ML061040062
| ML061040062 | |
| Person / Time | |
|---|---|
| Site: | North Anna  (NPF-004, NPF-007) |
| Issue date: | 04/13/2006 |
| From: | Grecheck E Virginia Electric & Power Co (VEPCO) |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 06-142A | |
| Download: ML061040062 (5) | |
Text
VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 A p r i l 13, 2006 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 Serial No.
06-142A NL&OS/ETS RO Docket Nos. 50-338/339 License Nos. NPF-4/7 VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION)
NORTH ANNA POWER STATION UNIT NOS. 1 AND 2 PROPOSED TECHNICAL SPECIFICATIONS CHANGES ON ADDITION OF ANALYTICAL METHODOLOGY TO THE CORE OPERATING LIMITS REPORT ADMINISTRATIVE CORRECTION By letter dated March 30, 2006 (Serial No.06-142), Dominion submitted a response to an NRC request for additional information concerning proposed Technical Specification changes associated with the addition of analytical methodology to the Core Operating Limits Report. Subsequent to this submittal, it was noted that, due to an administrative error, page 6 of 31 of the attachment to that letter was not included. The inadvertently omitted page is attached and should be incorporated into the attachment included in our March 30, 2006 submittal.
If you have any questions or require additional information, please contact Mr. Thomas Shaub at (804) 273-2763.
Very truly yours, E. S. Grecheck Vice President - Nuclear Support Services Attach me nt Commitments made in this letter: None
06-1 42A Docket Nos. 50-3381339 Page 2 of 3 cc:
U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW Suite 23T85 Atlanta, Georgia 30303 Mr. J. T. Reece NRC Senior Resident Inspector North Anna Power Station Mr. Stephen R. Monarque NRC Project Manager - Surry and North Anna U. S. Nuclear Regulatory Commission One White Flint North 1 1555 Rockville Pike Rockville, Maryland 20852 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
06-1 42A Docket Nos. 50-3381339 Page 3 of 3 COMMONWEALTH OF VIRGINIA
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)
COUNTY OF HENRICO 1
The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by Eugene S. Grecheck, who is Vice President -
Nuclear Support Services, of Virginia Electric and Power Company. He has affirmed before me that he is duly authorized to execute and file the foregoing document in behalf of that Company, and that the statements in the document are true to the best of his knowledge and belief.
n
,2006.
72/
Acknowledged before me this /J = day of My Commission Expires:
&A* fc g a Notary Public (SEAL)
Serial No. 06-142A Docket Nos. 50-338, 339 ATTACHMENT Page 6 of 31 of Attachment to Dominion Letter Dated March 30,2006 (Serial No.06-142)
Proposed Technical Specification Changes on Addition of Analytical Methodology to the Core Operating Limits Report Virginia Electric and Power Company (Dominion)
North Anna Power Station Units 1 and 2
Serial No.06-142 Docket Nos. 50-338/339 SE EA PMA PEA SCA SMTE SD SPE STE SPSE M1 MI MTE M2 M2MTE M3 M3MTE RD RTE The standard deviation used for the implementation of the Statistical DNBR Evaluation Methodology was 1.46%, which includes additional conservatism to allow for future changes in plant hardware or calibration procedures without invalidating the analysis. This standard deviation corresponds to a *.862% uncertainty, treated as a normal, two-sided, 95% probability distribution. This assumed uncertainty represents the minimum required accuracy for RCS flow and bounds the quantified uncertainty.
?Ao dp span 0.375 0.000 0.000 0.000 0.500 0.500 0.750 0.000 1.425 0.000 0.1 00 0.1 53 2.000 0.000 1.002 0.087 1.ooo 0.500 TABLE 1-1 Pressurizer Pressure Control Uncertainty RRA CSA Span CSA Pressurizer 0.000 3.552%
800 psi 28.4 psi 1 Variable Pressure U nce rtai nty Page 6 of 31