Browse wiki
Jump to navigation
Jump to search
98 +
WBN Unit 1 experienced a failure of the B- … WBN Unit 1 experienced a failure of the B-A ERCW pump on July 21, 2008, at 2:46 p.m. EDT. The plant entered LCD 3.7.8, Condition A, for one ERCW train inoperable and LCD 3.8.1, Condition C, with two required DGs in Train A inoperable concurrently. Required Actions for LCO 3.7.8 and LCD 3.8.1 required restoration of the inoperable ERCW train and one DG to OPERABLE status in 72 hours, respectively. Plant shutdown was initiated in accordance with LCD 3.7.8, Condition B and LCD 3.8.1, Condition G when the above Required Actions were not met. The root cause of the pump failure is unknown at this time. An event team has been set-up to determine cause of pump failure. Currently, the unit is performing a control shutdown, and all systems are functioning as expected.</br>The licensee does not expect the ERCW pump to be returned to service and will downpower at 15% per hour. The licensee expects to be in Mode 3 by 2030 EDT. All required safety systems for safe shutdown are operable.</br>The licensee has notified the NRC Resident Inspector.</br>* * * UPDATE FROM BEN HUNT TO JOE O'HARA AT 2046 ON 7/24/08 * * * </br>The TS required shutdown has been terminated on 7/24/08 at 1910 EDT, based on the receipt of an Emergency TS change. The plant exited LCO 3.8.1, Condition C and LCO 3.7.8, Condition A, and entered new LCO 3.7.8, Condition C. The revised TS will allow continued operation for an additional 7 days based, in part, on the implementation of an NRC approved Temporary Alternation. It is expected that the failed ERCW pump will be repaired within the new 10 day allowed outage time as specified in the Emergency TS change for LCO 3.7.8, Condition C (3 days were already used due to the inoperability of the B-A ERCW Pump occurred on 7/21, this leaves approximately 7 days left in the new action time.)</br>The licensee notified the NRC Resident Inspector.</br>Notified R2DO(Lesser).Resident Inspector.
Notified R2DO(Lesser). +
19:02:00, 24 July 2008 +
44,363 +
15:03:00, 24 July 2008 +
19:02:00, 24 July 2008 +
WBN Unit 1 experienced a failure of the B- … WBN Unit 1 experienced a failure of the B-A ERCW pump on July 21, 2008, at 2:46 p.m. EDT. The plant entered LCD 3.7.8, Condition A, for one ERCW train inoperable and LCD 3.8.1, Condition C, with two required DGs in Train A inoperable concurrently. Required Actions for LCO 3.7.8 and LCD 3.8.1 required restoration of the inoperable ERCW train and one DG to OPERABLE status in 72 hours, respectively. Plant shutdown was initiated in accordance with LCD 3.7.8, Condition B and LCD 3.8.1, Condition G when the above Required Actions were not met. The root cause of the pump failure is unknown at this time. An event team has been set-up to determine cause of pump failure. Currently, the unit is performing a control shutdown, and all systems are functioning as expected.</br>The licensee does not expect the ERCW pump to be returned to service and will downpower at 15% per hour. The licensee expects to be in Mode 3 by 2030 EDT. All required safety systems for safe shutdown are operable.</br>The licensee has notified the NRC Resident Inspector.</br>* * * UPDATE FROM BEN HUNT TO JOE O'HARA AT 2046 ON 7/24/08 * * * </br>The TS required shutdown has been terminated on 7/24/08 at 1910 EDT, based on the receipt of an Emergency TS change. The plant exited LCO 3.8.1, Condition C and LCO 3.7.8, Condition A, and entered new LCO 3.7.8, Condition C. The revised TS will allow continued operation for an additional 7 days based, in part, on the implementation of an NRC approved Temporary Alternation. It is expected that the failed ERCW pump will be repaired within the new 10 day allowed outage time as specified in the Emergency TS change for LCO 3.7.8, Condition C (3 days were already used due to the inoperability of the B-A ERCW Pump occurred on 7/21, this leaves approximately 7 days left in the new action time.)</br>The licensee notified the NRC Resident Inspector.</br>Notified R2DO(Lesser).Resident Inspector.
Notified R2DO(Lesser). +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
100 +
00:00:00, 24 July 2008 +
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>.
02:13:57, 2 March 2018 +
15:03:00, 24 July 2008 +
true +
false +
-0.166 d (-3.98 hours, -0.0237 weeks, -0.00545 months) +
19:02:00, 24 July 2008 +
Tech Spec Required Shutdown Due to Loss of Essential Raw Cooling Water Pump with 2 Edg'S Oos +
Safe Shutdown + and Power change +
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.