ML112340461

MPS2 Temporary Non-Code Compliant Condition of the Class 3 SW System 10 Inch EDG Supply Piping Flange RR RAI Response

ML112340461
Person / Time
Site:	Millstone
Issue date:	08/20/2011
From:	Bartron W Dominion Nuclear Connecticut
To:	Sanders C Plant Licensing Branch 1
Sandeers, Carleen, NRR/DORL, 415-1603
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ML112340463	List: ML112340461 ML112340464
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Download: ML112340461 (1)

Text

From: William Bartron [wbartron@cox.net]

Sent: Saturday, August 20, 2011 6:20 AM To: Sanders, Carleen Cc: William.D.Bartron@dom.com; Mohamed Elmaghrabi

Subject:

Millstone Power Station Unit 2 (MPS2) Temporary Non-Code Compliant Condition of the Class 3 SW System 10-Inch EDG Supply Piping Flange Relief Request RAI Responses Attachments: Response to MPS2 RR RAIs.doc Carleen J. Sanders, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Reactor Regulation By letter dated August 19, 2011, Dominion Nuclear Connecticut, Inc.

(DNC or the licensee) requested relief from certain Section XI requirements of the American Society of Mechanical Engineers (ASME)

Boiler and Pressure Vessel Code (ASME Code) for Millstone Power Station, Unit No. 2 (MPS2). Relief Request RR-04-12 is based on the hardship of performing required ASME Code repair/replacement activities to a degraded piping flange in the A train 10-inch service water (SW) supply line to the emergency diesel generator heat exchangers. To complete its review, on August 19, 2011, the U.S.

Nuclear Regulatory Commission (NRC) staff requested a response to a request for additional information. The DNC response to the request for additional information is attached.

If you have any questions please contact me at 860-444-4301.

Sincerely, William D. Bartron Station Licensing Supervisor Millstone Power Station Dominion Nuclear Connecticut, Inc.