ENS Event | |
|---|---|
04:00 Apr 22, 2024 | |
| Title | Part 21 - Fuel Assembly Spacer Relocation |
| Event Description | The following is a summary of information provided by the licensee via email:
Global Nuclear Fuel discovered instances of GNF3 fuel assembly spacers relocating within the fuel bundle. A safety communication was issued in 2022 following the discovery of a raised water rod (WR) at Grand Gulf Nuclear Station. Shutdown inspections in February 2024 at Lasalle identified five spacers out of position. Shutdown inspections at Limerick in April 2024 identified four spacers out of position. Those discoveries prompted this Part 21 report. An evaluation concluded that the relocated spacers could result in a degraded critical power margin, but the evaluation of this condition indicates it will not compromise or greatly reduce protection to public health and safety. Plants with suspect bundles installed: Grand Gulf Nuclear Station (Raised WR but no defective spacers) Lasalle (1 bundle with 5 relocated spacers found) Limerick (1 bundle with 4 relocated spacers found) Nine Mile Point (No defects found) Fermi (No defects found) Peach Bottom (Shutdown scheduled in Fall 2024) Fitzpatrick (Shutdown scheduled in Fall 2024)
Updated to correct administrative errors in the summary of defects. Corrections were made above. Notified R1DO (Werkheiser), R3DO (Betancourt-Roldan), R4DO (Warnick), Part 21/Reactor Group (email) |
| Where | |
|---|---|
| Ge-Hitachi Nuclear Energy Americas, Llc Wilmington, North Carolina (NRC Region 2) | |
| License number: | SNM-1097 |
| Organization: | Global Nuclear Fuel |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+10.55 h0.44 days <br />0.0628 weeks <br />0.0145 months <br />) | |
| Opened: | Ralph Hayes 14:33 Apr 22, 2024 |
| NRC Officer: | Adam Koziol |
| Last Updated: | Apr 29, 2024 |
| 57088 - NRC Website | |
Ge-Hitachi Nuclear Energy Americas, Llc with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 570882024-04-22T04:00:00022 April 2024 04:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - Fuel Assembly Spacer Relocation 2024-04-22T04:00:00 | |