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On 4/26/14 at 2322 EDT it was determined t … On 4/26/14 at 2322 EDT it was determined that the combined leakage for Main Steam Isolation Valves (including MSIV's, Main Steam Line Drains, HPCI Steam Supply and RCIC Steam Supply) per SR (Surveillance Requirement) 3.6.1.3.12 exceeded the minimum pathway limit of 300 scfh (standard cubic feet per hour). The MSIV Combined leakrate of 309 scfh exceeded the limit of 300 scfh with the Local Leak Rate Test failure of the HPCI Steam Supply Outboard Isolation Valve.</br>This event is being reported as a degraded condition pursuant to 10CFR50.72(b)(3)(ii), as it was discovered that the required leakage limits were exceeded.</br>The licensee informed the NRC Resident Inspector.</br>* * * UPDATE AT 1415 EDT ON 05/14/14 FROM JAY BARNES TO S. SANDIN * * * </br>The licensee is retracting this event based on the following:</br>Subsequent engineering review identified an administrative error with procedures used to calculate MSIV leakage. Recalculation using revised procedures resulted in a MSIV Combined leakrate of 129 scfh, which is below the associated minimum pathway limit of 300 scfh specified in SR 3.6.1.3.12.</br>Therefore, this condition is not reportable and EN 50061 is being retracted.</br>The licensee informed the NRC Resident Inspector. Notified R1DO (Jackson).ident Inspector. Notified R1DO (Jackson). +
03:22:00, 27 April 2014 +
01:45:00, 27 April 2014 +
03:22:00, 27 April 2014 +
On 4/26/14 at 2322 EDT it was determined t … On 4/26/14 at 2322 EDT it was determined that the combined leakage for Main Steam Isolation Valves (including MSIV's, Main Steam Line Drains, HPCI Steam Supply and RCIC Steam Supply) per SR (Surveillance Requirement) 3.6.1.3.12 exceeded the minimum pathway limit of 300 scfh (standard cubic feet per hour). The MSIV Combined leakrate of 309 scfh exceeded the limit of 300 scfh with the Local Leak Rate Test failure of the HPCI Steam Supply Outboard Isolation Valve.</br>This event is being reported as a degraded condition pursuant to 10CFR50.72(b)(3)(ii), as it was discovered that the required leakage limits were exceeded.</br>The licensee informed the NRC Resident Inspector.</br>* * * UPDATE AT 1415 EDT ON 05/14/14 FROM JAY BARNES TO S. SANDIN * * * </br>The licensee is retracting this event based on the following:</br>Subsequent engineering review identified an administrative error with procedures used to calculate MSIV leakage. Recalculation using revised procedures resulted in a MSIV Combined leakrate of 129 scfh, which is below the associated minimum pathway limit of 300 scfh specified in SR 3.6.1.3.12.</br>Therefore, this condition is not reportable and EN 50061 is being retracted.</br>The licensee informed the NRC Resident Inspector. Notified R1DO (Jackson).ident Inspector. Notified R1DO (Jackson). +
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00:00:00, 14 May 2014 +
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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03:22:00, 27 April 2014 +
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