Ney Braga Hydroelectric Plant

Governor Ney Braga de Barros Dam
The dam in 2008
Location of Governor Ney Braga de Barros Dam
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
Height	145 m (476 ft)
Length	700 m (2,300 ft)
Impounds	Iguazu River
Type of spillway	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	Yes
Turbines	4 x 315 MW Francis turbines
Installed capacity	1,260 MW
Annual generation	3,662.2 GWh

The Governor Ney Braga de Barros Hydroelectric Plant, formerly known as Segredo, is 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 MW 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 m (2,552 ft) long and had a diameter of 13.5 m (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]

The dam

The Ney Braga de Barros Dam is 145 m (476 ft) high, 700 m (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 m (15,430 ft) long and 9.5 m (31 ft) diameter tunnel and into the Ney Braga de Barros Reservoir. The Jordão River is dammed 4.5 km (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 MW generators.^[4]

See also

• Governor Bento Munhoz da Rocha Netto Hydroelectric Plant
• Salto Santiago Hydroelectric Power Plant
• Salto Osório Hydroelectric Power Plant
• Governor José Richa Hydroelectric Plant
• List of power stations in Brazil

References

1. ^ Valente, Marcela (March 30, 2009). "Planned Dam Above Famous Falls Draws Fire". IPS. http://ipsnews.net/news.asp?idnews=46326. Retrieved 11 September 2010. 
2. ^ "Paraná River Basin Study Area - Figure 1". The Scientific Electronic Library Online. http://www.scielo.br/img/revistas/bjb/v63n4/19182f1.gif. Retrieved 11 September 2010. 
3. ^ "History in details". Copel. http://www.copel.com/hpcopel/english/nivel2.jsp?endereco=%2Fhpcopel%2Fenglish%2Fpagcopel2.nsf%2Fdocs%2F02B879C55BB3F0B7032574190050F379. Retrieved 11 September 2010. 
4. ^ ^{a b} "Hydroelectric Aminthas Governor Ney Braga de Barros". Wikimapia. http://wikimapia.org/1008586/pt/Usina-Hidrel%C3%A9trica-Governador-Ney-Aminthas-de-Barros-Braga. Retrieved 11 September 2010.