Plant shutdown for maintenance

Hydrogen Leak into Main Generator Stator Cooling Water System Causes Nuclear Plant to Shutdown

11:23 AM Thu Jan 7, 2010 -- Anonymous (not verified)

A previously identified generator hydrogen gas leakage into the stator cooling water system exceeded the predetermined maximum operational allowance and the nuclear plant was shut down from 100 percent power in accordance with plant operating procedures. The leak was identified by monitoring the stator water cooling system detraining tank. Following reactor shut down and generator rotor removal, a small hole was located in the collector end winding area of a slot on the top stator bar.

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