to the excavation for the recreation and leisure-related purposes. Client: Regional Water Management Authorities . the weir is equipped with pneumatic rubber in Cracow gates. Country: Poland . inundation area of the Pilzno reservoir: 240 ha. . small hydropower plant installed capacity: Year: 1971 – 1997 0.86 MW Scope of task: technical design of retention reservoir, water power plant, weir and river training. The compensation reservoir in Sromowce Wyżne is located below the main Czorsztyn-Niedzica reservoir Nieszawa-Ciechocinek Barrage on the Vistula hence it enables a constant outflow to Pieninski Gorge River independently of the operation of the power plant of the Client: Regional Water main dam. At the weir there is an inlet for a small water Management Authorities power plant utilizing a constant outflow to Dunajec in Warsaw Gorge. Country: Poland The reservoir allows for: Year: 2002 – 2004 . ensuring constant outflow below Sromowce for among others navigation purposes in Pieninski Gorge, appropriate water and sewage The final conclusions of the feasibility study have management in the Dunajec valley determined that the construction would contribute to . supplementary pumping for the peak avoid ecological disaster that might be caused by a generation of the Niedzica Water Power possible failure of the Włocławek Barrage. This is due Station to the Nieszawa barrage supporting the existing Włocławek barrage as the second and last of the The Sromowce Wyżne reservoir has a total capacity barrages on the Lower Vistula River. 6.7 million m3 and has an inundation area of 95 ha. The hydro plant has an installed capacity of 2.1 MW The Conceptual Design provided among others for with an average yearly production 7.6 GWh. construction of the hydropower plant: . installed capacity: 51.3 MW / 57.8 MW* Royal HaskoningDHV’s tasks were: comprehensive . number of units: 6 technical documentation, physical modelling studies, . average yearly production: 304.7 / construction supervision, and As-built drawings. 354.3 GWh* Pilzno Reservoir on the Wisloka River . designed water head: 5.10 / 5.78 m* Client: Kruszgeo S.A. *depending on whether it is located in Nieszawa or Rzeszów Ciechocinek respectively. Country: Poland Przysieka Barrage on the Nysa Łużycka River Year: 1994 – 1995 Client: ZEW Dychów SA Country: Poland
Year: 1997 – 2002 Pilzno reservoir on the Wisłoka River was constructed on the long-term gravel excavation grounds.
It is a perfect example of reservoirs created in river After demolishing the existing concrete dam and other valleys within rehabilitation of mining excavations elements of the barrage, a brand new modernised through construction of water storage reservoirs. Pilzno barrage was built, consisting of the following items: reservoir in the valley of the river Wisłoka developed
Hydropower & Dams © Royal HaskoningDHV 22 Project Experience: Hydropower
. hydropower plant of 1.76 MW, . average yearly production: 697 MWh . flushing bottom outlet Royal HaskoningDHV tasks included comprehensive . fish-pass, technical documentation along with necessary . two-span weir equipped with pneumatic rubber arrangements to obtain a building permit. gates Hydropower Plant Hezenbergerstuw Royal HaskoningDHV tasks included the preliminary and detailed design, construction works, start-up, Client: Waterboard obtaining exploitation permit and commissioning. Veluwe Sulejów Dam and Reservoir on the Pilica River Country: The Netherlands Client: Regional Water Management Authorities Year: 2010 in Warsaw
Country: Poland Waterboard Veluwe, regional government for water Year: 1969 – 1973 management, in combination with GMB /
Royal HaskoningDHV, has taken care of the renovation Sulejów dam and reservoir is a main part of water of the dam Hezenbergerstuw. The water level supply system for Łódź and its suburbs. It consists of: difference between the two sides of the dam is 2.50 m, leading to the idea of installing a hydropower system . power station on 3.6 MW of nominal generating electrical energy. The 750 kW turbine generating capacity installed (type ‘jackscrew’), has an estimated capacity . earthfill dam with concrete slabs equivalent to the annual energy consumption of over . spillway 40 households. The energy is sold to an energy . reservoir of total storage capacity of 75 million company, resulting in a return on investment. m3 and average depth of 3.3 m The project was realised in just 7 months, including . water intake from reservoir (3.25 m3/s) for municipal and agriculture purposes design, permits and construction. Maczki Small Hydropower Plant and weir on the Feasibility Study of a Hydropower plant on a Biała Przemsza River Wastewater Treatment Plant, Apeldoorn Client: ZEW Rożnów Sp. Client: Water Board z o.o. Veluwe Country: Poland Country: The Netherlands Year: 2009 – 2011 Year: 2010
Wastewater plants need to pump up water for treatment The proposed hydropower plant is characterised by a purposes. After the process, the water is released low water head, it will be equipped with a hydrodynamic again, hereby making no use of the gravitational energy turbine worm also called "Archimedes" screw turbine. potential in the water. After a thorough study, one The turbine is located in the prepared bed of reinforced location at the plant was considered as appropriate. concrete, made at a specific angle of decline, communicating directly with the building slab. There is also newly designed fish-pass for fish migrating up the river (the ramp-pass type) and an access road with a manoeuvring yard to power plant.
. installed capacity: 79.56 kW
. nominal head: 2.15 m . nominal flow capacity: 5.03 m3/s
Hydropower & Dams © Royal HaskoningDHV 23 Project Experience: Hydropower
Hydropower Plant in Dobrzen Wielki on Oder Hydropower Plant Linne River Client: Rijkswaterstaat Client: PGE Renewable The Energy S.A. Country: Netherlands Country: Poland Year: 2005 Year: 2007 – 2009
Scoping, detailed design and feasibility of hydropower Royal HaskoningDHV in joint venture with construction plant on the river Meuse. Generating capacity of the company Budownictwo Hydro-Energetyka Dychow plant is 11.5 MW. Royal HaskoningDHV’s design performed all works associated with Phase I of the includes the power plant next to the navigation sluices ”Hydropower Plant in Dobrzen Wielki on the Oder River and fish passage. at the Existing Barrage – Phase I”. The scope of the Hydropower Plant Borgharen project included the construction of a hydropower plant equipped with two turbosets, 800 kW each, an open Client: MEGA Limburg inlet and outlet canals, and manoeuvre areas in front of Country: The the power plant. Royal HaskoningDHV’s tasks Netherlands included; the preliminary and detailed design, construction works, start-up, obtaining exploitation Year: 1995 – 1998 permit and commissioning.
