NL-08-0345, Unit 1, Commitment for Examination of 12 Recirculation Inlet Nozzle Dissimilar Metal Welds
| ML080670427 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 03/07/2008 |
| From: | David Jones Southern Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NL-08-0345 | |
| Download: ML080670427 (4) | |
Text
David H. Jones Southern Nuclear Vice President Operating Company, Inc.
Engineering 40 Inverness Center Parkway Birmingham, Alabama 35242 Tel 205.992.5984 Fax 205.992.0341 SOUTHERNA COMPANY March 7, 2008 Energy to Serve lOurWorM'"
Docket No.:
50-321 NL-08-0345 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Edwin I. Hatch Nuclear Plant - Unit 1 Commitment for Examination of 12" Recirculation Inlet Nozzle Dissimilar Metal Welds Ladies and Gentlemen:
By letter NL-08-0316 dated February 29,2008 Southern Nuclear Operating Company (SNC) provided information to NRC regarding the status of Hatch reactor vessel dissimilar metal welds. In that letter, SNC grouped the welds by mitigation status and inspection techniques used, One grouping included five 12" recirculation inlet nozzle dissimilar metal welds that are mitigated by hydrogen water chemistry (HWC) and Induction Heat Stress Improvement (IHSI), which have not yet been examined in accordance with Section XI, Appendix VIII, Supplement 10. In the February 29, 2008 letter, SNC indicated that these five welds would be examined in accordance with Section XI, Appendix VIII, Supplement 10 dUring the 2010 refueling outage.
On March 3, 2008, SNC and NRC personnel further discussed this topic. In that telecon, NRC requested that SNC characterize the inspection plans for those five welds as a Regulatory Commitment.
Accordingly, Enclosure 1 provides the requested commitment.
This letter contains NRC Commitments. If you have any questions, please contact Ray Baker at 205-992-7367.
D. H. Jones Vice President - Engineering DHJ/PAH/daj
U. S. Nuclear Regulatory Commission NL-08-0345 Page 2
Enclosure:
- 1. List of Regulatory Commitments cc:
Southern Nuclear Operating Company Mr. J. T. Gasser, Executive Vice President Mr. D. R. Madison, Vice President - Hatch RTYPE: CHA02.004 U. S. Nuclear Regulatory Commission Mr. V. M. McCree, Acting Regional Administrator Mr. R. E. Martin, NRR Project Manager - Hatch Mr. J. A. Hickey, Senior Resident Inspector - Hatch
Edwin I. Hatch Nuclear Plant-Unit 1 Commitment for Examination of 12" Recirculation Inlet Nozzle Dissimilar Metal Welds List of Regulatory Commitments List of Regulatory Commitments The following table identifies those actions committed by Southern Nuclear Operating Company in this document for Edwin I. Hatch Nuclear Plant. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
Regulatory Commitments Weld Number Nozzle Number Due Date/Event 1B31-1 RC-12BR-D-5 N2D End of 1RF024 1B31-1RC-12AR-F-5 N2F End of 1RF024 1B31-1 RC-12AR-G-5 N2G End of 1RF024 1B31-1 RC-12AR-H-5 N2H End of 1RF024 1B31-1RC-12AR-K-5 N2K End of 1RF024 For the above referenced welds, SNC will perform Section XI, Appendix VIII, Supplement 10 examinations of dissimilar metals welds no later than the completion of refueling outage 1R24 which is scheduled to start in spring of 2010.
E1 -1