ENS Event | |
|---|---|
05:00 Feb 22, 2021 | |
| Title | Part 21 - Outer Containment Personnel Airlock Leakage |
| Event Description | The following information was provided by the licensee via email:
On February 22, 2021 while in Mode 1 and at 100 percent power, Grand Gulf Nuclear Station (GGNS) identified through surveillance testing that the 208 foot elevation outer containment personnel airlock door failed its technical specification leakage test. Analysis indicated that the airlock equalizing valves were leaking due to lack of lubrication during installation. Subsequent analysis determined that the lubrication was to have been performed during a vendor's qualification / dedication process. GGNS completed a substantial safety hazard Evaluation and determined that the failure to lubricate the valve components constituted a substantial safety hazard. The NRC Resident [Inspector] has been notified. This is a non-emergency notification required by 10 CFR 21.21(d)(3)(i). A written notification will be provided within 30 days. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: This condition has been corrected. This report is submitted to meet 10 CFR Part 21 reporting requirements. |
| Where | |
|---|---|
Grand Gulf Nuclear Station  Port Gibson, Mississippi (NRC Region 4) | |
| Organization: | Grand Gulf Nuclear Station |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+14795.48 h616.478 days <br />88.068 weeks <br />20.267 months <br />) | |
| Opened: | Jeff Hardy 15:29 Oct 31, 2022 |
| NRC Officer: | Ernest West |
| Last Updated: | Oct 31, 2022 |
| 56192 - NRC Website
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WEEKMONTHYEARENS 561922021-02-22T05:00:00022 February 2021 05:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - Outer Containment Personnel Airlock Leakage 2021-02-22T05:00:00 | |