Language: English Original: English PROJECT: TANZANIA – NORTH WEST GRID (400 kV NYAKANAZI – KIGOMA TRANSMISSION LINE) COUNTRY: UNITED REPUBLIC OF TANZANIA RESETTLEMENT POLICY FRAMEWORK (RPF) SUMMARY SEPTEMBER 2017 RESETTLEMENT POLICY FRAMEWORK (RPF) SUMMARY Project Title: 400 kV NORTH WEST GRID NYAKANAZI – KIGOMA TRANSMISSION LINE Project Number: P-TZ-FAO-013 Country: Tanzania Sector: ENERGY Project Category: 1 1. PROJECT BACKGROUND AND RAIONALE In Tanzania, outside the major cities and towns, only regional headquarters, some district township and a limited number of villages are supplied with electricity currently. The lack of basic modern energy services in most rural areas has been perceived as a bottleneck in social and economic development. In an effort to rectify this situation, the Ministry of Energy and Minerals through Tanzania Electric Supply Company Limited (TANESCO) has decided to connect several regions in Western and North Western Tanzania to the national grid by installation of 400 kV transmission line (TL) from Nyakanazi to Mbeya (1080 km) and associated substations at Nyakanazi, Kigoma, Mpanda, Sumbawanga, Tunduma and Mbeya. The compensation costs of the project is funded by the Government of United Republic of Tanzania while construction costs will be funded by donors and or financiers. The project has been divided into three phases due to distance to be covered (1080 km) and the financial implication to such distance. Phase I is the construction of Mbeya, Tunduma and Sumbawanga 400/200/132/33 kV substations and Transmission Line (320 km) while Phase II involves the construction of Nyakanazi and Kigoma 400/220/132/33 kV substations and Transmission Line (280 km). Phase III will include a construction of 400/132/33 kV Mpanda Substation and construction of 400kV Transmission line from Kigoma to Sumbawanga via Mpanda (479 km) respectively. The project aims to connect several regions in Western and North Western Tanzania to the national grid. Through the implementation of the project, which is to help enlarge productivity in agriculture and industry enterprises, it is expected to achieve a sustainable and high quality economic development. It is expected that the project will provide a ring feeder to the grid and possibly connect the grid to RPF Summary Page 1 of 15 NWG 400kV Transmission Line and Substations neighbouring countries for both export and import of electricity. Stable grid power supply will reduce power generation by using thermal power plants and thus reducing the pollution from diesel oil burning and consequently making an improvement of environment. 2. PROJECT LOCATION The North-West Grid Power project of Tanzania is to enhance the power network in western and north - western Tanzania. The proposed project Phase II involves construction of about 280 km of 400 kV transmission line (TL) with a doublecircuit and associated substations at Nyakanazi and Kigoma. Generally, the proposed project is following the main regional road from Nyakanazi to Kigoma and is located about 200 m to 5 km away from the main regional road. The route from Nyakanazi to Kigoma is about 280 km in length with double circuit. Nyakanazi Substation is located outside Biharamulo in Nyakanazi town at Kabale village, 5 km east from the cross between T3 and T9 road and north of T3 road. The Transmission Line stretches from Nyakanazi Substation to east then to south over pass T3 road, and goes along T9 road. The road is generally in plain region and goes higher at the gentle slope near Kibondo and passes at Kanembwa National Service Camp, which was formerly a refugee camp. Along the route, there are some hills covered with grass and valley filled with forest, with exotic plant breeds near residence. The route passes the Moyowosi Game Reserve (23.3 km) and Malagarasi River as moved from Kibondo to Kasulu. The route also passes through North Makere forest reserve (11 km) where Nypha species is the main plant. Permit to pass through protection areas should be sought to the respective authority before construction of the Line. When approaching the proposed substation at Kidahwe village about 24 km from Kigoma, the line encounters irregular undulations which prevail for about 1 km. RPF Summary Page 2 of 15 NWG 400kV Transmission Line and Substations 3. PROJECT COMPONENTS Like any other transmission line, the project will have the following components that trigger involuntary resettlement. The way leave corridor width has been proposed to be set to a maximum of 50 m instead of 80 m in order to reduce compensation costs of the project and thus saved money can be allocated by the Government to other development projects. The proposed conductor for the project is an aluminium steel reinforced conductor (ACSR) Class AA according to US standard ASTM B232, code name Blue jay with a total cross section of 604.39 mm², consisting of 39.03 mm² steel and 563.93 mm² aluminium. Another option to the Blue jay