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At 0810 CST on 2-13-2004, all four Steam G … At 0810 CST on 2-13-2004, all four Steam Generators alarmed with Steam Flow/Feed Flow Mismatch alarms, followed by indication of decreasing level in "D" Steam Generator. The reactor tripped approximately 20 seconds later on Lo-Lo level at 23.5% in "D" Steam Generator, as required. The cause of the loss of feedwater flow to "D" Steam Generator is under investigation.</br>All plant safety related systems operated as required. The Steam Dumps, which function to remove excess heat as the secondary systems shutdown, exhibited control problems resulting in operation of the Steam Generator Atmospheric Relief Valves (ARVs) until the steam dump controller setpoint was adjusted and the steam dumps began to operate normally. The steam dumps are currently operating in automatic. The Steam Generator ARVs closed when the steam dumps began to operate.</br>The auxiliary feedwater system actuated as designed, and a Feedwater Isolation signal was generated as designed on Lo-Lo Steam Generator Level.</br>The plant is currently stable in Mode 3 at NOP and NOT while plant personnel investigate the causes of the trip and formulate the repair/restart plan.</br>Decay heat is currently being removed via the steam dumps. The plant electrical system responded normally and all emergency diesel generators remain in standby. There are no primary to secondary leaks. The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
14:10:00, 13 February 2004 +
40,517 +
11:00:00, 13 February 2004 +
14:10:00, 13 February 2004 +
At 0810 CST on 2-13-2004, all four Steam G … At 0810 CST on 2-13-2004, all four Steam Generators alarmed with Steam Flow/Feed Flow Mismatch alarms, followed by indication of decreasing level in "D" Steam Generator. The reactor tripped approximately 20 seconds later on Lo-Lo level at 23.5% in "D" Steam Generator, as required. The cause of the loss of feedwater flow to "D" Steam Generator is under investigation.</br>All plant safety related systems operated as required. The Steam Dumps, which function to remove excess heat as the secondary systems shutdown, exhibited control problems resulting in operation of the Steam Generator Atmospheric Relief Valves (ARVs) until the steam dump controller setpoint was adjusted and the steam dumps began to operate normally. The steam dumps are currently operating in automatic. The Steam Generator ARVs closed when the steam dumps began to operate.</br>The auxiliary feedwater system actuated as designed, and a Feedwater Isolation signal was generated as designed on Lo-Lo Steam Generator Level.</br>The plant is currently stable in Mode 3 at NOP and NOT while plant personnel investigate the causes of the trip and formulate the repair/restart plan.</br>Decay heat is currently being removed via the steam dumps. The plant electrical system responded normally and all emergency diesel generators remain in standby. There are no primary to secondary leaks. The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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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>.
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14:10:00, 13 February 2004 +
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