Irganai Dam is a hydroelectric dam in the Untskul region of Dagestan,

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...

. It is located on the river Avar Koisu.

History

Construction of the dam and power station started in 1979. The first generation unit of the Irganai hydropower station was launched in 1998. The second generation unit was launched in 2001.

Technical description

The dam is high and long at the crest. It is filled of gravel with asphalt-concrete diaphragm. The complex includes tunnel spillway, intake structure, two diversion tunnels each, underground surge tanks, steel-reinforced concrete penstocks, and a powerhouse. Irganai is the largest derivational hydroelectric power station in Russia, with two radial-axial hydraulic units with a capacity of 200 MW each. The power station has a total installed capacity of 400 megawatts (MW) and projected capacity of 800 MW. Its mean annual electric energy output is 1,280 GWh. The dam creates the Irganai reservoir. The reservoir has a surface area of . Its full capacity is and alive storage capacity is . The dam and power station is projected by

Lenhydroproject Lenhydroproject (russian: Ленгидропроект) is a major research and design institute for hydrotechnology and hydroelectric engineering based in St. Petersburg, Russia. Since 1993 it is incorporated as a " JSC Lenhydroproject", part of ...

and operated by

RusHydro RusHydro (previous name: Hydro-OGK, russian: РусГидро) is a Russian hydroelectricity company. As of early 2012 it had a capacity of 34.9 gigawatts. In late 2009, it was the world's second-largest hydroelectric power producer and is ...

Incidents

On 7 September 2010, fire broke out at power station's hall. On 9 September 2010, Russian security forces defused an explosive device equivalent to of

trinitrotoluene Trinitrotoluene (), more commonly known as TNT, more specifically 2,4,6-trinitrotoluene, and by its preferred IUPAC name 2-methyl-1,3,5-trinitrobenzene, is a chemical compound with the formula C6H2(NO2)3CH3. TNT is occasionally used as a reage ...

in the room. On 31 January 2011, a stick of dynamite was discovered at the power station.

References

External links

{{stack, {{Portal, Russia, Water, Renewable energy Hydroelectric power stations in Russia Dams in Russia Buildings and structures in Dagestan Dams completed in 1998