ML053130260

Response to 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

ML053130260
Person / Time
Site:	McGuire
Issue date:	11/01/2005
From:	Gordon Peterson Duke Power Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BL-04-001
Download: ML053130260 (4)

Text

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• lPowere A Duke Energy Company GARY R. PETERSON Vice President McGuire Nuclear Station Duke Power MGOI VP / 12700 Hagers Ferry Road Huntersville, NC 28078-9340 704 875 5333 704 875 4809 fax grpeters@duke-energy.com November 1, 2005 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C. 20555-0001

Reference:

Duke Energy Corporation McGuire Nuclear Station, Unit I Docket No. 50-369 Response to 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 Letter from Duke Energy Corporation to the NRC dated July 27, 2004 as supplemented by letter dated September 21, 2004 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," required that within 60 days of plant restart following the next inspection of Alloy 82/182/600 pressurizer penetrations and steam space piping connections, licensees submit to the NRC a statement indicating that the inspections described in the response to item (1) (c) of the bulletin were completed and a description of the as-found condition of the pressurizer shell, any findings of relevant indications found by NDE, a summary of the disposition of any findings of boric acid, and any corrective actions taken and/or repairs made as a result of the indications found.

During the McGuire Unit I Refueling Outage (IEOCC17), inspections described in the response to item (1) (c) of the bulletin were completed. A 100% bare metal visual (BMV) examination (3600) was performed on all Alloy 82/182/600 weld locations on the pressurizer. These BMV inspections were performed by VT-2 qualified inspectors.

A lro www. duke-energy. corn

U. S. NRC November 1, 2005 Page 2 The inspection scope included the following locations:

(1)

Pressuirzer surge line nozzle weld (3)

Pressurizer safety valve nozzle welds (1)

Pressurizer spray nozzle weld (1)

Pressurizer PORV nozzle weld (1)

Pressurizer manway There was no evidence of leakage or boric acid deposits observed at any of these locations. There was no wastage identified on the external surface of the pressurizer vessel head.

Questions regarding this submittal should be directed to Kay Crane, McGuire Regulatory Compliance at (704) 875-4306.

Gary R. Peterson

U. S. NRC November 1, 2005 Page 3 Gary R. Peterson, being duly sworn, affirms that he is the person who subscribed his name to the foregoing statement, and that all matters and facts set forth herein are true and correct to the best of his knowledge.

Gary R. Peterson, McGuire Site Vice President Subscribed and sworn to me:

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U.S. NRC November 1, 2005 Page 4 Mr. W. D. Travers U. S. Nuclear Regulatory Commission Regional Administrator, Region II Atlanta Federal Center 61 Forsyth St., SW Suite 23T85 Atlanta, GA 30303 Mr. R. E. Martin NRC Project Manager U. S. Nuclear Regulatory Commission Mail Stop 0-8 H12 Washington, D.C. 20555-0001 Mr. Joe Brady NRC Senior Resident Inspector McGuire Nuclear Station