Browse wiki
Jump to navigation
Jump to search
100 +
On 01/30/08, it was discovered that restri … On 01/30/08, it was discovered that restrictor plates were not installed as required in the Unit 1 and Unit 2 interior doghouse floor drains. The restrictor plates are indicated as required on applicable flow diagrams. The purpose of the plates is to limit the amount of flow into the interior doghouse floor drains following a Main Feedwater (MFW) line break event in the doghouse. Without the restrictor plates installed, the amount of flow into the floor drains following a MFW line break could overwhelm the capability of the floor drain pump. Water could then flood into the AFW pump rooms and could render all three AFW pumps on the affected unit inoperable. Operations declared the 3 AFW pumps on both Units inoperable at 1220 today. TS 3.7.5.D states that with 3 AFW trains inoperable, LCO 3.0.3 and all other LCO required actions requiring Mode changes are suspended until on AFW train is restored to operable status. Both Units will remain at 100% power until repairs are complete. This condition does not prevent the AFW pumps from starting on an automatic or manual signal for any required plant events.</br>An investigation into how this condition occurred is underway. As a result of this discovery, all three AFW pumps on each unit have been declared inoperable.</br>Plant personnel are currently in the process of fabricating the required restrictor plates or blind flanges as necessary and installing them to conform to the drawing requirements. The restrictor plates/blind flanges are being installed and upon completion the affected AFW pumps will be considered operable.</br>The licensee notified the NRC Resident Inspector. State and local government agencies will also be notified by the licensee.ies will also be notified by the licensee. +
17:20:00, 30 January 2008 +
43,945 +
17:52:00, 30 January 2008 +
17:20:00, 30 January 2008 +
On 01/30/08, it was discovered that restri … On 01/30/08, it was discovered that restrictor plates were not installed as required in the Unit 1 and Unit 2 interior doghouse floor drains. The restrictor plates are indicated as required on applicable flow diagrams. The purpose of the plates is to limit the amount of flow into the interior doghouse floor drains following a Main Feedwater (MFW) line break event in the doghouse. Without the restrictor plates installed, the amount of flow into the floor drains following a MFW line break could overwhelm the capability of the floor drain pump. Water could then flood into the AFW pump rooms and could render all three AFW pumps on the affected unit inoperable. Operations declared the 3 AFW pumps on both Units inoperable at 1220 today. TS 3.7.5.D states that with 3 AFW trains inoperable, LCO 3.0.3 and all other LCO required actions requiring Mode changes are suspended until on AFW train is restored to operable status. Both Units will remain at 100% power until repairs are complete. This condition does not prevent the AFW pumps from starting on an automatic or manual signal for any required plant events.</br>An investigation into how this condition occurred is underway. As a result of this discovery, all three AFW pumps on each unit have been declared inoperable.</br>Plant personnel are currently in the process of fabricating the required restrictor plates or blind flanges as necessary and installing them to conform to the drawing requirements. The restrictor plates/blind flanges are being installed and upon completion the affected AFW pumps will be considered operable.</br>The licensee notified the NRC Resident Inspector. State and local government agencies will also be notified by the licensee.ies will also be notified by the licensee. +
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, 30 January 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>.
02:15:09, 2 March 2018 +
17:52:00, 30 January 2008 +
true +
false +
0.0221 d (0.53 hours, 0.00315 weeks, 7.25994e-4 months) +
17:20:00, 30 January 2008 +
TS-3.0.3 + and TS-3.7.5.D +
Auxiliary Feedwater Pumps Declared Inoperable Based on Postulated Main Feedwater Line Break Scenario +
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.