ENS Event | |
|---|---|
16:00 Oct 23, 2013 | |
| Title | Part 21 - Damaged Surveillance Capsules |
| Event Description | In April 2015, during Sequoyah Nuclear Plant Unit 1 end of cycle 20 refueling outage, the Tennessee Valley Authority (TVA) identified that there was unanticipated damage to the 'S' and 'W' surveillance capsules that were located within the reactor pressure vessel. Inspections determined that the surveillance capsules were not contained within the intact designated baskets. TVA conducted an extensive foreign object search and recovery initiative to recover the specimen capsule contents prior to concluding the refueling outage.
During the October 2013 Sequoyah Unit 1 refueling outage, the Westinghouse Electric Company (WEC) relocated the above referenced surveillance capsules in accordance with Westinghouse procedure MRS-SPP-2970. The procedure specified the requirements for performing specimen capsule relocations. WEC created a deviation when an inadequate procedure referenced in the applicable purchase order, which did not ensure proper seating of the sample capsule, was used at Sequoyah Nuclear Plant Unit 1. TVA considers the above condition to be reportable pursuant to 10 CFR 21.21 as a defect associated with a condition that, if uncorrected, could have created a substantial safety hazard." The NRC Resident Inspector and the vendor were notified. |
| Where | |
|---|---|
| Westinghouse Electric Company Soddy-Daisy, Tennessee (NRC Region 1) | |
| Organization: | Sequoyah |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+15671.8 h652.992 days <br />93.285 weeks <br />21.467 months <br />) | |
| Opened: | John Alexander 15:48 Aug 7, 2015 |
| NRC Officer: | Dong Park |
| Last Updated: | Aug 7, 2015 |
| 51298 - NRC Website | |
Westinghouse Electric Company with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 573042024-09-04T23:09:0004 September 2024 23:09:00
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