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On January 27, 2009 at approximately 2007, … On January 27, 2009 at approximately 2007, the Unit 2 High Pressure Coolant Injection (HPCI) System was declared inoperable due to a sustained high level in the HPCI Exhaust Line Drain Pot. This sustained high level was caused by a failure of the HPCI Barometric Condenser Condensate Pump, which prevented the removal of the accumulated condensate. An alternate drain path was established and the exhaust line drain pot high level condition was cleared at 2202. However, due to this condition existing for approximately two hours, it cannot be assured that HPCI would have been able to perform its designed function under all conditions. The potential of HPCI system component damage or isolation from an exhaust line failure due to water hammer during a system initiation could not be positively eliminated.</br>Initial safety significance: Minimal. The Reactor Core Isolation Cooling (RCIC) System, Automatic Depressurization (ADS) System, and Low Pressure Emergency Core Cooling Systems (ECCS) - two Loops of Core Spray and two Loops of Low Pressure Coolant Injection (LPCI) - remain operable.</br>Manual actions have been taken to drain the HPCI Exhaust Line Drain pot and have been successful. Determination of the cause of the failure of the HPCI Barometric Condenser Condensate Pump and restoration to service are in progress.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
01:07:00, 28 January 2009 +
03:12:00, 28 January 2009 +
01:07:00, 28 January 2009 +
On January 27, 2009 at approximately 2007, … On January 27, 2009 at approximately 2007, the Unit 2 High Pressure Coolant Injection (HPCI) System was declared inoperable due to a sustained high level in the HPCI Exhaust Line Drain Pot. This sustained high level was caused by a failure of the HPCI Barometric Condenser Condensate Pump, which prevented the removal of the accumulated condensate. An alternate drain path was established and the exhaust line drain pot high level condition was cleared at 2202. However, due to this condition existing for approximately two hours, it cannot be assured that HPCI would have been able to perform its designed function under all conditions. The potential of HPCI system component damage or isolation from an exhaust line failure due to water hammer during a system initiation could not be positively eliminated.</br>Initial safety significance: Minimal. The Reactor Core Isolation Cooling (RCIC) System, Automatic Depressurization (ADS) System, and Low Pressure Emergency Core Cooling Systems (ECCS) - two Loops of Core Spray and two Loops of Low Pressure Coolant Injection (LPCI) - remain operable.</br>Manual actions have been taken to drain the HPCI Exhaust Line Drain pot and have been successful. Determination of the cause of the failure of the HPCI Barometric Condenser Condensate Pump and restoration to service are in progress.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
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100 +
00:00:00, 28 January 2009 +
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>.
02:12:47, 2 March 2018 +
03:12:00, 28 January 2009 +
true +
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0.0867 d (2.08 hours, 0.0124 weeks, 0.00285 months) +
01:07:00, 28 January 2009 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.