ENS 50396
ENS Event | |
|---|---|
05:00 Aug 24, 2014 | |
| Title | Technical Specification Required Shutdown Due to Post Accident Monitoring Instrumentation Out of Service |
| Event Description | At 0039 [CDT] on 8/19/14, Point Beach Nuclear Plant, Unit 2 identified that 2TE-451A and 2TE-451C Cold Leg Temperature RTDs were out of service. Technical Specification 3.3.3, Post Accident Monitoring (PAM) Instrumentation, Action Condition C for one or more functions with two required channels inoperable was entered. Action Condition C requires one channel to be restored to OPERABLE status within 7 days. If completion time in Action Condition C cannot be met, Action Condition D will be entered, which requires entry into Action Condition E. Action Condition E would require Unit 2 to be in Mode 3 in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and Mode 4 in 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter.
Unit 2 is being shut down to effect repairs within the 7 day required action completion time for Action Condition C. This event is reportable under 10 CFR 50.72(b)(2)(i), Plant Shutdown Required by Technical Specifications. The Resident Inspector has been informed.
Point Beach is retracting EN# 50396 made on August 24, 2014 at 0323 EDT. Technical Specification 3.3.3. Post-Accident Monitoring (PAM) Instrumentation, Action Condition C for one or more functions with two required channels inoperable was entered. Action Condition C requires one channel to be restored to OPERABLE status within 7 days. The Unit 2 TE-451A and TE-451C Cold Leg Temperature RTDs inoperable condition was corrected and the plant returned to power before expiration of the 7 day period specified in Condition C of Technical Specification 3.3.3. Reference example (3) Failure that was or could have been corrected before shutdown was required, of Section 3.2.1, Plant Shutdown Required by Technical Specifications of NUREG-1022, Rev. 3, Event Report Guidelines 10 CFR 50.72 and 50.73. The licensee has notified the NRC Resident Inspector. Notified R3DO (McCraw). |
| Where | |
|---|---|
Point Beach  Wisconsin (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| Time - Person (Reporting Time:+-1.62 h-0.0675 days <br />-0.00964 weeks <br />-0.00222 months <br />) | |
| Opened: | Alex Rivas 03:23 Aug 24, 2014 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Oct 1, 2014 |
| 50396 - NRC Website | |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (99 %) |
WEEKMONTHYEARENS 503962014-08-24T05:00:00024 August 2014 05:00:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Post Accident Monitoring Instrumentation Out of Service ENS 464752010-12-13T18:10:00013 December 2010 18:10:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Not Meeting Rod Group Allignment Limits ENS 439072008-01-15T20:15:00015 January 2008 20:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unusual Event - Loss of Offsite Power ENS 436492007-09-18T13:43:00018 September 2007 13:43:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Refueling Water Storage Tank Temperature Above Operating Limits ENS 434242007-06-14T23:19:00014 June 2007 23:19:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Tech Spec. Required Shutdown Due to 72 Hour Completion Time Not Met ENS 421092005-11-02T05:00:0002 November 2005 05:00:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Tech Spec Required Shutdown Due to Degradation of Containment Coatings ENS 414472005-02-27T17:58:00027 February 2005 17:58:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Loss of Dc Battery Chargers ENS 412122004-11-19T22:22:00019 November 2004 22:22:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to a Steam Leak on an Instrument Isolation Valve Inside Containment ENS 406262004-03-30T18:15:00030 March 2004 18:15:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Safety Injection Accumulator Level Greater than Allowed by Technical Specification 2014-08-24T05:00:00 | |