ML050670176
| ML050670176 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 03/07/2005 |
| From: | Hartz L Virginia Electric & Power Co (VEPCO) |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 05-086 | |
| Download: ML050670176 (2) | |
Text
VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 March 7, 2005 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 Serial No.05-086 NLOS/ETS Docket Nos. 50-338/339 License Nos. NPF-4/7 VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION)
NORTH ANNA POWER STATION UNITS 1 AND 2 IMPLEMENTATION OF FUEL ASSEMBLY BOW FINAL RESOLUTION FRAMATOME ANP ADVANCED MARK-BW FUEL In a letter dated January 22, 2004 (Serial No.04-017), Dominion documented the interim resolution of an issue associated with assumed fuel assembly bow that is applicable to the methodology supporting use of Framatome ANP Advanced Mark-BW fuel for North Anna Units 1 and 2. In particular, the issue involved the methodology for assessing power peaking effects of assumed fuel assembly bow. The approach of letter 04-017 was accepted in the NRC Staffs Safety Evaluation Reports (SERs) issued for use of Advanced Mark-BW fuel in North Anna Units 1 and 2. These SERs were issued by letters dated April 1, 2004 (Unit 2) and August 20, 2004 (Unit 1).
In a letter dated November 23, 2004, Framatome ANP provided NRC a final report concerning the reassessment of the fuel assembly bow analysis. Framatome ANPs assessment concluded that the methodology of assessing fuel assembly bow effects as documented in the previously approved topical report continues to be applicable and acceptable. (The relevant topical report is BAW-I0147(P)(A), Revision 1, Fuel Rod Bowing in B&W Fuel Designs, dated May 1983.) The Framatome ANP final report for the assembly bow issue further concludes that the additional penalties which were applied by licensees on a temporary basis to support continued operation while evaluation of the matter proceeded are not required. Therefore, such interim penalties can be removed.
As indicated in our January 22, 2004 submittal, Dominion intends to implement Framatome ANPs final resolution of the assembly bow assessment. Implementation of Framatome ANPs final resolution is consistent with the direction indicated in the NRC Staff SERs that were issued for use of Advanced Mark-BW fuel at North Anna.
Implementing Framatome ANPs final assembly bow resolution involves removal of the compensatory measures, such that the treatment of assembly bow effects is consistent with the methodology of BAW-l0147(P)(A), Revision 1.
Although Framatome ANPs final resolution of this issue justifies immediate removal of the interim approach and its associated compensatory measures, continued application of the compensatory measures is conservative. It is anticipated that full removal of the compensatory measures will be accomplished no later than startup of the upcoming
operating cycles for each unit. The relevant timeframes are fall 2005 (Unit 2) and spring 2006 (Unit 1).
If you have any questions or require additional information, please contact Mr. Thomas Shaub at (804) 273-2763.
Very truly yours, Leslie N. Hartz Vice President - Nuclear Engineering Commitments made in this letter: None cc:
U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW Suite 23T85 Atlanta, Georgia 30303 Mr. J. E. Reasor, Jr.
Old Dominion Electric Cooperative lnnsbrook Corporate Center 4201 Dominion Blvd.
Suite 300 Glen Allen, Virginia 23060 Commissioner Bureau of Radiological Health 1500 East Main Street Suite 240 Richmond, VA 23218 Mr. S. R. Monarque Licensing Project Manager Division of Licensing Project Management U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. M. S. King NRC Senior Resident Inspector North Anna Power Station