ENS 49677
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ENS Event | |
|---|---|
18:01 Dec 26, 2013 | |
| Title | Technical Specification Required Shutdown Due to Blown Fuse |
| Event Description | On December 26, 2013 at 1301 EST, Nine Mile Point Unit 1 (NMP1) commenced a reactor shutdown in accordance with Technical Specification (TS) 3.2.7.c as a result of Main Steam Isolation Valve (MSIV) 111 being declared inoperable due to a surveillance test failure when power was lost to the control circuit. The cause of the power loss was a blown fuse due to a short in the test circuitry. TS 3.2.7.c requires that a normal orderly shutdown be initiated within one hour and have the reactor in cold shutdown condition within ten hours. The blown fuse was replaced, test circuit isolated, power to the control circuit restored and MSIV 111 was declared operable at 1549 EST. Power ascension is in progress.
Post maintenance operability test have been completed and the surveillance will be completed at a later time. The licensee has notified the NRC Resident Inspector and the State of New York. |
| Where | |
|---|---|
Nine Mile Point  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| Time - Person (Reporting Time:+-1.53 h-0.0638 days <br />-0.00911 weeks <br />-0.0021 months <br />) | |
| Opened: | Jim Vaughn 16:29 Dec 26, 2013 |
| NRC Officer: | Dong Park |
| Last Updated: | Dec 26, 2013 |
| 49677 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (65 %) |
WEEKMONTHYEARENS 496772013-12-26T18:01:00026 December 2013 18:01:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Blown Fuse ENS 485902012-12-13T21:30:00013 December 2012 21:30:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Primary Containment System Declared Inoperable ENS 475142011-12-09T15:46:0009 December 2011 15:46:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unidentified Rcs Leakage Greater than 2 Gpm Increase within 24 Hours ENS 471292011-08-06T07:22:0006 August 2011 07:22:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unusual Event and Plant Shutdown Due to Drywell Unidentified Leakage Greater than 10 Gpm ENS 461442010-08-03T18:52:0003 August 2010 18:52:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unit 1 Entered a Tech Spec Required Shutdown After Declaring Edg 102 Inoperable ENS 446352008-11-07T01:27:0007 November 2008 01:27:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Tech Spec Required Shutdown Required Due to Failed Surveillance Test ENS 432232007-03-08T19:50:0008 March 2007 19:50:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Shutdown Due to a Degraded Seal in the "a" Reactor Recirculation Pump ENS 426302006-06-11T05:26:00011 June 2006 05:26:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Shutdown Due to High Rcs Drywell Leakage ENS 409192004-08-03T23:30:0003 August 2004 23:30:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Plant Shutdown Initiated Due to Inoperable Emergency Ups Inverter ENS 407192004-05-02T06:17:0002 May 2004 06:17:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Manual Scram Due to Rising Torus Temperature Due to Stuck Open Erv ENS 405882004-03-15T15:30:00015 March 2004 15:30:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Shutdown Required by Technical Specifications Due to Inoperable Isolation Instrumentation ENS 404362004-01-10T18:00:00010 January 2004 18:00:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Ts Required Shutdown at Nmp1 Due to Inoperable Msiv ENS 402322003-10-08T14:30:0008 October 2003 14:30:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Primary Coolant Boundary Leakage 2013-12-26T18:01:00 | |
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