Hydropower Plant Sambeek This hydropower plant, to be located at the weir at Client: PNEM Energy Borgharen, has an estimated capacity of 11 MW per Systems B.V. turbine. Royal HaskoningDHV delivered a detailed design concerning a power plant with three turbines, Country: The each with a nominal flow capacity of 100 m³ per Netherlands second. The head at the location is approximately 4 m. Year: 1998 – 1999 Together with the flow; this delivers an estimated
capacity of 11 MW per turbine. Until now the plant is
not yet realised. This hydropower plant, to be located on the right bank of the river Meuse of the weir at Sambeek, has an Review of the Hydropower and Water estimated capacity of 7 MW. Royal HaskoningDHV Management Standard Operation Procedure delivered a detailed design concerning a power plant (SOP) for the Citarum Hydropower Reservoirs with two turbines, each with a nominal flow capacity of Client: ADB / Ministry of 100 m³ per second. The head at the location is Public Works approximately 3.25 m. Together with the flow; this Country: Indonesia delivers an estimated capacity of 3.5 MW per turbine. Year: 2012 Until now the plant is not yet realised. Today, fish migration is an important issue; therefore the market (and Royal HaskoningDHV) is looking for more fish- The review and assessment of the hydropower and friendly solutions. water management aspects of the SOP for the Citarum hydropower reservoirs (Djuanda / Jatiluhur HEPP:
186 MW, Cirata HEPP: 8x 126 MW, Saguling HEPP: 4x 175 MW) has been carried out in the framework of the 6 Cis-project is threefold:
Hydropower & Dams © Royal HaskoningDHV 24 Project Experience: Hydropower
. Assess the current hydropower and water simulations were carried out in the framework of the management SOP and possible alternatives to hydropower and water resources analysis under the 6 the SOP by means of simulation with the Cis-project. Furthermore a quick-scan has been carried RIBASIM model for the Citarum Basin. out for potential hydropower locations in the 6 Ci’s River . Assess the decision making process related to Basin Territory. The evaluation is based on: the actual use of the emergency spillway. . The water resources performance of the . Support preparations for the situation in case measure the emergency spillway would be activated, . The effects of the measure on the water-using using a quantification with the 1D2D modelling sectors, in particular DMI water supply, framework of the flooding that would occur in irrigated agriculture and hydropower the downstream area for various combinations generation. of extreme reservoir spilling situations. The report describes the various cases that were To assess the current SOP and possible alternatives, analyzed with the Ribasim model. For each case, the simulations have been made with the existing river objective, characteristics, performance, costs and basin simulation model RIBASIM for Citarum basin. economic benefits or costs are described. The evaluation of the SOP will be in terms of success JWRSS – Hydropower evaluation rate in irrigation water supply and DMI-supply, hydropower generation, the end-of-year reservoir water Client: World Bank- level, and the frequency of the use of the Djuanda Ministry of Public spillway; a potential cause of downstream flooding. Works Country: Indonesia Hydropower and Water Resources Utilization Year: 2010 – 2012 Study (6 Ci’s sub-project)
Client: ADB / Ministry of The JWRSS (Java Water Resources Strategic Study) Public Works project focuses on three water related sectors in Country: Indonesia particular, namely the provision of bulk water for 2012 Year: Domestic, Municipal and Industrial (DMI) purposes, the provision of water for irrigated agriculture, and the
provision of water for environmental flows. Hydropower An evaluation is carried of the potential hydropower and generation on Java and Madura has also been water resources utilization measures that are evaluated: considered in the framework of the Master Plan for the . An inventarisation and mapping have been six rivers River Basin Territory (6Ci’s: Citarum, made of the existing hydropower plants on Ciluwung Cisadane, Cidurian, Ciujung and Cidanau) Java and Madura for the situation in the year 2030. . Locations of potential hydropower plants have This was later specified for the new three River Basin been evaluated and mapped Territories Citarum (1), Ciliwung-Cisadane (2) and Cidurian-Ciujung-Cidanau respectively. Ribasim
Hydropower & Dams © Royal HaskoningDHV 25
Project Experience: Hydropower
Luapula Hydro Electric Power Project Services: Preliminary design and economic viability Client: Arcus assessment of the proposed hydropower scheme, Gibb (Pty) Ltd including a hydraulic analysis and environmental risk assessment. Preparation of technical specifications Country: and tender documentation. Management of the South Africa tender process and evaluation of the technical bids Year: 2012 received.
The Chambeshi and Luapula Rivers form part of a major river system in northern Zambia that drains through a number of lakes and wetlands into the Congo River. This project included the development of a masterplan for establishing dams and hydro electric power to supply Zambia's developing economy.
Royal HaskoningDHV carried out a water resources analysis for the entire Luapula catchment using the Water Resources Simulation rainfall -runoff model (WRSM2000). Information was obtained from previous studies on rainfall, observed streamflow, evaporation, the wetland and Lakes Bangweulu and Kamplombo. Simulated flows were determined at the gauging stations following a detailed patching and calibration and data verification exercise. Calculation of the probable maximum flood (PMF) was also undertaken at pos sible dam sites on the Luapula River
Vaal Outlet Works Hydropower Scheme Client: Rand Water, Johann van der Westhuyse Country: South Africa Year: 2007- 2012
Eskom has launched its pilot cogeneration project and the Vaal Outlet Work has been identified as potential source of harnessing hydro energy currently going to waste. Rand Water has appointed RHDHV to investigate the potential power which could be generated by installing a hydro-turbine at the end of the 3.5m diameter pipeline extending from the Vaal Dam. Preliminary investigations identified that approximately 3.7 MW could be generated by installing a Compact Axial Turbine at the pipeline outlet. Project Experience: Dams and Reservoirs
Institutional Strengthening for Integrated Water Mekong River Commission Flood Management Resources Management (IWRM) in 6 Ci’s River and Mitigation Program - Structural Measures and Basin Territory Flood Proofing Client: ADB / Ministry of Client: Mekong River Public Works Commission (MRC) Country: Indonesia Country: Cambodia, Laos, Thailand and Year: 2009 – 2013 Vietnam
Year: 2007 – 2012
The Government of Indonesia developed the River The project looked at the introduction of Integrated Basin Road Map approach for an incremental Flood Risk Management in the four riparian countries of development program, which is a mix of investments in the Lower Mekong Basin, i.e. Cambodia, Laos PDR, both structural and non-structural measures. The Thailand and Vietnam. It involved the preparation of project is in DKI Jakarta, Provinces of Banten and projects of structural works for flood risk reduction West Java and divided in three main components: (reservoirs, diking schemes, river improvements and Institutional Strengthening for IWRM diversions). The focus of the project is on planning and project development. The project goals are achieved The first component focuses on capacity building of all by the creation of flood risk management teams in the stakeholders, including establishment of Water four countries that under guidance of the consultant Councils, and capacity training of River Basin carry out the following activities: Management Organizations. Secondly the component focuses on the development of proper tools for WRM . hydrological and hydraulic studies for flood planning, Strategic WRM Planning and “State of the hazard assessment Basin” reporting. . preparation of flood risk maps . identification of flood risk management Spatial Planning in 6 Ci’s (Citarum: West Java, measures and the assessment of the socio- Ciliwung – Cisadane: DKI Jakarta and Cidanau - economic and environmental impacts of such Ciujung - Cidurian: Banten) measures The second component: Strategic Spatial Planning in . the preparation of structural priority projects for relation to WRM addresses the sensitivity of water financing and eventual implementation systems for increasing land-use intensities, evidenced Water Resource and Irrigation Management in increased water demand and adverse impact on run- Project - Basin Water Resource Management off and erosion, resulting in increased flood hazards. Planning (WISMP - BWRMP) Spatial developments play a critical role to realize a sustainable future for Water Resources Management, Client: Ministry of Public and are simulated through the Java Spatial Model. Works Policy Development Country: Indonesia Year: 2010 Policy Development comprises the development of key government policies and strategies that will be fundamental to achieve Integrated Water Resources The objectives of the services are the preparation of Management in the future in the 6 Ci’s River Basin draft master plans for two national river basins Progo Territory. The component focuses on: Water Pricing, Opak Serang (BBWS Serayu Opak) and Jratunseluna Water Allocation, Balanced Stakeholder Participation, (BBWS Pemali Juana). Aspects playing an important Water Entitlements and Licensing System, Demand role are: Management and Water Conservation. . Hydropower assessment
Hydropower & Dams © Royal HaskoningDHV 28 Project Experience: Dams and Reservoirs
. quantities and qualities of water resources of floods by heavy investments in embankments and . water resources infrastructure river dredging). The services provided comprise project . water resources management preparation for the envisaged project of US$ 150M, institutionalization including evaluation of existing flood control plans and . environmental condition and potential related identifying suitable additional measures for to water resources conservation of the upper watershed. The reduction of . social economic condition of the community flood impact damage was also addressed whilst related to the water resources considering minimal negative environmental impacts, both before, during and after floods. All of these The master plan will comprise of conservation, aspects were done in consideration with the aspirations utilisation of water resources. Control of damaging of the local population and local governments to power should consist of structural and non-structural manage and sustain the flood management system. measures and its feasibility assessment. Dam (Situ-Situ) Safety Inspection and Java Water Resources Strategic Study Assessment in Jabodetabek Client: World Bank - Client: Ministry of Ministry of Public Works Public Works Country: Indonesia Country: Indonesia Year: 2010 - 2011 Year: 2009 to 2012
Java Water Resources Strategic Study (JWRSS) is intended to provide an island wide overview of available Following the dam break at Situ Gintung, the project information on land and water management. This entails a crash program for a safety inspection of all includes identifying the issues and challenges and about 300 small lakes (situ 2) in the Jabodetabek area identifying potential strategies to address these issues by a taskforce of national and international experts, and challenges based on a limited number of themes. aimed at the identification of dams that require This will function as a basis for National, Provincial and immediate repair measure in order to prevent similar Regional Governments and River Basin manager to disasters at other dams in the region. The specific formulate and finalise the River Basin Strategic objectives for the urgent risk assessment in Management Plan and River Basin Management Jabodetabek are as follows: Master Plan as required by the Water Law 7/2004 and . Assessment of (high risk) small dams and in line with Spatial Planning Law 26/2007. related structures, including criteria for risk Watershed and Flood Management in Selected ranking River Basins . Plans developed for reducing / mitigation of the risks in the near and long-term future Client: ADB - Ministry of . Clarified roles and responsibilities of Public Works management, especially regarding (small)dam Country: Indonesia safety . Capacity created at national and provincial Year: 2004 level in risk assessment of small dams and other structures and improved programming.
