ML043210560
| ML043210560 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 11/16/2004 |
| From: | Hartz L Virginia Electric & Power Co (VEPCO) |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 04-331A, BL-04-001 | |
| Download: ML043210560 (3) | |
Text
VIRGINIA ELECTRIC AND POWER COMPANY
- RICHMOND, VIRGINIA 23261 November 16, 2004 10 CFR 50.54(f)
U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Serial No.:
04-331 A NL&OS/ETS Rev 0 Docket No.:
50-338 License No.:
NPF-4 VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION)
NORTH ANNA POWER STATION UNIT 1 RESULTS OF INSPECTION OF ALLOY 82/182/600 MATERIALS USED IN PRESSURIZER PENETRATIONS AND STEAM SPACE PIPING CONNECTIONS PERFORMED FOR NRC BULLETIN 2004-01 In a letter dated May 28, 2004 the NRC issued NRC Bulletin 2004-01, Inspection of Alloy 82/182/600 Materials Used in the Fabrication of Pressurizer Penetrations and Steam Space Piping Connections at Pressurized-Water Reactors (PWRs). The bulletin requested inspection of the Alloy 82/182/600 materials used in the pressurizer penetrations and steam space piping connections. It also requested a 60-day report regarding the inspections performed, including the as-found condition of the pressurizer shell and associated penetrations During the Fall 2004 refueling outage for North Anna Unit 1, Dominion performed 100%
bare metal visual examination of the five welds connecting the pressurizer spray valve, the safety valves, and the power operated relief valve nozzles to the downstream piping.
In addition, best-effort ultrasonic examinations were performed to the extent possible given certain geometric limitations. The aggregate coverage was about 40-60%. However, coverage from scans that would have detected axial flaws in the weld was essentially 100%. No flaws were identified.
Note that these examinations were not the Code required examinations. The Code examinations are not scheduled until later in the third Interval.
No indications of leakage or cracking were found.
Should you have any questions regarding Dominions response to the bulletin, please contact Mr. Thomas Shaub at (804) 273-2763.
Very truly yours, Y
Leslie N. Hartz Vice President - Nuclear Engineering Commitments made in this letter; None
Serial No. 04-331A Docket No. 50-338 Response to BL 2004-01 Page 2 of 3 cc:
U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW Suite 23 T85 Atlanta, Georgia 30303-8931 Mr. M. T. Widmann NRC Senior Resident Inspector North Anna Power Station Mr. S. R. Monarque NRC Project Manager U. S. Nuclear Regulatory Commission One White Flint North 11 555 Rockville Pike Mail Stop 8-HI2 Rockville, Maryland 20852 Mr. J. E. Reasor, Jr.
Old Dominion Electric Cooperative lnnsbrook Corporate Center, Suite 300 4201 Dominion Blvd.
Glen Allen, Virginia 23060
Serial No. 04-331A Docket No. 50-338 Response to BL 2004-01 Page 3 of 3 North Anna Power Station Unit 1 Results of Inspection of Alloy 82/182/600 Materials Used In Pressurizer Penetrations And Steam Space Piping Connections Performed For NRC Bulletin 2004-01 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 Leslie N. Hartz, who is Vice President - Nuclear Engineering of Virginia Electric & Power Company. She has affirmed before me that she is duly authorized to execute and file the foregoing document in behalf of those companies, and that the statements in the document are true to the best of her knowledge and belief.
Acknowledged before me this / k % a y of /&?&
/I.+& 2004.
My Commission Expires:
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U Notary Public (SEAL)