Uganda - Mutundwe - Entebbe 132 kV Power Transmission Line and Related Substation Works

The project scope comprises the following:

• Construction of approximately 36 km of double circuit 132 kV transmission line between Mutundwe Substation near Kampala City and Entebbe, partly with four circuits and with OPGW on one circuit.
• Extension of the existing 132/33/11 kV Mutundwe Substation (two outgoing 132 kV feeders, extension of busbar system; extension/modification of protection, control, telecommunication, and auxiliary AC/DC power supply systems; civil works).
• Entebbe Substation: Construction of a new outdoor 132/33 kV substation and 33 kV indoor switchgear (double busbar system, two incoming 132 kV line feeders, two 132/33 kV transformer bays with 50 MVA power transformers, one bus coupler bay, protection, control and SCADA, tel-ecommunication and auxiliary power supply equipment, 33 kV indoor switchgear with two incom-ing and six outgoing feeders, a connection by 33 kV underground cable to the existing 33/11 kV distribution; control building, all related civil works).

intec's services

Project Design and Preparation of Tender Documents:

Review of the 2011 feasibility study report; review and adjustment of line route; pegging of angle towers; power system analysis with PSS/E; soil test report and project design report; elaboration of design and technical specifications for transmission line and substations; preparation of tender documents for EPC contracting.

Assistance during the Tendering Stage:
Lead of pre-bid meeting and site visit with Bidders; Bidder's clarifications; bid evaluation; post-tender clarifications; preparation of evaluation report; assistance during contract negotiations; preparation of EPC contracts.

Project Management and Construction Supervision:
Review and approval of design calculations and drawings; factory acceptance and site tests; supervision of works on site; monitoring of time schedule; project cost control; processing of contractors' invoices; monitoring of environmental management plan and of the adherence of the social impact assessment recommendations; enforcement of contractor's health; safety and environmental manual; witnessing of commissioning tests; preparation of commissioning protocol; punch list; preparation of final inspection and formal takeover; review of as-built drawings; preparation of project reports.

Follow-up during the two-year Defects Liability Period (DLP).

Training of Client's Personnel:
On-the-job training of electrical and civil engineers on power system analysis and design, on the preparation of specifications for transmission lines and substations and on supervision of construction works; elaboration of a detailed training programme and delivery of a 3-week training session for Client's Engineers in the Consultant's home office.

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Financing

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Bangladesh - Feasibility Study of the Transmission System Improvement, Western Zone

Bangladesh faces chronic power shortage with an estimated demand gap in the magnitude of 1900 MW and power outages in urban areas between 5-10 hours a day. Taking into account the demand forecast(s), the current load shedding and the extreme power shortage and operational constraints, PGCB launched the "Power Transmission Improvement Programme" and approached the Government for external sector assistance.

The project covers the following technical measures:

• Construction of 132 kV double-circuit transmission lines and line in-/line outs to substations
• Stringing of a second circuit on an existing 132 kV line and installation of OPGW
• Construction of 230 kV double-circuit transmission lines and line-in/line-out to existing lines
• New construction of three 132/33 kV and one 230/132 kV substation
• Extension of a total of five 132/33 kV and one 230/132 kV substation (1 GIS substation)

intec's services

Feasibility study/technical and economic justification of the planned expansion measures, i.e.:

• Network analysis and update of load flow calculations
• Assessment of socio-economic benefits
• Preliminary line route identification
• Preliminary survey of substation areas
• Layout and design on feasibility level for the 230 and 132 kV lines, substations and substation extensions
• Identification of potential training needs in terms of O&M
• Cost estimate, economic and financial analysis of planned measures
• Initial Environmental Examination (IEE) and mitigation measures
• Detailed line route survey for 70 km of 230 DC line and a total of 85 km of 132 DC lines
• Full ESIA for the selected technical measures to be implemented and Environmental and Social Management Plan (ESMP)

Tendering of resulting first-priority measures, i.e.:

• Design and elaboration of technical specifications
• Determination of the bills of quantities
• Preparation of the tender dossiers (technical and commercial)
• Assistance during tendering
• Bid evaluation
• Assistance during contract negotiations

in total for six different tender packages (three substation packages and three transmission line packages).