conductor is the AAAC 659-AL3 (Sorbus). All aluminium conductors steel reinforced (ACSR) is the most commonly used conductor type in the world and also in Africa. Its utilization is justified because of its strength, necessary for very long spans and very heavy loadings. Three phase conductors will be used in the project to transport electric current. Ground wires will be arranged, on both sides of the tower for protecting the conductor from strike of lightning. One side is common convention steel wire (GSW) -ACSR 95/55 and the other side is optical ground wire (OPGW) for the sake of communication. The number of cores of the OPGW is 48. Transmission Towers: The following types of towers are planned for construction of the transmission line of this project: o Suspension tower (0° to 2° angle) o Light angle suspension tower (2° to 15° angle) o Medium angle suspension tower (15° to 30° angle) o Heavy angle tension tower (30° to 70° angle) Foundations: The influence of ground water level will be taken into consideration for foundations design in order to ensure uplift force stability while the effect of flood submergence in 50 years will also be taken into consideration. The pad and chimney foundation has the same slope as the leg of the tower. Pile foundation piles are formed by the mechanical drill and generally their diameter is more than 600 mm. Single pile and single pile with bearing platform may be adopted based on foundation acting force and hydrographic and geological conditions. The piles are usually used for soft foundation and swamp districts with river crossing and lower bearing capacity. Raft foundations: According to foundation acting force and hydrographical and geological conditions, the raft foundations are mainly used for soft foundation and swamp districts. Raft foundations have the advantage of reducing differential settlements as the concrete slab resists differential movements between loading positions. They are often needed on soft or loose soils with low bearing capacity as they can spread the loads over a larger area. Substations: For the construction of 400 kV line, three new ones will be constructed at Nyakanazi in Biharamulo, and Kamara in Kigoma. The substation will require proper fencing to avoid electrocution of people and animals. Nyakanazi substation is located at 300719 Eastings and 9669448 Nothings of zone 36 in Kabale village, Biharamulo district, Kagera region. The adjacent land is mainly used for agriculture activities involving food crops such as maize, banana and potatoes. The substation will have 1 circuit of 400 kV outgoing line and two main transformers each with 120 MVA. Also the substation will consist of one 400 kV double bus bar with bus coupler. The size of the substation is about 16000 meter square and is about 5 km west of Nyakanazi village. Land acquisition processes for this substation is at advanced stage; as compensation to the previous owner has already been completed. The substation at Kigoma is located at 810092 Eastings and 9458276 Nothings of zone 35 in Kidahwe village, Kigoma Rural district in Kigoma region. The adjacent land is mainly used for agriculture activities involving food crops such as maize, palm oil, cassava, banana and potatoes. The substation will have two circuits of 400 kV outgoing line, 1 outgoing line to 400 kV Mpanda substation and 1 outgoing line to 400 kV Nyakanazi substation. The substation will also have one main transformer of 120 MVA and one 400 kV single busbar for four feeders and buscoupler. The size of the substation is about 28000 meter square and is about 24 km to the north east of Kigoma Town at Kidahwe village. Land acquisition processes are at early stage, where the village and district council authorities have been notified on the need of acquiring RPF Summary Page 3 of 15 NWG 400kV Transmission Line and Substations the area. The proponent will officially notify the respective authority for further land acquisition processes. Access Roads will be requires during construction and maintenance of transmission line and may be paved or gravelled. In some cases only short diversions from existing roads will be sufficient in other cases a road will be made in the transmission line itself. Re-contouring of the land and vegetation clearing may be required for access road construction. Construction Materials need for the tower foundations and substations include concrete, steel bars, wielding rods, steel and bricks Equipment and Machines 4. PROJECT ACTIVITIES The project activities will include a range of operations that are aimed at ensuring that the 400 kV power transmission line from Nyakanazi to Kigoma is completed in time and is operational as required. More than 100 workers from local communities in the project area will be involved during mobilization, construction and demobilization phases. The implementation of the proposed project will involve the following activities based on the project phases.