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On October 3, 2013, at 2045 (CDT) hours, a … On October 3, 2013, at 2045 (CDT) hours, a defect (pinhole through-wall leak) was identified on the drain line for the LS 2-2365, HPCI TURBINE INLET DRAIN POT LEVEL SWITCH. The defect was identified during investigation of leakage near LS 2-2365. The LS 2-2365, HPCI TURBINE INLET DRAIN POT LEVEL SWITCH, is provided to detect a failure of the HPCI steam trap during standby line-up. The location of the defect, is in Class 2 Safety related piping. HPCI is a single train safety system and this notification is being made in accordance with 10CFR50.72(b)(3)(v)(D). The instrument isolations for LS 2-2365 have been close and the leak has been isolated.</br>There is no increase to plant risk and RCIC (Reactor Core Isolation Cooling) is available.</br>The licensee will inform the NRC Resident Inspector.</br>* * * RETRACTION ON 11/7/13 AT 1412 EST FROM JEFFERY JACOBSON TO DONG PARK * * *</br>The purpose of this notification is to retract the ENS report made on October 4, 2013, at 0212 EDT (ENS Report # 49407).</br>Upon further investigation the pinhole through-wall leak discovered in the Unit 2 HPCI room was in a weld at a 'Tee' downstream of the Unit 2 HPCI turbine inlet drain pot level switch (LS 2-2365) on drain line 2-2386B-1-B. The defect was characterized as a 1/16-inch rounded hole due to gas porosity (with no evidence of cracking).</br>A subsequent evaluation performed by Quad Cities Station considering the defect size, location, and characterization confirmed the Unit 2 High Pressure Coolant Injection (HPCI) system would have performed its safety function when required. Based on this subsequent evaluation, ENS Report # 49407 is being retracted.</br>Note: On October 3, 2013, at 1155 CDT the Unit 2 HPCI drain line leak was isolated and HPCI was declared operable.</br>The licensee has notified the NRC Resident Inspector.</br>Notified R3DO (Lipa). Resident Inspector.
Notified R3DO (Lipa). +
01:45:00, 4 October 2013 +
49,407 +
02:12:00, 4 October 2013 +
01:45:00, 4 October 2013 +
On October 3, 2013, at 2045 (CDT) hours, a … On October 3, 2013, at 2045 (CDT) hours, a defect (pinhole through-wall leak) was identified on the drain line for the LS 2-2365, HPCI TURBINE INLET DRAIN POT LEVEL SWITCH. The defect was identified during investigation of leakage near LS 2-2365. The LS 2-2365, HPCI TURBINE INLET DRAIN POT LEVEL SWITCH, is provided to detect a failure of the HPCI steam trap during standby line-up. The location of the defect, is in Class 2 Safety related piping. HPCI is a single train safety system and this notification is being made in accordance with 10CFR50.72(b)(3)(v)(D). The instrument isolations for LS 2-2365 have been close and the leak has been isolated.</br>There is no increase to plant risk and RCIC (Reactor Core Isolation Cooling) is available.</br>The licensee will inform the NRC Resident Inspector.</br>* * * RETRACTION ON 11/7/13 AT 1412 EST FROM JEFFERY JACOBSON TO DONG PARK * * *</br>The purpose of this notification is to retract the ENS report made on October 4, 2013, at 0212 EDT (ENS Report # 49407).</br>Upon further investigation the pinhole through-wall leak discovered in the Unit 2 HPCI room was in a weld at a 'Tee' downstream of the Unit 2 HPCI turbine inlet drain pot level switch (LS 2-2365) on drain line 2-2386B-1-B. The defect was characterized as a 1/16-inch rounded hole due to gas porosity (with no evidence of cracking).</br>A subsequent evaluation performed by Quad Cities Station considering the defect size, location, and characterization confirmed the Unit 2 High Pressure Coolant Injection (HPCI) system would have performed its safety function when required. Based on this subsequent evaluation, ENS Report # 49407 is being retracted.</br>Note: On October 3, 2013, at 1155 CDT the Unit 2 HPCI drain line leak was isolated and HPCI was declared operable.</br>The licensee has notified the NRC Resident Inspector.</br>Notified R3DO (Lipa). Resident Inspector.
Notified R3DO (Lipa). +
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100 +
00:00:00, 7 November 2013 +
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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02:12:00, 4 October 2013 +
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0.0188 d (0.45 hours, 0.00268 weeks, 6.1641e-4 months) +
01:45:00, 4 October 2013 +
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