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Financing

Period of implementation

Mauritania - 50 MW Thermal Power Plant in Zouerate

SNIM (Société Nationale Industrielle et Minière) is a company that extracts the iron ore deposits around the mining city Zouerate, located in the Tiris Zemour region in the north of Mauritania. In order to cover its short-term electricity demand, M/s. SNIM commissioned TRACTEBEL ENGINEERING S.A. to carry out a feasibility study for a 50 MW thermal power plant in the city of Zouerate. The study on the generation units shall evaluate the following two variants:

• Conventional heavy fuel oil-fired generation units
• Dual fuel generation units running on heavy fuel oil and natural gas

Parts of the tasks under this feasibility study have been subcontracted to intec.

intec's services

intec contributed to the following tasks:

Phase 1: Analysis of the SNIM's electricity demand in the short, medium and long term, and definition of a medium and short-term supply strategy

• Site visit and data collection plus assessment of existing studies
• Demand analysis and energy balance

Phase 2: Study of the technology variants and dimensioning of production units (preliminary design)

• Analysis of advantages and disadvantages of each variant
• Proposal for a choice of technology and its justification
• Optimisation of generator unit dimensioning and cost estimates

Phase 3: Feasibility study for the chosen variant

• Site selection and climatic conditions
• Optimisation of nominal capacity of the single production units and determination of principal technical specifications
• Stability and operation analysis of SNIM's electricity network
• Analysis of the project’s technical and economic feasibility 
• Environmental and Social Impact Assessment (ESIA)
• Geotechnical survey and laboratory analyses
• Detailed design study and elaboration of tender documents

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Financing

Period of implementation

Congo (RD) - Revision of the Studies on the 220 kV Line Kamanyola - Buhandahanda

The 220 kV Kamanyola - Buhandahanda line shall evacuate the electricity generated by the Ruzizi III Hydropower Plant, which is part of the 220 kV interconnected network of the CEPGL (Communauté Economique des Pays des Grands Lacs - Economic Community of the Great Lake Countries). Studies for this line were finalised in September 2011 and shall be revised under the present project. The aim is to take into consideration the new locations of the Kamanyola and Buhandahanda Substations, and the new line concept.

intec's services

• Review of the project's technical feasibility; in particular through revision of the line's general concept (review of the line route and harmonisation of the design/double-circuit line with possibly only one single circuit operated in the first phase), study of the grid stability with the new line, set-up of a simulation model of the interconnected network, power distribution and load flow studies, review of the line protection system)
• Review of the project's economic and financial feasibility (cost estimates, economic and financial viability, proposals for project financing and implementation)
• Preparation of the detailed design for the revised line concept, elaboration of the longitudinal profile on the basis of satellite data, and tower spotting
• Preparation of an Environmental and Social Impact Assessment (ESIA) and an Environmental Management Plan (EMP) to conform with international standards, and elaboration of a Resettlement Action Plan (RAP)
• Elaboration of the tender dossier
• Organisation of a validation seminar with EGL, SNEL (National Power Company of Congo), the Steering Committee and KfW
• Participation in the project appraisal mission

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Guinea - Development Scheme for the Electrical Networks of Conakry

With the perspective to develop the country's electricity sector, the Guinean government decided to give a new momentum to the country's electrification programme to augment its citizens’ lifestyle, productivity and earnings. For this purpose, the government sought the financial support of the African Development Bank to implement the rural electrification project.

The study on the development scheme for the electrical networks of Conakry consists of the preparation of a programme to improve electricity allocation from the transmission towards the distribution network by means of the following:

• Construction or renovation of substations
• Restructuring and rehabilitation of the medium-voltage network
• Replacement of medium-/low-voltage substations
• Rehabilitation and extension of the low-voltage network

intec's services

• Inventory and diagnostics of electricity transmission and distribution in Conakry
• Feasibility and implementation study for the optimum development scheme of the electrical networks and elaboration of the tender dossier
• Environmental and social impact study

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Financing

Period of implementation