The immediate goals are: The project aimed to implement in selected river basins . Analysis of the current possible risk and an optimal mix of structural and non-structural advice on actions to be taken to reduce risk of measures. These included conservation of the upper dam break to standard level as to safeguard watershed (in order to reduce floodwater and sediment the safety of the people living in the ‘dam entering the river) or controlled flooding and raising break’ risk zones. flood awareness / preparedness, (which could reduce the damaging impacts of floods, rather than prevention
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. Strengthened Dam Safety Commission’s Study and Basic Design of the Water Resources procedures and operations for the situ-situ Management Plan of Lusi River Catchment Area including the procedures and operations for Client: Ministry of the situ-situ not within the Dam Safety Public Works Commission’s responsibility. Country: Indonesia Provided recommendations for management and rehabilitation of the dams. The services rendered by the Year: 2008 Royal HaskoningDHV experts concerned the following main and specific tasks: Conservation and rehabilitation of land is required to . Desk study: consists of a complete inventory of all the situ-situ within the designated area, decrease the sedimentation rate to improve the and an analysis which of this situ-situ pose a infiltration capacity of the river catchment area. risk to the people living in the vicinity. Referring to the framework of Watershed Conservation through Sustainable Land Use (WACSLU) is based on . Dam break analysis (DBA): it requires GIS data, such as a Digital Elevation Model (DEM) five basic concepts, economy, technical, environmental of the area, land use maps including the friendly, community oriented and multi sector aspects. locations and characteristics of the situ-situ, This study is the follow up of the water resources and a hydraulic model (e.g. SOBEK) capable management masterplan carried out previously, where of simulating 1D2D inundations. water resources conservation is one of the three pillars mentioned in Law no. 7 year 2004 concerning water . Visual dam safety inspection: actually determines the stability (in a qualitative way) of resources. The project is located in Blora regency and the dam (and structures) and provides Grobogan regency. information on the actual risk of the individual Jatiluhur Water Resources Management Project situ-situ. Preparation Study . Overtopping analysis: provides information on the performance of the spillway outlet Client: World Bank / Ministry of Public Works structures. . Geotechnical field investigation; Geotechnical Country: Indonesia modeling Year: 1996 – 1997 . Situ function and social benefit analysis: is important in the decision on boundary
conditions on the type of emergency measure Royal HaskoningDHV carried out a water resources and plays an important role in the consultation management study. It required the preparation of and communication process with the local feasibility and technical studies. These were to ensure communities near the situ water resources availability and improve water . Formulate of action plan : Short term and long management: to meet municipal and industrial water term action plan demands, as well as agricultural and other demands . The capacity building activities for the and to ensure quality norms. Indonesian safety inspection team . design of irrigation and drainage construction
works, flood protection works, major land drainage schemes, embankments . preparation of hydrology surveys, hydrology and geohydrology studies . environmental and health aspects of water resources development . institutional capacity building, socio-economic analysis and cost analysis
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the Government of Russia, the Lenders and the Consultant regarding the completion of design and Ashlone Wharf – Fluvial and Tidal Barrier construction of the St. Petersburg Flood Protection Client: Environment Barrier (estimated construction cost €500 million). Agency Thames Region Services included: Feasibility study, Design Review, SE (Frimley) Update and Optimisation, Construction Review, Country: United Construction Planning, Operational Review, Cost Kingdom estimate, Risk analysis, Preparation of a detailed work plan, Formulation of tender and contracting strategy, Year: 2007 – 2008 Institutional Study, Preparation of a project
implementation plan and supervision of the A feasibility study into the condition and future construction. management of a significant outfall structure on the River Thames in Southwest London. The study also Rakowice Wielkie Flood Protection, Reservoir – included the operation and maintenance of other key Phase I structures further upstream and a hydraulic model was Client: PGE Renewable developed to investigate potential environmental Energy S.A. enhancement opportunities and options for flood storage. Country: Poland Year: 2001 – 2005 Emergency Preparedness Plans and Dam Break Analyses of 15 Dams Royal HaskoningDHV designed the rehabilitation of the Client: Ghana Water Company gravel mine area, the construction of the Rakowice Barrage and introducing the Bobr River bed into the Country: Ghana mining excavations. Thus obtained water level Year: 2006 – 2008 difference of approximately 9 meters between the riverbed and the excavation created conditions for the
construction of a hydropower plant of 2 MW capacity. Fifteen dams of various sizes were included in the study which aimed to improve the legal basis for Design of Kelani Conservation Barrage disaster management related to dams. For six dams Client: National Water with significant consequences in the case of dam break Supply and Sewerage detailed EPP’s and Dam Break Analyses (DBA) were Board made. Country: Sri Lanka St Petersburg Flood Protection Barrier Year: 2002 – 2006
Client: The Ministry of Construction (Gosstroy) The project involved construction supervision of an of Russia inflatable conservation barrage across the Kelani River. Country: Russia Low flow measurements were also improved in the Year: 2004 – 2011 Kelani, Maha Oya and Attanagalu Oya by
implementation of six low flow weirs or non-structural The objective of the St. Petersburg Flood Protection measures. Barrier is to provide protection to the city against storm Remedial Works and Dike Raising of Dike 18 surges originating from the Gulf of Finland. It consists of a number of dam sections (sand, fill, and rock armour), water sluices and navigation openings (concrete and steel structures) with an overall length of 25 km. The objective of the project was to ensure there is a full, agreed and documented understanding among
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Client: Arab Potash requirements of the national Environmental Company (APC) Management Authority and in line with the World Bank guidelines. Country: Jordan Year: 2000 – 2012
In the southern basin of the Dead Sea, the Arab Potash Design Weir and Storage Reservoir at Forres and Company operates a large evaporation scheme for the Lhanbryde Dam – Moray Flood Alleviation production of predominantly fertiliser. The scheme Scheme consists of a number of pumping stations and a series Client: The Moray of evaporation ponds with retaining dikes of up to 12 m Council high. The underground of the area is characterised by zones with very low shear strength, cavities and Country: United sinkholes, faults and layers of rock salt with Kingdom overpressure and under pressure. The complex Year: 2001 – 2005 geology of the area and failure of some dikes resulted in the involvement of Royal HaskoningDHV to prepare Royal HaskoningDHV played a key role in the a problem approach for the investigation of the adjacent development of the scheme, from investigation of the Dike 18 in 2000. This project continued hereafter with flooding problem in 2001 through to supervision of the design, preparation of tender documents and construction works in 2009. The scheme includes supervision of several sections of the dikes. several innovative features, including a baffled crump Mamoral Dam Project weir and the burn management works. The baffled crump weir, which is the largest in the UK, controls Client: NIDCO discharge from the storage reservoir. As part of the (National Infrastructure Moray Alleviation Scheme Royal HaskoningDHV also Development Company) carried out the design for the Lhanbryde Dam, site surveys and commissioning of dams. Country: Trinidad Sedimentation Analysis, Dam Safety Assessment Year: 2005 – 2006 and Improvement of Flood Warning System of Kainji and Jebba Dams The main objectives of the Environmental Impact Assessment (EIA) were; Client: Niger Basin Authority . identification of project impacts with respect to Country: Nigeria physical, biological and socio-economic conditions; Year: 2006 . formulation of mitigation measures and
procedures; organisation of a comprehensive public participation process; - preparation of An independent review of the security of the Kainji and an Environmental Management Plan. Jebba dams was carried out to identify procedures and the rehabilitation works required for the security of the The following activities have been undertaken by the respective infrastructures. The sedimentation study Consultant: - a field survey to assess the current state aimed at: of the biological environment; - a household survey to determine the social impact; - a dam safety analysis; - . making a quantitative diagnose of the an open public participation procedure, involving an sedimentation phenomenon at the Kainji and important part of the affected people, including the Jebba dams seventeen families that would need to be relocated. A full EIA report was prepared, according to the
Hydropower & Dams © Royal HaskoningDHV 32 Project Experience: Dams and Reservoirs
. identifying the effects of the sedimentation on the functioning of the dams and on the
environment . determining the main causes of the phenomenon
. proposing an action plan to better manage this phenomenon in order to maintain the service level of the dams Dam Safety Assessment for 20 Dams Supervision of Odelouca Dam Client: Ministry of Public Client: INAG and Águas Works do Algarve Country: Indonesia Country: Portugal Year: 2009 – 2012 Year: 2001 – 2007
The Dam is located in Odelouca River and allows a Following the floods and dam breaches of March 2009, total storage of water of 160 hm³. Royal HaskoningDHV carried out a dam safety The work comprised of dam on the ground and injection assessment for 20 dams in Indonesia together with gallery inserted in the body of the dam foundation from 3 other Dutch companies. We have also provided which runs a curtain sealing. A surge in surface recommendations for management and rehabilitation of channel was created with about 160 m, allowing the the dams. The services rendered by the maximum flow effluent of 2272 m³ / sec. A hydraulic Royal HaskoningDHV experts concerned the following bottom outlet and a hydraulic of water intake equipped main and specific tasks: Dam assessments, training, with three levels of water intake, with the quota (58), capacity building, detailed design guidelines, review of (81) and (92) was also built. Also constructed was a designs, and institutional development. diversion tunnel with 5 m of diameter and 435 m of Environmental Auditing High Aswan Dam length; construction of access with about 3.3 km long, with engineering structures in crossing water lines. Client: International Livestock Research Institute Country: Egypt Year: 2003 – 2004
During Phase I of the Study the 19 most important negative and positive effects of the construction of the High Aswan Dam and its reservoir, Lake Nasser, have been reviewed. It was found that the impact of the High Aswan Dam are overwhelming positive and that certain pronounced negative effects have been mitigated in satisfactory manner or are under control.
