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A model of a power unit, comprising turbine and generator, of the Sayano-Shushenskaya power plant. Turbines of the type used in this power plant have a very narrow working band at high efficiency regimes. If this band is exceeded the turbines begin to vibrate, caused by the pulsation of water flow and water strokes.
A large section of the upper reservoir failed, draining over a billion gallons of water (4 million m³) in less than half an hour. There were no fatalities, but five people were injured. The failure resulted in permanent damage to the surrounding landscape and power generation did not resume until 2010. 2005 [13] [14] [15] Itaipu Dam: Paraná (BR)
The system had battery backup power, called an Uninterruptible Power Supply (UPS), but, concurrently with the manual switch to the power system, that went offline before full power was restored. [34] An RVAMag report said that the IT battery backup system ran out too quickly, [ 18 ] after about an hour into the two-hour power loss. [ 36 ]
An investigation is being caried out after a hospital was left running on battery power when its back-up generator “failed” during a power outage in the midst of Storm Eowyn, MSPs have been told.
Cuba’s electrical grid shut down on Friday, plunging the whole country into a blackout after one of the island’s major power plants failed, according to its energy ministry.. In a statement on ...
On December 14, 2005, a catastrophic failure in the upper reservoir dam put the plant out of operation until it was rebuilt, recertified, and reopened on April 21, 2010. [10] The new upper reservoir dam, rebuilt from the ground up, is the largest roller-compacted concrete dam in North America. [11]
However, the tsunami following the earthquake quickly flooded the low-lying rooms in which the emergency generators were housed. The flooded generators failed, cutting power to the critical pumps that must continuously circulate coolant water through a nuclear reactor for several days in order to keep it from melting down after being shut down.
A flooded engine is an internal combustion engine that has been fed an excessively rich air-fuel mixture that cannot be ignited. [1] This is caused by the mixture exceeding the upper explosive limit for the particular fuel. An engine in this condition will not start until the excessively rich mixture has been cleared. [2]