ENS Event | |
|---|---|
05:00 Oct 19, 2014 | |
| Title | Part 21 - Defect In Loca Analysis For B&W Plants |
| Event Description | The following information was summarized from the report obtained from the vendor via facsimile:
The defect is related to the thermal conductivity model in the codes TACO3 and GDTACO which are used in the AREVA LOCA model for B&W plants. The thermal conductivity model does not adequately represent the change in conductivity with burnup for the fuel. The correction of the thermal conductivity model results in the peak cladding temperature limit in 10 CFR 50.46 (2200 degrees F) being exceeded. The defect exists for the following plants: Oconee Nuclear Station Unit 1, Oconee Nuclear Station Unit 2, Oconee Nuclear Station Unit 3, Arkansas Nuclear One Unit 1, Three Mile Island Unit 1, and Davis-Besse Unit 1 If there are any technical questions or concerns, please contact: Gayle Elliott AREVA, lnc., 3315 Old Forest Road Lynchburg, VA 24501 Ph. # 434-841-0306. |
| Where | |
|---|---|
| Areva, Inc. Lynchburg, Virginia (NRC Region 1) | |
| Organization: | Areva, Inc. |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+892.17 h37.174 days <br />5.311 weeks <br />1.222 months <br />) | |
| Opened: | Gayle Elliott 10:10 Nov 25, 2014 |
| NRC Officer: | John Shoemaker |
| Last Updated: | Nov 25, 2014 |
| 50636 - NRC Website | |
Areva, Inc. with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 506362014-10-19T05:00:00019 October 2014 05:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - Defect in Loca Analysis for B&W Plants 2014-10-19T05:00:00 | |