Hydropower & Dams © Royal HaskoningDHV 33
Project Experience: Dams and Reservoirs
Guthega Power Station As part of the tunnelling works, an amount of excavated material will be generated by construction Client: Snowy and will require management. Hydro Prepare concept and detailed designs to remediate Country: existing bank stabilisation infrastructure and prevent Australia ongoing and future erosion. Designs to consider Year: 09/2020 – safe working environment for machinery, 05/2020 constructability, environmental impacts, high velocities and turbulent flows of water and have a 50 Snowy Hydro owns and operates Guthega Power year design life. Station (GPS), a hydropower dam located in the The Outcome Kosciuszko Mountain Range. The Snowy River RHDHV led the excavated rock placement studies experienced a high flow event causing the collapse and have provided and continue to provide a range of the 10m stone pitched retaining river wall of services including: upstream of GPS. The embankment must be ◼ hydrodynamic and sediment transport numerical reinstated to protect the levy behind it and modelling to assess plume behaviour and consequently the GPS. The levy was built to protect impact of temporary and permanent structures the power station from high river levels. on hydrodynamics; The Challenge ◼ assistance in the development of sampling and Prepare concept and detailed designs to remediate analysis plans for sediment characterisation; existing bank stabilisation infrastructure and prevent ongoing and future erosion. Designs to consider ◼ management of significant sub consultant involvement (CSIRO); safe working environment for machinery, constructability, environmental impacts, high ◼ co-ordination and attendance during field velocities and turbulent flows of water and have a 50 investigations, including coring and grab work; year design life. ◼ development and running of laboratory work to The Outcome assess material settling behaviour and particle Royal HaskoningDHV developed concept designs size analysis; and detailed design of tailout channel repairs, which ◼ preparation and production of numerous EIS were successfully constructed without problems in chapters and appendices to represent studies early 2021 undertaken; ◼ a Navigation Impact Assessment for the two Snowy Hydro 2.0 EIS Input Reservoirs during construction and operations; Client: EMM ◼ a Reference Design for the placement activities; Consulting Pty ◼ evaluation of plant and equipment, and work Ltd (for Snowy methods; Hydro) ◼ expert advice on material management including Country: treatment and placement; Australia ◼ identification and assessment of environmental Year: 05/2019 - controls; 11/2019 ◼ advice on constructability for temporary and permanent structures; The Challenge Snowy 2.0 is the largest committed renewable ◼ advice on work schedules/programs for energy project in Australia and is critical to activities; underpinning system security and reliability as ◼ Assistance in the development of cost estimates Australia transitions to a decarbonised economy. for placement and construction works. Snowy 2.0 will link the existing Tantangara and Talbingo reservoirs within the Snowy Scheme through a series of underground tunnels and a new hydro-electric power station will be built underground.
Project Experience: Dams and Reservoirs
Neckartal Dam: New Dam Construction Construction of Malczyce Barrage on the Republic of Namibia Oder River – design Client: Knight Client: Regional Pielsold / Water Ministry of Management Water, Authorities Agriculture and Country: Poland Forestry Namibia Year: 2015 Country: Namibia Year: 2019 The primary objective of the Malczyce Barrage The Challenge Project is to stop the process of erosion in the Oder The Neckartal Dam is a new dam constructed in the riverbed downstream the Brzeg Dolny Barrage, and IIKaras Region of southern Nambia. The purpose of to protect it against loss of stability resulting from the dam is to support a 5,000 hectare (12,000 acres) increased backward erosion. Erosion effected in irrigation scheme nearby. The Neckartal Dam is a lowering water level in the river by about 2.5 m, curved gravity dam on the Fish River near Berseba, a significant reduction of the groundwater levels and 40 km northwest of the regional capital, drying out of the areas adjacent to the river. Keetmanshoop. The Neckartal Dam is the largest Additionally, lowering of the bottom of the riverbed dam in Namibia, almost three times the capacity of caused the shipping lane to narrow. the Hardap Dam upstream. RHDHVis the author of the complete design
documentation (including building permit design with Our Solution obtaining building permit together with author's The curved gravity Neckartal Dam is constructed supervision). with roller compacted concrete (RCC). The Malczyce barrage constitute part of the existing structure across the Fish River has a crest length of cascade of Oder Waterway. The main purpose of its 520 m and a height of 80 m, capable of storing 850 construction is to stop erosion in the Odra riverbed Mm³ of water. Over 1 Mm³ of RCC was used to below the water level in Brzeg Dolny and its complete the dam wall. The dam water irrigates protection against loss of stability. Erosion of the agriculturally developed land, aligned to the barrage in Brzeg Dolny caused the threat of loss of government of Namibia’s “Green Scheme Policy”. barrage stability, narrowing of the navigable route From a downstream abstraction weir, pumped water and reduction of transit depths. Construction of the is piped to a reservoir above the irrigation area then Malczyce barrage allowed to obtain the following gravity-fed to farms. Controlled release of the dam effects: water to the weir fills the reservoir and simultaneously generates hydropower. ◼ securing the step in Brzeg Dolny against loss of stability; The Outcome ◼ restoring the original groundwater levels, Royal HaskoningDHV were contracted to assist with preventing the adjacent areas from flood and the mechanical equipment designs and inspections, drought; electrical designs and inspections including liaison ◼ suppression of erosive processes in the riverbed with Nampower to provide the electricity to the below the barrage; scheme, and hydropower designs and inspections. ◼ production of electricity by a hydropower plant The project includes 2 Francis turbines capable of located at the barrage; generating 3MW combined. The project also includes a pumping station with a peak capacity of ◼ restoration of shipping route parameters. 2,1m³/s and a 9 km long, 1,1 m diameter pipeline ◼ The designed investment includes: with four 1600 kW medium voltage (11 kV) pumps to ◼ three-span weir with hydraulic drive and fish pump the water to a balancing dam above the Phase bypass for a total weight snap of 3x25m = 75m; 1 irrigation scheme. ◼ constant overflow with a length of 300m with an overflow of approx. 260m, a bypass for animals
and a steel bridge on the crown;
Project Experience: Dams and Reservoirs
◼ water gate with avanports; usable length of 190 Zelazny Most Tailings storage Facility m, width 12 m and closures in the form of hydraulic actuated valves; Client: KGHM ◼ 9.0 MW hydropower plant and an average annual Polska Miedz production of 49,800 MWh, using natural river S.A. flows of 40 to 240 m3 / s; Country:Poland ◼ upper barrage station; Year: 1974 - ◼ lower barrage station; 2016 ◼ liquidation of the damming effects.
