Ney Braga Hydroelectric Plant

Governor Ney Braga de Barros Dam
The dam in 2008
Location of Governor Ney Braga de Barros Dam in Brazil
Official name Governor Ney Braga de Barros Hydroelectric Plant
Location Segredo, Paraná, Brazil
Coordinates 25°47′35″S 52°06′47″W / 25.79306°S 52.11306°W / -25.79306; -52.11306Coordinates: 25°47′35″S 52°06′47″W / 25.79306°S 52.11306°W / -25.79306; -52.11306
Construction began 1987
Opening date 1992
Owner(s) Copel
Dam and spillways
Type of dam Embankment; concrete face, rock-fill
Impounds Iguazu River
Height 145 m (476 ft)
Length 700 m (2,300 ft)
Spillway type Service, controlled
Spillway capacity 50,000 m3/s (1,800,000 cu ft/s)
Reservoir
Creates Governor Ney Braga de Barros Reservoir
Power Station
Commission date 1992
Type Conventional
Turbines 4 x 315 MW (422,000 hp) Francis turbines
Installed capacity 1,260 MW (1,690,000 hp)
Annual generation 3,662.2 GWh (13,184 TJ)

The Governor Ney Braga de Barros Hydroelectric Plant, formerly known as Segredo, is a dam and hydroelectric power plant on the Iguazu River near Segredo in Paraná, Brazil. It is the fourth dam upstream of the Iguazu Falls and was constructed between 1987 and 1991 while being inaugurated in 1992.[1][2] The power station has a 1,260 megawatts (1,690,000 hp) capacity and is supplied with water by a concrete face rock-fill embankment dam.

It is owned and operated by Copel who renamed it after Ney Braga de Barros, governor of Paraná between 1961–1965 and 1979–1982. It was the first hydroelectric project in Brazil's history to provide an Environmental Impact Assessment.[3]

History

Construction on the dam began in September 1987 with the diversion of the Iguazu River. The diversion tunnel was 778-metre (2,552 ft) long and had a diameter of 13.5 metres (44 ft), it was completed in June 1988. Excavations for the dam's foundation began in September 1988 and was completed in December 1989. Construction was complete in 1992.[4]

Ney Braga de Barros Dam

The Ney Braga de Barros Dam is 145 metres (476 ft) high, 700 metres (2,300 ft) long and is of concrete face, rock-fill design. Water from the Jordão River, 2 km southwest of the dam, is diverted through a 4,703-metre (15,430 ft) long and 9.5-metre (31 ft) diameter tunnel and into the Ney Braga de Barros Reservoir. The Jordão River is dammed 4.5 kilometres (2.8 mi) upstream of its mouth with the Iguazu River with a roller-compacted concrete dam. The water from the diverted river increases the reservoir inflows by 10%. The power station contains 4 x 315 megawatts (422,000 hp) generators.[4]

See also

References

  1. ↑ Valente, Marcela (March 30, 2009). "Planned Dam Above Famous Falls Draws Fire". IPS. Archived from the original on 10 June 2011. Retrieved 11 September 2010.
  2. ↑ "Paraná River Basin Study Area - Figure 1". The Scientific Electronic Library Online. Retrieved 11 September 2010.
  3. ↑ "History in details". Copel. Retrieved 11 September 2010.
  4. 1 2 "Hydroelectric Aminthas Governor Ney Braga de Barros". Wikimapia. Retrieved 11 September 2010.
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