ML062640070
| ML062640070 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 09/07/2006 |
| From: | Gordon Peterson Duke Energy Corp, Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML062640070 (3) | |
Text
SDuke GARY R.PETERSON Vice President EnergyGuire Nuclear Station Duke Energy Corporation MGOIVP / 12700 Hagers Ferry Rd.
Huntersville, NC 28078 704 875 5333 704 875 4809 fax grpeters@duke-energy. corn September 7, 2006 United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555-0001
Subject:
Duke Power Company LLC d/b/a Duke Energy Carolinas, LLC (Duke)
McGuire Nuclear Station Units 1 and 2 Docket Nos. 50-369 and 50-370 Update on Corrective Actions to Resolve the Auxiliary Feedwater System Air Entrainment Condition Reference 1: Duke letter To NRC dated April 25, 2006 The purpose of this letter is to provide another update on Duke's plans for resolving an Operable But Degraded Non conforming (OBDN) condition which currently exists on the Auxiliary Feedwater (CA) system at McGuire Nuclear Station (McGuire).
As stated in our April 25, 2006 letter, McGuire would provide a committed schedule for implementing the corrective actions to resolve the CA system air entrainment OBDN condition on both units upon completion of vendor testing and design validation. The testing conducted demonstrated that the modifications under design would not resolve the subject OBDN conditions. As a result, McGuire was forced to abandon the design work in progress and start design work on alternative system modifications.
Unit 2 piping modification work will begin during the Unit 2 refueling outage scheduled to start on September 16, 2006 and continue after the Unit 2 outage until the start of the Unit 1 refueling outage. Although the Unit 1 design details are still under development, piping modification work is anticipated to begin no later than the Unit 1 refueling outage scheduled to start on March 17, 2007.
www. duke-energy. corn
U.S. Nuclear Regulatory Commission September 7, 2006 Page 2 Once all the design work is complete, McGuire will provide a committed schedule for implementing the corrective actions to resolve the CA system air entrainment OBDN condition on both units.
Please contact Lee Hentz at 704-875-4187 or Jim Mead at 704 875-4129 if any questions arise.
Sincerely, Gary R. Peterson xc:
W. D. Travers Regional Administrator, Region II U. S. Nuclear Regulatory Commission Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, GA 30303 J. F. Stang, Jr. (addressee only)
Project Manager U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Mail Stop 8-H4A Washington, DýC. 20555 J. B. Brady Senior Resident Inspector U. S. Nuclear Regulatory Commission McGuire Nuclear Station
U.S. Nuclear Regulatory Commission September 7, 2006 Page 3 bcc:
K. L. Crane (MG01RC)
J. J. Nolin (MG05SE)
J. W. Boyle (MG01MO)
S. W. Brown (MG01VP)
J. W. Bramblett (MG01WC)
R. B. Parker (MGO0WC)
J. A. Kammer (MG01VP)
C. J. Thomas (MG01RC)
R. L. Gill, Jr. (EC05P)
T. P. Harrall (MGO1VP)
ELL (EC050)