RHDHV is preferred supplier for 45 years for the Transforming Irrigation Management in largest tailing mine of Europe, located in Poland, Nigeria – Consultancy Services for the named Zelazny Most. RHDHV provides the design HJKY River Basin of new dams and is responsible for the dams safety Client: Federal monitoring of the tailing reservoir and Ministry of Water associated structures. Resources Żelazny Most Tailings Storage Facility, currently exploited by KGHM Polska Miedź S.A, Tailings Country: Nigeria Management Division. and designed by Royal Year: 2013-2016 HaskoningDHV groups member HYDROPROJEKT Sp. z o.o., is located in the South-West of Poland between Lubin and Głogów towns. It is the biggest The World Bank funded Transforming Irrigation tailings storage facility of this kind in Europe and one Management in Nigeria (TRIMING) project of the biggest in the world. comprised the following objectives: Construction of the tailings dams is executed 1. Improved instrumentation and upgrading of sequentially, following the level of the impounded hydrological and meteorological stations; tailings during the filling process. Tailings are 2. Dam safety as well as revision of transported to the dams with the pipeline network. operational procedures; IWRM plan of the Coarse-grained fractions are deposited on the HJKY basin; beaches constituting the perimeter of the dams, fine- 3. Improve river training in the Hadejia River grained fractions are deposited in the central part of up to the Hadejia Nguru Wetlands; the dams which have the shape similar to the circle. 4. Preparing feasibility study and detailed Project commenced in 1974, operation of the dams design of two large irrigation schemes, and and their subsequent extension has been carried out 5. Institutional development, information since 1977. Up to date construction of the Żelazny. system and O&M performance of the two Most dams may be divided in four stages: selected schemes. ◼ Stage I (1974-1985) – construction of the dams
for storing capacity of approximately 130 mln cu The main services of RHDHV staff include Project m and elevation of 134.50 m a.s.l.; For sitting of management, Preparation of IWRM plan, Dam the dams the natural valley (basin) was chosen. safety assessment and design of remedial works of It was closed from the East and West by starter four large dams, River training plan, Institutional dikes of max height of 25 m, constructed from the development plan, Feasibility study for Kano River local sands and material similar to sands, Irrigation Project and Hadejia valley Irrigation Project, Preparation of detailed designs, tender ◼ Stage II (1985-1995) – extension of the dams up documents, BOQ, implementation plan of structural to the storing capacity of about 230 mln cu m and elevation of 150.00 m a.s.l.; After filling the dams interventions. up to the level of elevation of the Eastern and
Western dam, additional dikes, not exceeding the height of 10 m, were constructed on the Northern and Southern side. This closed the ring of the surrounding dams around the tailings disposal; Easter and Western dams were raised through
Project Experience: Dams and Reservoirs
the subsequent construction of low perimeter Project Title Pre-Feasibility Study for an dikes of 5 m height on the tailings beaches, Impounding Dam with Conjunctive ◼ Stage III (1995-2005) – extension of the dams up Hydroelectric Power Plant for a to the storing capacity of about 350 mln cu m and Sustainable Water Supply for Zamboanga dams elevation of 160.00 m a.s.l.; During this City stage further geotechnical investigations were carried out, focusing mainly on the factors Client: USAID affecting stability of the dam, determination of Be Secure potential failure surfaces and strength Project parameters For some sections of the dams Country: additional ballast dikes were constructed, Philippine ◼ Stage IV (2005-2016) – further extension of the Year: 2016 dams and elevation of the dams crest over
180.00 m a.s.l. Zamboanga City is currently experiencing water
shortage and has already declared a State of Lining of an Effluent Dam Calamity since January 2016. At present, the water Client: Sasol intake facility has no reservoir thus, during summer Technology (Pty) where there is a decrease in flow of Tumaga River, Ltd the main water source, there is insufficient water to Country: South match the water demand from the users in Africa Zamboanga City. To help mitigate this problem, it is planned to construct a reservoir to store water during 03/2012 to Year: rainy season and use the stored water during dry 08/2016 season. The water that flows down from the Royal HaskoningDHV assisted the client in proposed reservoir could also be used for energy preventing future environmental damage by generation by the installation of a hydroelectric providing a solution to line a dam without removing power plant (HEPP). The HEPP could provide an its contents. The ventilated lining is able to contain additional and sustainable power supply to the new pollutants that would otherwise lead to rapid water treatment plant (WTP) and to Zamboanga deterioration of the lining materials City.
Royal HaskoningDHV reviewed the preliminary Royal HaskoningDHV was appointed by USAID Be design options and optimised the dam basin to Secure Team to conduct the Pre-feasibility study of determine the most cost-effective lining option. The the impounding dam with conjunctive Hydroelectric dam was divided into two new dams by means of an Power Plant and WTP to provide a sustainable water earth embankment. The first new compartment supply for Zamboanga City. (Dam 1) was sized to contain all the effluent and loose sediment in the dam. During the construction The study includes: of the embankment the effluent was stored behind a ◼ Investigation of viable options of a dam to create long coffer embankment. a reservoir for the water supply of Zamboanga Dam 1 was lined with a double composite lining of City and identify the most favourable option that high-density polyethylene and geosynthetic clay will be taken forward to full Feasibility Study; liners. As a world-first the lining was ventilated with ◼ Investigation of viable options of a HEPP that can a proprietary Enhanced Barrier System®. The be developed in conjunction with the Dam; ventilation improves the performance of the clay liners and dissipates damaging volatile organic ◼ Investigation of ideal location of the WTP that will compounds (VOC’s). A drainage system was also treat raw water coming from the reservoir; constructed to collect any leakage from the lining and return it to the dam. Furthermore, a rapid environmental and social Dam 2 was lined with a single composite liner to screening was carried out to highlight impacts and prevent rain water from washing pollutants that possible mitigating measures for the preferred could not be removed further into the groundwater. option.
Project Experience: Dams and Reservoirs
New Centennial Water Source Project Independent Engineer for Tokwe Mukorsi Dam,Zimbabwe Client: Client: Metropolitan Development Waterworks and bank of South Sewerage Africa System (MWSS) Country: Country: Zimbabwe Philippines Year: 2014- Year: 03/2012 2014 to 08/2016
Tokwe Mukorsi Dam is an uncompleted concrete- The Challenge faced rockfill dam (CFRD) in Zimbabwe. The owner A water demand analysis for Metro Manila indicated is Zimbabwe National Water Authority (ZINWA). The that between 2020 and 2025 the current water dam was designed in the early 1990’sand supply capacity will not be sufficient anymore to construction was scheduled to start in 1994. Due to satisfy the water demand of Metro Manila. In funding delays construction only commenced in addition, approximately 95% of Manila’s water 2011.In 2014 the Development Bank of Southern comes from the Angat Reservoir system only and Africa (DBSA) was approached to fund the the Client, MWSS, wishes to have a large second completion of the project. In February 2014 a large source providing an alternative supply and hence flood filled the reservoir and, with the upstream face create greater water security for Metro Manila. slab not yet completed, approximately 30m³/sof The objective of the New Centennial Water Source water filtered through the rockfill embankment. (NCWS) Project was to determine the viability of this There were serious concerns that the embankment project as a PPP project under the BOT law and to was going to fail. Extensive rehabilitation work and prepare tender documents and advisory support to improvements to the embankment were required. the client during the bidding process and financial close of the project. At the end of November 2014 the DBSA appointed
an Independent Engineer (Royal HaskoningDHV in Our Solution JV) to review the available information, inspect the RHDHV, subconsultant of the lead firm RebelGroup, site and advise on the dam’s structural integrity and was responsible for (i) assessing the technical compliance with functional-and dam safety viability of the envisioned infrastructure of two standards. A formal site inspection took place during dams, water conveyance structures, water March 2015. The team evaluated the original design, treatment plants and a hydropower station, (ii) work completed/outstanding and contractual preparing conceptual design and cost estimates for arrangements. The status of the working relationship all the works and (iii) drafting minimum performance between Owner and Contractor was also evaluated. standards for the technical components.
We established that the most suitable dam Royal HaskoningDHV’s experience of CFRDs configuration in the Kaliwa River are the Laiban Dam enabled us to make recommendations to the client (100m) and further downstream the Kaliwa dam on the technical and financial risks of the project. (75m), to be constructed in parallel in the Kaliwa The recommendations enabled the client to make an River. At the Laiban dam, a hydropower plant of 50 informed decision on future funding of the project. MW is planned to generate additional revenues. A tunnel of 28 km is envisioned to transport 2400 MLD to two treatment plants in the Metro Manila vicinity.
