| Accident at the Russian Biggest Hydroelectric Powerplant: Sayano-Shushenskaya, in Siberia. Music: The Black Isle (Byrne/Eno Remix) by (dj) morsanek morsanek.blogspot.com www.youtube.com Album: Our Lives In The Bush Of Disquiet by Marc Weidenbaum disquiet.com www.archive.org Powerplant data: Number of Units: 10. Turbine Type: Francis (16 blades). Rated Power: 650 MW each one. Rated Discharge per Unit: 358,5 m³/s. Nominal Speed: 142,86 rpm. Net Head: 194 m. Operation Date: 1978. Runner Weight: 156 ton. Runner Diameter: 6,77 m. One of the world's largest hydro-electric plants, this dam is 245 m (800 ft) high and stretches 1 km (0.6 miles) across the Yenisei river. Opened in 1978, the station provides a quarter of RusHydro output and is a major power supplier to at least two smelters owned by United Company RUSAL, the world's largest aluminium producer. The hydroelectric power station is located on the Yenisei River, near Sayanogorsk in Khakassia, Russia. Before the accident, it was the largest power plant in Russia and the sixth-largest hydroelectric plant in the world. The accident: ACCORDING TO THE OFFICIAL REPORT, DATED FIRST DAYS OF OCTOBER, THE COLLAPSE WAS DUE TO FATIGUE AND VIBRATION OF THE TURBINE. At 08h 13m local time (00h 13m GMT) on 17 August 2009, the station suffered a catastrophic "pressure surge" in turbine known as a "waterhammer". The sudden water pressure surge resulted in the ejection of turbine 2 with all equipment, a total weight some 900 tons, from its ... |
