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On February 28, 2013, at 2154 PST, Unit 2 … On February 28, 2013, at 2154 PST, Unit 2 4kV ESF Bus G deenergized while attempting a repair to the bus automatic transfer circuitry. The deenergization of 4kV ESF Bus G initiated a start signal to Diesel Generator 2-1, which supplies emergency power to 4kV ESF Bus G. Diesel Generator 2-1 did not start due to being placed in manual control to prevent starting automatically during the repair. However, a valid actuation signal was generated to start Diesel Generator 2-1. As the Diesel Generator was shut down and in manual control, no actuation occurred.</br>This is reportable as a valid system actuation that was not part of a pre-planned sequence during testing.</br>Unit 2 is currently defueled, with the core offloaded into the spent fuel pool. No loss of cooling occurred as spent fuel pool cooling equipment had been selected to unaffected buses.</br>The NRC resident has been notified.buses.
The NRC resident has been notified. +
05:54:00, 1 March 2013 +
48,796 +
04:00:00, 1 March 2013 +
05:54:00, 1 March 2013 +
On February 28, 2013, at 2154 PST, Unit 2 … On February 28, 2013, at 2154 PST, Unit 2 4kV ESF Bus G deenergized while attempting a repair to the bus automatic transfer circuitry. The deenergization of 4kV ESF Bus G initiated a start signal to Diesel Generator 2-1, which supplies emergency power to 4kV ESF Bus G. Diesel Generator 2-1 did not start due to being placed in manual control to prevent starting automatically during the repair. However, a valid actuation signal was generated to start Diesel Generator 2-1. As the Diesel Generator was shut down and in manual control, no actuation occurred.</br>This is reportable as a valid system actuation that was not part of a pre-planned sequence during testing.</br>Unit 2 is currently defueled, with the core offloaded into the spent fuel pool. No loss of cooling occurred as spent fuel pool cooling equipment had been selected to unaffected buses.</br>The NRC resident has been notified.buses.
The NRC resident has been notified. +
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00:00:00, 1 March 2013 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
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