ENS 52297
ENS Event | |
|---|---|
12:57 Oct 15, 2016 | |
| Title | Reactor Vessel Head Penetration Nozzle Flaw |
| Event Description | On October 15, 2016, while the Harris Nuclear Plant was shut down for a scheduled refueling outage, the reactor vessel head penetrations were being examined in accordance with the lnservice Inspection Program. Ultrasonic examinations identified a flaw in a head penetration nozzle. The unit is in a safe and stable condition. The flaw will be repaired prior to startup from the refueling outage.
The flaw and repair have no impact on the health and safety of the public or station employees. The NRC Resident Inspector has been notified. The flaw is located on the J groove weld of Nozzle 40. No boric acid deposits were located near the nozzle.
Subsequent inspections identified an additional nozzle that will require repairs (Nozzle 51) prior to startup. Inspections continue and are expected to be completed by October 18. The additional inspection indication and repair have no impact on the health and safety of the public or station employees. The NRC Resident Inspector has been notified. The flaw is located on the J groove weld. No boric acid deposits were located near the nozzle. Notified R2DO(Ehrhardt).
Subsequent inspections identified an additional nozzle that will require repairs (Nozzle 30) prior to startup. Inspections continue and are expected to be completed by October 18. The additional inspection indication and repair have no impact on the health and safety of the public or station employees. The NRC Resident Inspector has been notified. Notified R2DO(Ehrhardt). |
| Where | |
|---|---|
Harris  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |
| Time - Person (Reporting Time:+2.82 h0.118 days <br />0.0168 weeks <br />0.00386 months <br />) | |
| Opened: | Tasha Stephens 15:46 Oct 15, 2016 |
| NRC Officer: | Steven Vitto |
| Last Updated: | Oct 16, 2016 |
| 52297 - NRC Website
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WEEKMONTHYEARENS 533262018-04-11T18:30:00011 April 2018 18:30:00
[Table view]10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition Due to Indication During Ultrasonic Examination of Reactor Nozzle Penetration ENS 522972016-10-15T12:57:00015 October 2016 12:57:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Reactor Vessel Head Penetration Nozzle Flaw ENS 509622015-04-07T15:47:0007 April 2015 15:47:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Reactor Vessel Head Penetration Flaw Identified During Inservice Inspection ENS 495532013-11-18T13:00:00018 November 2013 13:00:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Ultrasonic Examination Identified Flaw in Reactor Vessel Head Penetration ENS 490382013-05-15T10:49:00015 May 2013 10:49:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded, 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Technical Specification Required Shutdown Due to Discovery of an Unacceptable Flaw During Data Review ENS 491312012-04-27T18:33:00027 April 2012 18:33:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Reactor Head Nozzle Penetration Flaws Identified 2018-04-11T18:30:00 | |