NL-07-2113, Operability Evaluation of Areva Cutler-Hammer Breakers
| ML073100823 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 11/05/2007 |
| From: | Jerrica Johnson Southern Nuclear Operating Co |
| To: | NRC/RGN-II |
| References | |
| NL-07-2113 | |
| Download: ML073100823 (2) | |
Text
J. R. Johnson Southern Nuclear Vice President* Farley Operating Company. Inc.
Post Office Drawer 470 Ashford, Alabama 35312*Q470 Tei 3348144511 Fa.> 334.814.4728 SOUTHERN A COMPANY November 5, 2007 Ene/x)' to Ser/!t hl/lr Win,ld'"
Docket Nos.: 50-348 NL-07-2113 50-364 U. S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931 Joseph M. Farley Nuclear Plant - Units 1 and 2 Operability Evaluation of AREVA Cutler-Hammer Breakers Ladies and Gentlemen:
On October 25, 2007, Southern Nuclear Operating Company (SNC) participated in a call with NRC Region II to discuss current evaluations of AREVA Cutler Hammer 4160 volt breakers at Farley Nuclear Plant (FNP). SNC identified the current issues with the AREVA Cutler-Hammer breakers and presented the inspection plans and corrective actions to address these issues. SNC submitted a letter to NRC Region" on October 29,2007, providing more detailed information on the Cutler-Hammer breaker issues and inspection plans. This letter supplements the October 29 submittal.
For Unit 1, the inspections are proceeding in accordance with the plan detailed in of the October 29 letter. In addition, documentation verification has been completed for Unit 1 breakers, as required for entry into Mode 5. Unit 1 has been refueled and is currently in Mode 5.
With respect to Unit 2, on November 2,2007, in the course of its documentation review, SNC determined that inspection of two of the Unit 2 breakers: DK-04 and DF-13, did not include the Anti-pump Relay Socket Connection inspection, in accordance with the approved inspection plan. Inspection of the Anti-pump Relay Socket Connection was performed and documented for these two breakers on November 3, 2007. Inspections of all Unit 2 breakers within the scope of the October 29, 2007, letter have now been completed satisfactorily, in accordance with the approved inspection plan. In addition, documentation verification has been completed for these Unit 2 breaker inspections.
U. S. Nuclear Regulatory Commission NL-07-2113 Page 2 The action plan identified in the October 29,2007, letter is continuing and provides reasonable assurance that each breaker will perform its intended design function. In addition, SNC safety-related breaker inspection checklist and procedures have been updated to ensure that quality aspects described in the SNC October 29,2007, letter are verified on each new AREVA Cutler-Hammer breaker.
Finally, the AREVA Cutler Hammer breaker monitoring program will include additional breaker checks during equipment maintenance to ensure proper breaker operation. SNC will continue to monitor the AREVA Cutler-Hammer breakers and any additional problems identified, will be addressed in accordance with the SNC Corrective Action Program. This would include appropriate causal analysis and extent of condition.
This letter contains no new NRC commitments. If you have any questions, please advise.
Vice President - Farley JRJ/CHMldaj cc: Southern Nuclear Operating Company Mr. J. T. Gasser, Executive Vice President Mr. D. H. Jones, Vice President - Engineering RTYPE: CFA04.054; LC # 14671 U. S. Nuclear Regulatory Commission Dr. W. D. Travers, Regional Administrator Ms. K. A. Cotton, NRR Project Manager - Farley Mr. E. L. Crowe, Senior Resident Inspector - Farley Document Control Desk