ENS Event | |
|---|---|
15:47 Apr 7, 2015 | |
| Title | Reactor Vessel Head Penetration Flaw Identified During Inservice Inspection |
| Event Description | This is a non-emergency report.
On April 7, 2015, while the Harris Nuclear Plant was shut down for a scheduled refueling outage, the reactor vessel head penetrations were being examined in accordance with Inservice 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 to the health or safety of the public. The NRC Resident Inspector has been informed. An extent of condition investigation is on-going.
During the ongoing reactor vessel head penetration examinations, two additional flaws were identified in head penetration nozzles. The unit remains in a safe and stable condition. All of the identified flaws will be repaired prior to startup from the refueling outage. The remaining examinations are in progress to determine the extent of condition. The NRC Resident Inspector has been notified. Notified R2DO (Heisserer) |
| Where | |
|---|---|
Harris  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |
| Time - Person (Reporting Time:+0.85 h0.0354 days <br />0.00506 weeks <br />0.00116 months <br />) | |
| Opened: | Crystian Ioppolo 16:38 Apr 7, 2015 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Apr 9, 2015 |
| 50962 - 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 | |