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Initiating alarm received was a Turbine Tr … Initiating alarm received was a Turbine Trip. All on site buses 1, 2, 4, 5 and 6 swapped to the Reserve Auxiliary Transformer power supplies. Bus 3 did not swap as expected. The station has entered a Technical Specification 3.8.1.1 (a) 72 hour action statement for offsite power distribution with 345 kV Bus 3 unavailable.</br>All safety systems operated correctly. The station continues to troubleshoot the initiating cause of the Turbine Trip. The plant is stable in Mode 3.</br>During the swap of non safety buses to the Reserve Auxiliary Transformer the Reactor Coolant Pumps (RCP) tripped. Following the loss of power to the RCPs the reactor stabilized in natural circulation. A Pressurizer PORV cycled following the trip. One RCP was restarted to restore forced circulation. Auxiliary Feedwater Pumps started as expected on the trip and were subsequently secured. </br>All control rods fully inserted on the trip. The current decay heat removal path is Start-up Feedwater supplying water to the Steam Generators steaming to the Condenser Steam Dumps.</br>The licensee notified the NRC Resident Inspector.</br> * * * UPDATE AT 0348 ON 1/20/08 FROM FORREST TO HUFFMAN * * * </br>The licensee has indication of a differential voltage fault on the C phase of the 345 kV line that feeds the Unit Auxiliary Transformer and the generator step-up transformers. The licensee also wanted to ensure that the report reflected the specified system actuation of Auxiliary Feedwater.d system actuation of Auxiliary Feedwater. +
04:02:00, 20 January 2008 +
43,921 +
02:55:00, 20 January 2008 +
04:02:00, 20 January 2008 +
Initiating alarm received was a Turbine Tr … Initiating alarm received was a Turbine Trip. All on site buses 1, 2, 4, 5 and 6 swapped to the Reserve Auxiliary Transformer power supplies. Bus 3 did not swap as expected. The station has entered a Technical Specification 3.8.1.1 (a) 72 hour action statement for offsite power distribution with 345 kV Bus 3 unavailable.</br>All safety systems operated correctly. The station continues to troubleshoot the initiating cause of the Turbine Trip. The plant is stable in Mode 3.</br>During the swap of non safety buses to the Reserve Auxiliary Transformer the Reactor Coolant Pumps (RCP) tripped. Following the loss of power to the RCPs the reactor stabilized in natural circulation. A Pressurizer PORV cycled following the trip. One RCP was restarted to restore forced circulation. Auxiliary Feedwater Pumps started as expected on the trip and were subsequently secured. </br>All control rods fully inserted on the trip. The current decay heat removal path is Start-up Feedwater supplying water to the Steam Generators steaming to the Condenser Steam Dumps.</br>The licensee notified the NRC Resident Inspector.</br> * * * UPDATE AT 0348 ON 1/20/08 FROM FORREST TO HUFFMAN * * * </br>The licensee has indication of a differential voltage fault on the C phase of the 345 kV line that feeds the Unit Auxiliary Transformer and the generator step-up transformers. The licensee also wanted to ensure that the report reflected the specified system actuation of Auxiliary Feedwater.d system actuation of Auxiliary Feedwater. +
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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>.
22:35:25, 24 September 2017 +
02:55:00, 20 January 2008 +
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04:02:00, 20 January 2008 +
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