Product Code Database
The Darbandikhan Dam () is a multi-purpose embankment dam on the Diyala River in northern Sulaymaniyah Governorate, Iraq. It was constructed between 1956 and 1961. The purpose of the dam is irrigation, flood control, hydroelectric power production and recreation. Due to poor construction and neglect, the dam and its 249 MW power station have undergone several repairs over the years. A rehabilitation of the power station began in 2007 and was completed in 2013.
Between 1983 and 1985 the dam's power station was replaced by German (Polensky & Zöllner) and Japanese companies (Mitsui). The original 2 × 800 kW generators were replaced with the current power plant's 83 MW generators. The generators were commissioned in 1990 after the political situation in the country calmed. However, two of the generators were not commissioned correctly and the turbines suffered from severe cavitation. New spillway gates were installed between 1989 and 1990 after they were removed in 1988 because of the Iran–Iraq War. During the war, the spillway and substation were damaged from bombing. The power station was damaged from bombing in 1990 as well. In 2007, the World Bank began a US$35.36 million project to repair the Darbandikhan and . Repairs to the Darbandikhan Dam cost $18.85 million and were completed in 2013 resulting in 100 percent power availability.
To protect the dam from flooding, it is equipped with a controlled chute spillway on its right bank. It is controlled by three x 15 m . At the terminus of each chute there is a ski-jump to help dissipate energy. The maximum discharge capacity of the spillway is . The dam's power plant is located at its toe and contains 3 x 83 MW Francis turbine-generators. They are each afforded a rated hydraulic head of and can each discharge . Above the tail-race for each turbine is an irrigation outlet. Each of the three outlets can discharge up to downstream.
See also
External links
|
|