Project Experience: Dams and Reservoirs
Simplified Dam Break Analysis for Luezi Urir Char Noakhali Cross-Dam Project Dam and Selected Inundation Mapping Client: Silverlands Client: Ireland Holdings (Z2) Limited Silverlands Ireland Holdings (Z2) Country: Zambia Limited Year: 8/2014- 9/2014 Country: Zambia
Year: 8/2014- 9/2014 The Urir Char – Noakhali Cross dam (UCNCD) Royal HaskoningDHV was appointed to undertake a closes off the tidal channel between Urir Char and screening level dam break analysis for Luezi Dam in Noakhali resulting in enhanced accretion of land at southern Zambia. The 23m high earthfill dam, which both sides of the dam. This accretion will develop is currently under construction, is situated on the immediately after the factual closure of the channel. Luezi River approximately 15 km upstream of the In addition the cross dam will provide a road confluence of the Luezi River and the larger Kalomo connection between Urir Char and the Noakhali River. No dwellings exist along the Luezi River, but mainland. Three sections are distinguished, viz. i) an several were found on the Kaloma River approach section from Noakhali towards the actual downstream of the Luezi confluence. The objective dam in the channel between Urir Char and Noakhali, of the study was to determine whether failure of the ii) a channel section closing off this channel, and iii) Luezi Dam would result in inundation of the identified an approach section from Urir Char towards the downstream dwellings. channel section. Key features of these sections are mentioned in the table below. The total length of the The project involved dam break analysis of Luezi cross dam with its approach sections is about 10 km Dam and hydraulic modelling of the Kalomo River. the total footprint is about 57 ha. The specific tasks that were undertaken included the Royal HaskoningDHV was invited to prepare a following: feasibilty study for the UCNCD together with the safeguard documents. ◼ Hydrological assessments for Luezi Dam and the Kalomo River (1:10 000 year flood events); Description of actual services: ◼ Selection of dam breach parameters for the Luezi Dam (earthfill); ◼ Project Management ◼ Dam break analysis of Luezi Dam using HEC- ◼ Supervise preparation of Hydraulic Model for RAS v4.1 to generate an outflow hydrograph; alternative assessment ◼ Steady state modelling (HEC-RAS) of a reach of ◼ Preparation of Fesibility Study, comprising: the Kalomo River to determine worst case ◼ Assessment of Alternatives scenario flood levels in the event of a failure of Luezi Dam under flood conditions. ◼ Selection of Preferred Alternative
◼ Preparation of Feasibility Design with BOQ and The results showed that while downstream flooding cost estimate was significant, simulated flood levels were several ◼ Preparation of Environmental Impact metres below estimated natural ground elevations at Assessment, and the dwelling areas indicating no flood risk. On the basis of the results, consideration of additional ◼ Preparation of Financial and Economic Analysis simulations was not required. The study report was accepted by the World Bank, as a partial funder of the dam project, saving the client the significant cost that would have been required for a traditional dam break study (including survey).
Project Experience: Dams and Reservoirs
Hydrological Analysis of Goedertrouw Richards Bay Minerals Dam Safety Dam and Mhlathuze Weir Inspections Client: Client: Richards Bay Mhlathuze Water Minerals Country: South Country: Africa South Africa Year: 2012 - Year: 2012 2013
Project included the design of remediation measures The Mhlathuze Weir is located on the Mhlathuze to repair Sokhulu Dam after it was damaged by River, which currently supplies the Nsezi Water water inflows on an area where the liner was Treatment Plant in addition to Hillendale Mine, and damaged. Project was carried out on behalf of emergency supply point for eSikhaleni. Future Richards Bay Minerals. Dam Safety inspection on mining activities are also planned. two Category II dams. Sokhulu Reservoir is a 20m The aims of the study are to optimize the overall high embankment dambuilt from sand with a HDPE management system, abstract costs management, liner on the inside. The liner is protected by means leverage on Nsezi Storage and defining optimal of a sand-cement layer. Lake Nhlabane Weir is a 6m abstraction points during the year. The other main high weir equipped with four 10m wide FDS gates objective was to assesspossible pipeline routes, from the dam to the weir or Lake Nsezi, in order to Rehabilitation of Shongweni Dam, Kwa- minimise losses in the system Zulu Natal Client: Umgeni The analysis of water demands took the following Water into consideration urban/industrial developments, agricultural land under crops, potentially Country: South Africa environmentally sensitive areas (e.g. wetlands). Several water supply scenarios were modelled Year: 2012 incorporating different sources, including transfer from the neighbouring Thukela catchment (at different flow rates). Combinations of water demand and supply scenarios were modelled to determine the security of supply for each. Different options for Shongweni Dam is a mass concrete gravity dam that pipeline routes were designed, each with maximum was completed in 1927. The dam lies on the Mlazi lengths for gravity therewith minimizing pump costs. River some 20 km inland from the City of Durban. The pipeline route selection took the environment Dam Safety Investigations which commenced in into consideration, as per legal requirements 1988 identified two major areas of concern: The Using the extensive number of scenarios analysed, spillway capacity was inadequate and the structural it was shown that the system will soon be unable to integrity of the dam wall was questionable during meet the demands. Recommendations were made even moderate floods. The challenge was to solve which identify the best possible operation of the the dam safety aspects without limiting the area’s system to maximise security of supply. development possibilities and to do so in the most The recommended pipeline ensured that the economical way. Several options were investigated investment and operational costs were as low as including partial demolition, the use of post- possible. tensioned cables and reinstatement of storage with crest gates or inflatable weirs.
The solution finally adopted, however, involves partial demolition of the spillway and the installation of a 6.5 m high HYDROPLUS fuse gate system on the lowered sill. This system only reduced the existing Full Supply Level by 1.4 m and satisfies the
Project Experience: Dams and Reservoirs instability and spillway capacity problems at the Dam Synchronisation and Flood Releases same time. The total project cost of US$ 5 million in the Zambezi River Basin includes partial spillway demolition, manufacture Client: South African and installation of fuse gates and engineering fees. Development The project won a national award for excellence Community (SADC) from the South African Institute of Civil Engineering. and GIZ Country: South Africa Year: 2011 Safety Inspections of Dams P1, P2, P4 and P5 The Challenge Client: The Zambezi River Basin is shared by eight Johannesburg countries and covers an area of 1 350 000 km2. The Water (Pty) Ltd three existing major dams in the basin (Kariba, Gauteng Cahora Bassa and Itezhi-Tezhi) are operated Country: South primarily for the purpose of hydropower production. Africa Flood management and environmental flow Year: 2012 requirements are therefore not optimal. SADC, supported by GIZ, UKAid and the Australian The Challenge Government Aid Program, aimed to facilitate co- The Zambezi River Basin is shared by eight operation between river basin states. The aims of countries and covers an area of 1 350 000 km2. The the study were to investigate ways of achieving three existing major dams in the basin (Kariba, multiple benefits through coordinated dam Cahora Bassa and Itezhi-Tezhi) are operated operation; to advise on a basin-wide flow forecasting primarily for the purpose of hydropower production. system; to develop recommendations for potential Flood management and environmental flow infrastructure investments; and to produce a requirements are therefore not optimal. SADC, knowledge managament archive. supported by GIZ, UKAid and the Australian Government Aid Program, aimed to facilitate co- Our Solution operation between river basin states. The aims of The JV of Royal HaskoningDHV, Rankin the study were to investigate ways of achieving Engineering, Deltares and WR Nyabeze and multiple benefits through coordinated dam Associates had a strong representation of team operation; to advise on a basin-wide flow forecasting members from the region, with in depth local know system; to develop recommendations for potential how. International consultants supported the local infrastructure investments; and to produce a team. Study of the hydrological and operating knowledge managament archive. data, site visits and interviews with stakeholders were conducted. An Advisory Group with a wide Our Solution representation of government departments was The JV of Royal HaskoningDHV, Rankin actively involved in formulating the project Engineering, Deltares and WR Nyabeze and recommendations. Royal HaskoningDHV was the Associates had a strong representation of team lead partner and responsible for the outputs on members from the region, with in depth local know Recommendations for Flow Forecasting and how. International consultants supported the local Investments team. Study of the hydrological and operating data, site visits and interviews with stakeholders were conducted. An Advisory Group with a wide representation of government departments was actively involved in formulating the project recommendations. Royal HaskoningDHV was the lead partner and responsible for the outputs on Recommendations for Flow Forecasting and Investments.
Project Experience: Dams and Reservoirs
Bramhoek Dam (RCC) is collected by a drainage system. Both the smallest leaks, as well as any structural deformations are Client: Braamhoek continuously monitored by a precise measuring Consultants Joint equipment. Venture The dam, founded on rock and working under the Country: South pressure of dammed water, is endangered by the Africa impact of adverse filtration occurances. To protect Year: 2011 against excessive filtration, a cement-grout curtain was carried out in the rock foundation of the dam, up Bramhoek Dam is a Category III, single curvature, to the max depth of 60 m. However, water seepages 37 m high Grout Enriched Roller Compacted on the downstream side of the dam, indicated leaks Concrete (GE-RCC) dam with a 337 m crest length in some sections of the concrete massive. Finding and forms the lower reservoir of the Ingula Pumped solution to this problem was commissioned to Royal Storage Scheme. The dam has a 40 m long, HaskoningDHV who elaborated a comprehensive
design documentation.
