ENS 48758
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ENS Event | |
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18:00 Feb 15, 2013 | |
Title | Technical Specification Required Shutdown Due to Component Cooling Water Train Out of Service |
Event Description | At 2030 hours0.0235 days <br />0.564 hours <br />0.00336 weeks <br />7.72415e-4 months <br /> [EST] on February 14, 2013, technical specification (TS) 3.7.7 condition A was entered due to the right train of the component cooling water (CCW) system being declared inoperable. The cause of the inoperable train was the identification of an approximate 40 gallon per hour CCW system to service water system leak inside the 'A' CCW heat exchanger. TS 3.7.7 condition A requires restoration of the inoperable train within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. If the restoration is not completed within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, the plant must be in Mode 3 within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in Mode 5 within the subsequent 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.
Due to the inability to repair the leak within the required 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> time frame during power operation, a plant shutdown was initiated at approximately 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> on February 15, 2013. Entry into Mode 3 is expected at approximately 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> on February 15, 2013. The plant will enter Mode 5 to execute leak repair. Mode 5 entry is expected at approximately 0800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br /> on February 16, 2013. This event has no impact on the health and safety of the public. The NRC Resident Inspector has been notified. |
Where | |
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Palisades Michigan (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
Time - Person (Reporting Time:+-2.92 h-0.122 days <br />-0.0174 weeks <br />-0.004 months <br />) | |
Opened: | Terry Davis 15:05 Feb 15, 2013 |
NRC Officer: | Howie Crouch |
Last Updated: | Feb 15, 2013 |
48758 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (55 %) |
WEEKMONTHYEARENS 490022013-05-05T05:12:0005 May 2013 05:12:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Shutdown - Safety Injection Refueling Water Tank Declared Inoperable Due to Leak ENS 487582013-02-15T18:00:00015 February 2013 18:00:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Component Cooling Water Train Out of Service ENS 484782012-11-04T16:30:0004 November 2012 16:30:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Secondary Side Steam Leak ENS 480182012-06-12T18:56:00012 June 2012 18:56:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown ENS 443852008-08-06T00:29:0006 August 2008 00:29:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Tech Spec Required Shutdown Due to Excessive Unidentified Leakage ENS 429542006-11-01T23:05:0001 November 2006 23:05:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unit Shutdown Required Due to Service Water Leak Involving a Containment Air Cooler ENS 424622006-03-29T17:15:00029 March 2006 17:15:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Hpsi Inoperability 2013-05-05T05:12:00 | |
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