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During investigations of flood barrier pen … During investigations of flood barrier penetrations, a flood barrier sealing a diesel driven fire pump exhaust was found to be cracked. This exhaust pipe penetrates the west wall of the intake structure. Flooding through the penetration could have impacted the ability of the station's raw water pumps to perform their design accident mitigation functions. </br>This eight-hour notification is being made pursuant to 10 CFR 50.72 (b)(3)(v).</br>The penetration is at an approximate elevation of 1012 feet mean sea level (MSL). The river level has been less than 997 feet MSL since prior to December 1, 2010. The raw pumps are operable. There are not any indications of conditions that might result in a flood. Actions are in progress to plug the penetration.</br>The NRC Resident Inspector has been notified.</br>* * * UPDATE FROM ERICK MATZKE TO JOE O'HARA AT 1641 ON 4/20/11 * * *</br>This event is being retracted.</br>Additional review and evaluation determined that the seal flaw is above the station design flood level of 1014 feet mean sea level, and is therefore, not reportable.</br>The NRC Resident Inspector has been notified.</br>Notified R4DO (Hay).or has been notified.
Notified R4DO (Hay). +
14:15:00, 12 April 2011 +
46,747 +
14:34:00, 12 April 2011 +
14:15:00, 12 April 2011 +
During investigations of flood barrier pen … During investigations of flood barrier penetrations, a flood barrier sealing a diesel driven fire pump exhaust was found to be cracked. This exhaust pipe penetrates the west wall of the intake structure. Flooding through the penetration could have impacted the ability of the station's raw water pumps to perform their design accident mitigation functions. </br>This eight-hour notification is being made pursuant to 10 CFR 50.72 (b)(3)(v).</br>The penetration is at an approximate elevation of 1012 feet mean sea level (MSL). The river level has been less than 997 feet MSL since prior to December 1, 2010. The raw pumps are operable. There are not any indications of conditions that might result in a flood. Actions are in progress to plug the penetration.</br>The NRC Resident Inspector has been notified.</br>* * * UPDATE FROM ERICK MATZKE TO JOE O'HARA AT 1641 ON 4/20/11 * * *</br>This event is being retracted.</br>Additional review and evaluation determined that the seal flaw is above the station design flood level of 1014 feet mean sea level, and is therefore, not reportable.</br>The NRC Resident Inspector has been notified.</br>Notified R4DO (Hay).or has been notified.
Notified R4DO (Hay). +
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