- uncontrolled stepped spillway with a short apron. The dam incorporates interesting features and has proven a challenge in construction. The presence of Royal HaskoningDHV has made conceptual, extensive huge dolerite boulders tightly bedded in pleminary and detailed design, construction clay required a combination of 70 t excavators and supervision on behalf of the author.
blasting to reach suitable foundations. Geological and geotechnical surveys performed
Royal HaskoningDHV was responsible for the under the contract allowed to determine the causes preparation of hydraulic, structural and civil of adverse filtration occurences in the body of the engineering, infrastructure electrical engineering right abutment of the dam. In order to remove them, the walls of the pipeline canal, running in the right and road engineering specifically related to dam abutment of the dam were water proofed and water engineering, hydrology, hydraulics of dams and hydro-power waterways, low voltage electrical inflow to the canal was shut off with a concrete wall. aspects, costs and progress programming and main In the next step, new sections of the cement-grout roads and site access roads. This included giving curtain, sealing the rock foundation and shutting off consideration to the location of the power station in the inflow of the hillside waters to the dam, were performed. The applied solutions proved to be relation to hydraulic parameters and the detailed effective and caused significant reduction of the geological strata. filtration process.
Rehabilitation and Modernization of the Middelburg Dam Safety Inspection Solina Dam
Client:
Hydropower Client: Steve Plants (ZEW) Tshwete Solina- Municipality Myczkowce Country: Poland Country: South Year: 2010-2011 Africa
Year: 2006 The Solina dam, constructed in 1961-1968, is the
highest dam in Poland (81.8 m), the longest To carry out a dam safety inspection of Shongweni concreteone (664.8 m), and the structure with the Dam in terms of dam safety legislation, update the largest volume of the concrete massif (768,000 m3). O & M manual and emergency preparedness The dam body consists of 43 expansion zones. Such procedures and investigate the consequences of a a structure prevents the tension and cracking of the dam failure. concrete.
Expansion joints between the sections are sealed with rubber bands. Communication and control galleries inside the dam run on four levels. Their total length amounts to 2,073 m. Water seeping through
Project Experience: Dams and Reservoirs
Nacala Dam, Mozambique Site supervision, contract administration during Client: PD Naidoo construction. Construction was carried out in and Associates compliance with Amplats stringent requirements in Country: terms of both quality assurance and Safety Health & Mozambique Environment. Year: 2006 Rietvlei Dam Safety Inspections and Refurbishment Client: City of Pretoria The embankment is 17.4m high and 324m long and has a spillway comprising two 6m side radial gates Country: South situated on the left flank. The dam embankment is Africa not equipped with an outlet works and has a full Year: 1988- supply level of 74m above sea level (masl). Raw 1998 water is abstracted from Nacala Dam via an intake This inspection was carried out on the 60 year old tower situated approximately 55m upstream of the earth dam to satisfy the criteria laid down by the spillway inside the dam basin. Department of Water Affairs. Aspects dealt with included the hydrological characteristics of the Lucilia Poort Dam catchment both upstream and downstream of the Client: Anglo dam, the geotechnical aspects, the capacity and Unki Mines (Pvt) design of the spillway, the stability of the dam and its Ltd ancillary structures, the condition of the earth embankment, of foundations and of the intake tower Country: South Africa valves, pipe work and screens. These were all related to the safety of the downstream inhabitants. Year: 2002- Recommendations were made as to the remedial 2005 measures that were necessary immediately and the further tests that should be carried out before Masonry arch dam 40 m high with a crest length of embarking on further remedial work. The work was 160 m. The dam is located in a complex geological required in terms of the Dam Safety Inspection formation on the Great Dyke and is founded on a carried out earlier and involved raising the earth dipping band of ironstone about 50 m wide. In order embankment 2,6 m using a reinforced earth to fit the dam onto the competent rock the arch is a technique with a concrete wave wall on the symmetrical log spiral, but this is slightly asymmetric upstream face to carry an access road, widening the to the river axis. spillway, raising and lengthening the spillway bridge, The base width of the dam is 8m and the crest width providing splitters in the lower spillway, installing a is 4 m. The total volume of masonry in the arch is 21 cut off and kicker at the end of the spillway, 000 m3. improving the toe drainage and weighting the downstream toe, raising the existing intake tower Services: and replacing valves and pipe work within the tower Site selection and initial reporting. Preliminary and tunnel. This project won the South African design and negotiation with the Contractor for a Institution of Civil Engineers award for the most contract for excavation of the foundations. Final outstanding civil engineering achievement of 1989. design based on actual foundation conditions. The arch was initially analysed using an in-house crown Services: cantilever programme and once the shape optimised Detailed inspection by specialists followed by on-site and the foundations excavated modelled using the testing, correlation of all information, updating of all ALGOR finite element analysis programme. A drawings, carrying out hydrological, hydraulic, second phase contract for construction of the dam geotechnical stability and other investigations, was negotiated with special consideration for the calculations, preparation of designs and submission problems related to hyperinflation. of a report. Preparation of detailed designs, and tender documentation as well as contract administration and site management.
Project Experience: Dams and Reservoirs
Balfour Dam Phase 1 & 2 – Labour based Chitundo Dam construction Client: Cia do VANDUZI Client: Country: Mozambique Municipalities of Balfour & Year: 2005 Siyathemba Chitundo dam is located in Mocambique on the Country: South Chisamba river approximate 12 km north of Vanduzi Africa on the road to Tete. The purpose of the dam is to Year: 1990-1997 supply water for the irrigation of a 228 hectare irrigation scheme. The dam is a zoned earth fill dam The Town Council of Balfour drew the major portion with a maximum height of 15 metres creating a of its water supply from the existing Petrus van der reservoir with a capacity of 525 Mℓ. The spillway Merwe Haarhoff dam on the Suikerbosrand River, comprises a low masonry weir situated in a channel situated approximately 12 km from the centre of excavated in the left bank abutment. The spillway town. In order to improve this water supply, the return is via a grassed slope, which joins the river Town Council of Balfour and Siyathemba immediately below the dam. The outlet works constructed a new gravity dam largely by labour- comprise a single 200mm diameter steel outlet pipe based methods. Financial assistance was provided controlled by a sluice valve. The dam will be in part by the Department of Labour. The yield of the constructed by the owner using his own plant, new dam is designed to meet the anticipated equipment and manpower resources. average annual daily water demand within the water supply area up to the year 2005. The new dam has Services: Foundation investigations, design, a storage capacity of 4,2 million cubic metres (Full construction supervision Supply Level 1576,50). The new dam is a mass gravity structure with a central overspill portion, Upgrading of the Roodefontein Dam constructed in two phases. Phase 1 of the project Construction Phase involved the construction of a buttressed weir, Client: Bitou constructed conventionally by a civil contractor. The Municipality Phase 1 "colcrete" structure was fully incorporated Country: Western into the final structure. Under Phase II, the overspill Cape portion and flank walls were constructed of mass concrete with an internal core of "packed-plum" Year: 2004 concrete. Both the colcrete and packed-plum works are labour intensive methods of construction. Plettenberg Bay has shown a growth in water demand of more that Services: 6% per annum. The upgrading of the All consulting services, in association with others, Roodefontein Dam entailed: from conception to completion of the project, ◼ raising of the ogee concrete overflow by 2 including feasibility report, engineering design, m using 660 m3 of concrete; contract documents, tender analyses and ◼ raising the embankment by 1,7 m using 6 adjudication, contract administration and project 500 m3 of fill and erosion protective material; management up to and including commissioning of and the completed scheme. ◼ design and reconstruction of the access road.
The project included: ◼ Project Management and contract administration Construction monitoring and preparation of record drawings and construction report
◼ Update and revision of operation and maintenance manual.
