ENS 50636: Difference between revisions
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| event date = 10/19/2014 EST | | event date = 10/19/2014 EST | ||
| last update date = 11/25/2014 | | last update date = 11/25/2014 | ||
| title = Part 21 - Defect | | title = Part 21 - Defect in Loca Analysis for B&W Plants | ||
| event text = The following information was summarized from the report obtained from the vendor via facsimile: | | event text = 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 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. | ||
Latest revision as of 20:49, 1 March 2018
| 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 | |