Project Experience: Tidal Energy
Feasibility Study Tidal Power at the Port of Cantick head Tidal Energy Array Antwerp Client: Scottish and Southern Energy Client: City of Antwerp Renewables and Country: The Openhydro Netherlands Country: United Year: 2010 Kingdom
Year: 2010 – Ongoing The question of the City and Port of Antwerp was to Royal HaskoningDHV are working alongside other investigate the feasibility for tidal power in the port area environmental consultants to coordinate and manage and direct surroundings. To answer this question, both the EIA process for SSER and Openhydro for their up technical and financial potential of production of green to 200 MW tidal array project off Cantick head in energy had to be researched at several different Orkney. Royal HaskoningDHV are responsible for locations. managing all EIA aspects of the development from the The theoretical potential of tidal power showed three onshore grid connection to the installation of the sources: tidal range, tidal current, and waves. After turbines offshore. analysing both spatial (location) aspects and technical The Sound Of Islay (turbine) possibilities, a number of seven locations have been reviewed in detail, of which three have been Client: Scottish Power worked out in a concept design. Renewables Country: United Westray – Tidal Energy Array Kingdom Scottish and Client: Year: 2008 – 2010 Southern Energy
Renewables Country: United Consent was granted for the construction of the world’s Kingdom first tidal stream energy array, in the Sound of Islay, in 2011. Royal HaskoningDHV managed the Environ- Year: 2010 – On going mental Impact Assessment (EIA) for the Sound of Islay tidal array. The proposed tidal site will have a capacity Royal HaskoningDHV are currently supporting SSER in of up to 10 MW of renewable power for export to the their application for consent for an up to 200 MW tidal grid. The site will consist of up to ten devices deployed array site in the Westray Firth, Orkney. As lead EIA in depths from 40 to 60 m. The EIA considered all coordinators Royal HaskoningDHV, assisted by various environmental impacts associated with the tidal array third parties completed the scoping report in 2011 including marine mammals (cetaceans and seals), which was well received by stakeholders and commercial fisheries and natural fish resources, socio regulators. Royal HaskoningDHV continue to economics, marine navigation, traffic and transport and coordinate the EIA process which includes authorship ornithology. of many aspects of the Environmental Statement as well as managing other aspects of the EIA process.
Hydropower & Dams © Royal HaskoningDHV 26 Project Experience: Tidal Energy
Kyle Rhea Tidal Stream Array Lewis Wave energy Array Client: Marine Current Client: Aquamarine Turbines Power Country: United Country: Northern Kingdom Ireland 2008 – 2013 2004 – 2013 Year: Year:
Royal HaskoningDHV is currently supporting Marine Royal HaskoningDHV is supporting Lewis Wave Power Current Turbines (MCT) in their development of a Ltd, a subsidiary of Aquamarine Power, with their proposed tidal array in Kyle Rhea, on the west coast of application for developing a wave energy demonstration Scotland. Royal HaskoningDHV has been involved in array on the west coast of Lewis in the Western Isles. the initial Stakeholder consultation work has completed The proposed development incorporates a 40 MW a scoping study and undertaken and managed a series wave energy array, deploying up to 50 Oyster Wave of data collection studies. The Environmental Energy Convertors (WEC). Royal HaskoningDHV Statement (ES) was submitted in 2013 and consultation conducted an Environmental Impact Assessment for works are on-going. the development in 2012 and an application for multiple Strangford Lough SeaGen Project consents and permissions was submitted. Consent for this project is expected in March 2013. Client: Marine Current Turbines Although the energy generation is not directly taken from hydro, the WECs are used to push water around Country: United Kingdom an enclosed system of tubes that create the pressure to drive hydro-electric turbines housed onshore. Year: 2004 – 2013 Therefore the energy generation is from a hydroelectric source. The SeaGen is the world’s first commercial scale grid connected open stream turbine. Installed in 2008, it has provided power to the electricity grid in Northern Ireland since then. Royal HaskoningDHV led the environmental survey, EIA, licensing and environmental monitoring works for SeaGen since site identification and feasibility in 2004. Royal HaskoningDHV oversaw the post installation monitoring work required for SeaGen as part of SeaGen’s operating licence requirements. The initial monitoring programme ended in early 2012 and work is now on-going for the removal of remaining operational constraints, with further data collection continuing.
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3 Royal HaskoningDHV
3.1 Company Profile
Royal HaskoningDHV is a leading independent, international engineering consultancy service provider with roots established in the Netherlands, the United Kingdom and South Africa. We specialise in aviation, buildings, industry, energy and mining, infrastructure, maritime and waterways, planning and strategy, rivers, deltas and coasts, transport and asset management, and water Buildings technology. As environmental aspects change with speed, building A first choice consultancy for major world challenges, our requirements become ever more stringent. While adhering experts provide sustainable and pragmatic solutions for pit- to these, we strive to enhance our built environment. We to-port, food security and water scarcity, the development achieve this by creating inspiring, sustainable and enduring of mega-cities, sustainable infrastructure, energy resources buildings through the use of innovative technologies, and supply. delivering within budget and at minimum expense to property owners. Working together we can achieve more. At Royal HaskoningDHV we embrace this philosophy. With an overarching aim to enhance society together, we work closely with clients, stakeholders, industry, and academic leaders, to ensure projects are delivered on time and within budget, while providing a better, brighter, sustainable future. 3.2 Our Sectors
Industry, Energy and Mining Our experts in industry, energy and mining serve a wide range of industry sectors. These include oil and gas, chemicals, energy, resource recovery, mining and heavy industry, as well as manufacturing, pharmaceuticals, food and beverage, and Fast Moving Consumer Goods (FMCG). Our innovative approach and focus on delivering solutions
have helped clients all over the world achieve their Aviation ambitions. Combining the expertise of NACO (Netherlands Airport Consultants) and InterVISTAS, our experts support clients who operate within this sector by offering a broad range of aviation related services worldwide. We deliver integrated strategic, operational and technical solutions for the sustainable development of airports and airlines.
Infrastructure Our clients value our expertise because we understand why society places so much importance on infrastructure.
Hydropower & Dams © Royal HaskoningDHV 35
Working together with and for road authorities, contractors Rivers, Deltas and Coasts and private clients, we develop, design and deliver Water introduces both opportunities and threats to innovative solutions for highways and civil structures, such communities, assets and nature worldwide. As urban as bridges and underground infrastructure. Our expertise in populations grow, resources become increasingly scarce immersed tunnel engineering is renowned worldwide and the impact of climate change increases. As global through our joint venture tunnel engineering consultancy, thought leaders we provide leading edge, sustainable, TEC. flexible and cost effective solutions to the challenges of living with and without water.
Maritime and Waterways Our reputation for multidisciplinary civil engineering Transport and Asset Management excellence in the development of maritime, marine and Working in partnership with our public, private and industry waterways structures is world renowned. Collaborating sector clients, we deliver smart transport and asset closely with our clients, we plan, design and build safe, management solutions on a global scale. Our fully sustainable and environmentally sound facilities around the integrated service encompasses conception of ideas, world. functional designs, tailored programmes, project development and operational management.
Planning and Strategy By combining environmental sustainability and urban Water Technology development expertise with financial, legal and process The growing demand for clean water drives our agenda. management, we enable governments, water boards, Located in 35 countries we operate as one team of experts construction companies and project developers to achieve who understand both global and local issues, their ambitions in urban and regional planning. circumstances and legislation. From simple solutions such as providing clean water to patented innovations and leading-edge technology, we help our clients meet their sustainable, compliance and service delivery objectives.
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The company’s QMS complies with the requirements of BS/NEN-EN-ISO 9001:2000 and is certified by Lloyds Register Quality Assurance. The Approval Certification Number is 655229. The QMS also includes an Environmental Management System (EMS) which complies with the requirements of BS/NEN-EN-ISO 14001:2004 and for which registration is being rolled out across the company. The Approval Certification Number is 663206 for the Netherlands and 662753 for the UK.
3.3 About Royal HaskoningDHV
With its headquarters in Amersfoort, the Netherlands, Royal HaskoningDHV is an independent, international project management, engineering and consultancy service provider. Ranking globally in the top 10 of independently owned, non-listed companies and top 40 overall, the company’s 8,000 staff provide services across the world from more than 100 offices in over 35 countries. Our Connections Innovation is a collaborative process, which is why Royal HaskoningDHV works in association with clients, project partners, universities, government agencies, NGOs and many other organisations to develop and introduce new ways of living and working to enhance society together, now and in the future. Memberships Royal HaskoningDHV is a member of the recognised engineering and environmental bodies in those countries where it has a permanent office base. All Royal HaskoningDHV consultants, engineers, architects, planners, environmental and other specialists are members of their individual branch organisations in their various countries Company QHSE Management Royal HaskoningDHV is committed to Quality, Health and Safety and Environmental (QHSE Management) and these lie at the heart of the management of all projects. The Company’s H&S system complies with the requirement of The Health and Safety at Work Act 1974 and is certified by Lloyds Register under Certificate Number RQA664199.
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